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| Subject | Date Asked |
| Hot water thump | 1/19/2012 |
| Q: When I turn on the hot water in a sink or shower, water comes out as expected but slower than usual ... A: I do not know by the information given the last time the system was opened, but it appears there is ... | |
| Hvac or thermostat | 12/19/2011 |
| Q: I have a fuse box outside next to my AC unit. I see a on and off tag. How would I know if the fuse ... A: For the exterior box, there will be a breaker in the main panel feeding this disconnect. Turn off ... | |
| heating problem | 12/17/2011 |
| Q: The air handler makes a vibrating noise when the compressor is running, and when the heating cycle ... A: You may have a loose duct joint making the vibrating and ductwork will expand in heat mode and pop ... | |
| Refrigerator not cooling | 12/15/2011 |
| Q: I left the freezer door open a crack on my GE profile Side by side. ( 10 yrs. old ) The door was ... A: It is very likely the coils froze up with the door slightly opened. Since you hear the compressor ... | |
| Repairing old mistakes | 11/30/2011 |
| Q: Most everything, HVAC wise, in my home is working fine. But, I would like to correct some things ... A: First on the returns. If you have a common return duct in the living area with a filter, individual ... | |
| noisy heating system | 11/7/2011 |
| Q: i had a new heating furnace/boiler put in 2 years ago, since than off and on it has been noisy when ... A: It sounds like there is air in the system. It will make unusual and often loud noises with air in ... | |
| adding freon to fridge/freezer with obvious leak | 10/25/2011 |
| Q: In Ontario, is it legal for a technician to pierce the 2 ft. copper suction tube in order to add ... A: I am not sure of Canada laws, but in the States, it is illegal to add refrigerant to any leaking ... | |
| Concord 80 Plus Gas Furnace won't start | 10/24/2011 |
| Q: I have a Concord 80 Plus gas furnace that will not turn on automatically when the temperature drops ... A: You do not say the age of the furnace, but either the inducer motor is not producing enough draft ... | |
| improve inhome air quality | 10/7/2011 |
| Q: We have moved from a home with boiler heat to a home with forced air gas and would like to improve ... A: I am in total agreement in using an electronic air filtration system. My Aunt had a heat pump that ... | |
| Forced-air blower wiring | 10/6/2011 |
| Q: I have an ancient oil-burning forced-air furnace with a 110V single-speed blower. The furnace ... A: The wires should go directly to the motor from a heat sensitive or timer control in the control box ... | |
| carrier furnace | 9/21/2011 |
| Q: i have a carrier furnace the igniter is not glowing but the gas valve seems to be opening because ... A: You have a potentially deadly situation if the gas valve is opening without the ignitor glowing. It ... | |
| a/c wiring | 9/11/2011 |
| Q: my question is there is 5 wires on the out side of my unit these are small wires.the problem is ... A: This is the thermostat wire. A lesson learned. Turn the outside disconnect feeding the unit off. To ... | |
| switch help | 8/28/2011 |
| Q: I am in the USA and I am a Computer Repair Tech. and know a little bit about Home Electrical. I ... A: No. A single switch with just two terminals is a single pole, single throw switch. None have ... | |
| Split system condensing unit | 8/15/2011 |
| Q: On a two story building with a split system condensing unit, what causes it to leak water from the ... A: The primary drain line may be too small. The only time water would run from the auxillary drain is ... | |
| Loud bang from furnace | 7/30/2011 |
| Q: There's a loud bang from my furnace about 3 seconds after my central air turns OFF. Never noticed ... A: It could be one of several things, but the two most likely are that the a/c requires a higher fan ... | |
| Hot water heater & AC | 7/28/2011 |
| Q: We put in a new hotwater heater (gas). This vents into the chimney.Nothing is different, used the ... A: You say it happens when the cental air kicks on, does it do this in cooling mode, or just in heat ... | |
| Res Central AC Problem | 7/6/2011 |
| Q: I have an 11yo Lennox 2ton AC/furnace. Its been solid but has also been limping along on a hard ... A: Check the name plate to see how many amps the compressor and outdoor fan are supposed to be pulling ... | |
| heat pump | 6/21/2011 |
| Q: I have been working on a Bryant unit. I have replaced the compressor and now a reversing valve, my ... A: If you are using R22, it appears by the pressures the charge is low, but with it tripping we need to ... | |
| water leaking from unit inside home | 6/19/2011 |
| Q: recently I have been having problems with my Trane unit. First it is old and needs to be replaced ... A: Actually excess water is a good thing. It indicates at least the system is working properly and ... | |
| Furnace & AC general question | 6/16/2011 |
| Q: I have been looking online and cannot find my answer. I know: * Bryant 340MAV furnace - unknown ... A: Every structure requires a very in depth load calculation in order to determine the size of ... | |
| Replace TXV on evaporator | 6/2/2011 |
| Q: Had TXV replaced on the evaporator and was charged a flat $500. No itemized bill. It took less than ... A: It depends on how large the system is. A system requiring a TXV instead of some other metering ... | |
| heat pump | 5/26/2011 |
| Q: We purchased a foreclosed property with a Tappan air handler. The name on the condenser is faded. ... A: In theory it may or may not work, but according to mechanical code, the system MUST have matching ... | |
| necessity of relay on old Miller packaged A/C | 5/8/2011 |
| Q: This self-contained unit is in a mobile home park, and the blower is not running when the condenser ... A: It sounds good in theory, but with the two G wires connected it will overide the furnace fan relay. ... | |
| HVAC | 5/5/2011 |
| Q: I thinking about getting a lennox g61mp and xc13 air conditioner and air filtration system hcc-16 ... A: Keep in mind this is my personal experience and opinion, but I personally have experienced more ... | |
| A-COIL REPLACEMENT | 4/20/2011 |
| Q: I need to replace my A-coil. Someone told me that the SEER ratings have to be the same, is this ... A: This is true, the ratings need to match. As the seer ratings rise, most often the piping sizes also ... | |
| Intermittent wall vibration | 4/18/2011 |
| Q: Good morning, I recently had a new Goodman A/C unit installed. It will run through 3 or 4 cycles ... A: The thermostat and its wiring operate on 24 volts, so there is not enough power in the cable to ... | |
| Switching from heat to a/c on a daily basis | 4/7/2011 |
| Q: I live in the Southeast and during this time of the year, the weather can't make it's mind up to be ... A: I am near Charlotte so I know EXACTLY what weather you are experiencing. It was 81 last Friday and ... | |
| Radiant Floor Heating system has leaks and need to replace | 3/29/2011 |
| Q: I have a 46 year old home on a concrete slab that has a radiant floor heating system. It's a long 1 ... A: I agree, $40K is rediculous. You do not state what area of the country you are, but I assume seeking ... | |
| Trane AC/Heater Blower will not stop running | 3/28/2011 |
| Q: I have a Trane AC/Heater unit and my problem is the blower will not stop running. I have check to ... A: You did not indicate if the heating is a heat pump or some sort of fuel heat. If fuel heat, the fan ... | |
| HEIL GAS AND ELECTRIC COMBO UNIT | 3/27/2011 |
| Q: MODEL # PGAA24C1K1G4PO24A3B1. OUR UNIT IS ONE OF THE OLDER UNITS. OUR UNIT STARTED KICKING THE ... A: A short could be in any component in the unit. The only way to locate it would be to use an ohm ... | |
| Icing on Suction | 3/14/2011 |
| Q: When the system (split Ac or package AC) is low on refrigerant then why does icing occurs on the ... A: I admit I am not an engineer and can not explain this in total detail by the physics of the ... | |
| Icing on Suction | 3/12/2011 |
| Q: When the system (split Ac or package AC) is low on refrigerant then why does icing occurs on the ... A: When the refrigerant charge is low, it will operate the evaporator coil at a point lower than the ... | |
| AC mode does not work on home unit | 3/10/2011 |
| Q: AC goes on but it does not cool. Goes on in heat mode - air handler works. Suspect that the ... A: Yes it is soldered in, but it is the most reliable component, not that it can not fail, but they are ... | |
| Furnace or central vent smell | 3/1/2011 |
| Q: The other rooms/vents are ok. (initially, I thought the prob was the vent pipe under the bathrm ... A: First I would check the entire duct run to both of these areas. It is common for a rodent to chew ... | |
| heat and air split systems | 2/25/2011 |
| Q: want to order a split system for my home. when ordering, do all systems come hrat and air ready. ... A: It depends on the brand. Some units come precharged and ready to install, others require it to be ... | |
| cfurnace fanarrier | 2/15/2011 |
| Q: Mr.Cook, I have an old carrier furnace (58sx)that is causing me problems with the fan. First of all ... A: Kevin I have a some questions. 1. Does the fan do this at all times as long as the power is on, or ... | |
| Furnace/AC Unit Dripping Water | 2/1/2011 |
| Q: A friend up the street called me to look at a problem with their Trane combination gas furnace/AC ... A: I don't know without any model numbers, but it is very possible there is a standing pilot in the ... | |
| lennox G32 | 1/18/2011 |
| Q: innovator series dimension model G32Q3-75-2 installed 7/99 on 1/7 (Fri) replaced pleated filter ... A: It is a fact that some filters are so non porous that enough air will not get through. It will cause ... | |
| Compatibility of 2010 R410A Condenser & 2002 R22 Air Handler | 1/17/2011 |
| Q: In June 2010, my compressor failed on my original 2002 Carrier 10 SEER R-22 split system heat pump. ... A: To put it bluntly, you have a mess! A 2010 condenser would have to be at minimum a 13 seer unit that ... | |
| blown in insulation | 1/16/2011 |
| Q: .the house here is over 30 years of age, and the previous homeowners did not go out of their way to ... A: In any case, you will get some benefit of adding to the walls, the problem is there are horizontal ... | |
| furnace exhaust | 1/6/2011 |
| Q: Our newly installed propane furnace sits on the first floor and exhausts down a few inches then ... A: It can not run down for any length, especially since it runs horizontally for this distance, it just ... | |
| problem w/Aquatherm model | 12/21/2010 |
| Q: I am having a problem with my Aquatherm system model no. 24VAQ3, 77 gallons, in an approx. 600 sq/ft ... A: With a system that is working as far as every component is operating, it is very difficult to ... | |
| furnace problem | 11/23/2010 |
| Q: i have weatherking ge5d30 is about 5 years when iturn on the heat the ignitor will light and the ... A: This could be a multitude of problems. I am concerned there does not seem by description to be a ... | |
| Refrigerant Charging below 55 degrees | 11/22/2010 |
| Q: What is the best method of charging an AC when the out door temp is below 55 degrees A: The condenser fan as you see can play havoc trying to charge the unit. I use a jumper wire connected ... | |
| Honeywell intermittent pilot won't spark/light | 11/21/2010 |
| Q: Honeywell intermittent pilot won't spark/light when I turn on the thermostat. It used to make a ... A: The first item to energize is the inducer fan located in the vent pipe at the top of the fan ... | |
| Vent temp | 11/18/2010 |
| Q: The vent in one room in our home blows heat that is a noticeable temp difference than anyother ... A: There is a main trunk line or duct from the fan section. Each individual vent is connected to this ... | |
| furnace | 11/17/2010 |
| Q: i have a carrier weathermaker dx series furnance i went to turn on the switch got the inducer motor ... A: At the inducer motor on the vent there is a flow switch. It in an in and out switch so to jump it ... | |
| Carrier Crusader Gas Furnace #58ssc110-jc | 11/16/2010 |
| Q: I replaced blower motor furnace worked fine other than the motor burned up.Now afterwards the ... A: David there are so many safety controls and limits on a furnace it could be locking the unit out in ... | |
| Payne PA10JA060 | 8/30/2010 |
| Q: My AC model PA10JA060-C 5 ton unit went out. The two twenty amp breakers trip when the thermostat ... A: $160 sounds still high for a capacitor. I would remove it being sure to mark all wiring connections ... | |
| thru wall HVAC Unit for an addition | 8/29/2010 |
| Q: Mr. Cook : I am designing a 20'x20' open space addition that will be exposed to the N,E & S sides of ... A: I have all the details given but am not sure of the question? If you are needing to know the size of ... | |
| Low Mass and singl Circulartor | 8/28/2010 |
| Q: I am in the process of getting estimates to replace my 1978 New Yorker oil boiler that has a coil in ... A: Both of these are legitimate concerns. If the home is unoccupied for any length of time, I agree ... | |
| Low Mass and singl Circulartor | 8/27/2010 |
| Q: I am in the process of getting estimates to replace my 1978 New Yorker oil boiler that has a coil in ... A: all of your concerns are excellent and I commend you for doing your homework ahead of time. The most ... | |
| Split AC Ventilation | 8/26/2010 |
| Q: does split ac fan mode supply outside air? A: It depends on how old the system is. New installation requirements have a percentage of outside air ... | |
| Carrier AC model 38ck024310 | 8/16/2010 |
| Q: i have a Carrier model 38ck024310 and 2 days ago it had stopped, So far i have replaced filter on ... A: It sounds like catastrophic compressor failure, but it could also be a capacitor. First, use a ... | |
| Goodman Condensor | 8/15/2010 |
| Q: my Goodman GSC130361DE condenser cools well but wont start and blows circuit breaker when it is ... A: I would first suspect it may be slightly overcharged and when it tries to restart the compressor is ... | |
| Central Air Not Cooling home | 8/13/2010 |
| Q: I have two units on my roof. One on each side of the home. Problem: The coolest air that will come ... A: I would inspect all of the ductwork for a start. I may be there is a joint separated somewhere, ... | |
| Flame out and Small Boom | 8/12/2010 |
| Q: Cook! I have a New Yorker FR 147K BTU oil fired boiler with a Beckett burner with a Sundstrand ... A: it is really a difficult question. Personally even with the electric situation, I think all in all ... | |
| Air Conditioner | 8/3/2010 |
| Q: My air conditioner blows cold air, but the temperature does not drop and it feels humid in the ... A: A properly sized a/c unit will run continuously at around 92 or above. It may just be so hot and ... | |
| adding kick heater | 8/1/2010 |
| Q: I am looking to add a kick heater under my kitchen sink into my existing hot water baseboard system ... A: This new unit will need an air bleed or indeed it will just fill with air. There are manual bleeds ... | |
| Trane Residential HVAC | 7/30/2010 |
| Q: In 6/2006 we had the HVAC replaced in our home and an additional unit added upstairs. The upstairs ... A: I am glad the problem is being solved, and under warranty. I am not so sure I would not only call ... | |
| Trane Residential HVAC | 7/29/2010 |
| Q: In 6/2006 we had the HVAC replaced in our home and an additional unit added upstairs. The upstairs ... A: I would question the warranty as I agree with you that it should still be under warranty. In order ... | |
| a/c wont turn off | 7/20/2010 |
| Q: my outside a/c unit has just started to not wanting to shut off when the temp. in side hits it ... A: This is totally correct. A unit that is designed correctly can operate continuously when the ... | |
| Flame out and Small Boom | 7/19/2010 |
| Q: Cook! I have a New Yorker FR 147K BTU oil fired boiler with a Beckett burner with a Sundstrand ... A: At this point I would not replace the pump. It is not so much the pump is loosing suction as it has ... | |
| Carrier 58pav | 7/18/2010 |
| Q: At home when I thought to myself boy it's hot in here. 83deg. so I went downstairs and noticed the ... A: It appears that either the motor is failing, or it may be the capacitor. You always replace the ... | |
| Flame out and Small Boom | 7/17/2010 |
| Q: Cook! I have a New Yorker FR 147K BTU oil fired boiler with a Beckett burner with a Sundstrand ... A: Since it goes out and reignites, there will be fumes and some oil build up, this creates the " Boom ... | |
| High Voltage wiring for central air | 7/15/2010 |
| Q: I want to install a wall mounted (split system, 1 ton) air conditioning unit at my cottage and want ... A: That is correct. It is typical on a 240 volt device not to have a neutral. #14 is rated for 15 amps ... | |
| outside compressor | 7/8/2010 |
| Q: I just replaced the capacitor and the contactor on my HVAC outside compressor. Now I am overly ... A: No, they are on two totally separate circuits and conrolled separately. The thermostat can keep the ... | |
| 60 BTU's Enough? | 6/16/2010 |
| Q: I have a 1200 sf (2 story) townhome in Minnesota and am replacing the furnace and air. I've decided ... A: In order to determine the equipment required for any facility, be it a 500 sq ft room or the Empire ... | |
| Airconditioning for vaulted ceiling | 6/10/2010 |
| Q: Would it be wise to use a roof mounted ventilation fan with a ceiling vent grill while running my ... A: I may be a little confused, but it is stated with a ceiling vent grille. This would be exhausting ... | |
| climatemaster tranquility 20 trouble/compressor | 6/9/2010 |
| Q: i have a climatemaster tr20 geothermal and have had isses with the compressor kicking off and the ... A: The most common failure is the water valve that throttles the water through the circuit. If the ... | |
| Not getting cold air, compressor? | 6/4/2010 |
| Q: Last week I noticed that my 2nd floor unit (Carrier 58sta070-12) wasn't putting out cold air. I ... A: First, be sure the outdoor fan is running at full speed. A failed capacitor may have damaged the fan ... | |
| Goodman Heat Pump problem | 5/23/2010 |
| Q: I have a Goodman heat pump and the outside part of the unit seems to have quit doing anything. I ... A: This box is a pump that sends the condensate water to the exterior. The outdoor unit has a separate ... | |
| Air conditioner does not turn off | 5/22/2010 |
| Q: I live in a two level house. The a/c unit in the upper level takes a very long time to cool; while ... A: I also live in a two story home with separate units. You did not say if the upper unit is finally ... | |
| a/c | 5/21/2010 |
| Q: My central a/c in my condo was showing condensation on 2 out of 7 grilles and around the register as ... A: Normal mastic has a very light odor. I am wondering if this contractor used some silicon which has a ... | |
| Baseboard Heaters | 5/20/2010 |
| Q: I am renovating a 2nd floor (interior) condo I have in NJ. It is a vacation home. I pulled out the ... A: I would not be comfortable dropping the wattage almost in half. Since the stats can be set this low, ... | |
| hvac | 5/19/2010 |
| Q: trying to install a contactor on the outside coil,and the thermostat was still on , when we flipped ... A: It most likely damaged the transformer. Even though it is reading 24 volts out, with a load it ... | |
| gas furnace won't work (?) | 5/11/2010 |
| Q: I have a Lennox Elite 90 gas(propane) furnace that was installed new in 2000. In 2003or4 my ex ... A: The wood furnace is fairly simple since the wood is the fuel, there are fewer controls. It would ... | |
| help on outside unit | 5/10/2010 |
| Q: i just purchased a mobile home with a outside unit. The unit has freon and i need to remove the unit ... A: It is against EPA law to allow refrigerant to escape and the fine for just one release is $25,000. ... | |
| AirQuest Furnace NTC6075FBA1 | 5/8/2010 |
| Q: I had this furnace installed about 12 years earlier and had no problems until 2 years ago and know i ... A: There is a device called a thermocouple that senses the pilot flame. I am not sure the type of unit ... | |
| compressor cutting off on high pressure | 5/7/2010 |
| Q: My compressor keeps cutting off on high pressure even though the system is not fully charged.All ... A: You need to go to an HVAC supply and get a good coil cleaner. Follow the directions and clean the ... | |
| ac will not shut off\turn the switch off and it blows hot air | 5/6/2010 |
| Q: We just had a whole new system installed in my house. It cools great but it doesnt shut off at the ... A: Since it is a new system and the electronic components are so reliable, I do not think it is a ... | |
| cleaning vents | 3/29/2010 |
| Q: I have these vents outside my house next to the roof top. I noticed that birds and bees like to nest ... A: Cleaning the ducts is a very costly project. If you can verify any infestation in the ducts and do ... | |
| Nice weather ~ no heat | 3/26/2010 |
| Q: Nordyne/Intertherm oil furnace will stop operation after a period of warm weather. After being idle ... A: This is a very difficult one to diagnose as there seems to be no definitive problem other than not ... | |
| new A/C connections at furnace | 3/25/2010 |
| Q: I'm installing a new central air system. I ran the 2 wires to the condenser from the furnace and ... A: The yellow wire from the thermostat AND one of the two wires to the condenser connect to the Y ... | |
| i can not get my heatpump to work | 3/17/2010 |
| Q: I can not get my heatpump to work although I have 24 volts running to my defrost board, but getting ... A: There are a number of safetys in the control circuit depending on the manufacturer. These safetys ... | |
| contractor changes hvac for new home | 3/15/2010 |
| Q: Our contractor originally bid an Amana 14 seer 5 ton unit; however, he replaced it with a Payne ... A: In my personal opinion, the Amana is one of the lowest end units available. I would prefer a Payne ... | |
| hvac condenser | 3/13/2010 |
| Q: fan motor locked up. replaced it and replaced contactor. checked most everything with meter. when ... A: If you can push in the contactor and it starts I would question it getting 24 volts. Use your meter ... | |
| york heat pump 2 ton | 2/16/2010 |
| Q: it ran for two days after i was there then it started blowing the 5 amp fuse in the air handler ... A: This fuse is in the control circuit wiring. You may have to trace all of the control wiring to see ... | |
| Bryant 90i,Will not start from time to time | 2/13/2010 |
| Q: I have Bryant 90i Model 352MAV,unit size 036080,This what is it doing, The inductor will come on ... A: It sounds to me like the control module. By resetting the controls, it clears any faults and the ... | |
| Oil Pumping Wearing Out or? | 2/2/2010 |
| Q: Cook, I have a New Yorker FR 147K BTU oil fired boiler with a Beckett burner. The furnace as ... A: With any age on the unit replacing the pump will not hurt anything and the check valve can be ... | |
| Oil Pumping Wearing Out or? | 2/1/2010 |
| Q: Cook, I have a New Yorker FR 147K BTU oil fired boiler with a Beckett burner. The furnace as ... A: Mike that is very possible. To eliminate this, I would install a check valve in both lines to ... | |
| hvac | 1/31/2010 |
| Q: I have a fully contained hvac unit that sits outside the crawl space of my south Ga. home It is old ... A: I recently replaced both of my units with Goodman brand. If they are still offering it, they have a ... | |
| electric furnace | 1/29/2010 |
| Q: I have an electric furnace in my attic that seems to not heat up. The fan works, power supply ... A: I would more suspect the board or more likely a limit sensor. Look closely however at all the wiring ... | |
| outdoor unit wont work | 1/28/2010 |
| Q: The Outdoor portion of my Central Heat & Air won't turn on.There are no noises or any indication ... A: If you have the leads on the same circuit via two different wires, when energized, it will read 0. ... | |
| HVAC upgrade | 1/14/2010 |
| Q: Just had a new Carrier gas furnace and split A/C system installed. From the equipment sheets I can ... A: A two stage residential cooling is very unusual, are you certain it has two cooling stages? You can ... | |
| possible furnace thermostat problem | 1/13/2010 |
| Q: We have a gas fired carrier furnace/central air system at our home and a honeywell programmable ... A: It is remotely possible it could be the thermostat, but the fan in heat mode is energized by a ... | |
| Transformer and relay (fan control head) r8285D in my Burnham boiler died | 12/22/2009 |
| Q: Transformer and relay (fan control head) r8285D in my Burnham boiler died. What must have caused ... A: It appears to me you have more of a parts replacer than a technician. All of these I can not believe ... | |
| Heat Pump Humming | 12/21/2009 |
| Q: I have an outdoor heat pump. This cold season it began humming before it comes on and off. ... A: Unfortunately it is as the technician indicated, there are so many components that could be making a ... | |
| Bryant furnace lockout | 12/18/2009 |
| Q: I am looking for help with a 7 yr old Bryant furnace, Mdl 310AAV066135. About 2 wks ago during a ... A: It is common for only two tubes to open until the furnace initially fires so the sensor does not ... | |
| Heating question Carrier model #fa4cnf048 | 12/17/2009 |
| Q: My blower keeps running continuously on my Carrier model #fa4cnf048 even when the thermostat is set ... A: There is either a module or contactor that energizes the fan that has stuck relay points. You look ... | |
| Gas Furnace starting and stoping | 12/8/2009 |
| Q: My furnace is starting and stopping. I'm pretty sure it's something to do with the thermostat. We ... A: It could be several things. A manual thermostat has a heat anticipator that must be set according to ... | |
| Mister 50 Humidifier on Carrier Furnace | 12/7/2009 |
| Q: I have a carrier gas furnace that has a Mister 50 humidifier that was installed several years ago. ... A: Since you can hear the solenoid click, it appear all of the wiring is fine. Either there is debris ... | |
| Furnace Troubles. | 12/4/2009 |
| Q: We have a Hot surface ignition furnace. Everything works fine but after about 15 minutes into the ... A: There are mulitple high temperature safetys on a fuel furnace. Either one is failing or it may be ... | |
| heater | 12/3/2009 |
| Q: heater will not come on with thermostat.will come on with on position but not on auto.what can i do A: In auto mode during the heat cycle, the fan is kept off until the heat exchanger reaches a preset ... | |
| janitrol main limit open | 12/2/2009 |
| Q: My Janitrol gas furnace will not ignite. The blower continuously runs and the LED light is blinking ... A: This is a temperature limit switch. Look at the wiring diagram to locate the limit switches. They ... | |
| Wireless remote air handler shutoff system | 11/20/2009 |
| Q: I am looking for the best way of shutting off the ac system if an outside door is left open for an ... A: I have never encountered this request, but it could certainly be done. I would investigate the type ... | |
| Honeywell zone controls:How to replace | 11/19/2009 |
| Q: How do I replace a Honeywell zone valve for an apartment building hot water boiler? A picture would ... A: I do not have any photos, but basically you will need to shut the boiler down and drain the water ... | |
| oil furnace problems | 11/14/2009 |
| Q: I have a Ruud oil furnace that the flame goes out on but the blower will run continuesly. This ... A: If this is a mechanical combination switch that controls the blower and has the high temp reset ... | |
| window units | 11/12/2009 |
| Q: IS IT POSSIBLE TO PUT FREON IN A WINDOW UNIT.IF SO HOW DO I GO ABOUT IT THANKS ... A: It is not impossible to have a low charge, but with a sealed system like this one, it is less than ... | |
| Floor Furnace not drafting properly | 11/11/2009 |
| Q: HAVE REPLACED 1930 FLOOR FURNACE WITH A NEW 30k BTU COZY FLOOR FURNACE. HVAC GUY INSTALLED IT AND ... A: I would check the chimney and the old vent piping to ensure there are no obstructions. If all this ... | |
| leaking a coil | 7/16/2009 |
| Q: is there a stop leak solution to add to my central air unit to stop the leak? A: I have not seen a product that will not eventuallly affect the compressor. The leak is usually at a ... | |
| Lennox blower not working | 6/16/2009 |
| Q: I am having some problems with our Lennox furnace. It is model # G20Q2E-75-7. We came home after a ... A: With this fuse blown, there is a short in the control circuit. This could be anything from the ... | |
| geothermal heat pump | 6/11/2009 |
| Q: I'm currently trying to help an older retired military gentleman with his Snyder General/Mcquay ... A: I do not have any information on this manufacturer. You will need to contact the manufacturer to get ... | |
| condenser replacement | 6/4/2009 |
| Q: i HAVE A CONDENSING THAT HAS TO BE REPLACED BECAUSE OF DOG URINE.THE UNIT HAS WORKED FINE FOR 7 ... A: If the supply said it would mate to the unit fan section, they know what they have engineering wise, ... | |
| Ducane Heat Pump Problem | 6/3/2009 |
| Q: I have a split system Ducane heat pump and I am having an issue in cooling mode. The air handler ... A: There is a safety of some sort that has tripped. Have you tried turning off the outdoor disconnect ... | |
| heating and air for knew home | 6/2/2009 |
| Q: I am going to be building a 2800 square feet home soon. It is going to be two story an the 2nd floor ... A: Unless you can afford an elaborate control system, and even then I would still install an upstairs ... | |
| Trying to decide between contractors | 6/1/2009 |
| Q: Mr Cook, I have very limited knowledge about HVAC and hoping you can give me some tips. I am in the ... A: Keep in mind everything I am going to relate to you is based on experience with every one of these ... | |
| Distance to outside AC unit a problem? | 5/31/2009 |
| Q: We are trying to reduce our energy usage and lower the electric bill. We live in a town home ... A: If this is a typical a/c unit with refrigerant lines interconnecting the two unit devices, I do not ... | |
| Propane Furnace | 5/28/2009 |
| Q: My 4 year old furnace (Ultra Max III, Propane) refuses to start. I can initiate the blower suing ... A: The blower on every furnace is delayed when in the auto mode so the heat exchanger can heat up and ... | |
| thermostat | 5/18/2009 |
| Q: I replacing old Comfortmaker thermostat to Honeywell RTH230B. My old thermostat have following ... A: If this is a heat pump, this is not the correct thermostat. If it is not a heat pump it will connect ... | |
| safety switch | 5/17/2009 |
| Q: how do i install a safety switch for air handler drain pan? It is a model j-100 with a styrofoam ... A: This switch connects in the control circuit, 24 volts. Open the fan section and locate the ... | |
| Odd Furnace issue | 5/15/2009 |
| Q: For the second time my kids ahve put the sump pump line into the outside exhaust, leading water back ... A: Nick, having water in the unit could have created a multitude of problems. The most likely culprit ... | |
| Heatpump | 5/13/2009 |
| Q: I have a Heatpump with the air handler inside. The problem is when I put the thermostat in cool, the ... A: In a heat pump, the Y circuit brings on the compressor whether in heating or cooling. The only ... | |
| Buying new A/C | 5/12/2009 |
| Q: I have two proposal and I would like to make the best decision. One is for Basic Amana A/C 2 tons 13 ... A: I had Carriers originally and had no problems with them. I replaced both systems with Goodman units. ... | |
| a/c odor | 5/10/2009 |
| Q: the air from the a/c vents started smelling like rotten eggs. any suggestions? A: Look carefully at all of the ductwork to ensure there is not a fitting that has separated allowing ... | |
| digital thermostat | 5/8/2009 |
| Q: I have a fan coil system for which I want to replace the very old 120V line voltage mechanical ... A: Mat, I try to help as much as possible, but with this many components and the conversion necessary ... | |
| Amana HTM EGHW100DB3 Furnace Wiring diagram | 5/7/2009 |
| Q: I need to get a wiring diagram for this unit. There is a number in the upper right hand corner of ... A: The only resource for a diagram will be the manufacturer. On most manufacturer web sites there is a ... | |
| central air conditioner | 5/3/2009 |
| Q: I just bought a new house and I am getting some cement work done on the side of the house that has ... A: It would be somewhat costly to disconnect and move. The refrigerant has to be isolated in the unit ... | |
| Thermostat has no Power | 4/30/2009 |
| Q: What could be the problem is the thermostat on the wall has no power? The AC unit itself as power, ... A: The thermostat receives 24 volt power from the internal transformer. Locate the transformer and make ... | |
| New Furnace Blower Motor | 4/15/2009 |
| Q: I just recently had a new blower motor installed in my Carrier furnance. The original one locked up ... A: Kevin, some questions to ask, is this the exact replacement motor for the original, and was the ... | |
| HVAC home units | 4/14/2009 |
| Q: I have a Goodman 2.5 ton 10 SEER heat pump system and the outside unit just went on me. I've been ... A: Jeff, by code you can not mismatch equipment. I would also be very leary of anyone saying their 13 ... | |
| Boilers/A/C remodel | 4/13/2009 |
| Q: I manage a small housing project. Five buildings with 4 apartments in each. Currently they are ... A: You have issues that can easily snowball. If the boilers are abandoned for conventional heat and a/c ... | |
| Differences in brand name A/C's | 4/9/2009 |
| Q: I am planning on getting central air installed in my house for the 1st time. I have a 2 story, 44 ... A: This is my personal opinion, but I would not install Amana if it was given to me. I just replaced ... | |
| New Yorker Oil Boiler Ignition Boom | 4/8/2009 |
| Q: Cook, I have a 147K BTU New Yorker oil fired boiler that heats my domestic water in the furnace ... A: The auxillary tank is usually much larger than you would need. A 40 gallon quick recovery unit would ... | |
| New Yorker Oil Boiler Ignition Boom | 4/7/2009 |
| Q: Cook, I have a 147K BTU New Yorker oil fired boiler that heats my domestic water in the furnace ... A: Mike this could be several things. Some are insignificant and are not a problem, but a cracked ... | |
| Moving Outdoor Condensor Unit | 4/5/2009 |
| Q: I want to build a deck but my outdoor unit (I think it's called a condensor?) is in the way. My ... A: It would depend on how far away it is now from the indoor unit. Only the manufacturer can state how ... | |
| Ruud A/C unit growl | 4/4/2009 |
| Q: My ac unit is about 8 years old in FLorida. The airhandler seems to be lounder than usual. I ... A: It does appear to be the motor bearings and a new motor would be the cheapest way out. Take the ... | |
| furnace fan works, but no heat, any ideas? | 4/3/2009 |
| Q: Cook. We have a furnace that isn't giving us heat anymore. When the temperature dips below our ... A: Try turning the power off to the furnace, wait a few minutes and turn it back on and see if it ... | |
| Finding leak | 4/2/2009 |
| Q: During a recent checkup My mom's Lennox 10 SEER 2 ton with Armstrong indoor coil has developed a ... A: An R 22 unit is pressure tested at the factory to at least 350 psi. I do not go that high, but you ... | |
| Split Air Conditioner Troubleshooting FAQ | 3/29/2009 |
| Q: I live in Florida. Our 15yr old unit is blowing warm air. The coils are not frozen but the condenser ... A: You may still have some life in this unit, but it is borderline on life. I just replaced my aging ... | |
| air handler blower will not shut off | 3/28/2009 |
| Q: I have a 2 year old ADP air handler furnace. The blower motor does not shut off when the fan is in ... A: This could be a number of problems, but I would start with the thermostat. Go to the indoor unit ... | |
| Outside Heating Unit | 3/27/2009 |
| Q: I read a post from 2006 that had asked you about a noise their unit would make when the temperature ... A: Gina a generic noise is very difficult to diagnose. Look at the outdoor unit while it is making this ... | |
| HVAC ducts | 3/26/2009 |
| Q: We live in Southern Calif. Our house has no AC/Furnance. We are having a new HVAC system installed. ... A: With the ducts in the crawl space, I would opt for the solid metal instead of the flex. Also be sure ... | |
| i have a question | 3/25/2009 |
| Q: Im in school for hvac i would like to know if when the thermostat is reading the same temp as the ... A: If the heat is a fuel furnace, the fan is not controlled by the thermostat, it is controlled by an ... | |
| heat pump | 3/22/2009 |
| Q: I have to change out a air to water heat pump.I want to go to a boiler either electric or lp gas.I ... A: LP gas has not increased as significantly as other fuels, but electric still appears to be the most ... | |
| Replacing furnace/AC | 3/20/2009 |
| Q: I live in Minnesota and last year bought a 30 year old, 1800 sq. foot 2-story townhouse. New windows ... A: Personally I think most of this is blowing smoke. It would require an engineer to test this system ... | |
| Replacing furnace/AC | 3/19/2009 |
| Q: I live in Minnesota and last year bought a 30 year old, 1800 sq. foot 2-story townhouse. New windows ... A: Paula I am sorry to say, but I would be skeptical of every one of these contractors. With the ... | |
| Air conditioning | 2/24/2009 |
| Q: I have no power to thermastat, new relay, no power from transformer. I have been looking for a fuse ... A: At the transformer, verify there is 240 volts feeding it and there is 24 volts leaving it. If you do ... | |
| A/C UNIT | 2/23/2009 |
| Q: Mr Cook, thank you for your time. I have a few questions. There is a guy on Craigs list selling York ... A: Several things Chuck. You did not give a price. Second, I would be very leary of internet sales. ... | |
| Goodman Heat Pump blows no warm heat | 2/21/2009 |
| Q: Propane is on. Heat pump led is blinking 3 times, replaced thermostat, and air blows, just no heat. ... A: There are two separate units involved. If you have propane, this should be the heat pump back up ... | |
| Water in heat & air vents | 2/19/2009 |
| Q: Last night in the spare bathroom the piece behind the toilet busted, sending water everywhere. The ... A: At the lowest point of the duct you can drill a hole or several in different places to allow the ... | |
| forced air hvac heating system | 2/13/2009 |
| Q: I have tried to restart my heater by pressing the restart button;the pump or motor start but the ... A: Try turning the power off to the unit, wait 5 minutes and turn it back on. If it works even for one ... | |
| flooded boiler | 2/12/2009 |
| Q: I have a 50+ yr old Bryant hot water gravity boiler system in my home. I mistakenly added water ... A: A lesson learned, the someone who had you add water has created a problem. Overpressurizing the ... | |
| Rudd furnace shutting down | 2/11/2009 |
| Q: I have a Rudd 90 Plus, the furnace is doing 2 different things: flame shuts down but the fan/blower ... A: The fan is controlled by a fail safe control to keep the fan on to prevent the heat exchanger from ... | |
| Programmable thermostat installation | 2/10/2009 |
| Q: I am replacing a standard thermostat (FHP Manufacture, Simple comfort)with a Honeywell Focus ... A: All of the wiring is correct Jim. With an O terminal, this stat is specifically for a heat pump and ... | |
| Buzzing combustion blower | 2/9/2009 |
| Q: I spotted your response to another question about a buzzing draft inducer motor, and wanted to add ... A: With the motor buzzing, it is getting power, although you could verify this with a volt meter to ... | |
| gpc/gph package unit electric heat pump | 2/7/2009 |
| Q: I our unit is 6MO. old We notices that when the unit goes into defrost mode the outside fan still ... A: The thermostat will have no control over the outdoor fan in defrost mode. This is strictly ... | |
| RUUD A/C System Filter Location | 2/6/2009 |
| Q: Where is the filter for the RUUD UBHK-24J11SFD Home System? A: The factory location is inside of the access panel directly where the return attaches to the unit. ... | |
| Grommets at freon lines. | 2/5/2009 |
| Q: I am a (12+ years) home inspector in Florida trying to be accurate. I see rubber grommets missing on ... A: The HVAC tech. The grommets are there to prevent the vibrating refrigerant lines from eventually ... | |
| Goodman? air to air pump? | 1/31/2009 |
| Q: The unit is uncovered up against the house, and snow drifts are covering the unit. I try to shovel ... A: I had a similar problem with water dripping off of the roof and freezing on the coils. You can build ... | |
| Carrier Furnace fan stays on, but no heat or A/C | 1/30/2009 |
| Q: I live in Southern California and have a Carrier furnace model #28RC024000, serial #Y769329. The ... A: The fan in heat mode is actually not controlled by the thermostat, it is either controlled by a ... | |
| Rheem Criterion Gas Furnace | 1/29/2009 |
| Q: Where is the air filter on my Rheem Criterion Gas Furnace and how do I change it? A: Depending on how the contractor installed the duct system, it will either be in the factory portion ... | |
| New Thermostat and secondary Heat | 1/28/2009 |
| Q: I installed a new Hunter programable thermostat model 44760 on my heat pump system. Since ... A: I do not have a diagram for this particular stat, but the strips should be wired to the W or ... | |
| fridge | 1/25/2009 |
| Q: kenmore cold spot 2001 model 51252101 year 2001 seareal fl3527597 my fridge has been humming for 2 ... A: Look at the rear of the refrigerator and see which part is humming. It may be the fan that cools the ... | |
| Aprilaire Steam Humidifier Controlling Rheem Furnace | 1/24/2009 |
| Q: I have a Rheem Criterion RGDG-12EARJR furnace which works just great. Added an Aprilaire 1150 Steam ... A: Tom, it would require a somewhat complicated installation of a 24 volt relay added to the control ... | |
| boiler | 1/22/2009 |
| Q: I have a hot water boiler in a boiler room of my office building Slab foundation. The pipes from the ... A: Unfortunately there have to be air bleeds and with the piping going above the ceiling, this is where ... | |
| no power to t-stat or unit | 1/21/2009 |
| Q: i have a Bryant system my unit stopped working about two weeks ago in the middle of the night the ... A: If the thermostat does not have power, the indoor unit first needs to be tested to ensure it has 240 ... | |
| 220v air handler motor | 1/20/2009 |
| Q: i have been given a 220v squirrel cage with 5 colored wires coming right out of the motor. i'd like ... A: Mike, unfortunately manufacturers do not use a common color arrangement. You will either need to get ... | |
| Oil Heating Issues | 1/18/2009 |
| Q: i have a weils mclain oil heating system; i had our contractor out yesterday cause the system shit ... A: It is not a thermostat problem. There may be a safety control either doing its job or failing. Since ... | |
| Central Cooling Help | 1/17/2009 |
| Q: I have little experience in cooling systems. I am building a bilevel/hi-ranch house of 2,243 sq. ft. ... A: Jessy I commend you on seeking advice. I want you to get the best deal for your investment. I ... | |
| lennox furnace | 1/15/2009 |
| Q: J - I have a G40UH series Lennox furnace that has been acting up. Intermittently the temp will drop ... A: JR this could indicate a number of problems. Turning the stat down and back up or off and on resets ... | |
| Replace or Repair | 1/13/2009 |
| Q: We have a Carrier 58sx-120 propane gas heater(furnace) that is out. We were told it is roughly 20 ... A: I personally would replace the system at this age on any gas furnace, however in my opinion I would ... | |
| interlock | 1/11/2009 |
| Q: what would cause your furnace to ignite when using your kitchen hoodfan when the interlock should ... A: I am not sure who said the furnace fan will replace the exhausted air, but this is not the case. You ... | |
| gas boiler furnace | 1/10/2009 |
| Q: i have a gas boiler furnace that has four pipes forcing water into separate sections of the house. ... A: In my own opinion, the first problem is the White Rodgers controls. In my opinion, they are the ... | |
| burning smell from heat pump | 1/9/2009 |
| Q: Tonight we noticed a burning smell coming from the vents. We turned the system off but wanted to ... A: This is a very common occurance with a heat pump IF the strip heat has not been energized in some ... | |
| Heating ducts | 1/7/2009 |
| Q: This question stems from a Q&A I had with another expert earlier this evening... here is a copy of ... A: You did not say if you have a/c on this unit, but according to mechanical code, the duct system does ... | |
| Goodman Draft Induction Fan Keeps Cycling On and Off | 1/6/2009 |
| Q: Here is my situation: I have a Goodman (gulp) gaspack Model PGB042125-1 that is approximately 8 ... A: You should be able to download a diagram with the unit model and serial number from the manufacturer ... | |
| Tempstar Furnace Problems | 12/17/2008 |
| Q: How do I test if I'm getting any signal to the gas control valve? It is a Honeywell VR8204-2050. ... A: If you are not getting a spark or clicking, this has to happen before the pilot valve opens. This is ... | |
| unit is inop. | 12/16/2008 |
| Q: My Question is what can check to see why my ac and heater will not turn? The blower will not turn ... A: To have directly jumpered what you did with the thermostat wiring and it did not operate, I suspect ... | |
| burning smell coming from gas heating vents | 12/14/2008 |
| Q: Three days ago my gas heating system was repaired. It is a fan assisted combustion gas furnace. ... A: I would fear the heat exchanger overheated and cracked. I would have the exchanger examined by a ... | |
| 2 ton unit by fedders | 12/13/2008 |
| Q: i just purchased a 2 ton unit by fedders, my friend told me that fedders is junk compared to trane ... A: Every manufacturer goes through some sort of changes. Trane was purchased some years ago by American ... | |
| comcord 80 | 12/11/2008 |
| Q: My code on my valve ( 2 blinks) indicates that the presure switch is closed and should be open. Is ... A: You are correct, the pressure or vacuum switch is the same. It is a fail safe switch so in the event ... | |
| Furnace Armstrong Ultra Tech V 80 | 12/10/2008 |
| Q: I have an Ultra Tech V since 5 years, and it use to work very fine. This year, burners goes on up to ... A: The fan is most likely controlled by a circuit board. Either the device sensing the temperature or ... | |
| HVAC Residential Heating Problem | 12/6/2008 |
| Q: I have a Day & Night split unit with the fan coils in the attic and the condenser outside. The unit ... A: In a unit of this age, it is most likely a mechanical device that heats up to bring the heat on. It ... | |
| mitsubishi Mr. Slim mini split | 12/5/2008 |
| Q: I just bought a 12000 btu 17 seer mr. slim heat pump. The model number is MSZA12NA and MUZA12na. I ... A: I was not referring to the condensate, in heat mode, the entire outdoor coil will ice over, as it is ... | |
| TRANE ELECTRONIC AIR FILTER PERFECT FIT TFE215A1AH30 SERIAL NUMBER: 4423BBPAW | 11/24/2008 |
| Q: I STARTED HAVING PROBLEMS WITH THIS AIR FILTER IN THAT WHEN THE UNIT IS ON THE GREEN LIGHT BLINKS ... A: The transformer humming is totally normal. It seems that the sensor is too sensitive in the unit ... | |
| Replacing an air filter | 11/24/2008 |
| Q: I have a new air filter for my Rheem hot air gas heater, but I can't figure out where it goes. Can ... A: Every unit has a filter rack built into the return side of the fan section that is inside. During ... | |
| Thermostat/furnance occasionally don't communicate? | 11/23/2008 |
| Q: About once a week my furnace won't kick on even though the temp on the thermostat is below the ... A: It has nothing to do with the thermostat. There is a safety control that is occasionally tripping ... | |
| Heating | 11/22/2008 |
| Q: Have a carrier furnace model #58GP050CA can get the furnace to light and kick on but after a short ... A: The same answer applied to the previous questioner. It is either a safety control shutting the ... | |
| Tappan Heater | 11/22/2008 |
| Q: I have a Tappan heater that the burners start up and fan starts up then just seconds later the ... A: There is a safety control that has either failed shutting the burners down, or it may be doing its ... | |
| Concord Furnace | 11/21/2008 |
| Q: We have a Concord furnace 46555-001/B. When the we turn the furnace to heat, sounds come for the ... A: Most likely you are hearing the inducer motor that exhausts the vent gases. It is the first ... | |
| new noise from heat pump | 11/20/2008 |
| Q: We have 5 ton Goodman 13 seer, which was installed in July 2008, no warranty,long story. Absolutely ... A: The sound you are hearing is most likely the unit either going into defrost mode or when it cuts ... | |
| Amana Air Command won't heat - closed pressure switch? | 11/20/2008 |
| Q: I have an Amana Air Command 90 HVAC unit, natural gas. The induced draft motor runs continuously, ... A: The pressure switch actually works in reverse. When the inducer fan is blowing, it opens the ... | |
| Trane electric fan works but no heat | 11/19/2008 |
| Q: "What steps should I take to get my AC unit to heat? Also not sure if outside unit is suppose to run ... A: I am not sure what type of heat you have. If you have a fuel furnace, the outdoor unit will not run ... | |
| AC/Heat Pump issue | 11/18/2008 |
| Q: Pipes leading from outside unit to inside furnace are covered with frost. Outside unit will turn on ... A: Typically when frost develops on the lines, it indicates either a low unit charge or a restriction ... | |
| No Hot water | 11/18/2008 |
| Q: I have an oil burner furnace with a tankless coil and cad cell type primary . I went to take a ... A: I agree there is most likely a restriction. If you do not have a filter on the fuel line, it needs ... | |
| outside unit buzzing, | 11/17/2008 |
| Q: Hey I hope you can help. It's cold in this part of Florida and we've had the heat pump running. ... A: It may be tranferring the sound, but most likely it is the reversing valve you hear buzzing. Check ... | |
| system won't come on - thermostat won't come on | 11/17/2008 |
| Q: I was labeling fuse box, turning fuses on and off to identify. Now the thermostat is not working. ... A: There is a good chance the power surge took out the transformer in the unit or blew a fuse in the ... | |
| HOT BOX | 11/16/2008 |
| Q: Mr. Cook, Before I even ask my question have you ever did a installation of a outdoor hot box that ... A: Yes, we have a number of them on the site I am located at. We encountered so many problems with the ... | |
| Hot water furnance / pressure | 11/14/2008 |
| Q: I have a chromolox hot water furnance where the boiler is electric. My question is this - my ... A: There is a water regulator at the water inlet. It either needs to be adjusted or replaced. Sometimes ... | |
| Thermostat hook up | 11/14/2008 |
| Q: I have a older furnace that I tied a new air handler and AC unit to.The Furnace has only 2 wires for ... A: This appears to be a strange system as a typical furnace has its own blower, but an a/c air handler ... | |
| Goodman GMH95 Heat Off Delay(blower) | 11/13/2008 |
| Q: My furnace instructions say I can change the heat off delay time for the circulator blower when the ... A: I tried to find the manual on the Goodman site for this unit without success. Call a Goodman ... | |
| Blown fuse (3amp) in furnace | 11/13/2008 |
| Q: The 3amp fuse in the furnace blows when i turn on our system, hot or cold. It is a Honeywell ... A: There is a short somewhere in a control device or the wiring. Look for a damaged wire, if nothing is ... | |
| gas furnace flame roll out sensor | 11/12/2008 |
| Q: on a service call i ran into a RPG2 gas furnace that gave me a blink code of 5. this code is for a ... A: This device is an orifice. It will have to be replaced as attempting to clean it will change the ... | |
| replace or keep heat pump unit | 11/11/2008 |
| Q: I have a new rheem heat pump that was never never fulley set up and is 4 years old. the service ... A: The technician is correct. Manufacturers stopped making 10 seer units January 2007 and to find a 10 ... | |
| Aire-flo furnace won't respond | 11/11/2008 |
| Q: Mr Cook - thanks in advance for answering my question. I have a 5 year old Aire-flo furnace - my ... A: With no standing pilot, the unit has electronic ignition and an ignitor either glows, or a spark ... | |
| electronic ingition | 11/10/2008 |
| Q: I run a non-profit making free home repairs. I have a client whose furnace will not start, the light ... A: On an ignition failure, with the ignitor having power to it but not lighting, I would believe the ... | |
| boiler and hot water heater | 11/10/2008 |
| Q: My MIL is on a fixed income. This means my DH is usually the one that repairs things in her home. ... A: Since both are connected to the same water line, with only one off the water is back feeding into ... | |
| fabric cover for metal frame washable filter? | 11/9/2008 |
| Q: Because my filter size must be special ordered on the internet and because I prefer to change the ... A: It would most likely restrict the air flow too much and cause a compressor failure. An alternative ... | |
| Furnace heat will not come on | 11/8/2008 |
| Q: I have a 1990 Goodman Mfg. furnace model #GUPI 100-4. The aircondition runs fine, but when I switch ... A: I do not believe you need a new unit at this point, but this old of a furnace needs a good heat ... | |
| central heat no auto fan | 11/7/2008 |
| Q: wondering if i can get some advice on my home's central heat and a/c unit. my house has a General ... A: Brian this is a very common question. In a/c mode the thermostat directly controls the fan and ... | |
| 2001 Amana High Eff Gas fired warm air furnace | 11/7/2008 |
| Q: I have someone I can buy one from as mine is dead. Any info would be great I don't want to pay too ... A: Amana is no different from many other products. 20 years ago many products were built to last. Today ... | |
| Holly Home Forced-Air Heater - Fan stays on | 11/6/2008 |
| Q: I have a Holly brand forced-air heater in a closet-type space. My thermostat works fine, as the ... A: If the summer switch is turned off, the fan is supposed to be controlled by either a timer or most ... | |
| 2001 Amana High Eff Gas fired warm air furnace | 11/6/2008 |
| Q: I have someone I can buy one from as mine is dead. Any info would be great I don't want to pay too ... A: In my opinion Amana is a very low end unit and considering this one is already 7 years old and a ... | |
| Armstrong Heat Pump | 11/5/2008 |
| Q: Looking for a wiring diagram for an old Armstrong heat pump model SHP10A24A-1A. Is there any where ... A: There will be contact information on their site, either by phone or E-mail. I would contact them to ... | |
| Insulating hot water pipes from a gas furnace | 11/5/2008 |
| Q: I live in an old Brownstone building in Boston, with 6 condo units that are heated by a gas / ... A: Any tape will deteriorate the glue and it will eventually loosen or fall totally off. I am not sure ... | |
| new HVAC install Ruud vs York | 11/3/2008 |
| Q: what is your opinion of York's ultra energy efficient hvac equipment. we are looking at their 98% ... A: For answering purposes, understand this is merely my opinion. We have experienced so many problems ... | |
| Aire-flo furnace won't respond | 11/2/2008 |
| Q: Mr Cook - thanks in advance for answering my question. I have a 5 year old Aire-flo furnace - my ... A: It will not have a theromocouple persay if it is an automatic ignition unit. Do you know if it is a ... | |
| forced air propane furnace | 11/1/2008 |
| Q: I would be interested in hearing your opinion about my situation. At the end of January (2008) I had ... A: Without knowing the entire structure construction it is difficult to say if this is excessive, but ... | |
| Furnace won't start/air in pipes | 10/31/2008 |
| Q: J, Recently, there has been air building in the pipes of my baseboard heat. It was sounding like a ... A: There may be multiple problems, but to eliminate the air will be the starting point as it may cure ... | |
| amana | 10/31/2008 |
| Q: I am looking to get a new heat/ac central system.I am looking at an Amana. The contractor is ... A: I personally do not care for an Amana. I agree the Trane, American Standard and Carrier are ... | |
| downstairs heater not working | 10/30/2008 |
| Q: hey how are ya, 4yr old house with dual units/controls went downstairs this morn and it was ice ... A: Try turning the breaker off and back on. This will reset the control circuit. If it starts and ... | |
| new gas furnace Ruud achiever 90 plus | 10/30/2008 |
| Q: about a year ago I had the furnace (above) put in my home. I kept saying that it was not ... A: I would go directly to the Ruud rep who was there. There is a component that controls the fan, in a ... | |
| forced air heat and ac/coleman evcon furnace | 10/28/2008 |
| Q: I recently purchased a used mobile home and the furnace works but not quite right. The vent fan ... A: I don't believe it is a wiring problem since it will work for several cycles. You are correct in ... | |
| Oil Heat | 10/27/2008 |
| Q: .. I have oil heat, which heats my home and water. I try to be conservative (for obvious reasons) ... A: Neal I see a couple things that may be better. First, I would install a water heater so the furnace ... | |
| Replaced thermostat and doesnt work | 10/25/2008 |
| Q: I recently bought a new thermostat at home depot, it is a generic, one size fits all. I followed the ... A: If you tried to replace it without turning off the power to the unit, the low voltage transformer is ... | |
| oil heat | 10/23/2008 |
| Q: heat was off till yesterday , we tried to turn on it clicks but nothing happens. I checked the ... A: First, make sure the thermostat is set for heat and turned up. Go to the furnace and there will be a ... | |
| New Furnace | 10/22/2008 |
| Q: Are there any good reliability statistics for gas furnaces? So far, I've only seen anecdotal ... A: Payne, Bryant and Carrier are all manufactured by Carrier, so all of these would be comparable. I ... | |
| American Standard Freedom 78 | 10/22/2008 |
| Q: I just started it up tonight and I noticed a red blinking light through a round glass peep hole ... A: I do not have the manuals for equipment, but this is usually a code that either indicates a problem, ... | |
| circuit board on trane xe80 furnace | 10/21/2008 |
| Q: furnace burners would light within 3-5 seconds would go out light on circuit board would constanly ... A: I do not have the wiring diagrams for either of these boards. I never recommend a universal part ... | |
| smell coming from vents | 10/20/2008 |
| Q: There is a fishy smell coming from the downstairs vent. It is pretty potent. The smell is there ... A: Sometimes debris gathers on the indoor coil and will create obnoxious odors. Try cleaning the indoor ... | |
| Gas Hot Water Tank Exhaust Capacity Requirement | 10/20/2008 |
| Q: I have a 40gal HW Tank. It has a 3" exhaust at top going into a 4" duct into an old chimney. If I ... A: Every manufacturer is different. You will have to see what the specific manufacturer recommends for ... | |
| Keeping a constant temperature | 10/19/2008 |
| Q: In my home I have two air conditioner units for my two story house. The one for the lower level does ... A: Make sure the thermostat is not in a draft area, in that there is not a supply vent blowing on it or ... | |
| A/C | 10/18/2008 |
| Q: Can you tell me what might be causing my A/C to work only when my digital thermostat is set to the ... A: It appears to me that some wiring is switched. The a/c unit may be wired to the fan switch. In heat ... | |
| Will a chimney cap keep pilot light from going out? | 10/17/2008 |
| Q: Each winter we have instances of our pilot light going out on our boiler( Teledyne Laars Mini ... A: I have to take exception to the thermocouple not allowing the pilot to go out. If it fails, it can ... | |
| American Standard gas furnace | 10/16/2008 |
| Q: Our old furnace (22 years old) has been found to have a crack in the heat exchanger. The maintenance ... A: I would recommend having several contractors quote on a change out to compare prices and equipment ... | |
| hvac intermittent start trouble | 10/16/2008 |
| Q: and Thank You for your time, I have an American Standard Freedom 90 unit installed 4/2004 - last ... A: I would be very concerned that with this long of a vent pipe with so many bends has backed up the ... | |
| tankless electric water heater closed loop radiant heat system | 10/15/2008 |
| Q: My home was built in 1921 it has an old oil burning hotwater heater with a recirculating water pump. ... A: Yes. I have serviced a number of retail department stores that have been heating with tankless units ... | |
| typical voltage boiler wiring | 10/15/2008 |
| Q: need typical wiring diagram for steam boiler.. installed new power flame burner and now lost my low ... A: Every manufacturer has a different control diagram. You will need the model and serial number of ... | |
| Refilling a closed baseboard boiler heating unit. | 10/14/2008 |
| Q: I recently went into my basement and found out that my circulating pump (B & G series 100) was ... A: Since the unit has been operating, there has to be some point of bleeding the air. There is no way ... | |
| Armstrong Ultra 80 won't ignite | 10/8/2008 |
| Q: I’ve got an Armstrong furnace that won’t go past the pilot ignition stage. What it does when I call ... A: I would try jumping the pressure switch, but on most units, if the pressure switch does not make, ... | |
| Setting up outdoor wood boiler | 10/7/2008 |
| Q: Thnaks for taking this question. Heres the situation. I built my own house and did everything but ... A: I really appreciate the opportunity, but the liability of designing the operation of a boiler ... | |
| Boiler runs water continuously | 10/5/2008 |
| Q: I have a series 2 burnham burner it is about 17 years old. I had to shut it down when a tenante ... A: At the highest point of the piping there should be bleeder valves that are similar to a tire valve. ... | |
| Fan/ Limit switch stuck on | 10/4/2008 |
| Q: Occasionally a Honeywell fan/limit switch (controlling a duct blower far away from the ... A: The limits will be set to some value, but I am wondering if the limits need adjusting on the ... | |
| will changing thermostat help | 10/4/2008 |
| Q: i am staying in a 20 story apartment block, which has centralised aircon. I hve a couple of issues. ... A: I am not sure if each individual is resposible for their own system in this case or if the owner ... | |
| HARD START | 10/3/2008 |
| Q: INSTALLED A NEW GOODMAN AC WITH NEW GAS FURNACE. IT IS A 14 SEER R22 COPELAND SCROLL COMPRESSOR. ... A: YEEEEEEEEEEEEEEEES!!!!!! He has enough refrigerant in this system for 5 units! I would call the ... | |
| How to locate a leak in a home a/c heater coil | 10/2/2008 |
| Q: Can you tell me how to locate a leak in my home a/c system? Background: Its less than 3 years old ... A: First, I would not continue running the unit knowing the charge is low. The refrigerant of a system ... | |
| York Diamond 80 furnace | 10/2/2008 |
| Q: My York Diamond 80 furnace was installed 5 years ago and its warranty was expired. Now it stops ... A: Starting with the last, there are number of things to prolong a compressors life. Unfortunately the ... | |
| Heat exchange failure in Goodman heat pac | 10/1/2008 |
| Q: I have Goodman unit PGJ036100, 3-ton heat/air unit manufactured/installed in 2001. Am now ... A: I would talk to a Goodman Manufacturers rep and see if they will not replace the entire fan section ... | |
| HVAC replacement | 9/29/2008 |
| Q: I have a first floor, one-level condo in Northern Virginqia. The unit in my patio closet is a combo ... A: First, to determine a units size requires a very extensive load calculation. It goes so far as ... | |
| moving heat vent | 9/29/2008 |
| Q: We have a manufactured home and the heat vent for the baby's room is right where I need to put the ... A: Most likely the vent is fed by flex duct, so it should only require cutting another hole and moving ... | |
| 2.5 Ton Bryant A/C | 9/28/2008 |
| Q: "I have a 1989 Bryant 21/2 Ton Air Conditioner with a heater on the units compressor. The rubber ... A: It is not a mandatory item and most do not have it at all, but since it had it, I would replace or ... | |
| Ground on capacitor | 9/28/2008 |
| Q: When the fan motor on the outdoor unit failed I went after the cheap fix and replaced the capacitor. ... A: A true ground wire will not connect at all to a capacitor. I am not sure what this wire is, but if ... | |
| coil size vs. compressor size | 9/27/2008 |
| Q: Can you please tell me if it would be standard practice to place a 3 ton coil in with a 3 1/2 ton ... A: Actually due to the excellent service from the Goodman's at work, I replaced both of my Carrier ... | |
| Control wiring | 9/26/2008 |
| Q: I installed a split system air handler with an AC coil along side my old oil furnace. How do I wire ... A: The new stat does not have duel transformer capability so the transformer in the furnace will have ... | |
| central air | 9/24/2008 |
| Q: Our old singer unit finally died. Anyways we are currently getting quotes from a few different ... A: By some manufacturers they are compatible. Rheem is a lower end unit, simply because of the quality ... | |
| residential hvac question | 9/23/2008 |
| Q: I have a Lennox model# EV-41-M which seems to "run" almost all the time. when you flip the swicth to ... A: The contactor may be stuck on the outdoor unit. Turn the power off at the outdoor disconnect and ... | |
| Kenmore Dryer Won't Turn On | 9/22/2008 |
| Q: My Kenmore dryer ticks when the timer is set, but either will not start or will run for 5-10 seconds ... A: This is not going to be a simple fix. Your husband needs a good voltmeter to diagnose this. Tell him ... | |
| Heatpump/return air | 9/19/2008 |
| Q: I have a one story 30x90 rancher built in the mid 70's. I live in southern Delaware where we have ... A: I would not run the unit with the wood stove returning into the unit as it will create false ... | |
| HeatPump HVAC Ran Heating to 100F | 9/19/2008 |
| Q: I have a Goodman Heat Pump HVAC controlled with a Simple Comfort 2200 thermostat for one room. We ... A: You are correct that the battery only maintains the time and program. The 24 vac operates the unit. ... | |
| Fan motor | 9/18/2008 |
| Q: J Could you tell me How to find out Fan motor is bad or not,How to check by meter the motor is bad? ... A: First be sure it is not the capacitor. A failed capacitor will make the motor hum but not start up. ... | |
| Thaw appliance | 9/17/2008 |
| Q: I Mr. Cook. I am a Refrigeration Mechanic working for two Hospital in Quebec, i have a meat thawing ... A: Mike, in 30 years of refrigeration experience I have never heard of a meat thawing appliance. It ... | |
| BOILER | 9/16/2008 |
| Q: Ok I am not a expert and have no anything about boilers. I had a boiler burn in a fire in our ... A: By the specs on this unit it can either be used as a hot water boiler or a steam boiler, you did not ... | |
| Breaker keeps tripping & outside unit wont start. | 9/15/2008 |
| Q: The circuit breaker keeps tripping for the outside unit when it should start. As soon as the ... A: With the outdoor disconnect off, open the access panel and locate the contactor. On one side, the ... | |
| Residential A/C | 9/14/2008 |
| Q: I have two questions. First, I am replacing an old R-22 AC system with a system that uses R-410. I ... A: First, do not reuse the line set, not only may it contaminate the new system, I do not see how the ... | |
| gas won't flow | 9/13/2008 |
| Q: I have a Godman gmp100rev4 furnace. Everything works except the gas won't come on. The draft and ... A: I would have suspected the circuit board as the ignitor must prove via the circuit board before the ... | |
| New Heating/Cooling system | 9/12/2008 |
| Q: I have a home that was built in 1977 in southern California. The Evaporator cooler is leaking ... A: I will give you my opinion on each issue. I just replaced both of my aging Carrier heat pumps with ... | |
| system not cooling as much as before | 9/11/2008 |
| Q: I have an office with a 3.5 ton system (Rheem condenser R-22) which is just under 2 years old and ... A: There is a restriction somewhere in the refrigeration lines. The low side is a little low, it should ... | |
| Mobile home filters | 9/9/2008 |
| Q: I Have a single wide mobile home and where the filter goes in the return looks like it has metal ... A: I would measure the track to see exactly what size will fit, locate your local HVAC or refrigeration ... | |
| HVAC Problem | 9/8/2008 |
| Q: I am working on a 5 yr old heatpump, it's a Goodman at my workplace. It never worked correctly when ... A: This seems to indicate an overcharge. The suction should not be over about 65 and the high side not ... | |
| A/C not working at all | 9/6/2008 |
| Q: i woke up this morning with no a/c. I got up and turned the thermastat down, it still did not kick ... A: The indoor fan is on a separate breaker from the outdoor unit. If you have no indoor fan or the ... | |
| Ice forming on Air Handler in Hallway closet | 9/6/2008 |
| Q: I have ice forming on the fins in the bottom of my air handler unit which is located in the hallway ... A: Two things commonly cause icing. Low air flow and a low refrigerant charge. If the filter was dirty, ... | |
| Thermostat Replacement | 9/5/2008 |
| Q: I just purchased a Honeywell RTH7500 programmable thermostat for our heat pump. It's a new (to us) ... A: One connection is missing, the O terminal which is the reversing valve to convert from a/c to heat. ... | |
| FREIDRICH WALL UNIT | 9/4/2008 |
| Q: It has been running all summer on money saver mode with the thermostat set between 66 and 70 ... A: If the fan was blowing at all, the sound appears to be of a locked up compressor. Most of these are ... | |
| ac unit not working | 9/3/2008 |
| Q: I have an air conditioner that is blowing but not blowing cold. When we first turned it on monthes ... A: The outdoor unit is on a different circuit than the indoor unit with the fan. Make sure the outdoor ... | |
| Air conditioner set 79. Less than 1 minute cycle time. | 8/29/2008 |
| Q: I was running my AC set at 80 degrees with fan on auto, but recently read that that will allow more ... A: The charge in the unit needs to be checked. This is a classic indication with it short cycling. I ... | |
| DUCT WORK REPLACEMENT | 8/28/2008 |
| Q: SAY I HAVE 6" SUPPLY METAL DUCT AND I WANT TO REPLACE IT WITH FLEX DUCT BECAUSE THE METAL DUCT IS ... A: Prices vary by region. I would call an HVAC supply, or in some areas Home Depot sells flex duct and ... | |
| compressor failures | 8/28/2008 |
| Q: I have a 4 ton inside/outside unit with gas heater that is about 15 years old. The compressor went ... A: The question I would have the technician is why he did not replace this filter with the first ... | |
| evaporator coils | 8/26/2008 |
| Q: I have two carrier 5 ton units both airhndlers and gas furnaces are in the attic. i've had 2 techs ... A: If the coils are A coils, meaning they would resemble the letter A if stood up correctly, the air ... | |
| AC: Repair or Replace | 8/26/2008 |
| Q: I just had an estimate on some repairs to my Trane upstairs heat pump which is out of warranty and ... A: If the only repair needed was the heater, I would say repair it, but with the leaking coil, I would ... | |
| fan not working | 8/25/2008 |
| Q: Our air cond/heating unit wasn't keeping up. So I went to look at it after resetting all breakers ... A: The most likely problem is the capacitor. It looks like a small can, usually either silver or gray ... | |
| Air handler condensation | 8/24/2008 |
| Q: We have a unit that is about 10 years old. Recently we were having bad drain pan overflow. Called in ... A: Condensation is caused by lack of insulation. The actual cabinet is so cool the garage air is ... | |
| Ultra V Tech 80 low air flow / no cold air | 8/24/2008 |
| Q: Two days ago my AC stopped blowing cold air through the house and the air flow has lowered in some ... A: The outdoor unit is on a different circuit than the indoor unit, so you can have a fan but no cool ... | |
| Pulsing duct systen | 8/23/2008 |
| Q: " I recently purchased a new home in FTW TX. Upon moving into the home in January I could get great ... A: You are much smarter than you repair person. You are exactly correct and it appears there is either ... | |
| Air conditioning | 8/22/2008 |
| Q: My air conditioning is not working. The fan of the furnace is also not working. I check the ... A: The outdoor unit had been working as evidenced by the iced up line. It will ice up due to the indoor ... | |
| One leaking vent | 8/22/2008 |
| Q: I hope you can help me. It rain hard the last couple of days here in texas. One vent (just a few ... A: You are seeing condensation due to the insulation being damaged somewhere on this section of duct. ... | |
| size of AC unit | 8/21/2008 |
| Q: Cook, i am buying a house which is 3000 sqft (2 floors) and basement (unfinished). currently the ... A: There is a very detailed load calculation that any good HVAC contractor can do to determine the ... | |
| Residential compressor won't shut off | 8/20/2008 |
| Q: I have Trane central A/C System with fairly new Honeywell T-stat. Occasionally in the middle of ... A: The component that transfers power from the outdoor disconnect to the compressor and fan is located ... | |
| INCORRECT FREON LINE SIZES | 8/19/2008 |
| Q: WHEN THEY INSTALLED THE FREON LINES ON MY A/C UNIT TO THE COIL ABOVE THE FURNACE THEY USED THE WRONG ... A: Since the system is already operating, I would replace the lines and see how long the system will ... | |
| Installation of Honeywell Programmable Thermostat with Bryant Puron HVAC Syster | 8/19/2008 |
| Q: I have purchased the Honeywell 7-day Programmable Thermostat, Model # RTH7500, to install for my ... A: As described, you have two low voltage transformers on the same thermostat. I do not see how they ... | |
| Nutone HVAC | 8/18/2008 |
| Q: First off, I should let you know that I've already asked this question of Craig. I know that it's ... A: The indoor unit is the difference. A full electric heat pump indoor unit is just a coil and fan ... | |
| Outdoor A/C unit not turning on. | 8/17/2008 |
| Q: My kids had turned down the temp on my a/c and had some windows open on the house with it being 100+ ... A: For it to trip the breaker, it appears more like the compressor is locked up. You can verify by ... | |
| floor vent HELP!!! | 8/16/2008 |
| Q: Upstairs each bedroom has an air-exchange on the floor instead of the ceiling or wall. Its location ... A: Not being smart at all but anything can be done for enough money. Since this is an upstairs system, ... | |
| Nutone HVAC | 8/16/2008 |
| Q: First off, I should let you know that I've already asked this question of Craig. I know that it's ... A: I live near Charlotte, so I know what you mean about the weather. I tell coworkers when its 85 one ... | |
| Furnace Blower for AC coming on and off | 8/15/2008 |
| Q: I have a 20+ year old Trane Gas Fired Forced Air Furnace (BLU055E936B1). It controls my heating and ... A: I agree it sounds like the fan limit control. On one of this age, it is most likely the bi-metal ... | |
| Heat Pump Thumping / Hammering Noise | 8/15/2008 |
| Q: We recently moved to a newly built home in Kentucky and now have an electric heat pump system, ... A: An HVAC system should NEVER need refrigerant added after the installation. If it is low on charge, ... | |
| A/C Inquiry | 8/14/2008 |
| Q: We have a trane-type A/C system for our condo unit that is situated outside the house. The ... A: The indoor unit is on a separate circuit from the outdoor unit. The piping is frosting because there ... | |
| hvac needs for family fun center | 8/14/2008 |
| Q: we have a 9000 square ft warehouse space that we are converting to a childrens center. we expect ... A: Actually I do not believe that will be enough. You need to contact a local HVAC contractor to do a ... | |
| Heat pump freezes up | 8/13/2008 |
| Q: Last month had compressor replaced on heat pump which is new and still under warranty. Last week it ... A: I live near Charlotte myself. I do not blame you for being skeptical. There is no reason the filter ... | |
| propane heat non-ignition | 8/12/2008 |
| Q: I have propane heat (also for hot water). Regularly the system will call for hot water, but the ... A: There is some sort of safety tripping. On a gas unit of any kind there are several and those can be ... | |
| Goodman condenser compressor | 8/12/2008 |
| Q: My son had a condenser replaced with a Goodman brand last November but the contractor did not test ... A: I also purchased two Goodman units within the past year, and no seal was on either of them, so as ... | |
| heat/aircondtion | 8/11/2008 |
| Q: we have a trane weathertron xe 800 made 7/1990. the problem is, the indoor furnace fan runs.thru the ... A: If the capacitor and contactor have been replaced and the motor still does not run, the motor has to ... | |
| AC/PROBLEMS | 8/11/2008 |
| Q: I have a new unit York 5 ton (installed about 1 1/2 years ago). My unit seems to run longer than ... A: Actually this is a very accurate test of a system and a system in good working order should have ... | |
| Dripping copper tubing | 8/10/2008 |
| Q: We went down to finish installing plastic sheeting in our crawl space and noticed some puddles on ... A: It is not a serious problem at this point although you never want standing water under the house. ... | |
| small steam radiator | 8/9/2008 |
| Q: There are 11 units in a building with steam heat. One of the room heaters won't shut off when the ... A: The first thing is to kill power to the boiler always before shutting off the water. If the boiler ... | |
| A/C Problem | 8/8/2008 |
| Q: Cook, I live in Arizona and as you know it gets quite hot here during the summer months. My A/C ... A: I agree there is something wrong, but at the same time the technician is one of my own, so I have to ... | |
| condensor/compressor | 8/7/2008 |
| Q: the condenser was freezing up. Tech said it had a leak. Replaced condensor, now it will reach temp ... A: Possibly, but I feel more like the unit is now overcharged which is heating up the compressor while ... | |
| Intertherm A/C problems | 8/7/2008 |
| Q: We are having problems with our Intertherm Central air outside unit. Lately, we have noticed that ... A: I am afraid that is the compressor trying to start but appears to be locked up. There is a very slim ... | |
| Kenmore side by side refrigerator | 8/6/2008 |
| Q: Freezer won't get below 20 degrees. Refrigerator holding steady at 40 degrees. Coils are all ... A: There could be some hidden ice in the unit. Try removing all contents and unplug it for a full 24 ... | |
| Central Air Conditioning | 8/6/2008 |
| Q: I have a Miller Air conditioner,It is about 6 years old.Last year it worked fine, this year when you ... A: When this happens, is the outdoor unit still running, there is just no air blowing? If so, it is ... | |
| air conditioner | 8/4/2008 |
| Q: I just had my compressor replaced (it was under warranty) worked okay for a couple of weeks then ... A: If the fan stayed on while the compressor cycled, it was cycling on internal heat overload and has ... | |
| btu calculation | 8/3/2008 |
| Q: im thinking 6000btu will cool but i see on another site to add 4000 btu for no insulation and 600 ... A: You will not believe all components required to do a proper calculation. You have a good start, but ... | |
| lennox unit | 8/2/2008 |
| Q: i have a lennox hvac model c23-31-1 and it just recently started leaking water around the entire ... A: This is indicating either the drain line is clogged or the condensate pump if it has one is clogged ... | |
| Tonnage Needed | 8/1/2008 |
| Q: We are installing a HVAC system and need to know how what size unit to use. The sanctuary is 3500 ... A: The only way to determine the size of equipment if for a load calculation to be performed. This ... | |
| R-22 freon | 7/31/2008 |
| Q: I had a repair of a coil leak on my Rheem heat pump. The charges included $382 for 6 1/2 pounds of ... A: It depends on the area and the amount of time involved for part of the equation. You also have to ... | |
| hot refrigerator inside | 7/30/2008 |
| Q: What can make the frigerator be 80 degrees inside, while the freezer is working? No air, or very ... A: All of the mechanical refrigeration is in the freezer of a residential refrigerator, so if the ... | |
| HVAC unit | 7/29/2008 |
| Q: I have a Goodman 3.5 ton outside air conditioner that I would like to use to replace a 1.5 ton unit ... A: No! The indoor unit is matched in capacity to the outdoor unit and this will not work. Sizing a unit ... | |
| a/c not working | 7/28/2008 |
| Q: My central a/c stopped working today. The unit inside is turning on but the fan and condensor ... A: Any a/c or refrigeration supply will have good coil cleaners with detailed instructions, but it may ... | |
| fan motor not running | 7/27/2008 |
| Q: I have a trane xe1000 unit that the fan motor is not running. This unit is for the upstairs in our 2 ... A: I agree that the buzzing sound may likely be the motor trying to start but cannot due to a damaged ... | |
| air conditioning | 7/27/2008 |
| Q: I recently had two new condensors installed but keep the same Air handlers in attic, it has has ... A: Hot air is subject to interpretation. If the air seems to actually be heated air, there could be a ... | |
| AC fan doesn't always shut off | 7/26/2008 |
| Q: We have a central roof mounted AC unit and sometimes, the fan does not shut off and will run ... A: I would suspect the fan relay more, but one way to verify, when the fan does not cut off, remove the ... | |
| New thermostat hookup help on multistage heat pump | 7/26/2008 |
| Q: I am trying to replace my Weathertron thermostat on my trane system with a digital Hunter thermostat ... A: You will have to do some investingating for the C or common wire, it is either the current black or ... | |
| Pump Down | 7/24/2008 |
| Q: What is Pump Down? Tanks for your help,,,, A: Pump down refers to the closing of a valve in the refrigeration circuit to allow the refrigerant to ... | |
| Helpe | 7/23/2008 |
| Q: What is the d/t b/n start relay and start capacitore? when I checked the presure of high and low ... A: The dt is the defrost timer, I can not figure out anything that would be a bn, the start relay and ... | |
| two air conditioner home | 7/22/2008 |
| Q: Ok i have a 2800 sq foot home with 2 air conditioners. Im just trying to figure out my best option ... A: It depends on how the home is used. I also have a two story two unit home. I have a sitting room ... | |
| Blower motor problem | 7/20/2008 |
| Q: I have a blower motor that its look like is running weak therefore is blowing a weak air out off the ... A: There really is not a way to test the motor, it will either work or not, but you can replace the ... | |
| Condenser running backwards | 7/19/2008 |
| Q: The fan on my condenser unit started spinning backwards(air flow down. It is a RUUD Scroll condenser ... A: Occasionally the wind will have the motor spinning in reverse and when it powers, it will continue, ... | |
| pipe | 7/18/2008 |
| Q: I know this probably isn't your expertise but I'm connecting a pipe from a sink to an existing pipe ... A: Would you believe I asked a plumbing supply the same thing and they had never heard of doing that. I ... | |
| Intertherm Ac unit | 7/17/2008 |
| Q: I have a an older approx. 1970 ac unit. I have been told there is only only drain which goes to the ... A: It will take some work, but you need to dig a deep pit and fill it with rocks with a light cover of ... | |
| contol voltage | 7/2/2008 |
| Q: WHEN CHECKING LOW VOLTAGE HOW CAN YOU TELL WHERE THE VOLTAGE HAS STOPPED OR IF YOUR GETTING A ... A: The common side of the transformer is grounded to the cabinet. If you put one lead on the cabinet ... | |
| Economizers | 7/2/2008 |
| Q: What is Economizers? A: It is a factory fitting that attaches to a unit controlled by a humidistat that senses ambient ... | |
| Pressure washing outside compressor | 7/1/2008 |
| Q: Is it OK to pressure wash the outside compressor cooling fins? I would think the better airflow the ... A: Yes, this is a common way a good technician cleans the coils. Get a good coil cleaner and follow the ... | |
| Central HEating/ AC | 7/1/2008 |
| Q: My parents checked in on my house about two months ago and relayed to me that the Central AC system ... A: It may be that the unit was iced up preventing any air flow. Have the system switch turned off so it ... | |
| Troubleshooting A Rheem | 6/30/2008 |
| Q: I have a Rheem RAMB-048JAZ (mfg 02/00) , S/N 6267F070012409 It began to not cool properly last ... A: The broken wire could easily have damaged the capacitor. They are not expensive and worth the ... | |
| air in the system? | 6/30/2008 |
| Q: I've heard that air in the system (suction line I think) can be a problem. If this is true, would ... A: If there was any air at all in the system, it would dramatically affect the cooling. I am sure the ... | |
| rooftop vibration | 6/29/2008 |
| Q: Mr. Cook, I recently purchased a new condo in Orlando Fl. The unit is equiped with heat pump with ... A: Unfortunately with rooftop units this is a common problem. The isolators should be rubber bushings ... | |
| Humidistat Control and Air Conditioner | 6/29/2008 |
| Q: Recently we had 6 commercial rooftop Carrier air-heat units installed at our new restaurant. Besides ... A: By running a/c you automatically dehumidify, so running the humidistat down will run the a/c. The ... | |
| Replacing central air R22 or Puron | 6/28/2008 |
| Q: I live in a very hot and humid climate which necessitates Central AC. I trust my AC/heating service ... A: I just replaced both of my units and also went with R 22 units. I believe by the time these units ... | |
| size of a/c unit capacity | 6/27/2008 |
| Q: I am in a new home close to 2 years. Can't seem to drop temp below 78 degrees. I noticed that ... A: Your neighbors unit is a 5 ton, yours is a 4 ton if the numbers are correct. This is still not ... | |
| Central Air Blower Problem | 6/26/2008 |
| Q: J Cook, My central ac is blowing cool air into the house but does not have any force, I have to put ... A: If you are speaking of the fan that is visible from outside, this is the condenser fan that ... | |
| Concord 80 plus furnace 46555-001/b | 6/26/2008 |
| Q: My unit isn't working properly the thermostat is set to 70 and the outside air conditioner unit ... A: The unit in the attic is on a different circuit than the outdoor unit. Make sure there are no ... | |
| Propbe Furnace, home use | 6/25/2008 |
| Q: I want to find out about a furnace called "Temp Star". Do you know anything about this furnace, ... A: Most contractors consider it one of the " Low end " or contractor grade units. I know they are less ... | |
| crankcase heater | 6/25/2008 |
| Q: I am trying to get the air to start and read the directions. I need to start the Crankcase heater ... A: It is an automatically controlled heater either imbedded into the compressor or externally attached ... | |
| trane xl80 | 6/24/2008 |
| Q: My parents recently had a trane system and duct work done in thier home for both heating and air. ... A: I totally agree, any air that is escaping the unit is not going into the ducts and decreasing every ... | |
| Coils freeze when blower is off, and outside unit is running.. | 6/22/2008 |
| Q: Ok, I live in Marana, Az. Needless to say the need for AC is needed! My unit is almost 6 yrs old. ... A: I can give you several things to check. To test several components at once, remove the front part of ... | |
| Trane ac unit | 6/22/2008 |
| Q: Well we have inherited a brand new in the box---Trane 2 ton xl series (16i) ac unit---our cousins ... A: I can not locate a site that offers pricing. If you can call a local Trane contractor, tell them you ... | |
| Ducane ac unit | 6/21/2008 |
| Q: We have what we believe to be a Ducane air-conditioning unit(that is the name on the thing) in a ... A: I has got to have a filter, so if it is missing, by all means put one in. I do not know how long it ... | |
| shopping around | 6/20/2008 |
| Q: This is my first experience buying a new AC unit. I have received 2 estimates and will get a third ... A: Sorry for the delay. This will be a long response and I had it together yesterday and my computer ... | |
| Hot in south Texas | 6/20/2008 |
| Q: I appreciate any suggestions you may have. This is a Ruud Silhouette 2- UGPH-07EAUER, 75K btu. ... A: There are low voltage fuses in the control circuit. Remove the access panel with the power off. ... | |
| hvac terms and settings | 6/19/2008 |
| Q: my office has 50on rooftom uint by Trane voyager with SENS-IN-2C thermostat. to save the energy, i ... A: I am not sure when the unit is running at night, but it will cycle to maintain whatever unoccupied ... | |
| International Air (reg.trademark of the company) | 6/18/2008 |
| Q: I was wondering if you know of or have heard of this company. I have a small (we'll say small ... A: No Brandon I have not heard of them, but searching, put in the following: AED ... | |
| Inadequate Cooling After Evaporator Cleanout | 6/17/2008 |
| Q: After having a couple of technicans at the house who were generally unable to diagnose why my system ... A: It sure makes you wonder what the inspectors look at to give a final inspection approval on an ... | |
| heat pump | 6/17/2008 |
| Q: My heat pump was stolen and I'm getting conflicting info from the salesman regarding what needs to ... A: I am afraid he is correct about it all. I will start in order as per the statement. 1. As of ... | |
| portable air conditioners` | 6/16/2008 |
| Q: good morning! i have a new portable ac unit for our server room in the office. it pulls in air from ... A: It sounds like the thermostat is cycling the unit and it is set at 75 degrees. I am not sure if it ... | |
| blower problems | 6/15/2008 |
| Q: I was wondering how I go about removing the blower fan unit myself since my landlord will take ... A: Turn off power to the unit, it may require two breakers, one for the indoor and one for the outdoor. ... | |
| Reversing motor direction on fan blower | 6/15/2008 |
| Q: I purchased a Jennair cook top with downdraft model # JED8430BDS. This will replace an old Jennair ... A: Unless the motors are running the same direction as viewed from the motor side, this unit will blow ... | |
| Fan motor overheating? | 6/14/2008 |
| Q: I just recently replace the fan motor, motor blade, and capacitor. In the last couple of weeks, it ... A: Are you certain you have the correct capacitor? It sounds like the motor is trying to start, but ... | |
| My compressor is not turning on | 6/14/2008 |
| Q: I am having a hard time figuring out what's wrong with my compressor . The indoor unite is running ... A: If you are sure you had 24 volts to the contactor and it was not pulling in, it is still the ... | |
| motor running but no air | 6/13/2008 |
| Q: I just replaced a new motor in my Air handler unit for home AC. Everything looks fine, motor is ... A: It appears the installation is correct. Verify the filter and the indoor coils are not clogged ... | |
| Laars Mini-Therm II banging noise | 6/12/2008 |
| Q: My boiler makes popping and banging noises when the burner is running. I made sure it wasn't a ... A: I was certain it was air after the first sentence, but it was confirmed the further I read. There ... | |
| Compressors | 6/12/2008 |
| Q: Can i use a compressor from a 2 ton unit on a 1.5 ton unit that has a 2 ton coil in it? ANSWER: ... A: I am not sure how it is determined it has a 2 ton coil, but unless something from the manufacturer ... | |
| COLEMAN TSR MACH 3 COMPRESSOR | 6/11/2008 |
| Q: I just bought a used travel trailer equipped with the Coleman TSR Mach 3. We started using the a/c ... A: This is classic of the unit developing high pressures when the most heat load is on it. Try cleaning ... | |
| Compressors | 6/11/2008 |
| Q: Can i use a compressor from a 2 ton unit on a 1.5 ton unit that has a 2 ton coil in it? A: Every piece of equipment is specifically engineered with the correct components. This may work for a ... | |
| Electrical Problem (?) with Bryant AC Unit | 6/10/2008 |
| Q: On very warm days when my AC unit has to run for ~90 or more minutes in order to get/keep the house ... A: First I would take an amp reading while the unit is running to see how many amps it is pulling ... | |
| blower motor | 6/4/2008 |
| Q: my blower motor breaker keep tripping after it runs a while its a older unit just started happening A: The first thing I would try is replacing the motor capacitor. It looks like a small can, usually ... | |
| Noise from evaporation coil drain line | 6/3/2008 |
| Q: The evaporation coil drain line located in the attic is connected to the overflow drain line at the ... A: With it connected to the tub you are hearing it there. It should not be connected to the plumbing. ... | |
| ac installation | 5/29/2008 |
| Q: i had a new Trane furnace/ac installed. the installer seemed to do a professional job except that he ... A: I admit this is the extreme example of a perfect installation to allow nitrogen to trickle through ... | |
| water under air handler | 5/29/2008 |
| Q: This spring we had central air installed in our 1920's house. We now have a heat pump air handler ... A: It is indicating the drain is clogged. There should be 2 drains from this fan section. Both should ... | |
| home compressor hvac | 5/21/2008 |
| Q: my appx. 1996 model cools and cycles, but periodically will cut off and not come back on. the fan ... A: There is some safety cutting off the outdoor unit. It is on a different circuit than the inside fan ... | |
| Installing AThermostat | 5/20/2008 |
| Q: Which wire to connect to "RH" on the thermostat A: Jumper the red wire from R to RH. On some units there is an a/c control circuit and possibly a ... | |
| Hooking up thermostat | 5/20/2008 |
| Q: I have a Payne furnace Model #PF1M I amd trying to hook up a Luxpro Thermostat. I have 7 wires ... A: There are usually unused wires in the thermostat cable. I am not sure what type of thermostat you ... | |
| Lawnmower Sound From Heat Pump | 5/19/2008 |
| Q: Okay, I have had my installer out four times to evaluate this problem. I have a 4 ton American ... A: If the sound is positively in the indoor unit, the reversing valve is ruled out as it is in the ... | |
| a/c unit frozen | 5/18/2008 |
| Q: my new central a/ac is not going lower than 80 eventhough I set it at 75 and its run all night. I ... A: Several things can cause it. One is a dirty filter and or coil cutting down on the air flow. The ... | |
| Upstairs Apartment Hot Water Htr/Furnace | 5/18/2008 |
| Q: My elderly parents just started renting out their upstairs apartment of approximate 750 sqft again. ... A: As small as this area is, an on demand gas water heater, the type that only runs when there is a ... | |
| High Seer 5 ton replacement | 5/17/2008 |
| Q: live in south Florida one block off the ocean. According to our semi-annual maintenance tech, the ... A: In your area I do believe the warranty would have to play a major part in any decision. I would also ... | |
| coil replacement | 5/17/2008 |
| Q: I was recently told that one of the coils in one of my air handlers (in the attic) was leaking ... A: A new coil will have no more than a 1 year warranty, and some only have a 6 month, so I would ... | |
| refrigerant leak | 5/16/2008 |
| Q: I AM HAVING TROUBLE FINDING A LEAK IN A SPLIT SYSTEM A/C I HAVE USED A DTECK AND CANT FIND IT. COULD ... A: David, the only sure way to locate a leak is to recover the refrigerant and pressurize the system ... | |
| System has to be re-set regularly | 5/15/2008 |
| Q: We have a Rudd 3.0 heat pump installed in May 2006.From the very beginning, the system would have to ... A: You should never have to continue resetting the breaker. I would have an electrician check the ... | |
| Air Conditioning Unit & Pressure Switch | 5/14/2008 |
| Q: In December, my a/c unit wasn't getting cool so we had a guy come out and he declared that our ... A: This appears to be a low pressure switch and it may be the owner also did not get the leak totally ... | |
| pop-pop sound from rheem outside unit | 5/14/2008 |
| Q: We have are in TX and have a 3 year old rheem unit. House was new construction, but we are second ... A: I personally do not believe it is a line problem in any manner. I would stand beside of the outdoor ... | |
| Home heating/airconditioning | 5/12/2008 |
| Q: We own a one level house with zoned airconditioning. If both units are set at 72 degrees and the ... A: It will do no damage to set the unoccupied area to 80 degrees to save on energy. I have an upstairs ... | |
| Thermostat wiring | 5/11/2008 |
| Q: I am replacing a mercury switch t.stat with a new Hunter programmable unit. I have five wires, ... A: I do not see how any programmable can work without using the common wire. The R wire is one side of ... | |
| ruud furnace | 5/11/2008 |
| Q: furnace starts up burners fire normal fan runs but after 5-6 minutes burner cuts out before set temp ... A: I would do some research on this thermostat. I would have thought by the actions it was in the ... | |
| Self-install? | 5/10/2008 |
| Q: I'm a top automotive pro (A/C certified), and do most stuff around the home. Outside A/C unit just ... A: Jeff, 20 years ago you could not have given me a heat pump, I would take an oil burner any time, but ... | |
| Best source for new AC fan motor | 5/9/2008 |
| Q: My home AC unit has a fan motor that has quit, and I am wondering what a good source to replace it ... A: Most areas have an HVAC or refrigeration supply, or some locations have motor shops. Any of these ... | |
| propane | 5/9/2008 |
| Q: thinking of becoming hvac tech. as a hvac tech does that also qualify you to install and trouble ... A: As long as you have the appropriate training, yes. There are also license requirements that differ ... | |
| HVAC dosent blow either cold or hot air | 5/7/2008 |
| Q: a couple of days ago i notice the house too hot (i live in Utah some days are cold some days are hot ... A: Turn the system switch off and the fan to on to allow the fan to circulate air over the indoor coil ... | |
| VARIABLE SPEED AIRHANDLERS | 5/7/2008 |
| Q: J. Cook Are variable speed air-handlers worth the extra cost? How has their reliability been and the ... A: In my opinion, no they are not worth it. The upfront cost is most often more than double. A 13 seer ... | |
| Air Conditioner Fan Won't Shut Off | 5/6/2008 |
| Q: The air conditioner fan to my second floor unit won't cut off. The area cools and the thermostat ... A: It sounds like the control contactor points welded together and the contactor is stuck in. You can ... | |
| installing new systems | 5/5/2008 |
| Q: Mr. Cook, We live in So. Cal, so obviously our winters are mild, but summers can be blistering. We ... A: ADUE of 80% pertains to the efficiency of a fuel furnace regardless of the fuel type. In your area, ... | |
| leaking evaporator coil | 5/5/2008 |
| Q: My 15 year old gas pack is leaking freon. Last year I filled it twice as as we are rapidly ... A: Yes he is correct. As of Jan 1 2008, the minimum seer for new units is 13 seer and it would not ... | |
| A/C in new bonus room | 5/4/2008 |
| Q: I plan to build a bonus room (21'X21') above my garage, with 6' walls and ceiling sloping upward to ... A: You will not be able to add to the existing unit, it would rob too much from it to properly maintain ... | |
| replacing window unit with newer technology | 5/3/2008 |
| Q: I'm fixing up a small condo for my son whose in college. It has a small window unit and baseboard ... A: Most of these are called " Through the wall " units. Carrier makes a good one. It can either be ... | |
| A/C nightmare; need sledgehammer | 5/2/2008 |
| Q: We have a 1997 Ruud AC unit that has encountered numerous problems and subsequent "fixes"...I'll ... A: With the history of this unit and considering it is 11 years old, I would not spend any more on this ... | |
| Replacing central air | 5/1/2008 |
| Q: I am installing all 2 new compressors and new duct work in a 25-year-old house. The original double ... A: If the calculations were done correctly using the Manual J, I would go with the 2.5 ton compressors. ... | |
| heating &thermostat | 4/30/2008 |
| Q: a month ago my furnace stopped working. the ac worked fine so i thought i had 6 months to fix it. ... A: Every manufacturer has their own codes. I do not know the make or model of this unit. The owners ... | |
| carrier cycling issue | 4/29/2008 |
| Q: carrier 58SX series 170 CC propane furnace unit will ignite main burner but when blower starts up ... A: The most common part failure is the thermocouple. It is the small metal stem that the pilot burns ... | |
| Proper storage of R22 | 4/28/2008 |
| Q: I had a green tank of R22... purchased last year through a buddy. A tech was about to use it, to add ... A: It will not go bad in our lifetime, that is the concern with global warming as when it is released ... | |
| Air handler blown fuse | 4/28/2008 |
| Q: I found a blown 5 amp fuse in my airhandler (International Comfort ebp3000b2). This of course led ... A: It is most likely the coil to a relay or the compressor contactor. You can use an ohm meter and ... | |
| Looking to Install a new Central Air System | 4/27/2008 |
| Q: My wife and i just brought a house in New Jersey and we are looking to install central air. We had a ... A: I think I wished I lived close enough to do either for half that amount. Sears is not an HVAC ... | |
| HVAC Not Working | 4/25/2008 |
| Q: Our HVAC system is not working. At first I thought it was a dirty filter that was causing the ... A: The outdoor unit is on a different circuit from the blower that is running. Check for a tripped ... | |
| Replacing the AC unit | 4/24/2008 |
| Q: J Cook Our old AC system broke last year after almost 15 years of operation. We are getting ... A: I just replaced both of my units as I have an upstairs and downstairs unit with R 22 systems. ... | |
| AC | 4/24/2008 |
| Q: What should the air temperature be coming out of the ducts when the AC is on? A: There is no way to pin point the temperature as it is determined by the return air entering the ... | |
| hvac | 4/23/2008 |
| Q: the space is 23 by 39 what is the square feet A: You multiply 23 x 39 = 897 square feet, but for sizing an HVAC system, you must also know the ... | |
| refrigerator - freon (sp?) | 4/22/2008 |
| Q: I need to take out the freon so I can dispose of the refrigerator. Can I do it or do I need to call ... A: You will either have to call an air conditioning service company or refrigeration or appliance ... | |
| Furnace blower hard to get going | 4/21/2008 |
| Q: I recently bought a house with a gas pack furnace - which I know next to nothing about. Furnace ... A: With a gas furnace, in heat mode there is either a temperature control or a timer usually on a ... | |
| A/C Won't come on at all | 4/21/2008 |
| Q: My A/c won't come on at all. We've checked the fuse, but it was fine. What else could it be? A: I am not sure which one you checked, but the indoor unit is on a different circuit from the outdoor ... | |
| AC Contactor and coil | 4/20/2008 |
| Q: when I enable the cooling cycle on my thermostat the contactor closes allowing the compressor and ... A: The contactor is not directly controlled from the thermostat. The thermstat is feeding the contactor ... | |
| im confuseed | 4/20/2008 |
| Q: J so we just bought our first investment home and are fixing it up by ourselves and we ran into ... A: You will have to be careful not to cross the wrong two wires. Where the thermstat wiring is ... | |
| Electric HVAC | 4/17/2008 |
| Q: My daughter has an electric hvac and the unit outside does not turn on. The thermostat is working ... A: The thermostat is powered by the indoor unit, the outdoor unit has its own circuit. Check the ... | |
| ac not working | 4/15/2008 |
| Q: we turned our ac on this weekend and the outside unit does not tuen on. we have an electric split ... A: Not always. It is common for a fuse to get weak after the start up amps of any motor have drawn on ... | |
| wiring question - TH8110U1003 / EWC-ST-2D ULTRA-ZONE | 4/15/2008 |
| Q: I just moved into a house built in 1999. It has an EWC-ST-2D ULTRA-ZONE control system in the ... A: It appears someone designed their own wiring method. With one of the transformer wires connected to ... | |
| ac not working | 4/14/2008 |
| Q: we turned our ac on this weekend and the outside unit does not tuen on. we have an electric split ... A: The outdoor unit is on a different circuit from the indoor unit. Make sure there are no breakers ... | |
| like new furnace and a/c | 4/12/2008 |
| Q: we just built our home 2 yrs ago 2006 and now the central air unit does not come on when we turn up ... A: The first thing to check is if the indoor and outdoor units are getting power. They will be on ... | |
| wiring question - TH8110U1003 / EWC-ST-2D ULTRA-ZONE | 4/12/2008 |
| Q: I just moved into a house built in 1999. It has an EWC-ST-2D ULTRA-ZONE control system in the ... A: John, what you will need to do is go to the indoor fan section. Turn off power to it and open the ... | |
| Heat not hot/AC not cold | 4/11/2008 |
| Q: Our air handler is working. It blows air when it cuts on. The outside unit makes a buzzing sound ... A: The buzzing is very likely the outdoor motor trying to start. The first thing I would do is replace ... | |
| janitrol heat pump | 4/10/2008 |
| Q: 3 ton heat pump about 15 years old. thermostat produces no heat or a/c, will not run fan in fan "on" ... A: When you received the shock, it may have blown the control transformer. It is indicating you have ... | |
| a/c banging noise | 4/9/2008 |
| Q: I bought a new house almost 2 years ago. My upstairs unit is a 3 ton Ruud split unit. We've had ... A: I am sorry, but I can not imagine anything in the refrigeration lines that could possible cause ... | |
| A/C fan not working | 4/8/2008 |
| Q: Heat and blower works fine. When I turn the A/C on the compressor kicks on but the blower doesn't. ... A: In heat mode the blower is activated by a total different relay that delays the fan so the heat ... | |
| I screwed up and am looking for help | 4/8/2008 |
| Q: Cook. The synopsis of my quandary is; 30 year old house near Raleigh, NC. One level with 1570 Sq ... A: I think a bypass damper would add to the problem and create more icing. The best solution ... | |
| comfortmaker outdoor unit wiring | 4/6/2008 |
| Q: My dog has chewed and pulled the wires out from my conmfortmaker outdoor a/c unit #ac5024a2c1. I ... A: Go to the indoor fan section, remove the access panel and locate the thermostat terminal strip. It ... | |
| New Heating A/C Unit - Air smells like must | 4/5/2008 |
| Q: American Standard a/c & heating unit & new supply/return ducts were installed last Nov. When they ... A: The odor usually is from debris that has collected on the indoor coil. When this coil gets wet from ... | |
| Heating a basement recreation room | 4/5/2008 |
| Q: We have a 2-story 4-bed house with furnace and central air. our finished recroom basement will are ... A: This is one possibility, but in the real world this unit has to be at least a 3+ ton unit. If you ... | |
| Water Cooled System, Debris Issues | 4/4/2008 |
| Q: I live in a condo building, and my HVAC unit is connected to the closed water loop that runs through ... A: The regulator has to be set at a specific flow rate depending on the size of the coil and the fan or ... | |
| Heat Pump killing me | 4/4/2008 |
| Q: My story is long. It started when my Heat pump stopped working all of a sudden. The fan doesn't work ... A: You are loosing the control circuit somewhere. From the transformer, locate the terminal board the ... | |
| Oil Furnace Shutdown | 4/3/2008 |
| Q: Mr. Cook Are there any issues with turning off an oil boiler furnace for a month or so relative to ... A: There should be no problems. We shut our boilers down all summer. The only thing we do before ... | |
| Too Hot | 4/3/2008 |
| Q: I have a Weil-McLain Gold -oil heater no. WT-14 boiler. It seams that when it heats domestic hot ... A: I am not sure how you have determined the stat is working properly, but something is energizing the ... | |
| Carrier Weathermaker 58SX HVAC | 4/2/2008 |
| Q: I own a 1991 Carrier WeatherMaker 58SXA060-GG. It lights up with no problem with a good healthy ... A: The most likely failure is the thermocouple. This is the device that is a small metal stem the flame ... | |
| low pressure | 4/1/2008 |
| Q: when i put my gages on my low side in the heat setting my pressure runs around 40psi and go's right ... A: In heat mode, you are in effect air conditioning the outdoors. This is why the outdoor coil will ice ... | |
| Lennox system | 3/31/2008 |
| Q: We replaced our fan motor last October (2007). The tech used the same motor bracing bracket and now ... A: Hopefully the motor bearings are not affected, and most likely are not, but the blower wheel itself ... | |
| heat pump system | 3/26/2008 |
| Q: please help i can not seem to find the model number to a heat pump system i have baught from retal ... A: There should be a metal or foil label on the unit, usually on the panel that is removable to access ... | |
| Compressor oil | 3/26/2008 |
| Q: My name is Roman, an HVAC technician here in KSA. Based in your experience, how long should the ... A: This is a matter of personal preference. In my opinion, every time the system is opened for any ... | |
| leaking and hardwood flooring | 3/25/2008 |
| Q: I want to put hardwood floors in my basement in florida. My house is on a hill and moisture is not ... A: I would not recommend any type of bleach as it will eventually eat the drain pan and also the coils ... | |
| Hydrotherm 125k BTU gas valve | 3/20/2008 |
| Q: I have a millivolt system. Pilot stays on about 10-12 hrs then goes off. Replaced the voltage ... A: Mike, I did not want you waiting long for a reply, but I am not familiar with this particular system ... | |
| York Drain Pan | 3/20/2008 |
| Q: I have a York and i believe the drain pan is all rusted and leaking. Where can I find a new drain ... A: Most drain pans can be pulled out from under the coil without damaging the coil. You will just have ... | |
| HVAC: Air Handler | 3/19/2008 |
| Q: Having problem with air handler. I know its working when the digital thermostat is set to heat, but ... A: It could be either or the wire going to the air handler from the thermostat. There is a separate ... | |
| Squeaky zone controller | 3/18/2008 |
| Q: I hope you can help. On my furnace, one of the zone dampers squeals really loudly when it ... A: It may be some debris has built up on the damper. Can you remove it and verify there is no debris ... | |
| HVAC Compressor replacement | 3/15/2008 |
| Q: Our 5 ton Bryant R-22 HVAC compressor needs to be replaced.(it was installed in 2002.)Coils are ... A: R 22 never needs to be replaced. It lasts forever, that is why it is being replaced with more ozone ... | |
| 8yo Bryant Heat Pump | 3/11/2008 |
| Q: I have a 8yo Bryant heat pump and the heat did not come on at all last night. I tried the emergency ... A: Have you verfied at the outdoor disconnect there is power at the outdoor unit? If so, go to the ... | |
| Tryin to locate a Reset buton on a Trane XV90 | 3/8/2008 |
| Q: We had a high limit trip due to very dirty filters. How can we locate the reset button now to get ... A: Most are not resettable for high limits. You will have to trace wiring inside of the exchanger ... | |
| Heat Pump | 3/7/2008 |
| Q: I have a Rheem Heat Pump that makes a constant humming sound when it's not running is this normal, ... A: It sometimes depends on how the reversing valve seats. It is a low voltage coil on the valve that is ... | |
| New HVAC/Duct work | 3/6/2008 |
| Q: ..as part of the redo we are thinking now would be a good time to go from one zone to two zones of ... A: I agree with the age of the equipment, now is the time to do something, just consider all options ... | |
| Lennox Furnace | 3/4/2008 |
| Q: We have a 1991 lennox gas furnace that will fire up and down as long as the tstat is set on "fan" ... A: There is either a temperature control device or a circuit board timer that brings on the fan in heat ... | |
| GE Spacesaver combo - can it be fixed? | 3/3/2008 |
| Q: Cook: I have a GE WSM2480TAZWW Spacemaker washer/dryer. The washer tub is off center, like a ... A: Any make of appliances are so well built that by the time a major part fails, it is an obsolete unit ... | |
| Heat pump operation | 3/3/2008 |
| Q: My condensing fan does not start sometimes when the heat pump comes on. What could be causing this ? ... A: If the unit starts during a defrost period the fan will not be on. It should always immediately ... | |
| Luxaire forced air furnance | 3/2/2008 |
| Q: I have a luxaire forced air furnace its 5 years old and it doesnt blow as hot as it should, and as ... A: It may be the fan control needs to be adjusted to allow the exchanger to get hotter. If it has not ... | |
| Hot water baseboard furnace not working | 3/1/2008 |
| Q: ..we have a Laars-teledyne mini therm for hot water baseboard heat. Four days ago we had a repairman ... A: The most simple pump test is to feel the line outgoing from the pump to see if it is hot. However, ... | |
| wiring in a booster fan | 2/29/2008 |
| Q: am adding a booster fan in one duct to increase air flow to hard to heat and cool area of house. how ... A: In either mode it should be making the G terminal in the fan section as this is the fan circuit. Use ... | |
| Heat Pump Maintenance | 2/28/2008 |
| Q: I have a 3 ton Rudd heat pump which is working very well and is about 5 years old.How often should I ... A: The main thing on a heat pump is checking the wiring as the strip heat can damage the connection ... | |
| furnace seems to run alot | 2/28/2008 |
| Q: I live in IL. last fall I had a 80% two-stage furnace (American Standard)installed as well as a new ... A: The unit is operating totally by the thermostat calling for heat. Apparently it does cool down ... | |
| Sears/Kenmore Wall Furnace | 2/27/2008 |
| Q: I have a sears model 600 (face plate number, but internal spec plate lists 867.736349 model number) ... A: I am certain on this age of a unit the fan is controlled by a temperature device. It may be a sign ... | |
| 5 Wire Vs. 4 Wire | 2/25/2008 |
| Q: I have a thermostat that is a 4 wire and the one I'm looking to replace it with is a 5 wire. As I ... A: All mechanical thermostats do not require both sides of 24 volts. The thermostat is just a switch. ... | |
| Residential: gas pack vs. dual fuel | 2/25/2008 |
| Q: We need to replace our gas pack due to a cracked heat exchanger (use propane, natural gas not ... A: Heat pumps have come a long way, but in temperatures that are in the teens very often, the heat pump ... | |
| Ext. Fan Inop | 2/24/2008 |
| Q: I have a Trane TWR036C100A1 (8 years old) and while outside one day I noticed the compressor sounded ... A: This is very common with a replacement motor. The original motor most likely only has one wire from ... | |
| miller furnace | 2/24/2008 |
| Q: This is my mom's furnace. It is an '89 in a doublewide trailer. If properly working, I see it ... A: One of the three limit switches is tripping. The fan times out by a circuit board and will ... | |
| unit size | 2/23/2008 |
| Q: I have a floor space of 2500 square feet. What size rheem a/c & heating unit would I need? A: This is the most common error in sizing a unit. The footage is only one very small component in ... | |
| Maytag heat pumps | 2/21/2008 |
| Q: I am shopping around to replace my existing 15 year old lennox heat pump system. Most of the ... A: I have never encountered a Maytag unit so I do not want to give you unbiased opinions without ... | |
| Ext. Fan Inop | 2/20/2008 |
| Q: I have a Trane TWR036C100A1 (8 years old) and while outside one day I noticed the compressor sounded ... A: This appears classic of a failed capacitor. The fan as you state will attempt to run, but will only ... | |
| Thermal Zone, Heat Pump | 2/20/2008 |
| Q: I have a Thermal Zone Heat Pump, I have a problem the circulating fan will not stop running. It ... A: If you are speaking of the blower fan that supplies the air through the vents, the defrost control ... | |
| Trane xv90 Furnace will not operate under generator power | 2/19/2008 |
| Q: My father-in-law has a Trane XV90 furnace (1 year old) that will not operate when a generator is ... A: Mark I am somewhat at a loss also. Keep in mind however the formula to determine the proper size ... | |
| older thermostats | 2/18/2008 |
| Q: i am trying to install an older thermostat in order to keep with the antique look of my front room. ... A: The typical " Round " Honeywell can either be used alone, and as you state, has a low end of around ... | |
| Thermestat problems | 2/16/2008 |
| Q: I have an older home without Central air. The furnace was updated about 10 years ago to a high ... A: There is a safety control that is tripping. When you turn the stat down until the heat symbol cuts ... | |
| Rheem Criterion | 2/15/2008 |
| Q: "First off my model is (RGDG 07EAUER) serial cy5d302 f2494 9495. The problem I'm having is that I ... A: Randy, there are so many makes and models and the changes are so frequent, I do not keep any ... | |
| Blower wont shut off in auto mode. | 2/14/2008 |
| Q: I switched to a programble Honeywell visionpro 8000 on a Lennox GCS16-1353-270-5G RTU in Minnesota ... A: Verify what color wire is connected to the G terminal in the unit, this is the fan terminal and ... | |
| help pleas | 2/14/2008 |
| Q: what is the purpose of insulation on the suction line? A: The insulated line is the compressor suction or return line and in cooling mode will be so cold it ... | |
| Size question? | 2/13/2008 |
| Q: I have a 75 x 150 x 21 insulated building with 6 insulated 14 x 14 roll-up doors and insulated low-e ... A: Kelly it is much more involved. The way a unit is sized, a load calculation is done and actually by ... | |
| Trane XL 1200 package gas electric | 2/13/2008 |
| Q: 12 seer convertible 2-21/2 ton unit, for the past two winters when I turn my heat on it will not ... A: Larry, sorry but if you are getting any kind of an odor there is a very likely chance the heat ... | |
| furnace not working | 2/12/2008 |
| Q: Every winter our furnace does this. It stops working. We just changed the filter and batteries. We ... A: I do not know what manufacturer this unit is, the codes are determined by each manufacturer. If you ... | |
| A/C & HEATING FOR LOFT | 2/12/2008 |
| Q: I AM ADDING A LOFT TO AN OLD HOME WITH 12 CEILINGS. THE DIMENSIONS OF THE LOFT WILL BE 34 X 14 X 9. ... A: I am glad you asked because most homeowners make this same mistake that the room size should ... | |
| thermostat/furnace | 2/11/2008 |
| Q: The furnace in my home will run for about 4 - 5 hours and then cut off on its own. To get heat again ... A: Mercury never goes bad, it will be mercury forever. The furnace has safety controls that when ... | |
| furnace won't kick on | 2/10/2008 |
| Q: We have a trane central heating and air unit. The heat will not kick back on after the thermostat ... A: There are safety devices that will trip when you have a cracked exchanger. When they trip, cutting ... | |
| Aquarium Chiller | 2/9/2008 |
| Q: I have an aquarium chiller which is like a small fridge. when ever it kicks the compressor on it ... A: One of these is usually a thermal disc to cut power to the compressor in the event of mechanical ... | |
| Air Flow Redirect | 2/7/2008 |
| Q: We recently bought a great 1955 split level ranch. One of the character flaws of the house is the ... A: I have seen the item you refer to, but I have never used them. I would think the most likely source ... | |
| drain pipe from pan | 2/7/2008 |
| Q: It has led to anotherRegarding the drain pipe that runs from the drain pan (pan under coils): If the ... A: It really depends on the configuration of the drain run. My attic unit is supported at waist high ... | |
| No Ignition | 2/6/2008 |
| Q: I have the owner of a DC90 NUGM075EGB1 Serial L9620 furnace. When the unit calls for heat the ... A: More so than the gas valve, it appears to be an ignition problem. The ignition module is the part ... | |
| heat pump not coming on | 2/5/2008 |
| Q: My daughters house is apx 18 months old. There is a typical Washington state heat pump for heat and ... A: Make sure the disconnect feeding the outdoor unit has 240 volts on the unit side of the disconnect. ... | |
| Electric furnace Blows Fuse. | 2/3/2008 |
| Q: I have split unit. With the Air handler / Furnace in the Attic. There are three Fuses /service ... A: It would be very unusual for a motor to pull enough amps to cause the melt down. I believe the ... | |
| cracked drain pan | 2/1/2008 |
| Q: I have a Carrier Model # FX4ANF048 that was installed in late 2001. The drain pan under coils ... A: The refrigerant would have nothing to do with it as it is contained within the sealed coils and ... | |
| Baseboard hot water heating issue | 2/1/2008 |
| Q: My house is three years old, have a cont. loop hot water baseboard system with programmable ... A: Most programmables have the capability of adding sensors so the temperature is averaged between the ... | |
| Heat Exchanger Failure | 1/31/2008 |
| Q: Hey, I have not investigated this yet, but a client said their heat exchanger on their air ... A: Without seeing the damage, it is hard to determine, but certainly a guard hitting the unit could ... | |
| Rheem RHQA-101BFV aux light | 1/31/2008 |
| Q: I recently purchased a home with this heating unit. air conditioning seems to work fine. now that ... A: Everything you mentioned makes perfect sense. You have a heat pump. The outdoor unit is the first ... | |
| HONEYWELL CHRONOTHERM III | 1/30/2008 |
| Q: My aunt who lives in southern california is having issues with her heating/cooling system ... A: I am in North Carolina, so I do not have any direct contacts. I would search for a local contractor, ... | |
| Electric heaters-240v vs 120v | 1/30/2008 |
| Q: I have a Berko HHB504D, an electric baseboard heater, but has not installed. It says 240AC, 500W and ... A: The wattage of the unit determines the cost of operating the unit. Actually electric heaters are ... | |
| old ge weathertron | 1/29/2008 |
| Q: The house we bought this summer and an old ge heatpump. It's been heating fine until the outside ... A: GE was purchased by Trane and Trane was purchased by American Standard, so if you can locate a ... | |
| air-cooled chiller | 1/29/2008 |
| Q: I have recently been studying chillers due to the fact that a retail/office building just installed ... A: I do not know of any criteria for distance. You could get the model and serial number of the unit, ... | |
| Miss Wired Compressor | 1/28/2008 |
| Q: I had a A/C Compressor Single Ph. that was wired wrong from the factory. We ran it for about 30 min. ... A: Improper wiring can cause it to short out and lock up. I am not sure how it was incorrectly factory ... | |
| Howling noise w/ 2 zone hot water radiator setup | 1/28/2008 |
| Q: My home, which has hot water radiators, is divided into two zones. The boiler is a Teledyne Lars ... A: Many plumbers are also boiler mechanics. Actually the licensing board is still the Board of Plumbing ... | |
| Oil heat not lighting | 1/27/2008 |
| Q: I came home last night and the heat was set on 75....ouch...way too hot, so I turned off the heat. ... A: The oil level will be the first thing to check. Pushing the reset button is allowing oil to build up ... | |
| carrier gas furnace blower | 1/25/2008 |
| Q: On a call for heat the funace finishes its pre purge and then proceeds through its sequence of ... A: If any of the winding sets were shorted, the motor would not operate at any speed. On most units, ... | |
| Puddle under furnace | 1/23/2008 |
| Q: Today, for the second time (the other was a couple of months ago) we found a puddle of water under ... A: It has to be from the humidifier, either the pan in it has developed a leak, or the duct is sweating ... | |
| Heat Strips not kicking on | 1/22/2008 |
| Q: I installed a Goodman Package Heat Pump. The heat strips are not coming on when needed, what needs ... A: Put the thermostat in emergency heat and see if you are feeding 240 volts to the heat strips. If ... | |
| boiler | 1/21/2008 |
| Q: I HAVE A UTICA BOILER 113900 BTU WITH A HONEYWELL CONTROLLER AND A BECKET BURNER. IT HAS BEEN ... A: Actually 5 - 10 seconds is a normal firing rate. The controller has to make sure the pump is ... | |
| Payne Heater | 1/20/2008 |
| Q: When I turn on the heat, it does not stay on. I turn the thermostat to 80. It's turned to AUTO & ... A: Sorry for the delay, I have been out of town. Usually the ignition module has failed. It will light ... | |
| water in the middle of the basement | 1/19/2008 |
| Q: We have discovered water in the middle of our basement, in the area of our furnace/humidifier. It's ... A: Sorry for the delay, I have been out of town. I would have to say it is from the humidifier. There ... | |
| Rheem Criterion II gas furnace | 1/19/2008 |
| Q: all i want to do is clean or change the filter. my landlords are in florida and they never told me ... A: Sorry it took so long, I have been out of town. There should be a filter access that does not ... | |
| Bard Furnace | 1/18/2008 |
| Q: My furnace will shut down once every 3 or 4 days. It will come back on when I turn the on of switch ... A: A technician will have to diagnose the trip failure. Go ahead and have a technician on standby and ... | |
| Adjusting the pilot. | 1/18/2008 |
| Q: Heat system : Weil Mclean gold oil, oil boiler i just got my boiler installed a week a ago.My friend ... A: There are many variables that will cause the pilot to burn different colors. Even dust will make the ... | |
| Central Heater | 1/17/2008 |
| Q: I don't have a clue about this stuff....so hopefully you can help. When I got home this evening it ... A: It sounds like the blower motor may have failed. When you turn on emergency heat, the red light ... | |
| Heat pump condenser icing over | 1/16/2008 |
| Q: Recently my heat pump condenser unit has been icing over in cold temperatures. This has happened a ... A: It appears the defrost control has failed. It is typically a simple repair as most defrost controls ... | |
| Lennox Elite Series | 1/16/2008 |
| Q: My Lennox runs in short cycles & will not maintain a temperature. The furnace also will reignite ... A: Every model is different, you will have to check the wiring diagram on the indoor unit panel. There ... | |
| A/C UNIT | 1/14/2008 |
| Q: I HAVE BEEN HEARING A NOISE COMING FROM MY UNIT OUTSIDE THAT HAS BEEN DISTURBING ME. IT SOUNDS LIKE ... A: You could have a heat pump with gas heat as the auxillary heat, so having a gas line does not really ... | |
| Dead refrigerator | 1/13/2008 |
| Q: I opened my freezer this morning and all sorts of liquid splashed out. The food on the top shelf of ... A: The total refrigeration of a residential refrigerator is in the freezer section. There is just a ... | |
| single phase motor with 4 leg capacitor | 1/13/2008 |
| Q: sir we have a single phase motor used to operate butterfly valve now the problem is it is provided ... A: These are engineering specs that apply to the windings of specific type motors. It appears this ... | |
| change air handler to brand different from a/c compressor | 1/12/2008 |
| Q: i have a rheem split system that's 7 years old. the compressor unit is a scroll type--fantastic. ... A: It is against mechanical code to mismatch equipment as the fan section is engineered for the outdoor ... | |
| AC system | 1/11/2008 |
| Q: Just had my winter check done on the heater unit and had to change an ignitor but he said he also ... A: Depending on the zoning controls used, it may be more costly to zone than using two systems. I have ... | |
| HVAC is sometimes blowing Cold Air | 1/10/2008 |
| Q: I have a Central Head and Air Unit. Last year I was told to replace the gas valve and that solved ... A: There is some safety control tripping in the furnace. When you turn the stat off and back on, it ... | |
| water in pressure switch line | 1/9/2008 |
| Q: I have a 5yr old comfortmaker furnace. My furnace stopped working and after problem solving, I ... A: If this is a condensing furnace, it does not appear to be draining properly at the vent. If this is ... | |
| heat pump fan blade | 1/9/2008 |
| Q: My heat pump seems to be working(the furnace hardly runs when outside temp is above 30 and indoor ... A: The only device that would prevent the fan from operating in heat mode is the defrost control, but ... | |
| weatherking | 1/8/2008 |
| Q: I am working with a 25-year old Weatherking furnace. I need part information and hopefully a ... A: The fan on a unit of this age is most likely controlled by a temperature sensitive device. They are ... | |
| Cold Air from furnace | 1/8/2008 |
| Q: I have a Ruud achiever 90 plus furnace. When it kicks on to heat, it will blow cold air for about 10 ... A: The fan should not energize until the heat exchanger is hot. Watch the furnace and see if the ... | |
| Bryant AHU with strip heat problems | 12/15/2007 |
| Q: A friend of mine in Dallas is having problems with his Bryant AHU. It has electric strip heaters. ... A: He jumpered the wrong connection on the limit switch. Instead of jumpering the line voltage, he ... | |
| Lennox A/C Heater Unit problem | 12/14/2007 |
| Q: I have 2 units for the 2 levels of my home. The upstairs unit is having a problem heating. I have a ... A: The fan is on a circuit board timer and energizes after a period of time in the heat mode to give ... | |
| AC | 12/13/2007 |
| Q: We started having problems with our a/c and was told a bad suction valve and caused a large leak ... A: There are two types of leaks on an a/c unit. The first you had was a refrigeration leak and I agree ... | |
| Attic air handler | 12/12/2007 |
| Q: I NEED TO REPLACE MY SYSTEM IN THE ATTIC, DO I NEED A SPECIAL AIR HANDLER FOR MY HEAT PUMP SYSTEM? I ... A: Vitually every heat pump fan section is designed for vertical or horizontal installation, the drain ... | |
| whirlpool accubake oven RBS305PDQ16 | 12/11/2007 |
| Q: six months ago i replaced the sensor part #4455636 getting an error code F3, door locked up, temp. ... A: I agree there is most likely another culprit causing this sensor to fail, but the labor involved to ... | |
| my gas furnace won't ignite | 12/11/2007 |
| Q: I have a Heil DC90 High Efficiency furnace. I think I had it put in in 1997. My problem is that when ... A: You are correct that the inducer motor must begin exhausting air before the burners will ignite. It ... | |
| Amp draw on central air unit | 12/10/2007 |
| Q: I am trying to figure out the average amp draw on an AC. It is now winter and my heat is gas. I ... A: Since the main cost for the heat is gas, the power usage for the heat will be less than using these ... | |
| sound of water rushing in pipes | 12/9/2007 |
| Q: I have a four zone gas fired hotwater baseboard system.When a zone comes online I can hear a lot of ... A: It appears there is air in the system. You need to go to the highest point and bleed the air. This ... | |
| noises in gas fired boiler | 12/8/2007 |
| Q: This year it seems I am hearing a lot of boilng/cooking noises coming from our home heating boiler ... A: I agree it appears to be air in the system. You need to bleed it at the highest point where there ... | |
| Air handler in unheated attic | 12/8/2007 |
| Q: My 2nd floor of my hour is heated and cooled by a Carrier Heat Pump. The indoor air handler is ... A: I did the same thing with my unit. The best insulation is called duct wrap. It is in a roll and can ... | |
| Thermostat | 12/7/2007 |
| Q: I have the old time mercury stats. I went to change them and found out about "common" wires.#$%? ... A: You can use any color as long as the same wire is connected on both ends. In the indoor unit, look ... | |
| Central Heating Unit | 12/6/2007 |
| Q: No heat. When I turn on heat on unit it won't blow hot air. I hear a humming sound coming from unit ... A: When you turn the thermostat off or to cool, it is resetting the safety circuit for heat. There is ... | |
| breaker | 12/5/2007 |
| Q: i built house in 2001. never really investigated this matter but i had the problem since then and ... A: He is exactly correct. The formula to determine the amp draw if watts divided by volts = amps. A 15 ... | |
| Rheem 80 Imperial Furnace | 12/4/2007 |
| Q: Igniter comes on valve turns on and burners come on for about 20 seconds and turns off. Will do this ... A: It sounds like a classic bad thermocouple. After the pilot lights, it burns against the thermocouple ... | |
| Trinity boiler w/DHW | 12/3/2007 |
| Q: Has been working well for past 4 years, now has the problem of main circ pump will not shut down. ... A: It is a control problem as the pumps both work and only energize by means of some control. You can ... | |
| Air Condition Compress will not start | 12/1/2007 |
| Q: 1. We noticed while the unit was running the lights would dim. Before we could investigate this. ... A: Make sure the connections on the breaker are tight. The smoke could be because the compressor is ... | |
| HOT WATER BOILER | 12/1/2007 |
| Q: I CAN NOT GET THE BOILER PRESSURE PAST 10 PSI. 12-16 I THINK IS RIGHT PSI. ALSO THE NEEDLE VALVE ... A: If a cap will not stop the valve from leaking, you may have to drain the system down enough to ... | |
| Lennox G61MPV 36-045 - Gas Furnace | 11/29/2007 |
| Q: Apparently my old gas furnace is toast. I have got a couple of quotes. The one that looked bmost ... A: Depending on your location and the amount of work a contractor has waiting, prices can vary greatly. ... | |
| unequal heat in doublewide | 11/29/2007 |
| Q: My son has a 3 bedroom 2 bath doublewide, that was set up one year ago. It has an EB20B coleman ... A: If the ductwork was installed properly, there is a Tee fitting below the furnace that splits the ... | |
| I'm cold! | 11/28/2007 |
| Q: I don't know what is wrong with my heater, but it is driving me crazy. I wake up every night and it ... A: There is some safety tripping during the night. By turning it off and back on, it is resetting the ... | |
| system question | 11/28/2007 |
| Q: I paid for a Ruud multi HVAC system and the one put in said weatherking. It has the same serial ... A: The name of a series will stay the same, only by contacting the manufacturer with the model and ... | |
| oil furnace (oil burner) | 11/19/2007 |
| Q: I have been working in the hvac field for about 1 yr now so I'm kinda new at this yet. So here is my ... A: This was the only way I could respond back, but I appreciate the comments. It is amazing sometimes ... | |
| goodman gas pack problem | 11/18/2007 |
| Q: I AM HAVING TROUBLE WITH A GOODMAN MODEL PGO-60150-1AB-REV E GAS PACK. AT FIRST IT WOULD NOT ... A: First I would call the service manager of the company that has replaced all of these parts. This man ... | |
| Heat pump | 11/18/2007 |
| Q: Mr. Cook, I am having a problem with my heat pump. Last night I turned it of at the thermostat on ... A: It will not be the breaker. A way to determine if it is the thermostat is with the breaker off, pull ... | |
| Bleeding air from hot water radiators | 11/17/2007 |
| Q: I have one radiator in our house that seems to always be cooler on one end than the other. I know ... A: It bleeds easier if it is hot. Being the farthest away, it will trap most of the air. If you can ... | |
| Air flow | 11/16/2007 |
| Q: There is no air flow out of the registers along one whole side of the house. The unit was replaced ... A: You will need to check the entire ductwork line. It may be that either the duct has separated at a ... | |
| oil furnace (oil burner) | 11/15/2007 |
| Q: I have been working in the hvac field for about 1 yr now so I'm kinda new at this yet. So here is my ... A: There are several other things that can be causing this before replacing the control. First there is ... | |
| blower motor will not shut off unless manualy | 11/14/2007 |
| Q: i have a kenmore 70 power miser furnace model # 867-767020. It was working fine until the the ac ... A: There is a separate wire that sends the signal to the outdoor a/c unit from the wire that sends the ... | |
| 12 seer Payne Unit | 11/14/2007 |
| Q: I have a 12 seer payne unit and for some reason it will not cut off. We have the thermos stat set at ... A: First, make sure the thermostat is turned off and go outside to the disconnect that feeds the unit, ... | |
| Trane XL1200 and VisonPro Thermostat | 11/13/2007 |
| Q: J Cook, I have a 3500 sq. foot home in PA heated and cooled exclusively by a 5 ton Trane XL1200 ... A: The XL1200 series is a 12 seer rating and all new units are required to be at least 13 seer or above ... | |
| black residue | 11/13/2007 |
| Q: We have electric radiant heat - in our ceilings. the house was built in the 60's. my mom owned the ... A: There may be two factors here. One, with the soffett now allowing air flow, the ceilings are not ... | |
| HVAC Retuns | 11/12/2007 |
| Q: Each room in that house has two air returns in a wall, One low with a damper and one hi without a ... A: Not knowing how this was designed, you may cause an air restriction by closing any return vents. I ... | |
| Heat Sensitive Tubing | 11/12/2007 |
| Q: My gas furnace is a Kenmore Power Miser 80, when the furnace is on it always create a noise of ... A: It should only ignite and continue burning once per heat cycle. The fan cycles on a heat control, so ... | |
| furnace stoped working | 11/11/2007 |
| Q: i am having issues with my BARD forced hot air oil furnace and wondering if you could help please. i ... A: An oil furnace needs to be serviced every 2 years. There is so much residue that builds up they need ... | |
| fiireplace will not start | 11/10/2007 |
| Q: we have a 4 yr. old gas fireplace and a few months ago the fireplace started to just shut off. I ... A: James, there are so many safety devices on a gas appliance it is difficult to say where to start. I ... | |
| New Prog. T-Stat Will Not Shut Down Furnace | 11/9/2007 |
| Q: I recently (late summer) installed a new digital thermostat in my house. We have an air conditioner ... A: There should only be two wires required to energize the heat as the fan will cycle on an internal ... | |
| Honeywell RTH6300B | 11/9/2007 |
| Q: I bought this programmable thermostat a few weeks ago to replace the typical "builders special" ... A: I have found the same thing, that there seems to be no calibration to these thermostats. I can say ... | |
| Intertherm ac | 11/8/2007 |
| Q: They live in a single family 3 bedroom 2 bath home. They recently had their outside unit replaced by ... A: I know these units were designed for manufactured homes, but I see no problem in installing them in ... | |
| Gas Pac will light once then cut off and with 2 more attempts it does not relight | 11/7/2007 |
| Q: my girlfriend has an out side gas pack about 10 years old. I am trying to help her fix it. What is ... A: The most likely culprit is the thermocouple. If you look at the gas valve, there will be a tube ... | |
| heat pump defrost controls | 11/6/2007 |
| Q: i have a 7.5ton american standard heat pump when i turn the thermostat to heat the indoor unit ... A: It could depending on how it is installed into the control circuit. Since it appears on rise it ... | |
| hydronic forced hot air | 11/5/2007 |
| Q: I have an hydronic forced hot air system. When in the heat mode the fan will not come on when there ... A: There is some type of device either on time or temperature that energizes the fan in heat mode. ... | |
| Rheem | 11/4/2007 |
| Q: I have an older Rheem gas furnace, It runs great, but it is acting up right now. This year after ... A: You would have to contact a Rheem dealer to see the age of the unit. The main things to clean are ... | |
| lighting a pilot light | 11/4/2007 |
| Q: I just bought a house, and have a GE furnace BLU080E942B1 that I cannot figure out how to light. Can ... A: You have to be very careful as most newer units are auto ignition and manually lighting one could ... | |
| gas furnace | 11/3/2007 |
| Q: Maybe you can help me. I have a vented floor furnace. It is a Cozy brand. Model number 90P50A. I ... A: The most common failure would be the thermocouple. It is the metal stem device that the pilot flame ... | |
| Burnt electronics/electrical smell coming from my registers | 11/2/2007 |
| Q: I have a "burnt electronics/electrical" smell coming from my registers when using the heat. This ... A: Erik, it may be the heat exchanger is cracked and is overheating in the cracked area. The only way ... | |
| hot water furnace | 11/2/2007 |
| Q: We had a Burnham furnace installed two years ago, replacing the old furnace. This fall I tried to ... A: I am not understanding this Tom. If the pipe that fills the heater works the unit should have water, ... | |
| Radiator | 11/1/2007 |
| Q: I currently have an oil furnace and it works however two of my radiators are not working. I was told ... A: Something is totally not making sense. If you have an oil furnace, you would not have radiators. You ... | |
| Janitrol furnace | 10/31/2007 |
| Q: My pilot would not stay lit so I replaced the thermocouple. Still wouldn't stay lit. I noticed ... A: This is a temperature limit switch and by all means it has to be replaced. You can get the model and ... | |
| magic chef gas closet furnace | 10/31/2007 |
| Q: i have a magic chef forced warm air unit with built in ac 15 years old i am trying to find a ... A: In my opinion Carrier makes some of the finest self contained units similar to this. They call them ... | |
| Furnace turning on, but no heat coming up | 10/30/2007 |
| Q: When I turn my furance on, it gets going, and then just shuts off and no heat comes up. My furance ... A: There are many safety controls on a furnace. It may be the fan is not energizing and the burners ... | |
| tubing or pipe | 10/29/2007 |
| Q: why can't I use ridged copper pipe where I can instead of the costly tubing when i run my ... A: Not some, but all refrigeration tubing whether rigid or soft is dehydrated. This means after the ... | |
| super heat and sub cool | 10/29/2007 |
| Q: i have been in the ac field for 12 yrs and im stumped on superheat an sub cool theory. im reading ... A: These are two of the most controversial items amongst those who think they know everything. I had a ... | |
| gas furnance | 10/28/2007 |
| Q: I have a brand new gas furnace (KeepRite C8PN100F14B). It works well for a few days after it is ... A: The thermostat sends a call for heat to a circuit board which in turn begins the heating sequence. ... | |
| Terrible noise from heat pump outside unit | 10/28/2007 |
| Q: I turned on my heat for the first time this year and noticed a terrible noise coming from the ... A: It sounds like another compressor problem. The strip heat will operate and you will have heat, but ... | |
| Gas Appliance in Bedroom | 10/27/2007 |
| Q: I just recently bought a remodeled 1950 house. It had a gas fired water heater and boiler for a ... A: With the way the code is written, there is no legal way to modify this to be legal if it remains ... | |
| Lennox air conditioner | 10/27/2007 |
| Q: We had to evacuate for the fires in southern Cal. A/C was working fine when we left (turned off when ... A: The heat would not usually be affected by the outdoor unit. Check the wiring, low voltage especially ... | |
| A/C problem | 10/26/2007 |
| Q: I'm having a problem figuring out what is wrong with my home central air conditioner. The outside ... A: It is still considered a two pole contactor because it has two line voltage connections. It is a ... | |
| HVAC Brands | 10/25/2007 |
| Q: What can you tell me about the Goodman brand? What brand would you recommend as a replacement unit? A: I have heard this before also, but the units I have are no more or less loud than any other brand. ... | |
| Condensation Problem | 10/25/2007 |
| Q: I live in Miami, where it's very humid. I have central air. Because of the unit's location, the ... A: An outdoor sump pump could be used and they are only about a 1/4 hp motor, so they pull very little. ... | |
| Rheem NG to LPG | 10/24/2007 |
| Q: Ok I recently picked up a Rheem Criterion (RGBG 16NAMER) that is set up to NG and I want to make it ... A: Find a Rheem dealer or service contractor and have the unit model and serial numbers. The only parts ... | |
| A/C problem | 10/23/2007 |
| Q: I'm having a problem figuring out what is wrong with my home central air conditioner. The outside ... A: This is a common style of contactor. You are also making a common mistake checking to ground. The ... | |
| Bryant heat pump | 10/22/2007 |
| Q: Bryant 698B Evolution Heat Pump. The compressor runs in heat or cool mode but outside unit fan does ... A: I am not sure what this switch would be for unless it is the sole means for keeping the fan off in ... | |
| Combination Boiler issues | 10/21/2007 |
| Q: there, I have an Ideal Combination Boiler. It's been working perfectly, but now seems to have ... A: The pressure gauge needs to be replaced. As the water heats, the pressure rises. It may be cycling ... | |
| Carrier furnace stays on even if thermostat is disconnected. | 10/21/2007 |
| Q: I recently changed my doorbell transformer that was located on top of the on/off switch for the ... A: Someone was using the unit transformer for the doorbell. You need to install a separate transformer ... | |
| Trane XL90 | 10/20/2007 |
| Q: I have a trane xl90 with a heating issue. Every now and then the heat would stop working. Meaning I ... A: Check the inducer fan including the blower wheel it drives. Sometimes these wheels will disentigrate ... | |
| Puron AC units | 10/18/2007 |
| Q: I recently upgraded my old two zone residential central air to Carrier Performance Series Puron ... A: I do not agree with him if this filter is replaced on a regular schedule. He is going by the fact ... | |
| armstrong furnace | 10/17/2007 |
| Q: I am brand new to the hvac industry.I was working on an armstorng furnace M#G1N80AT100D22CL-1 , ... A: It appears the limit is working correctly since it could be jumpered and operate. I suspect there is ... | |
| Exaust blower cycles on/off after furnace is off | 10/16/2007 |
| Q: I have an Armstong Ultra SX90 furnace. It heats just fine, however, when it reaches the temp set on ... A: If it continues to cut on and off after several cycles, the blower control may be defective, however ... | |
| heat will not start has code 2 for pressure switch | 10/16/2007 |
| Q: I have a ruud achiever 90 plus. No heat starts and has code 2. I checked fault and it is for ... A: This is a very common part to fail, it has a bellows inside that a pin hole will affect and not ... | |
| Honeywell RTH6300B thermostat | 10/15/2007 |
| Q: Am installing new programmable therm in 2 yo home. Have wires O/W2,R,Y/Y2,G,C,W/W1 on old therm. On ... A: I looked this stat up on the Honeywell site and it is not designed for a heat pump with auxillary ... | |
| natural gas boiler | 10/15/2007 |
| Q: I have a whel-mclan natural gas boiler, it worked all last winter with no problem's it has a self ... A: Travis, this could be a number of things and not being able to see it to diagnose it, I could only ... | |
| Boiler Issues | 10/14/2007 |
| Q: I have a Boiler (American Standard G2 from 1971). Dual-zoned. One zone has old radiators, but old ... A: I agree, it only takes a few to give us all a bad name. First, without knowing the engineering of ... | |
| Air availability. | 10/14/2007 |
| Q: I live in a 29 yr old Vindale double wide mobile home. The furnace is an Intertherm 1750 80k btu ... A: The heater is being starved for combustion air when the furnace is operating. The hole in the floor ... | |
| arcoaire gas furnace | 10/13/2007 |
| Q: I have an arcoaire that will ignite the first burner and then shuts off? Any way for me to solve the ... A: The most common part to fail is the thermocouple. This is the device the pilot light is burning ... | |
| Wiring and overcurrant protection | 10/12/2007 |
| Q: I have been asked to give a quote on installing the wiring for 2 10Ton AC units that are going to be ... A: This is called a package unit as it is a self contained system. I think you will be good with #6, ... | |
| Wiring and overcurrant protection | 10/11/2007 |
| Q: I have been asked to give a quote on installing the wiring for 2 10Ton AC units that are going to be ... A: To be on the conservative side and also since it is a common disconnect and less expensive, I would ... | |
| gas furnace exhaust flue length | 10/11/2007 |
| Q: I have a Rheem 90 plus furnace that I would like to move the exhaust flue to to different location. ... A: It depends on the slope of the vent and how well the final device drafts, be it a chimney or the ... | |
| Compressor Terminals Melting | 10/4/2007 |
| Q: This question concerns my home HVAC system. About 1 month ago the purple wire on my compressor (not ... A: Check the amps on start up to see if the start amps stay high for too long. It may be the start ... | |
| Fan / Gas Furnace Problem | 10/3/2007 |
| Q: We just fired up our Olsen Gas Furnace (model HW8204 IID, I believe). It runs normally for about ... A: You have a very serious problem. There are supposed to be safety controls that very quickly will ... | |
| Boiler selection | 10/3/2007 |
| Q: Mr. Cook, I am changing from oil boiler to natural gas boiler. Have bids from Lennox, Bryant and ... A: Some years ago just as with the heat pumps or other HVAC equipment, there were significant ... | |
| Lock out relay on water to air heat pump | 9/27/2007 |
| Q: I have a Weather King Water To Air Heat Pump Model Number WRH034-1H. It had a bad Compressor ... A: The control circuit to the relay and the contactor should be a continuous loop circuit. The common ... | |
| Coleman Mach - Blower/Fan Motor out | 9/26/2007 |
| Q: Blower/Fan Motor down - vibration/noise prior to failure, radial shaft play, hums but won't run. ... A: Before replacing the motor, try replacing the capacitor as this will cause the same problem you are ... | |
| noise in wall from ac line | 9/26/2007 |
| Q: I have a unit outside a bedroom and there is a loud noise/vibration from that wall. The ac guy ... A: That is really all it can be. The only thing in the walls would be the refrigerant piping from the ... | |
| Boiler high water pressure | 9/25/2007 |
| Q: I'm building my own house and have installed in floor radiant heat. The heating system was supposed ... A: There should have been an expansion tank installed that would hold the extra water volume to keep ... | |
| ac | 9/23/2007 |
| Q: I curently have a 2.5 ton unit that is 17 yrs old i have had it reapired twice this summeer and im ... A: It has to be matched with the same indoor coil. Some other advice, replacing with a large unit can ... | |
| Thermostats | 9/19/2007 |
| Q: My Connecticut home was built in 2000 and has 4 thermostats to control the oil boiler and 2 outside ... A: I am certain you are correct in the two without control switches are dependent on the others to ... | |
| central air condition ing | 9/17/2007 |
| Q: I recently installed a 3 ton condensor (13 ser). Can I install a 4 ton air handler for better air ... A: No. I am reading an article now in the new issue of RSES Journal and mismatching equipment is ... | |
| Installing Noma Programmable Therostat | 9/17/2007 |
| Q: Good evening. I've never posted to this forum before but I thought I'd try... I just bought a ... A: A thermostat is merely a sophisticated switch. On a two wire stat, you are installing a switch in of ... | |
| condenser leaking | 9/15/2007 |
| Q: I think the condenser is the part of the central AC that is indoors. Anyway, the indoor part of my ... A: There is a drain from the indoor unit that goes to the outside. You can blow compressed air or water ... | |
| Electrical wiring digram | 9/14/2007 |
| Q: Sir, I'm looking for a wiring electrical digram for a Trane three phase 240 system. The system is at ... A: Most manufacturing home sites offer diagrams but it requires the model and serial numbers. If the ... | |
| Pulsating noise | 9/14/2007 |
| Q: I have a 1565 sq ft home in phoenix, az. I just installed a new 5 ton roof mounted heatpump. I had ... A: With the unit being a roof mounted unit, I more believe it is the compressor making the tone. Try ... | |
| Air conditioners | 9/12/2007 |
| Q: The compressor on my Rheem air conditioner recently blew. I am looking to replace the whole unit ... A: I just replaced both of my Carrier units that were 15 years old with two Goodman units. I personally ... | |
| Lux 1500 Thermostat | 9/12/2007 |
| Q: I installed the thermostat as described in a previous post, the green wire to the G terminal, the ... A: With a/c on a gas furnace, the Y terminal wire should not connect at all to the furnace, but go ... | |
| furnace--nothing | 9/9/2007 |
| Q: I turned the air conditioner off yesterday. It was working fine. Today I went to turn it on, ... A: You would have to verify the unit is getting power by checking with a volt meter at the unit itself, ... | |
| A/C runs continuously when stat is set below 80 | 9/8/2007 |
| Q: Here's my problem. We just had the coil in our system replaced. Before it was even replaced, I ... A: You do not say what the outdoor temperature is. Almost every system has a design criteria of an ... | |
| residential gas HW heat- control + misc. | 9/7/2007 |
| Q: I recently helped my stepson buy an older (1920's), 2-story + basement, "as-is" house in Pittsburgh, ... A: Considering the age of this boiler system, it would not be overkill to clean it annually before ... | |
| residential gas HW heat- control + misc. | 9/6/2007 |
| Q: I recently helped my stepson buy an older (1920's), 2-story + basement, "as-is" house in Pittsburgh, ... A: I will begin with the most critical point. DO NOT operate this boiler without a low water cut off. ... | |
| overflow excessive | 9/5/2007 |
| Q: My drip pan drains through an outside line at my roofline. It continually drips alot. Can this be ... A: With a unit in an attic, the main drain is usally hidden where it drains to the outside. The ... | |
| Home Central AC | 9/5/2007 |
| Q: My central home AC isn't blowing any cold air. The coil and outside unit is 13 years old. About ... A: The outside fan and compressor should both be powered by the same contactor, this contactor is what ... | |
| hvac blowing 5amp fuse on 24v transformers | 9/4/2007 |
| Q: I have a 2 year old Rheem system. A RPMM-048JAZ heat pump and RBHK-24J11SU6 air handler along with ... A: There is either a shorted 24 volt device, usually a relay or contactor coil, or there is a damaged ... | |
| Inside Unit Freezing up | 9/3/2007 |
| Q: we recently started having problems with our inside evaporator coils freezing up and not cooling our ... A: There is no switch inside to turn the fan on. It appears there is a thermostat problem since the fan ... | |
| Compressor cycling on and off | 9/2/2007 |
| Q: I have one of those long wall type "motel" type air conditioners in my office. If fits in a wide box ... A: It sounds as though the sleeve for the unit is somehow preventing the heat from escaping from the ... | |
| Tilted AC drip pan in forced air duct | 8/31/2007 |
| Q: I have a AC system installed in a central air furnace ("A "coils with a drip pan). The system is 7 ... A: Many coils are not supported, they will usually remain in place due to their weight and the ... | |
| no ac | 8/30/2007 |
| Q: I have an 11 yr old york split unit. The outside unit fan and compressor did not run. From info on ... A: If the capacitor was only a two connection capacitor, it does not assist the compressor. A three ... | |
| Bad Small When we Run our AC | 8/29/2007 |
| Q: My name is Josh Cunningham. My girlfriend and I have recently purchased a townhouse in Chicago and ... A: I am not sure if this is what you are dealing with, but there is actually a term for an a/c odor ... | |
| Home A/C Question | 8/28/2007 |
| Q: I just moved into a newly built house in Houston, TX and I have been looking into how my A/C works. ... A: Having a central return is very common. Return size is an engineered calculation. If you add returns ... | |
| HVAC Blower | 8/28/2007 |
| Q: I have a Carrier Heat Pump that was installed in 1994. Recently, the blower started running all the ... A: It appears the fan relay has stuck. You can trace the fan motor wires to this relay or look on the ... | |
| No power to thermostat | 8/27/2007 |
| Q: We had a lightening storm and my Heat Pump stopped working. I have no power to my thermostat. The ... A: Apparently some low voltage componente was damaged in the storm and is causing a short in the ... | |
| runing only 1 AC | 8/24/2007 |
| Q: I live in Oklahoma City,OK.Tempature is hot 97 everyday.I live alone in a 4000sq.ft. home. Upstairs: ... A: First, I would consider a permanent door to separate the areas. I have a similar home and a ... | |
| residential a/c controls | 8/23/2007 |
| Q: The outside unit will come on but not the inside air handler. The thermostat is set on fan auto but ... A: I agree it does not appear to be a motor problem, I am more suspect of the new thermostat, or was ... | |
| replacing an old thermostat | 8/23/2007 |
| Q: I currently have a Trane Weathertron thermostat. I am trying to replace it with a Hunter digital ... A: You did not state what type of system you have, it is a heat pump or a/c with some other type of ... | |
| frozen line from indoor to outdoor unit | 8/22/2007 |
| Q: 2 months ago a/c unit was blowing air-warm air. Unit had ice inside. Repair man replaced evaporator ... A: It may be the indoor coil is still frozen. It takes hours without a fan to deice the coil. You will ... | |
| Where to put A/C | 8/22/2007 |
| Q: Cook, I have two-story house (about 3500 sq size in Oklahoma)which is going to be built. I have no ... A: I am a little confused. You are saying there are two units, is there a downstairs unit and an ... | |
| A/C NOT COOLIN | 8/21/2007 |
| Q: WHAT SHOULD I CHECK if my units pressure is okay the evaporator fan is working but the supply air ... A: A simple test of a system is to check the return air temperature with a good thermometer at the ... | |
| cool air, but not blowing hard enough | 8/21/2007 |
| Q: I noticed just yesterday (this has been during a stretch of 7 or more 98-100 degree days with NO ... A: The most common design conditions for sizing a system for a structure includes in the calculations a ... | |
| ZONE AC = WATER UNDER HOUSE | 8/10/2007 |
| Q: I have a 4000 sq ft home, 2 story home with zone AC and now a substantial amount of water under my ... A: This could be caused by several things. The first thing I would check is the drain due to the amount ... | |
| air conditioner not shutting off now 6 days and not cooling above 80 | 8/10/2007 |
| Q: My air has been running non stop 6 days and will not cool. During early morning may go to 76 but by ... A: A simple diagnostic test of a system is to check the temperature. At the return where the filter is, ... | |
| A/C not working during the day | 8/9/2007 |
| Q: Here is the scenerio: I live in an upstairs apartment and the A/C runs constantly during the day. At ... A: A rough rule of thumb is to attempt close to a 20 degree temperature difference in the return and ... | |
| Wiring new thermostat | 8/9/2007 |
| Q: I have a Carrier FB4ANF042. The thermostat is a Hunter model 44408. I just purchased a Hunter ... A: Brent, I have attempted to get a wiring diagram for each of these with no success. I was able to ... | |
| condensation pipe issues | 8/8/2007 |
| Q: We have a central air conditioning system. The condensation pipe which exits to the outdoors is wet ... A: If the drain is located before the blower in the fan section, a trap is required to break the ... | |
| Reclaced Condenser Motor Now Not Cooling | 8/8/2007 |
| Q: I was having problems with my Ducane AC units condenser motor. It would run for about 30 minutes and ... A: The fan motor that circulates the air inside is on a different circuit from the outdoor unit and can ... | |
| A/C Compressor | 8/7/2007 |
| Q: My air conditioning unit is not cooling very well. The inside unit runs constantly and the outside ... A: On the surface it does appear the unit charge is low as it sounds like the unit is cycling on low ... | |
| outside ac unit | 8/7/2007 |
| Q: i have a fairly new home 4 yrs old with a Goodman manufacturing unit i came home to a hot house ... A: It appears the outdoor fan motor capacitor has failed. It is a simple replacement. Turn off the ... | |
| AC | 8/6/2007 |
| Q: We have a Bryant 5T central ait unit which was installed 2 years ago and today the central air unit ... A: I know you are trying to describe this in the best way possible, but there are conflicting items. At ... | |
| ac compressor | 8/6/2007 |
| Q: just installed new electric furnace inside.lights are dimming for short time when the outside ... A: I agree that the furnace installation should have nothing to do with the a/c operation. I think it ... | |
| AC condensation | 8/5/2007 |
| Q: I have a two unit central AC systems and two pvc condensation drip lines that go along my roofline ... A: I would check the unit that is not draining to be sure the drain is not clogged and all water is ... | |
| York Commercial Air unit problem | 8/5/2007 |
| Q: I am working on a YORK Model Number DM120 no options for a resturant and this unit got hit by ... A: Since you said it first, I totally agree Bob, I do not use York units period! I would have to ... | |
| Blower motor issues | 8/4/2007 |
| Q: I am trying to fix a frasier-johnston air handler (has a furnace and is attached to an outdoor a/c ... A: I would try another capacitor. It sounds classic of a failed capacitor and double check the wiring ... | |
| a/c | 8/3/2007 |
| Q: I installed a brand new comfortmaker furnace in my house this winter. It works great. I remeved a ... A: The circuit that makes the outdoor unit or the a/c operate, is the Y circuit. Make sure at the ... | |
| Heat Pump & Air Handler | 8/3/2007 |
| Q: We have an Amana Heat Pump & Air Handler System and lately the unit has been turning on and off ... A: This may indicate the refrigerant charge is low and the unit is cycling on low pressure. I would ... | |
| air conditioner product | 8/2/2007 |
| Q: I belive my air condition coils need cleaning. I went outside and cleaned that one but I was told ... A: If you are not sure where the filters are located, they are most likely clogged. If this is a ... | |
| HVAC Evap. Fan Prob. | 8/2/2007 |
| Q: Issue: Thermostat triggers AC to turn on properly, condenser unit kicks in properly, but evaporator ... A: To eliminate the motor or the motor capacitor as a problem that is causing the module to hum, the ... | |
| Condensor fan wiring | 8/1/2007 |
| Q: I have an older BDP division of Carrier roof top unit and the condensor fan motor is seizing. I have ... A: The old motor was not wired correctly. With only one brown wire, the black wire should have been ... | |
| AC Not cooling house | 7/31/2007 |
| Q: We have been dealing with this problem since the house was built 4 years ago, but it was not serious ... A: I apologize for the industry due to the contractors you have already dealt with. It gives us all a ... | |
| Wiring a window AC | 7/30/2007 |
| Q: We are trying to wire an 18000 BTU window AC. The sales people at Lowes sold us 12/2 wire. The AC ... A: This appears to be a 240 volt unit, not a 120 volt. Verify this with the name plate on the unit. You ... | |
| New HVAC install | 7/30/2007 |
| Q: I am planning to get a total forced air system in my 5-bedroom brick bungalow, which now has window ... A: Since a complete duct system must be installed and insulated for a/c, I would go with a heat pump. I ... | |
| Air Conditioning unit not cooling home | 7/29/2007 |
| Q: Good morning. We recently purchased a 5 year old home. Before moving in the unit cooled the house. ... A: Check the outdoor unit again. The fan on top may be operating but not the compressor. The fan is ... | |
| HVAC Evap. Fan Prob. | 7/28/2007 |
| Q: Issue: Thermostat triggers AC to turn on properly, condenser unit kicks in properly, but evaporator ... A: I agree this is an expensive part to replace for the benefit. You can use a simple 24 volt power ... | |
| ac compressor fan motor | 7/28/2007 |
| Q: ac compressor fan motor only starts after a push or spin starting it like an old propeller plane. It ... A: This is a classic sign of a failed capacitor. It looks like a small can, either round or oval and is ... | |
| Business AC | 7/27/2007 |
| Q: I own a women's fitness gym. We are in a small strip mall. We set our thermostat for 70 and as the ... A: The land lord may be partially correct. There is a very detailed load calculation that is required ... | |
| Ground Heat Pump | 7/26/2007 |
| Q: We just learned that our 12-year-old Lennox Complete Heat (gas) system is leaking and needs either ... A: I must be in the wrong location. In NC, I could not imagine a $10,000 heat pump if it was a 20 seer ... | |
| HVAC water supply lines | 7/25/2007 |
| Q: Where do the water supply lines connect on my hot water heater from my HVAC system. A: I need further clarification. If this is a standard water heater, they will not interconnect, and in ... | |
| A/C Condensation drain line was plugged | 7/25/2007 |
| Q: I blew air from a tank in the drain line and found out that the line ended outside the house ... A: If there is enough slope from the inside to the outside, you can cut the pipe and extend it through ... | |
| central air conditioner | 7/24/2007 |
| Q: I have a 1500 SQ. foot home, 20 YR. old. What is the best central air conditioner system with heat ... A: For sizing there is a very detailed load calculation that must be done. It takes into consideration ... | |
| AC help | 7/23/2007 |
| Q: I live in central Florida. Woke up this morning after a long night of rain and the thermostat was ... A: The most common problem is the thermostat wire feeding the outdoor unit. Sometimes an animal will ... | |
| Goodman Furnace AC Compressor Wiring Issue/ Fuse blowing | 7/23/2007 |
| Q: I have a GMV95/GCV9 Two-Stage Gas-Fired Warm Air Furnace that was recently installed as a ... A: Since it is apparent the problem is in the cooling circuit, I would connect the outdoor unit ... | |
| condensation flooding basement | 7/22/2007 |
| Q: Tom here in Atlanta Ga First Off I am quite mechanicaly, remodling, can usualy fix anything ... A: There is a drain pan directly under the coil that should be trapping all condensate and exiting the ... | |
| drain pan line | 7/22/2007 |
| Q: I recently asked a question about excessive sweating of my RUUD inside air handler. (Don't remember ... A: The drain should not have been piped into a vent. It should be pumped to the outside via whatever ... | |
| compresor randomly not coming on | 7/21/2007 |
| Q: recently, we have been experiencing a random problem with our a/c. sometimes, the outside unit does ... A: The outdoor unit is on a different power circuit from the indoor fan, so they can operate ... | |
| bleach for disinfecting coils | 7/18/2007 |
| Q: I have two York heat pumps that are less than a year old. I just found out that I was suppose to ... A: I would never use bleach for the reasons you indicated. If the units are in the attic, by code they ... | |
| Refrigerated Air Units | 7/18/2007 |
| Q: My spouse & I have a question and dispute about refrigerated air conditioners. We had a big swamp ... A: Since different rooms have different heat loads, depending on window direction, shade, etc. I would ... | |
| FADC-048JAS AC Unit | 7/17/2007 |
| Q: We have this unit for about 7 years now. for the last 2 years in the middle of the summer it starts ... A: A system should NEVER need additional refrigerant. The only reason a charge gets low is the system ... | |
| 10 seer part available. | 7/16/2007 |
| Q: I was told that 10 seers parts for a central ac system are no longer available. When changing the 10 ... A: This tech is taking you for a ride. For one, it is against mechanical code to mismatch equipment. A ... | |
| Ac cooling problem | 7/14/2007 |
| Q: I have 3 ton unit for 1600 sqft. its working good in tropical weather. whenever temp raise 85 to 90 ... A: It is difficult to tell if the system is operating normally under these conditions, there may just ... | |
| A Coil freezes up | 7/14/2007 |
| Q: My A coil keeps freezing up after a few weeks of AC usage. This is the third year its happened. The ... A: A low charge or low air flow are the two main reasons a coil will ice up. With a clean coil, it is ... | |
| A/C problems | 7/13/2007 |
| Q: I m having problems with my A/C, the thermostat stay in 82* and no cool air is coming from the duct. ... A: Was the outdoor unit operating? It is on a different circuit from the indoor unit, the indoor fan ... | |
| Corsaire Air condition | 7/12/2007 |
| Q: Corsaire air condition (a remote model-FADC-048JAS integrated with a Rheem Classical Plus vertical ... A: You need to use an amp meter on the outdoor unit circuit wiring to see how many amps the unit is ... | |
| Lets try this one! | 7/11/2007 |
| Q: Let me give you some background on this 4 ton 10 seer Carrier system. Its 6 years old and 6 months ... A: I totally disagree that all the above can be correct. The LS is the low side pressure. On an R22 ... | |
| AC Fan vibrates | 7/2/2007 |
| Q: I have a 2 year old Rudd outside AC heat pump with the Fan mounted on top and it has started to ... A: It may just be the prop itself is damaged. I would remove the fan prop, go to an HVAC supply and try ... | |
| Replacing Fan Motor | 7/1/2007 |
| Q: I am replacing the Fan Motor of my York Heat Pump. The old motor had 3 wires (Purple, Brown and ... A: Connect the white wire of the new motor to the terminal on the old capacitor where the purple wire ... | |
| adding ductwork to addition | 6/30/2007 |
| Q: Mr. Cook, I am working on refinishing a bonus room in my home and need to run a single duct. The ... A: There is a very detailed load calculation required in order to size ductwork. Not only the room ... | |
| cycle times | 6/28/2007 |
| Q: I have a comfort king furnace(rheem). The furnace seems ok but my question is with the air system. I ... A: Refrigerant should never have to be added. The only reason to add would be if the unit developed a ... | |
| Thermostat blows fuse | 6/28/2007 |
| Q: I turned on the AC this season and ....nothing. Checked the compressor - pushed in the contactor - ... A: This indicates that either the Y wire is damaged, or one of the controls in the outdoor unit is ... | |
| clogged condensate lines | 6/27/2007 |
| Q: My a/c unit is located upstairs in it's own closet. Why are there 2 condensate drain lines attached ... A: One of the drains where connected at the unit should be slightly lower than the other and is the ... | |
| Thermostat blows fuse | 6/27/2007 |
| Q: I turned on the AC this season and ....nothing. Checked the compressor - pushed in the contactor - ... A: This usually indicates there is a control wire that is shorting out, or that the thermostat is ... | |
| Fan motor comes on w/o condenser running | 6/26/2007 |
| Q: I have a Goodman central a/c (approx 5 yrs old). The blower in the attic will kick on and off even ... A: Is this a heat pump or do you have fuel heat? If this has fuel heat, there is a different control ... | |
| air conditioner is not cooling the house down | 6/26/2007 |
| Q: I noticed the other night that my air conditioner is not cooling the house the way it usually does. ... A: There are two things that will cause icing of the coil and the lines. One is a lack of air flow. Are ... | |
| Heil Unit - Outside | 6/25/2007 |
| Q: Power outage, a few blocks were affected that I know of. Dunno why, but it was restored w/in an ... A: There may be fuses in the outdoor disconnect, be sure to check them. If the indoor fan does not run ... | |
| compressor noise | 6/25/2007 |
| Q: I have a new carrier 5 ton split system 1 month old scrool comp.has liquid line sol.valve since ... A: The internal pressures will equalize when the unit shuts down. It seems the pressures are rotating ... | |
| WALKIN COOLER | 6/24/2007 |
| Q: I own a store that has a Bohn unit that freezes up the day/day after a delivery. My delivery person ... A: The fans can continue to operate inside of the cooler, but the refrigeration units needs to switched ... | |
| Leaky system | 6/23/2007 |
| Q: I have 2 Rheem RAMB-048JAZ 3-ton units Mfg date 11/01 installed March-April (est) 2002. New A-coils, ... A: Cracks that continue to occur in my experience has either been caused by extreme compressor ... | |
| Trane AC not cooling | 6/23/2007 |
| Q: I have a Trane XE 90 unit cooling cooling a loft/upper bedroom (a larger Trane unit cools the rest ... A: It is common with a unit that has a low refrigerant charge for it to affect the unit after the coils ... | |
| Loose wire on outside compressor | 6/21/2007 |
| Q: I have a Trane XB1000 HVAC unit. After I opened the outside compressor to clean the coils, I ... A: Some fan motors only have a two wire capacitor connection, others do have three. The only way to be ... | |
| RE: Trane XL-80 heat control issue | 6/21/2007 |
| Q: I have a trane xl-80 two stage gas heating system with white rodgers 50A51-495 controls. when I try ... A: The outdoor unit is on a separate cicuit than the indoor unit. First, make sure the outdoor unit has ... | |
| central air system | 6/20/2007 |
| Q: My central air is blowing out fan like air,the thermostat is set between 70-78 degrees.The house is ... A: The indoor unit with the blower fan is on a separate circuit than the outdoor unit, so it can be on ... | |
| York A/C with Gas heat | 6/20/2007 |
| Q: I won't bother with model numbers, but my girlfiend's house has a York roof mounted A/C unit with ... A: By all indications the unit as far as the refrigeration is operating properly. The large line should ... | |
| Xenon air conditioner | 6/19/2007 |
| Q: My neighbor had a transformer replaced resulting in 7 hours of no electricity. When the electricity ... A: I personally think so. I have not examined the part, but if the contacts were melted, when the ... | |
| Defrost cycle | 6/19/2007 |
| Q: I get home from work around 1630 hrs an turn it on to heat the house. I notice that the system ... A: Regardless of the outdoor temperature, all heat pumps are on a timer for defrost, or they initiate ... | |
| Jantorial Furnace | 6/17/2007 |
| Q: My husband move the location of our thermostat ....in doing so something happened to the wiring and ... A: You can either locate a Janitrol dealer, or their web site and you should be able to down load a ... | |
| thermostat ritetemp 8050c w/trane hvac | 6/17/2007 |
| Q: put thermostat in w/ B & O hooked up. Turned on power w/out realizing now system won't come back on. ... A: There is a good chance it damaged the low voltage transformer. Open the indoor fan section and ... | |
| AC Drain pouring water out. | 6/16/2007 |
| Q: I'm concerned about my Air Conditioner. The air coming out of the vents doesn't seem to be ... A: This amount of condensate is one of the most simple tests for a systems operation. It appears to be ... | |
| Kenmore A/C window unit | 6/16/2007 |
| Q: We have a pool of water in the room after about an hour of use. She is about 5 years old and, the ... A: The unit is designed with slope inside of the cabinet and should have been installed perfectly ... | |
| Thermostat won't control A\C | 6/15/2007 |
| Q: Need help! I have Intertherm furnace and ac system model number MGH-100-ABWN-05 which is about 19 ... A: The Y terminal is for the outdoor a/c unit. Make sure in the thermostat that the red wire on the R ... | |
| Rheem Classic inside unit | 6/15/2007 |
| Q: On a new unit, I am having heavy condensation from the fins area. This condensation is not running ... A: First, make sure the unit is level so if the condensation is building up in the pan and overflowing ... | |
| Heat pump not blowing cold air | 6/14/2007 |
| Q: I have a comfortmaker soft sound 1200+ Heat pump Model # CHP224AKC1. The rest of the unit is in the ... A: It appears to be and if so the leak needs to be located and repaired or it will just get low again. ... | |
| Cooling two rooms with one unit | 6/13/2007 |
| Q: I live in an apartment in NYC. The only outlet that I can use for my window AC unit is in the 12x12 ... A: I would set the fan about 3 feet from the bedroom door in the living room blowing towards the ... | |
| air conditioning repair | 6/7/2007 |
| Q: My repair man wants to charge me $700 to install a condensing coil.The unit is only one year ... A: You do not state the brand of this unit, but this soon under warranty the labor is usually also ... | |
| refrigerated air residential | 5/30/2007 |
| Q: I have a 2 year old Goodman refrigerated AC on my home. All the breakers and fused have been ... A: First of all, I apologize for the delay, my computer crashed and it took the technician a full day ... | |
| CARRIER 58PAV | 5/20/2007 |
| Q: MY CARRIER IGNITER DOES NOT GLOW BUT THE BLOWER STARTS UP FOR A MINUTE THEN THE DRAFT INDUCER STARTS ... A: Try connecting the two wires on the pressure switch and see if it operates. The pressure switch is ... | |
| Miller furnace vibration | 5/19/2007 |
| Q: I’ve only owned the home for 3 years, but have had the furnace cleaned and serviced every year, ... A: If he regularly services oil burners, he should know how to set the air/fuel mixture. There is some ... | |
| Compresser Damaged? | 5/18/2007 |
| Q: I recently had a new central A/C system installed. Condenser, evap coil, duct work, etc. We had a ... A: I would try to get the installer to extend your compressor warranty at least another two years as ... | |
| Electrical connection-heater | 5/17/2007 |
| Q: I just replaced/installed a new Rheem 2.5ton a/c-heating unit in my home. I cannot get the heating ... A: Look at the thermostat wiring to see if there is just a single R terminal, or a Rc and a Rh ... | |
| Miller Split 13 Seer Mobile Home Install | 5/16/2007 |
| Q: How to install a Miller 13 Seer 2/5 Tony AC Unit & matching coil. Both unit and coil have quick ... A: The unit should have a drier inside of the unit, but it will now need replacing as moisture has ... | |
| a/c fan won't shut off | 5/16/2007 |
| Q: If our temperature upstairs gets above 90, the blower fan continuously runs while seemingly ... A: If the heating unit is a fuel furnace, this is very possible. The fan bypasses the thermostat and is ... | |
| Electrical connection-heater | 5/15/2007 |
| Q: I just replaced/installed a new Rheem 2.5ton a/c-heating unit in my home. I cannot get the heating ... A: Is this a heat pump, if so is the heat pump portion working in heat, just the strips are not, or is ... | |
| A/C Compressor Won't Start | 5/14/2007 |
| Q: J, my wife and I purchased a pre-owned home in January. Due to about 3 feet of snow on the ground ... A: Since the stat was replaced, lets start there. Remove the front portion of the stat to expose the ... | |
| AC | 5/13/2007 |
| Q: Woke up sweating! Discovered AC blowing but no cool air. Unit was serviced 2 weeks ago, 2 lbs freon ... A: Either the outdoor fan motor has locked up or the capacitor has failed. I would try a capacitor ... | |
| AC not cooling to set temp | 5/13/2007 |
| Q: About 3 weeks ago my HVAC unit stopped working. I called a local company to take a look at it and ... A: Your friend was almost correct. If you put a thermometer in the return where the filter was and ... | |
| Loss of power to outside unit. | 5/10/2007 |
| Q: Mr. Cook The problem I'm having is when I turn my thermostat on the outside unit doesn't come on. ... A: There is nothing in the 24 volt circuit that would directly cause loss of 240 volts at the outdoor ... | |
| hvac | 5/9/2007 |
| Q: I diagnosed my air handler and found out that the blower motor relay was burned out. It is a Carrier ... A: It will require replacement of the entire board. A relay has a set of contact points inside very ... | |
| Hotpoint RL84 Tall Fridge Thermostat | 5/9/2007 |
| Q: I have brought a replacement thermostat. the issue is the original had 3 wires, earth, live and ... A: A thermostat is technically just a switch. The original had a ground, a circuit connection and the ... | |
| tesiting/refilling ac parts | 5/1/2007 |
| Q: Do you know how to put oil in the compressor. Also need to know how to test a Air condiioner ... A: It takes a special pump, almost like an old bicycle pump to put oil into the suction hose while the ... | |
| Fan operates even when Thermostat is off | 4/27/2007 |
| Q: We have a Goodman Central Air Unit and Gas furnace Heat. about 14 yrs and everything seems to bee ... A: On every gas furnace the fan is bypassed by the thermostat so the heat exchanger will be hot when ... | |
| Residential A/C Repair/Replacement Question | 4/26/2007 |
| Q: I have a 10 year old York 10 SEER unit (model H1RA048S06B) that's part of split unit paired with a ... A: A leak should be detectable by a good technician. It requires removing the refrigerant, pressurizing ... | |
| Intertherheatpump | 4/25/2007 |
| Q: My unit will not turn off, it only turns off when I trip the breaker. It started happening with the ... A: It appears the contactor is stuck in the outdoor unit. It is the device the power wires from the ... | |
| air conditioner | 4/25/2007 |
| Q: i turned my air on today for the second or third time this season. i turned it off around 7:00 pm ... A: I feel certain the outdoor contactor is stuck causing the outdoor unit to continue to run. Go ... | |
| Replacement A/C unit | 4/24/2007 |
| Q: We have a choice of two units. We are replacing a 13 year old Carrier seer 10 with heat pump. Our ... A: I would not trust any company that did not do a load calculation to determine the system my home ... | |
| Can I change schrader valve ? | 4/23/2007 |
| Q: I have the 608 certificate so I can work on small appliances that contain less than 5lbs of ... A: No. Evacuating to a separate tank is recovery. Pumping a system down can only be accomplished if ... | |
| central air - trane vs carrier | 4/18/2007 |
| Q: I live in CT and am looking to install central air. I have 2 quotes #1 - Trane XL14i (5 ton) plus ... A: Since $1600 is in question, obviously to some extent money is an object. The reason for pointing ... | |
| Residential A/C System | 4/16/2007 |
| Q: I am in the process of getting bids for a residential central A/C system. Currently leaning toward ... A: Yes, it is very common to utilize a single filtered return. Also, check into a Goodman unit also. I ... | |
| Too much heat from Hot water baseboard system | 4/14/2007 |
| Q: 2 of the three zones on our propane hot water baseboard heat seem to be stuck on (assuming the other ... A: The valves are to service a specific heater, while in operation I would not turn them off. The only ... | |
| Heat Pumps | 4/12/2007 |
| Q: Of the two brands, American Standard or Goodman...which would you recommend? Overall, what brand of ... A: American Standard purchased Trane several years ago. It is still an excellent unit, however in my ... | |
| Olsen Furnace | 4/11/2007 |
| Q: Recently bought a new house with an oil Olsen furnace which was installed in 2002. There is a bad ... A: When you stated it happens when firing, I first thought of the heat exchanger before you said it ... | |
| Home A/C | 4/11/2007 |
| Q: We have a 4 ton Heatpump (in the yard) with a 5 ton air handler (in the attic). The house and A/C ... A: I would never trust any kind of leak sealer. You did exactly what most technicians do, soak the ... | |
| Digital Thermostat | 4/5/2007 |
| Q: I am looking to install a digital thermostat and I live in FL where my primary concern is cooling. ... A: This is an option I have never encountered. I have seen stats keep the fan on after the compressor ... | |
| Replacement AC compressor - side discharge | 4/5/2007 |
| Q: I am replacing an AC system. The compressor unit has to be mounted under a raised deck and about 5 ... A: There used to be several manufacturers that made side discharge units, but I do not know of any ... | |
| condensation in central air ducts | 3/30/2007 |
| Q: Sir I live in the north east,today I went into my attic and found water in two ducts that com off ... A: First, make sure the condensate drain is clear. Water can spill over the pan into the ducts if the ... | |
| Air | 3/30/2007 |
| Q: I have a 2 story and we have been having trouble with the upstairs unit for awhile. The unit runs ... A: The first thing to check is the indoor coil. Make sure it is clean and the filter is clean. You are ... | |
| gaffers and sattler a\c | 3/29/2007 |
| Q: I am working on gaffers and sattler a\c -elect heat strip package unit. model EA-7.2-2 S\N 00578C4. ... A: I do not have a lead on this brand. You may have to locate a dealer that can locate parts in order ... | |
| Gas Furnace pilot won't light | 3/28/2007 |
| Q: I have a 1994 comfortmaker GNI080 natural gas furnace and the pilot quit lighting last night. the ... A: Occasionally it seems the circuit boards get confused. Have you turned the power off and waited a ... | |
| Fan not running | 3/28/2007 |
| Q: My central air unit fan is not running but the compressor is. What should i do to get it running. ... A: The indoor unit is on a different circuit than the outdoor unit. Make sure the indoor unit is ... | |
| Switching from heat to AC in home unit | 3/27/2007 |
| Q: how long should the switch take. i m ready for ac now. i switched the unit ove, but air is not ... A: It should switch immediately. With the thermostat set for cooling and the temperature turned down ... | |
| AC Replacement | 3/26/2007 |
| Q: My 20-year-old Carrier has a leaking refrigerant coil that my maintenance man (whom I trust) says ... A: If you are speaking of the indoor coil, I would just replace the coil. If the coil is the outdoor ... | |
| HVAC | 3/26/2007 |
| Q: I have heat vents (6 inch diameter) in the the floor (concrete slab) and want to have central air ... A: You would need to have a load calculation done to determine the amount of cooling required and this ... | |
| Thermostat wiring | 3/25/2007 |
| Q: I bought a Honeywell TH8000 thermostat to replace my old Lennox thermostat on my Lennox heat pump. ... A: I have been in this field for 25+ years, and I have never seen the terminal letters used on this ... | |
| Heat staying on past setting | 3/25/2007 |
| Q: I recently have been expierencing my heat staying on past the desried setting on my thermostat. I ... A: Alex it would really be trial and error as I can not test the different components. It may either be ... | |
| Compressor humm | 3/23/2007 |
| Q: I have a 2 ton Goodman central ac unit with a Bristol Compressor in it. The unit is 8 years old. I ... A: Even if a hard start will get this compressor going, it appears to be locked up. It is remotely ... | |
| oily smell from heater | 3/22/2007 |
| Q: We have a forced air oil heater, Last night when I got home I noticed a oil smell in the house. I ... A: Make sure the vent or the chimney is not blocked and there are no loose connections between the unit ... | |
| adding central air to a central heating unit | 3/21/2007 |
| Q: My mother has central heating in her home. We want to add air conditioning to it as well. How would ... A: It can easily be done. For efficiency, I would install a heat pump. They would use the same basic ... | |
| new HVAC install | 3/20/2007 |
| Q: My question is regarding choosing a HVAC system for a house that has no existing system. My main ... A: I appreciate you doing your homework, you are off to a great start. First, the load calculations ... | |
| replacing evaporative coolers w/ HVAC | 3/19/2007 |
| Q: I reside in El Paso, TX. 9 yr old, 2600 sq ft house w/2 Master Coolers and 2 Ultra 80 Armstrong ... A: Personally I just replaced both of my systems with Goodman units. If you ask, there is an extended ... | |
| Thermal Coupler | 3/19/2007 |
| Q: For the past three years, my girlfriend's heater keeps shutting down and the HVAC guy continues to ... A: It is the most common part to fail on a furnace. It is the small metal device that the pilot flame ... | |
| residential gas furnace | 3/17/2007 |
| Q: My furnace makes a loud clicking noise after the heat shuts off and continues til the heat goes back ... A: If this is an electronic ignition unit, it sounds like a safety is shutting the burners off and the ... | |
| Radiator Obsolescence? | 3/16/2007 |
| Q: Never delt with radiators. Contemplating buy a 1920s house with radiators. Is this type of system ... A: Radiator heat would either be a hot water or low pressure steam heat. Either are very reliable ... | |
| Lennox Heat Pump | 3/15/2007 |
| Q: I have a 12 year old Lennox Heat Pump. The other day when the heat was not running but the ... A: You may have a stuck contactor. The refrigerant can only move if the compressor is on, so I do not ... | |
| window a/c installation | 3/10/2007 |
| Q: I have a 14 ft vintage travel trailer that I want to install an a/c in. I have seen an internal ... A: You will not have enough ventilation. The unit must have a clear unobstucted access to the outside ... | |
| Pilot Relay coil keeps burning 'open' | 3/8/2007 |
| Q: Is it possible for a compressor or the compressor's capacitors to cause a transient spike that ... A: I know it was part of the board, but that is the problem with pilot relays in my opinion. The are ... | |
| Armstrong Air Ultra V Tech 91 (Installed 2003) | 3/8/2007 |
| Q: This particular unit is flashing a code of 6 flashes pause 4 flashes on the gas valve in the unit ... A: It could be either. I do not believe there is a different code for each limit. This could indicate a ... | |
| high press | 3/6/2007 |
| Q: the unit has r-22. sorryi have a 2 ton pancake split. the lines at the entrance to the condensing ... A: Both of these pressures are extremely high for R22. The first thing is to be sure the outdoor coil ... | |
| LENNOX G26 | 3/3/2007 |
| Q: I HAVE LENNOX G26 THAT CYCLES, BUT NO HEAT. I REPLACED THE IGNITION MODULE, THATS FINE. I STARTING ... A: There are so many safety controls on a gas furnace it is difficult to tell which may be causing the ... | |
| 5 year old Goodman heat pump cple36-1 | 3/3/2007 |
| Q: My problem is this Mr. Cook: During the hot summer months (Florida) I turn on our AC in the morning ... A: It may be a defective cooling relay in the outdoor unit, or the contactor itself that feeds the ... | |
| heating problem | 3/2/2007 |
| Q: I live in a two story home and have a single zone heating system. The upper floor gets hot while ... A: There have been controls of this type for many years in the commercial market, and more and more are ... | |
| Installing Residential Thermostat | 3/1/2007 |
| Q: REd and White which they are hooked up the way you stated but now I need to connect my common. ould ... A: Is this unit for heat only? If not you need the Yellow on Y for cooling, however if this is a heat ... | |
| Rheem Criterion II Gas Furnace | 3/1/2007 |
| Q: I am trying to gather information before I have to deal with a repair service regarding my Rheem ... A: I am certain this button is a manual reset safety control. If a fire had ensued, I am also certain ... | |
| Hot water heater | 2/26/2007 |
| Q: I have started to see cloudy water when I run the hot water only. Is this the beginning of rust or ... A: This is most often caused by air in the water and no source for concern. You can fill up a clear ... | |
| Lennox pulse 21 furnace heating problem | 2/26/2007 |
| Q: What is the purpose of the safety switch?Mr. Cook: I have a Lennox pulse 21 furnace approximately ... A: There are several safety switches. One is a temperature activated switch that will shut the unit ... | |
| Lennox pulse 21 furnace heating problem | 2/25/2007 |
| Q: Mr. Cook: I have a Lennox pulse 21 furnace approximately 10 years old that occasionally stops ... A: It is usually a failed safety or the safety is doing its job and shutting the furnace down. When the ... | |
| What would cause one loud vent? | 2/25/2007 |
| Q: I was looking for some help. We have a 3 ton HVAC unit with 5 ducts sending air. Two of them are 8", ... A: I am not sure how much area the total structure is, but a 3 ton unit is a lot of unit for no more ... | |
| baseboard hydronic system | 2/24/2007 |
| Q: Greetings I am in process of expanding my baseboard hydronic system to the second story. The ... A: I have to be straight up, I have never used pex. Its not that I am that old school, its just we do ... | |
| Installing Residential Thermostat | 2/22/2007 |
| Q: I am replaceing my thermostat with a Totaline Signature Part number P374-1100. I have ... A: You are short one wire to install this thermostat. The green connects to G for the indoor fan, the ... | |
| A/C Vent Leaking | 2/21/2007 |
| Q: However, what is causing the water to collect in the ducts? We close the small ceiling vents in the ... A: The water is formed by condensation in the ducts in the same manner as a cold glass develops it on ... | |
| boiler problem | 2/21/2007 |
| Q: We have a gas hot water boiler. It is making a loud buzzing noise right before it kicks on. The ... A: I do not believe the valve would make this noise, although it is opened by an electric solenoid. It ... | |
| A/C Vent Leaking | 2/19/2007 |
| Q: Hoping you can help. My parents moved in to a new home (new construction) 1 1/2 years ago. The air ... A: The ducts are not sealed. There has to be open connections in the ducts, either at the fan section, ... | |
| heating and air | 2/17/2007 |
| Q: Trying to convert 20X20 garage into family room. No windows. How can we get heating and cooling. ... A: The area is too large for a through the wall unit, but almost too small for a separate unit. If you ... | |
| Heat from Forced Hot Air System barely warm | 2/17/2007 |
| Q: J. Cook I am living in a recently purchased older home with a Rheem Classic XI Heat Pump/Rheem Model ... A: If you are used to fuel heat, a heat pump will feel very cool as the air temperature is generally in ... | |
| furnace | 2/16/2007 |
| Q: I had a high effeciency furnace installed. After discussions with friends this is what I concluded. ... A: If the furnace exhaust is just a straight pipe with no end of any kind, I agree, there needs to be a ... | |
| A/C | 2/16/2007 |
| Q: How can you tell a compressor has shorted out? What is the standard color code for wires on a ... A: 1. With the power off and the compressor wires totally disconnected, using an ohm meter you check ... | |
| RHEEM CRITERION 2 RGPH SERIES | 2/15/2007 |
| Q: MY FURNACE HAS HAD A IGNITION COMPUTER BOARD AND PLENUM THERMOSTAT REPLACED. THE FURNACE GUY TOLD ... A: I am not familiar with this particular furnace and what this code means. It sounds like you may need ... | |
| water heater | 2/15/2007 |
| Q: How can our water heater in the garage is always heating even nobody use hot water ---makes some ... A: A typical residential water heater has two heater elements. It will cycle these two elements in ... | |
| heat not working | 2/14/2007 |
| Q: I hear what I believe is my blower in the house working, but nothing is coming out of the vents and ... A: The blower would be what sends air out of the vents, so either this unit has a belt driven blower ... | |
| relay woes | 2/13/2007 |
| Q: I have a 2 ton pancake split. For some reason the compressor relay gets stuck and i wind up with a ... A: There are several things to check. First, be sure the coil and relay voltages and amp ratings are ... | |
| hot water heat | 2/10/2007 |
| Q: I have hot water boiler with baseboard heat. I am having noises of running water (should like a ... A: There should be a water line connected to the boiler to maintain a specific water level. Be sure if ... | |
| Heat Pump | 2/9/2007 |
| Q: I have two questions about my new heat pump. First question is about the low temperature that my ... A: Your contractor is correct. The outdoor unit is actually saving power in defrost mode because the ... | |
| Hydronic Baseboard heat system | 2/7/2007 |
| Q: I have a hydronic baseboard heating system it was working fine a few months ago but now none of the ... A: It is common for a system to get air in it that will prevent the water from rising to the upper ... | |
| RPJII | 2/7/2007 |
| Q: I have the same problem as J Cook. That is, the heater will turn on but when the blower turns on the ... A: Actually I am J Cook, and I hope a technician was not blowing smoke. There is a device similar to a ... | |
| heater not working | 2/6/2007 |
| Q: I have a rheem 80 imperial furnace. It will come on and work fine but before it warms the house it ... A: It is tripping off on a some safety. Turning the power off and back on resets it. It may be a ... | |
| odors in HVAC | 2/4/2007 |
| Q: An HVAC company has come to my house and determined the smell in my systems are coming from the ... A: If the problem is caused by the difference in temperature of the two coils, I do not see how ... | |
| old carrer electric heat | 2/4/2007 |
| Q: I need to rewire my electric hvac heater control. the unit has 4 5kw heat strips. two are wired to ... A: The first thing to determine in selecting the correct replacement parts is to know the size heat ... | |
| HVAC question (heat pump) | 2/2/2007 |
| Q: The blast of cold air I was referring to is when the system comes on and when in defrost mode, does ... A: I agree the strips should be tested, there should be no change when in defrost mode. I do not have a ... | |
| HVAC question (heat pump) | 2/1/2007 |
| Q: I have a York heat pump which has served me well for over ten years, my quesiton is when the system ... A: Refrigerant never looses is effectiveness, that is why there is a ban on several refrigerants as ... | |
| UV Fillter or UV light for Furnace | 1/31/2007 |
| Q: I am in the process of looking at a UV-C lamp system for my furnace. Do you know anything about ... A: From all of the research I have done and the classes in which this has been discussed, these devices ... | |
| odors in HVAC | 1/29/2007 |
| Q: I have a massive problem with odor from my HVAC exterior heat pump. An environmental engineer has ... A: I live in Mt Pleasant, about 20 miles from Charlotte. I just installed two Goodman's in my home and ... | |
| thermostat sensor (possibly?) having trouble | 1/27/2007 |
| Q: I have a gas powered furnace that is approx 13 years old. I have never serviced it in the 6 years I ... A: An unserviced furnace can be very dangerous. I always recommend having it inspected for problems at ... | |
| Oil Furnace -- too much smoke? | 1/27/2007 |
| Q: But you didn't answer my most important question.....how much white smoke is too much white smoke? ... A: There is no way to answer this. It all depends on how much fuel is being consumed. You may have a ... | |
| Oil Furnace -- too much smoke? | 1/26/2007 |
| Q: This is actually a 2-part question, the first part being much more important than the second. So, ... A: Even not knowing the exact system you have, it makes sense not to get as hot of water when the unit ... | |
| no power to unit ac/heat electric heat pump | 1/24/2007 |
| Q: I have no power to my unit...it was on on emergency heat, for 3 weeks, because thats the only way ... A: The thermostat gets power from the indoor fan section. Check at the fan section to see if there is ... | |
| carrier furnace model 58pav | 1/19/2007 |
| Q: the burner shuts off showing led code 33 flame roll-out switch.first off,where is this roll-out ... A: Anytime a safety shuts the burners off, it needs to be inspected. The roll out switch is usually at ... | |
| York Heatpump / York air handler | 1/17/2007 |
| Q: The entire outside unit will not energize at all for heat or A/C. It will start up if I manually ... A: While the jumper is on from Y to R, check the outside contactor coil points to see if you have 24 ... | |
| Thermostat installation in residence | 1/16/2007 |
| Q: Mr. Cook, thank you for your time. I have a Payne 373LAV Downflow gas induced combustion furnace and ... A: Since there appears to be no common terminal, leave the brown wire disconnected, nut it off. As on ... | |
| BTU's required to heat a room | 1/15/2007 |
| Q: I am heating my garage and it is 24x24. I have insulated walls and ceiling. The ceiling is 8'. How ... A: It requires a much more detailed load calculation. What are the floors made of, how much insulation ... | |
| HVAC Noise | 1/11/2007 |
| Q: My central heating unit is set on 72, and on automatic to maintain it at 72. After the unit comes ... A: This may be a fan bearing as the fan is coming to a stop. See if you can turn the fan to on and back ... | |
| fumes as a result of replacment heat exchnger | 1/10/2007 |
| Q: A heat exchanger was just replced at my place of employment there is a loy of smoke and fumes in the ... A: Without knowing exactly what is burning, I can not say. The exchanger during manufacturing process ... | |
| Lennox Furnace | 1/8/2007 |
| Q: This unit has a standing pilot. Thanks. JerryHello, I'm working on a very old lennox forced air ... A: Has the thermocouple been replaced? It is the metal stem device that the pilot flames is burning ... | |
| Heat Pump sizing. | 1/6/2007 |
| Q: My home is about 1900 square feet, in Phoenix, AZ. Last year, our heat pump broke down and we had ... A: I am heating and cooling 1900 sq ft with a two ton heat pump. My home is very tight however with ... | |
| heatpump problem | 1/4/2007 |
| Q: during defrost cycle cold air blows out vents in house while heat strips are on .heat strips works ... A: It sounds as though part of the defrost circuit board has failed. It is cycling the unit into a ... | |
| air conditioner condensation | 12/31/2006 |
| Q: I have central air in the ceiling and have water stains around the vents. The air unit is in the ... A: I know you seem to have inspected the ducts already, but if you are getting cold air, there is an ... | |
| Perimeter Register Box Ducting | 12/31/2006 |
| Q: I have a 2 story home built on slab that has perimeter register boxes on the floor upstairs and in ... A: Ty, before installing a duct that causes a problem in the existing space and also will not make the ... | |
| York heatpump no ac power | 12/28/2006 |
| Q: I am getting a "no ac power" code at my thermostat. York heatpump. The house fan continues to run ... A: With the multiple problems this unit is indicating, it sounds like the circuit board in the indoor ... | |
| furnace keeps cutting off after 5 or 10 min. | 12/21/2006 |
| Q: how are you today? I'm having a problem I have had my furnace looked at about 3 or 4 times and have ... A: Doing great Cleo, hope you are. When the unit is on, is the fan operating or are just the burners ... | |
| Cooling Red wine and white wine | 12/21/2006 |
| Q: My boss wants me to design the red wine and white wine cabinet with two FCUs at the top of cabinet ... A: There is no load associated with an object that does not produce heat. Any object placed in the ... | |
| Bad Smell | 12/20/2006 |
| Q: Here's my question. We live in Charlotte, NC. On those days when the weather fluctuates to the ... A: There are a number of things that can cause this. One is a dirty indoor coil. The condensate water ... | |
| Stem Heater | 12/18/2006 |
| Q: Okay, I have installed a new shut off valve and new vent valve, removed and drained the steam heater ... A: There is either a clog in the lines, a faulty valve at the affected heater, or there is still air in ... | |
| Trane XE 80- trouble lighting | 12/16/2006 |
| Q: HELP- we have a Trane XE 80 bought & installed in 1995. We have been in the house last 7 years, ... A: There is a safety shutting the burners down either due to a failed safety, or it is working as it ... | |
| Have to flip switch several times to get blower to come on | 12/16/2006 |
| Q: I have an older Amana Air Command furnace which was in the house when I bought it five years ago. ... A: There is a relay or circuit board that controls the fan in heat mode. Try turning the system switch ... | |
| Circuit Board replacement | 12/14/2006 |
| Q: and is blowing neither hot nor cold air. He looked at it, said the circuuit board needed replacing, ... A: If you turn the power off on the unit, write down all the wiring connections, a circuit board is one ... | |
| HVAC blows cool air .... | 12/13/2006 |
| Q: Please help. We recently bought this house. The furnace or the HAVC system is only about 1+ year ... A: From the sound of it, I would say this is a heat pump. If you are used to fuel heat, the air does ... | |
| Lennox 80UHG HVA/C blower motor | 12/13/2006 |
| Q: I have been sold an A O Smith (AOSEPC) product code HE3J283N motor as a replacement for an Emerson ... A: I really can not know all of the circuit boards as there are hundreds. What you will need to do is ... | |
| new packaged HVAC | 12/12/2006 |
| Q: We moved into our house in October of 2005. We immediately had problems with the Payne packaged unit ... A: I admire you for doing all the research in advance. I agree its time to get rid of the albotros. ... | |
| heat pump | 12/12/2006 |
| Q: working on a 14 ton 2 stage heat 2 cool.both compressors run fine in cool,but in heat 2nd stage ... A: I agree, it sounds like a restriction. I would test the check valves first at the TXV. In heat mode, ... | |
| american standard 5000 furnace problems | 12/11/2006 |
| Q: the furnace will run but sometimes when the furnace goes to kick on, the motor will start up, but ... A: All of these functions are controlled by the circuit board. I would replace it before a new furnace. ... | |
| thermostat wiring for heat pump | 12/10/2006 |
| Q: I have an American Standard heat pump with aux heat and AC made in 1992. I purchased a digital ... A: You most likely do not have an outdoor thermostat or thermistor as these are optional devices and ... | |
| Central unit freezing | 12/8/2006 |
| Q: We bought a new house a year ago in October with a Rheem central heat and air unit. By winter time ... A: Since the actual components of the system are operating, there is nothing you could do yourself. It ... | |
| Air Conditioning Supply's are dripping | 12/7/2006 |
| Q: I am a General Contractor building an addition for a home owner. We have finished and are currently ... A: It is as suspected an insulation problem with the ducts. It may be there are joints that are not ... | |
| Thermostat Wiring | 12/6/2006 |
| Q: I installed a digital thermostat over the summer and everything seemed to work fine at the time. ... A: I could not pull up the picture to start with, but I was able to get it and I see there is an O ... | |
| inside | 12/4/2006 |
| Q: I would appreciate it if you can help me fix my issue. I have a Carrier furnace model 58STA070. ... A: I am not sure of this error, but the error codes should be on the inside panel of the fan section. ... | |
| Furnace filters | 12/4/2006 |
| Q: I need to verify the proper location and size of the filter for a Heil SP80 furnace. None of the ... A: The filters seem to be in the supply side, if they are in the duct that is on top of the fan ... | |
| Furnace Carrier 395B | 12/3/2006 |
| Q: My Carrier 395B starts acting up... When the heating cycle is on, everything starts to operate ... A: You need to have a technician do a thorough inspection. It sounds like it is cycling on a ... | |
| a/c | 12/3/2006 |
| Q: I recently had the electrical service in my house changed from 40amp to 200amp. Both inside fuse ... A: It is difficult to locate a thermostat diagram. The blue wire was a spare wire not being used. Every ... | |
| Air Conditioner freezes on heating | 12/2/2006 |
| Q: I have a 12000 BTU split type Air Conditioner that doesn't work on heating mode. When Cooling, ... A: It sounds like either the circuit board has gone haywire, or the fan relay is damaged, but most unit ... | |
| Brand new AC pumps warm and humid air | 12/2/2006 |
| Q: I have installed a brand new AC. 5tn for compressor and air handler. The outside unit has two ... A: To start, if more return was added, it seems obvious the system was installed incorrectly to begin ... | |
| Heil AC/Heating unit | 12/1/2006 |
| Q: my problem is when the weather gets pretty cold. my outside unit kicks on then right back off. the ... A: It sounds like the unit charge is low shutting the unit down. Not locating and repairing the leak ... | |
| Payne furnace blower will not start | 12/1/2006 |
| Q: I have an older Payne pilot light natural gas furnace AC. It got cold 3 days ago and we used it for ... A: This is a good one because there is some sort of control, either heat activated which would be a ... | |
| Domestic Hot Water - Forced Air Heating | 11/30/2006 |
| Q: I have a condo apartment which is heated via the hot water heater (hot water circulated to a heat ... A: A system that uses water as the heat source, whether steam or hot water is a Hydronic Heating ... | |
| Bryant plus 80 gas furnace trouble codes | 11/30/2006 |
| Q: I have a Bryant plus 80 gas furnace in my house that is about 8 years old. A couple of days ago it ... A: I am not familiar with the codes on this model, but on any unit with the circuit board with codes, ... | |
| refrigerator problems | 11/29/2006 |
| Q: my freezer works,but not my refrigerator A: A residential refrigerator mechanically is actually only a freezer. All of the refrigeration is in ... | |
| loud squeeky noise from home heater | 11/29/2006 |
| Q: We own a Payne gas heater Model No: SX345NSOX-2. It has started making a very loud squeeky sound ... A: The blower motor has bearings and will begin making this noise if the bearings are beginning to ... | |
| transformer | 11/28/2006 |
| Q: how do you wire up a transformer(24volt) to step down a 240 A: Most transformers are multitap. In other words, they can be connected to a variety of voltages to ... | |
| Combustion blower on & off | 11/21/2006 |
| Q: I have a Heil DC90 and the combustion blower turns on & off every three seconds or so. I have ... A: There should only be two wires on the pressure switch. Use a jumper to connect them together and see ... | |
| Refgrigerator | 11/21/2006 |
| Q: however,the fan is working. I turned the dial in the refrigerator section, which is on the max(9). ... A: Water could have drained into the vent and frozen where it exits the freezer section. If you can ... | |
| Heating problem | 11/20/2006 |
| Q: When I turn the heat on the pilot will light , the blower will come on, and then after about a ... A: Either a defective safety, or worst case a cracked heat exchanger. This is indicated as the blower ... | |
| kenmore side by side fridge 596.58642890 | 11/19/2006 |
| Q: I have a 6 year old Kenmore 596.58642890 (model number) side-by-side fridge. The fridge no longer ... A: The most likely culprit is the water solenoid valve. It will have two wires connected to it and the ... | |
| furnace problem | 11/18/2006 |
| Q: My furnace ignitor will light up, then the flames come on and then when the blower starts the flames ... A: This could be a number of things, but not the thermostat. It could be a faulty safety, but the worst ... | |
| Refgrigerator | 11/16/2006 |
| Q: The refrigerator is not staying cold. The freezer continues to work, although there seems to be a ... A: Some residential units have a fan to assist the air flow from the freezer into the refrigerator. Can ... | |
| Dunkirk furnace - pilot problem | 11/16/2006 |
| Q: I have a Lennox (Dunkirk) gas furnace, Model GWB8-140S, with a Standing Pilot Light. The Pilot Light ... A: The thermal couple is usually the culprit. It may also be either a gas valve failing, or there is ... | |
| Chronotherm III function | 11/15/2006 |
| Q: I have a Chronotherm III thermostat in a new house we moved into. I'm using the conventional ... A: This is normal. If it operated soley on its program, depending on how hot or cold and the mode ... | |
| Shower | 11/14/2006 |
| Q: I have low mains water pressure. I have a pump for my shower which used to work with a solenoid ... A: I do not like to respond with the option of this being directed to another expert. I try to respond ... | |
| mobile home central heating unit | 11/14/2006 |
| Q: The heating elements come on and when the fan comes on the elements go off and very little air is ... A: It sounds like due to low air flow the heaters are shutting down. Can you put the fan in the on ... | |
| Arcoaire RPJII | 11/13/2006 |
| Q: I hope you can help me. It's cold in here. My Arcoaire RPJ2 funace draft motor , I think thats what ... A: This unit needs to be totally checked. This is an indication the heat exchanger may be cracked ... | |
| kenmore frieezer cooling problem | 11/13/2006 |
| Q: I have a 2000 Kenmore side by side freezer/refrigerator. Since yesterday, the freezer temp. is ... A: A combination refrigerator freezer is actually only a freezer. All of the refrigeration is in the ... | |
| Rheem indoor/outdoor Heat pump | 11/12/2006 |
| Q: I have a Rheem heat pump (Heat/AC). The outdoor unit frequently trips and I have to press the reset ... A: I admire someone desiring to learn in an unfamiliar field. I will assist all I can. I am not ... | |
| Odor during AC mode of heat pump | 11/11/2006 |
| Q: We had our heatpump in the heat mode for several weeks and switched it back to the a/c mode with ... A: Sometimes the coil will have a bacteria growing on it that activates when the water from ... | |
| Cold Floors | 11/10/2006 |
| Q: I live in South Carolina in a 1 year old home. The Forced air vents are all in the ceiling and the ... A: The least expensive option would be to install a ceiling fan and set the direction of the fan to ... | |
| System Compatability | 11/9/2006 |
| Q: Mr. Cook. Recently the church I attend has been having trouble with it's heat and air. To begin ... A: The only thing the code addresses as far as replacement units is the units have to be matched. In ... | |
| Lennox direct vent gas fireplace | 11/8/2006 |
| Q: Sometimes when I turn on my fireplace, it lights then the flame turns blue and goes out. It is about ... A: This could be a multitude of problems. At this age, it is time to have the unit serviced. The gas ... | |
| A/C Motor | 11/8/2006 |
| Q: I have a rather old Lenox blower in my attic. Today when the A/C kicked on the blower motor started, ... A: The first thing I would try is a new capacitor. It looks like a small can, either round or oval and ... | |
| Thermostat problems with gas floor heater | 11/6/2006 |
| Q: I have an old Montgomery Ward Gas Floor unit (1967). The trouble is that every thermostat that I ... A: I appologize for the misunderstanding. There should have been an option for a follow up question. ... | |
| BRYANT HEAT PUMP | 11/5/2006 |
| Q: I HAVE A 3.5 TON BRANT HEAT PUMP(14SEER PURON).HAD COMPRESSOR REPLACED.AFTER THE WORK WAS DONE UNIT ... A: First, it is very unlikely you have a txv, almost every residential unit uses a piston. It seems to ... | |
| cold air from duct when in heat mode | 11/4/2006 |
| Q: Sorry for a second question so quickly, but I have a brief question regarding the Heat Pump ... A: It is very common for heat pump air to feel cool to the touch. Since body temperature is 96 degrees, ... | |
| Leak in line set | 11/3/2006 |
| Q: I had the installer come out and he told me it needed refrigerant which he added and charged me for. ... A: I just purchased and replaced my heat pumps. The instruction manual with my unit gave detailed ... | |
| Freon migration | 11/2/2006 |
| Q: Last year (July 2005) I replaced my outside AC unit with an Amana 5 ton unit. Last fall (I live in ... A: It will cause compressor failure eventually. The compressor should have had a heater, it apparently ... | |
| New construction in North CArolina | 11/1/2006 |
| Q: I am building a 3000 sqft, 2-story in eastern NC....high humidity...high corrosion...."Extremely" ... A: As a matter of fact, I have a 100 year old home. I have also extremely insulated with the walls, ... | |
| replacing old Honeywell thermostat with Noma | 11/1/2006 |
| Q: There are only 5 wirings (G,Y, W, R and Rc) in the old thermostat. In the new one there is no R ... A: The old thermostat will not have a common terminal. The R terminal is one side of the 24 volts, the ... | |
| A/C Vent Placement / 2 zone A/C - Heating | 10/31/2006 |
| Q: I am currently having A/C & Heating installed in an older home (1,400 sq ft). The vents will be ... A: Residential zoning is becoming more common that a few years ago. It requires a simple damper set up ... | |
| replacing old Honeywell thermostat with Noma | 10/31/2006 |
| Q: I replaced our old Honeywell thermostat with the Noma 7-day programmable. There are 5 wirings in ... A: You do not have both legs of the 24 volts. It is required in order to operate a programmable, it was ... | |
| thermostat | 10/31/2006 |
| Q: I have an old gas furnace with water filled radiators. The thermostat is a honeywell, the round dial ... A: It is not difficult, but you will need one more wire than the current stat uses. See if the cable ... | |
| Split Level House HVAC | 10/25/2006 |
| Q: We have a 40 year old split level house with a new Rheem 80% 100,000 BTU natural gas furnace. Due to ... A: I have two heat pumps, both are 16 years old with the original motors. These new motors virtually ... | |
| compressor | 10/25/2006 |
| Q: what is a semi hermetic compressor? what is a open compressor? what is the pinch off tube used for? ... A: A hermetic compressor of any type uses a piston for compression. An open compressor needs ... | |
| CONVERTING ELECTRIC TO GAS | 10/18/2006 |
| Q: WHAT WOULD AN AVERAGE COST BE TO CONVERT ELECTRIC HEAT TO GAS HEAT? THE HOME IS 2300 SQ FEET, IS ... A: If you are talking about coverting from an electric furnace to gas, I would say it would be ... | |
| furnace venting | 10/18/2006 |
| Q: I've read that high efficiency condenser furnaces can be vented directly outside using PVC but do ... A: Venting is a somewhat scientific process. A contractor needs to determine the BTU's of the furnace ... | |
| AIR CONDITIONER WHISTLING | 10/17/2006 |
| Q: PLEASE HELP. WE HAVE HAD SEARS OUT HERE TO CORRECT AIR CONDITONER/FURNACE PROBLEMS. FIRST IT IS A ... A: It has to either be a section of ductwork that has a fitting causing the sound, or a vent itself. If ... | |
| Overtemperature switch keeps tripping on my Rheem 90 plus | 10/17/2006 |
| Q: I have read some of your replys and the nearest one to my problem deals with intermittant heater ... A: You have to almost totally disassemble a unit to see the entire heat exchanger to verify if there ... | |
| furnace question | 10/16/2006 |
| Q: I have a comfortmaker furnace. When the heat kicks on, it will run for a few minutes then the fan ... A: The fan control is out of adjustment. The fan energizes after the heat exchanger reaches a certain ... | |
| power to thermostat | 10/15/2006 |
| Q: thermostat seems to have no power coming to it to turn heater/AC unit on. no circuit breakers seem ... A: Turn off power to the indoor fan section. The low voltage transformer is in this section. Locate the ... | |
| Heat Pumps-Turn Down the Stat? | 10/15/2006 |
| Q: We have recently built a home that has a heat pump. We are used to turning down the stat at night ... A: I just discussed this today with the Police Chief in a new $14 million dollar facility that opened ... | |
| Trane YCC Gas Pack Unit Not Igniting... | 10/14/2006 |
| Q: I have a Trane YCC024 unit, and it has worked fine until now. The blower comes on but no heat. I ... A: It would be too expensive to experiment. Either the control board that signals the valve to open for ... | |
| furnace will not kick on | 10/14/2006 |
| Q: we live in a home with a electric coleman furnace. the furnace will not operate unless i rub the ... A: When you remove the wire and then reconnect it, you are resetting a safety somewhere in the unit and ... | |
| AC Blower runs with unit off - Fan in auto | 10/14/2006 |
| Q: When I turn of my unit from the thermostat the fan continues to run. The fan is in the auto ... A: Most likely the fan relay is stuck, or if you have fuel heat, the fan thermostat. You can trace the ... | |
| heating system | 10/13/2006 |
| Q: Last year, I installed a new heating system in my home. It's a UTICA boiler which operates on ... A: I think $500 would be worth the investment. The radiators that are not getting hot has to be in that ... | |
| New Heat-pump system wiring ? | 10/13/2006 |
| Q: I have a new Goodman 5 ton heatpump, new air handler and honeywell TH8320U thermostat. My son is ... A: The blue wire is correct, this is the second leg of 24 volt power and the reason it is not needed on ... | |
| flushing a hot water furnace | 10/12/2006 |
| Q: How do you flush the water in the circulating pipes of the hot water furnace (gas)? A: The boiler must be cold to prevent damage. There will be a drain at the boiler. Shut off the ... | |
| wm boiler water not flowing no heat | 10/12/2006 |
| Q: i have a weil mclain boiler.When i turn it on pipe coming from boiler gets hot but doesnt make it ... A: If this is a hot water vs a steam boiler, the circulation pump needs to be checked to see if it is ... | |
| TRANE air conditioner, does it need replaced | 10/11/2006 |
| Q: Mr. Cook- Hello & Help! I have a Trane a/c that started kicking the breaker at the end of summer. ... A: The next thing I would do is replace the compressor contactor and this breaker that has been ... | |
| brant heatpump fan | 10/11/2006 |
| Q: both inside and outside were icing, only inside fan running slow during a/c cycle. emerg heat comes ... A: A slow inside fan will cause icing in a/c mode. The fan may be wired incorrectly to the relay, it ... | |
| Outside Fan | 10/10/2006 |
| Q: I installed a new thermostat. I also went ahead and installed a new connector. The minute I turned ... A: I am not sure what you mean by a new connector, but it sounds like some control wire is incorrect ... | |
| Outside Fan | 10/10/2006 |
| Q: I recently turned on the heat on my Rheem Heat Pump on a cool night. now when I turn the air back ... A: The outdoor unit is on a different circuit than the indoor unit. Make sure the breaker feeding the ... | |
| Lennox HVAC Desert Unit 2 years old has a mind of its own | 10/8/2006 |
| Q: I had a Lennox HVAC unit installed on my house 2 years ago August. The unit has worked fine until ... A: I would say it is a short somewhere in the control wiring. Inspect the wiring all the way to the ... | |
| Residential HVAC Fan | 10/7/2006 |
| Q: Mr. Cook, My family and I recently purchased our home. The home has two HVAC units. The fan on ... A: Check the thermostat wiring first. The green wire or the G wire on the sub base is the fan circuit, ... | |
| a/c | 10/6/2006 |
| Q: How would i get the water to drain from a condensate line and what causes it. A: First the drain must have a constant downhill slope. The water is from the evaporation in the fan ... | |
| Builtin AC return pipe smaller in diameterpipe | 10/6/2006 |
| Q: The house did not have AC before atall. The house is 2700 sqft two story. The contractor says I need ... A: A 3/4 line is not large enough for a 5 ton unit. The compressor will eventually fail due to lack of ... | |
| Bryant Heat Pump | 10/5/2006 |
| Q: I purchased a new home with a Bryant 10 Seer-Model 661C heating/ac unit. As soon as the ... A: I would be certain it has damaged the unit to some degree. I would talk to the service manager at ... | |
| water falling off condensor but not into drip pan | 10/3/2006 |
| Q: Inside our AC unit Bryant the part with the coils in the water is not flowing down the underside ... A: In some cases the fan is not on high speed allowing the water to fall from the coil. Also the unit ... | |
| 13 Seer Heat Pump for old inside unit | 9/24/2006 |
| Q: I need a new heat pump to mate to the old inside unit. Originally 20 years ago - all were Snyder ... A: In order to upsize the outdoor unit, the indoor would have to be upsized or the refrigeration system ... | |
| Ice | 9/24/2006 |
| Q: When we came home tonight, our house was 78 degrees. My husband noticed that NO air was circulating ... A: When you turn the fan from auto to on, at the same time you have to turn off the system switch or ... | |
| FURNACE CARRIER | 9/23/2006 |
| Q: UNIT; AC,-HEAT.- 119,000BTU- carrier,/ thermostat new,// air,con. works fine/furnace won"t ... A: Try replacing the thermocouple. This is the device that the flame is burning against, like a small ... | |
| Residential central air | 9/23/2006 |
| Q: My husband and I want to move our central air unit approximately 10 feet from its present location. ... A: The electrical will be no problem, however when you cut the lines, you will be dumping the ... | |
| Condense motor wiring | 9/23/2006 |
| Q: I had old OEM condenser fan motor 1/3HP which had 3 wires Brown on 3-terminal CAP (F), Red ... A: First, be sure you have a new capacitor, never replace a motor without the capacitor also being ... | |
| AC Compressor cover | 9/22/2006 |
| Q: Good day, I have an older York AC compressor(Model number: H1CH036S06A). I recently replaced the ... A: First, do not use a tarp. A tarp will hold moisture under it and cause more rust than using nothing. ... | |
| To Lube or Not to Lube? | 9/21/2006 |
| Q: I have a Carrier 58PAV upflow model that was brand new in 1997. I would like to know whether or not ... A: A unit this new should require no lubrication. I have three Carrier units that are now 15 years old ... | |
| Blower motor on a/c starts and stops. | 9/21/2006 |
| Q: I have a coleman central a/c and when i turn on the a/c the blower motor starts and runs at a low ... A: With a new motor, you always install a new capacitor, so I would try the capacitor first. If this ... | |
| wiring 24v thermostat | 9/21/2006 |
| Q: I am trying to wire my new 24v thermostat but do not have the common wire that is necessary to power ... A: Are you replacing an existing thermostat? If so, the components to the fan section and compressor ... | |
| Grinding noise from Compressor | 9/20/2006 |
| Q: I have a 2001 Rheem AC (I think it is considered a split unit, AC in garage, fan/compressor in ... A: It is rare that a compressor will be making this noise. You can listen closely to the unit as the ... | |
| spilt home a/c | 9/20/2006 |
| Q: The compressor does make louder noise now and had it checked by 3 diferent teck's.I would like to ... A: The problem with a replacement compressor is the warranty. Usually the most is a one year warranty, ... | |
| Heat Pump Filters | 9/20/2006 |
| Q: I am getting ready to move into a new construction site-built home. The home has a heat pump w/AC ... A: You are exactly correct. It is obvious the person was not very up on filters when he had never heard ... | |
| thermostat control wiring | 9/19/2006 |
| Q: I installed a outdoor woodstove water heating unit. We installed a heat exchanger coil inline of the ... A: You can install an inexpensive Honeywell heat only mechanical thermostat, the older models were all ... | |
| central air conditioning | 9/19/2006 |
| Q: I have a Goodman residential aiconditioning unit. A few days ago it stop working. It is 5 years old. ... A: With the power off, check the compressor electrical terminals. If they are good and the wiring ... | |
| Chronotherm III | 9/18/2006 |
| Q: We used to have a Chronotherm 3 (honeywell) thermostat for our AC/Heating unit--we loved its ... A: This may be more information than requested, but since you asked about the C terminal, I will give ... | |
| A coil freon leak | 9/18/2006 |
| Q: I changed from a 3 ton Carrier matched unit to a 3.5 ton Ducane unit and a universal 3.0-3.5 ton a ... A: This is why it is against mechanical code to mismatch equipment. All equipment is engineered to ... | |
| HOME HOT WATER RADIATOR HEATING SYSTEM | 9/15/2006 |
| Q: I HAVE A NATURAL GAS HOME BOILER THAT HEATS WATER FILLED RADIATORS THROUGH OUT THE HOUSE. I TURNED ... A: A new boiler system will have different piping arrangements as you can imagine, but replacement is ... | |
| A/C not cooling the house. | 9/14/2006 |
| Q: We have two Tempstar A/C units. The one for upstairs is working. The down stairs unit is blowing air ... A: The pressures are not correct if the compressor is running. It may be a low refrigerant charge which ... | |
| Air conditioner capacitor | 9/13/2006 |
| Q: J Cook: Would the capacitor be considered part of the condenser on an air conditioner unit? My ... A: The indoor motor and the outdoor motor have separate capacitors, so it depends on which motor was ... | |
| Trane A/C | 9/8/2006 |
| Q: J.~ Well, the A/C installer just left one more time and this is what transpired: Trane Customer ... A: It still sounds like a lot of smoke blowing going on. I think my question to him at this point would ... | |
| Trane A/C | 9/8/2006 |
| Q: Good Morning, J.~ We were without any A/C last night. Not pleasant, but thankfully we aren't ... A: Based on the existing ductwork and filter size, it most likely had about a 3 ton unit originally. ... | |
| HVAC relocation | 9/7/2006 |
| Q: My house has central ac with the compressor outside and the evap coil in the attic. The house is 2 ... A: It will not affect the system at all, go for it. I did the same thing for my upstairs unit, a ... | |
| Central Air | 9/6/2006 |
| Q: I live in a condo and my central air unit ( the big box thing) is outside. Very close to the unit ... A: I think you have located the culprit. Very few systems have a good sealed duct system, and it is ... | |
| Trane A/C | 9/6/2006 |
| Q: No additional returns were added. I believe it is a single return--only one filter to change. The ... A: That was exactly what I suspected. A system return is rated at the minimum of 200 sq inches per ton. ... | |
| Trane A/C | 9/5/2006 |
| Q: The duct work is from the previous system.Hi again.........the A/C installer just left..........I ... A: That was suspected and more of an indication the unit is oversized for the ductwork. Was any ... | |
| Trane A/C | 9/5/2006 |
| Q: ........the A/C installer just left..........I asked him about the 5 ton unit being too large and ... A: Another reason not to oversize a unit is the larger unit will run for a short time, drop the ... | |
| air handler noise | 9/5/2006 |
| Q: I have a lennox outside unit and also the air handler is lennox.The units work okay but the ... A: There is a likely chance it is the ductwork. When the system comes on, the ductwork gradually ... | |
| Trane A/C | 9/5/2006 |
| Q: Would the fact that a 5 ton unit was installed be reason for the coils to freeze up? I trusted the ... A: Was this a complete system installation including new ductwork? If this was a replacement, my best ... | |
| Trane A/C | 9/4/2006 |
| Q: On July 26, 2006, I had a "Trane 13 seer High efficiency 5 ton condenser & 5 ton Trane 13 seer ... A: Two main reasons a unit will ice up are insufficient air flow, and a low charge. I also question a 5 ... | |
| wiring color | 9/1/2006 |
| Q: i have a bathroom, fan light heater combo unit. the heater motor unit in the bathroom has a black ... A: Without opening the unit to see how they are connected it is difficult to tell. There are some other ... | |
| Payne Heat Pump Compressor Turns Off | 8/31/2006 |
| Q: Why would the compressor only turn off on a Payne Heat Pump Model # PH10JA036E, when the outside ... A: This is an indication the unit is either overcharged, or the outside coil is dirty causing the ... | |
| HVAC thermostat removal for replacement | 8/30/2006 |
| Q: My question is probably relatively simple as HVAC question go but I'm stumped. I bought a new ... A: Most thermostats have three parts. It sounds like you have taken the front cover off, now there are ... | |
| Blower motor? | 8/29/2006 |
| Q: I have 2 York central air conditioning units in my house, one for upstair and one for downstair. ... A: A blower motor for a unit with a furnace will be at least a two and most often a three speed motor. ... | |
| fridge cooling problem | 8/28/2006 |
| Q: We have a Magic Chef (model RB19kA-4A) and it is 14 years in age, all of sudden the fridge part will ... A: All of the actual refrigeration for a residential refrigerator is in the freezer compartment. The ... | |
| boiler heat and air conditioning options | 8/28/2006 |
| Q: I believe my home has a boiler, so there is no duct work in my house, right now we are useing window ... A: Other than having the structure ducted and a central system installed, there are really no other ... | |
| Kenmore side by side fridge. | 8/28/2006 |
| Q: I have a fridge which stopped suddenly. I checked both the fans, Kept it unpluged for 12 hours. The ... A: I would not run this unit any longer before attempting repairs as the compressor is going to fail ... | |
| BDP Model# 513co188fc | 8/27/2006 |
| Q: I am evidently BDP is now Payne AC, but I am trying to find a manual to this older unit. Our home ... A: I would go as high up in the company with this warranty company as is required, including contacting ... | |
| Coleman C/A- Coil Freezing | 8/27/2006 |
| Q: I have a Coleman Central Air system and I noticed that there is no air blowing thru the vents. I ... A: There are two reasons a unit will ice. There is low air flow. Make sure the indoor coil is clean. If ... | |
| refridgerator | 8/27/2006 |
| Q: my 1yr old fridge stopped working, the freezer is still working, but not the bottom portion, ... A: All of the refrigeration of a residential unit is in the freezer. If the freezer is working, there ... | |
| Bumping Noise in A/C Duct | 8/26/2006 |
| Q: My home A/C Central unit has a bumping sound after it shuts down from Cooling or heating. Usually ... A: I have seen this in a number of installations. It is actuallly an installation flaw. The metal duct ... | |
| HVAC | 8/26/2006 |
| Q: I was changing the filters located on the floor of my home the other day and the plastic bag that ... A: It has to be located and removed. If it has not already reached it, it will eventually end at the ... | |
| coleman mach ac | 8/25/2006 |
| Q: We have a coleman mach travel trailer a/c. We last used it Memorial Day and the a/c worked great. We ... A: There are start components that will be the first to check. The compressor will be wired to these ... | |
| Condensor cleaning | 8/25/2006 |
| Q: We have a house that was purchased new in September 2004. In July of 2005 the compressor was ... A: I think it would be rare on this new of a unit for the coil to be so clogged it would cause ... | |
| system operating pressures | 8/25/2006 |
| Q: i have a 4 ton split a/c system. i took pressure readings of 54/230 at 80'F ambient temp is this ... A: The pressures depend on the indoor temperature as well, and also the type of refrigerant in the ... | |
| Weil Mclain boiler won't light | 8/24/2006 |
| Q: I have a Weil Mclain HE II gas boiler. About a year ago, I replaced the control module, and the ... A: I apologize Clint, but it is difficult to be familiar with all controls, and I am not sure on this ... | |
| Trane Heat Pump | 8/24/2006 |
| Q: I have a seer 12 Heat Pump that clunks when it shuts off. This is coming from the compressor. What ... A: I would persue this with the service manager of this company, and also Trane in order to document ... | |
| Return Air | 8/24/2006 |
| Q: I am in the process of selecting an HVAC company to install a system in my new house. One ... A: If cost is not a factor, a return in each room is the ideal installation, although very few are ... | |
| Air condition outside fan unit | 8/24/2006 |
| Q: What could be wrong with our a/c fan? The inside fan comes on. Checked on the outside unit and it ... A: Try replacing the motor capacitor. It looks like a small can, either silver or gray, and round or ... | |
| mixing 10 seer w/a 13 ser spacepak | 8/23/2006 |
| Q: I am replacing my old air conditioner-found a deal on a 10 seer carrier-wondering if I could use ... A: There are several issues. First, it is against mechanical code to mismatch components, and second, ... | |
| Types of A/C installations | 8/23/2006 |
| Q: I am curious why some A/C units are installed on roofs and others are installed on the ground. Why ... A: Convenience and vandalism. It is easier in a commercial application to install on the roof as ... | |
| Portable AC unit issue | 8/23/2006 |
| Q: Mr Cook, I a writing to ask your advice and experiance on my current portable Sunpentown 12000 BTU ... A: It may not have been visible, but a/c by nature produces condensation. The heat from the condenser ... | |
| Cooling garage | 8/7/2006 |
| Q: Cook: We have a three car garage that has three garage doors and a door with access to the deck on ... A: I would install a separate 2 ton heat pump unit. This way you can have heat if you ever wanted it, ... | |
| Center A/C Outside Unit exhaust fan | 8/7/2006 |
| Q: The fan on the outside unit runs for a few minutes and then stops, but the outside unit is still ... A: The first thing to replace would be the motor capacitor. It looks like a small can, either round or ... | |
| Air conditioner compressor wiring | 8/6/2006 |
| Q: I am having a 3-ton 13-seer ac system made by Payne installed by professionals. They don't do the ... A: I would check with the contractor to see if a 30 amp circuit will be enough. I have a 2 ton system ... | |
| Specifications | 8/6/2006 |
| Q: We want to install a standby generator. So I need to know the running and starting energy ... A: A compressor will typically need double the circuit requirements for start up. Most residential ... | |
| Heat Pump /Clicking | 8/6/2006 |
| Q: The contactor is clicking in and out often when system is running. When I connect the red wire at ... A: Make sure the yellow and red wire are tight on the thermostat. The transformer can be eliminated ... | |
| Lennox Furnace | 8/5/2006 |
| Q: I had a Lennox Value 80 furnace and AC installed in 2000. In 2003, three years and two months later, ... A: There are many variables that are a part of a failure. It could have been a power surge, low ... | |
| Thru the wall Air Conditioner | 8/4/2006 |
| Q: Some follow up questions, ----------- Questions on the sleeve side-------------- 1. For the 10" ... A: It is very rare for a unit of this type to have two fan motors. 99% only have one motor and it has ... | |
| Thru the wall Air Conditioner | 8/4/2006 |
| Q: My question is about a friedrich thru the wall Air Conditioner. It is 10k BTU, and it is in a ... A: No problem on the length, you can never give too much information. One of the problems is the ... | |
| Bryant A/C Ststem | 8/4/2006 |
| Q: My Bryant central a/c system is about 6 years old it has been working fine until today. I turned it ... A: Jim, either the reversing valve is stuck, or it is not energizing for cooling, or the defrost ... | |
| Residential AC Unit | 8/3/2006 |
| Q: A new AC unit was recently installed for my house. Within a short while after the AC unit shuts ... A: It is not adjustable and will sound different with some manufacturers. This is the sound of the gas ... | |
| A.C NOT CCOLING HOUSE | 8/3/2006 |
| Q: HOUSE COOL I HAVE HAD THE COMPANY OUT 5 OR 6 TIMES AND THEY TELL ME NOTHING IS WRONG I PUT THE AC ... A: A simple test of a units performance it to use a good thermometer and check the temperature at the ... | |
| No 24 volts to contact switch | 8/2/2006 |
| Q: Yesterday my significant other cut the two wire wich carry the 24 v to the contact switch on the ... A: The yellow and black wires will be connected to the low voltage transformer. Make sure the ... | |
| A/C units-R22 vs R410a(PURON) | 8/2/2006 |
| Q: I am getting ready to have A/C installed and have gotten conflicting opinions from those I have ... A: I am in the process of replacing my units also. R 22 will be availble for enough years to get the ... | |
| Does Freon Leak Sealant work? | 8/2/2006 |
| Q: My 2440sft house have only 1AC unit (capacity unkown). 2years back a tech filled 1.5lb of freon,and ... A: I am not saying this product will not cure the problem, but in 25+ years, I have never used this ... | |
| central air unit. | 8/2/2006 |
| Q: Good evening. My husband and I recently put a central air in our home, and to our dismay, it has ... A: With the given information, I would have to agree. It sounds like a dead compressor. It is highly ... | |
| Condensation on air handler | 8/1/2006 |
| Q: I have a lot of condensation on my air handler. I live in texas so it is hot as @#&& right now. The ... A: Actually Mike, a lot of condensation is a sign the unit is kicking butt. If the condensation is on ... | |
| central air | 8/1/2006 |
| Q: We recently had a unit installed in our home. It is a Trane x13i. Our home has 2400 sq ft. This ... A: I think it is time to call the service manager of the company you have been dealing with and let ... | |
| A/C and Furnace runs same time | 7/31/2006 |
| Q: I had a problem with my A/C unit outside not running, but only the fan in the basement furnace ... A: If the furnace still operated with the white wire disconnect, it sounds as though the heat relay is ... | |
| How to wire the condensation pump into the heat pump | 7/31/2006 |
| Q: I need to hook up a condensation pump and the best way is to wire the pump power line into the heat ... A: The condensate line voltage will not be from the unit, most have a regular cord end that plugs into ... | |
| unit going bad? | 7/31/2006 |
| Q: The church also has a smaller carrier unit that is brand new to help cool and heat the building. The ... A: There may be a couple of issues. A simple test of a systems performance is to check the supply and ... | |
| Central Air - Frozen Coil - Please Help. | 7/30/2006 |
| Q: We have a central air conditioning system......compressor unit outside the house, fan/blower unit in ... A: A froze coil usually indicates a low air flow due to a dirty filter or coil, or a low unit charge. ... | |
| Central A/C Made Bad Noise, Now Not Cooling | 7/30/2006 |
| Q: I have a Zepher (that's all I know about it, sorry!) central a/c which was installed about 10 years ... A: This may have been the outdoor fan motor. The outdoor unit is on a different circuit from the indoor ... | |
| Central Air not cooling adequately | 7/30/2006 |
| Q: The unit is a 20 year old Lennox. The air coming out of the room vents is slightly cool, but ... A: A simple check of a system is to check the temperature of the return air at the return grille, then ... | |
| A/C Unit Outide | 7/29/2006 |
| Q: My A/C unit outside is only making a humming sound. The fan/blade does not spin, however, if I turn ... A: The indoor unit is on a different circuit. I agree, the first thing to try would be a new capacitor ... | |
| Comfortmaker AC not cooling house | 7/29/2006 |
| Q: My air conditioner has been running constantly but does not cool the house. The thermostat is set at ... A: Yes it should. A quick check of a systems performance is a temperature test. Check with an accurate ... | |
| Return Doesn't Pull | 7/28/2006 |
| Q: Many thanks. I agree that we need additional insulation. But, do you think that the air flow could ... A: I am assuming this is not the only return. The return duct needs to be traced from the unit to the ... | |
| Return Doesn't Pull | 7/28/2006 |
| Q: I have one return in the second floor hallway of my two-story 1500-1600 square foot townhome. The ... A: The most common problem is using a single system without elaborate dampers to control two levels of ... | |
| Air Handler Replacement | 7/28/2006 |
| Q: Mr. Cook, I recently had to have my ac system serviced (I have a heat pump). The system stopped ... A: You will most likely not be able to locate a 10 seer coil and it can not be replaced with a ... | |
| Outside A/C unit fan will not shut off | 7/27/2006 |
| Q: We have a very hold central air unit. The fan runs constantly. Turning off the outside circuit ... A: It also sounds to me like the contactor, which is a sort of relay. Turn off power to the outdoor ... | |
| Drip Pan Plug | 7/27/2006 |
| Q: I have an Ac window unit, Ge avp24. When I installed it the drip pan plug was installed. The ... A: First, it is critical the unit is perfectly level. The plug should not be removed. There is an area ... | |
| Old mechanical thermostat to programmable | 7/27/2006 |
| Q: I took it apart and it has green, red, white, and yellow wires attached to the thermostat. There is ... A: Sometimes a spare wire is wrapped around the cable or taped to the cable, this blue wire should not ... | |
| Trane FDT312A1 | 7/27/2006 |
| Q: I have the above referenced model in my classroom. When it was working, outside air would come out ... A: There is a separate motor controlling the air to the inside. Either the compressor and this motor ... | |
| Trane XE1000 A/C | 7/26/2006 |
| Q: See thread below: My follow up question is whether or not the filters are shared by the heating and ... A: I did not answer the original question, but yes the filters would be for heat and a/c. The outdoor ... | |
| My outside AC fan will not turn on | 7/26/2006 |
| Q: My outside AC fan recently stopped working. The condensor is still operating because I can here it ... A: Look carefully at the wiring diagram on the motor itself. The capacitor is not in the circuit the ... | |
| matching indoor coil to outdoor unit? | 7/26/2006 |
| Q: The indoor coil of my AC is leaking R22 and needs to be replaced. The tech advised against ... A: He is correct. As of January of 2006, unit manufacturers are required to produce systems of 13 seer ... | |
| Old mechanical thermostat to programmable | 7/26/2006 |
| Q: I have the old-fashioned round basic Honeywell thermostat for natural gas furnace/electric AC. It ... A: You will need to check the cable feeding the current thermostat and see if there is an unused wire. ... | |
| I cant find the fuse, just a switch. | 7/26/2006 |
| Q: During recent rolling power outages in CA, my breaker would jump and the AC unit ventilator (on the ... A: Either the fan has failed, or it does not have power. If you are not familiar with a volt meter, you ... | |
| New Heat Pump | 7/25/2006 |
| Q: I have a lennox heat pump, 4ton, 16 Seer. I was the state of the art when installed in 1992. The ... A: First, a new compressor will only have a very limited warranty, often only 6 months. A lot of money ... | |
| Programmable thermostat wiring | 7/24/2006 |
| Q: I am replacing a honeywell thermostat with a noma programmable. The old one has wires going to G,Y,W ... A: Every manufacturer for whatever reason likes to identify these terminals differently. The R terminal ... | |
| Air conditioning runs continiously | 7/24/2006 |
| Q: I live in Arizona and rely on my air condition. My air condition is running continuously. I have it ... A: There are very few thermometers that will read exactly the same unless you pay for a very expensive ... | |
| cleaning coil | 7/23/2006 |
| Q: After a costly and time consuming repair from and unsatisfactory technician on a 4 year old res. a/c ... A: Both coils should be cleaned annually. If it is a heat pump, the best time is in the fall before ... | |
| A/C freeze up/ Compressor won't shut off | 7/23/2006 |
| Q: I have a Merit 10ACC Lennox A/C unit that has been freezing up the last couple of days. The air ... A: It sounds like the compressor contactor is stuck. You can verify this by turning off the disconnect ... | |
| Air conditioning problems | 7/23/2006 |
| Q: I noticed last night that my outside unit was louder than usual. When I went outside to check it ... A: Do not use the a/c as it will damage the compressor. Either the outdoor fan motor has broken, or the ... | |
| Condensor Fan wiring | 7/22/2006 |
| Q: I have a 15yr old Rheem AC with a bad condensor motor (Emerson 1/3hp 208-230v 2a 1075rpm - model # ... A: On the old motor, the black or yellow connected to one side of the capacitor and the brown to the ... | |
| Residential AC unit not turning on. | 7/22/2006 |
| Q: J, I have tested the breaker, the removable contact, and the thermostat with an multimeter. ... A: With the outdoor disconnect off, open the outdoor unit and be sure the contactor is working. It will ... | |
| Hot House! | 7/21/2006 |
| Q: I replaced my condenser unit last summer. Granted,l it is slightly (maybe a half ton) too small for ... A: A simple unit test is to use an accurate thermometer, check the return air temperature at the ... | |
| AIR BLOWS COLD/SMELLS BURNT RUBBER | 7/21/2006 |
| Q: we live in a 2 story home w/ 2 outdoor A/C units the one that blows downstairs is blowing cold but ... A: With the power off, the indoor unit panels that can be removed need to be removed and the unit ... | |
| central air condensate drains | 7/20/2006 |
| Q: My a/c condensate drains up in the attic keeps draining to the drip pan once the outside unit shuts ... A: The drain pan is an auxillary device with the drain at an obvious location by code. As you have ... | |
| A/C recharge | 7/20/2006 |
| Q: I have had problems with my system freezing up recently Ihad a tech. come to the house to check it ... A: This unit is far from needing to be replaced. Never allow a technician to add refrigerant to a ... | |
| Dirty indoor coils versus a leak | 7/19/2006 |
| Q: Mr. J. Cook, I have learned a great deal by reading your previous answers. A few people have asked ... A: The difference could very well have been as much as 2 lbs. The problem is the technician added to ... | |
| a/c furnance the right size? | 7/19/2006 |
| Q: I was told my 2.5 ton condensing unit is 3/4 ton undersized, its a 1400 sq. foot house. They counted ... A: Each ton of cooling does require a specific amount of air flow and return, and this may be what this ... | |
| Air Conditioning not cooling like it used to - Don | 7/18/2006 |
| Q: I have a 30 year old AC unit that has worked great for the past 10 years that I have lived in this ... A: It sounds like two problems. First, the unit seems to be overcharged allowing liquid refrigerant to ... | |
| air return | 7/18/2006 |
| Q: I have a Trane XE60 upright gas furnace. It was installed in my 2 floor townhome 15 years ago. The ... A: The filter may not appear dirty, but try installing a new filter, after one month soak it in water ... | |
| A/C Fan | 7/17/2006 |
| Q: Yes the outside fan is the one the cuts off. I think compressor is on, the unit still is making ... A: The first thing I would try is the fan motor capacitor. It looks like a small can, either silver or ... | |
| temp. regulator | 7/13/2006 |
| Q: I have lived in Minnesota and Phoenix, AZ. I moved to Oklahoma City, OK. last July. I am renting a ... A: If I understand correctly, the heat is electric, not a heat pump. This will as you saw cost greatly ... | |
| Lennox Merit 10ACC Compressor | 7/13/2006 |
| Q: My Lennox unit is 2 years old and has probably been used a dowzen times. This summer, when i turned ... A: The duct problem should not have affected the compressor this quickly, in long range it may have. ... | |
| Heil gas pack | 7/13/2006 |
| Q: I have a Heil gas pack unit. It is about 6-1/2 years old. Every summer since we bought it there ... A: Often you can turn the circuit breaker off and back on and it will reset the controls. A word of ... | |
| Central AC | 7/12/2006 |
| Q: Mr. Cook, I have a Central Carrier AC/Heating unit in my 1288 sq. ft. home. We have recently ... A: The main problem is a single unit. It is very difficult to condition two levels with a single unit. ... | |
| Rebuilt compressor for a York CA91-25E | 7/12/2006 |
| Q: I'm hoping that you can help me. I own a furniture store in Colorado that's in a former, origional ... A: I am assuming this large unit served a much larger area than is required to be conditioned now. If ... | |
| Thermostat wiring | 7/12/2006 |
| Q: ------------------------- With the orange wire moved to and joined with yellow the air now works ... A: Look at the thermostat directions and see if there is some sort of jumper or switch to change the ... | |
| 24 volts | 7/12/2006 |
| Q: ok im in a roof top. when i turn on the disconect. it delays then the blower comes on. the blower ... A: You either have a defective board, or there is a safety in the control circuit shutting the unit ... | |
| Thermostat wiring | 7/10/2006 |
| Q: ------------------------- Followup To I have the orange wire connected to the o/b connection. ... A: Some manufacturers energize the reversing valve in cooling, and some in heating. A good item to ... | |
| Wire overheating | 7/10/2006 |
| Q: I have an outside residential A/C unit. Last week my system stop blowing cold air, it only was ... A: This sounds like the capacitor. If this cylinder is silver or gray and has two or three connection ... | |
| Compressor and fan cutting off | 7/9/2006 |
| Q: When the outside temp gets hot the compressor and outside fan motor kick off. If I turn the unit off ... A: It could be several things. First, make sure the outdoor coil is clean. You can use any dish ... | |
| Payne heat pump 13 seer split unit | 7/8/2006 |
| Q: Installed a new 13 seer Payne unit to replace a defective Goodman unit. The Payne unit comes on but ... A: It sounds like it may be a weak transformer not providing enough to pull the contactor in. Check the ... | |
| Problem with my Lennox Air Conditioning System | 7/8/2006 |
| Q: We just bought this house a couple months ago and the home inspection showed the air conditioning ... A: The first thing I would try is replacing the capacitor to the indoor motor. Of course be sure the ... | |
| Thermostat wiring | 7/7/2006 |
| Q: The old one was not programmable. All the wires went to like colored terminals but black this went ... A: Now it may really be complicated. Do you know if the heat pump has the typical electric strip heat ... | |
| Rudd Airconditioner | 7/7/2006 |
| Q: HELP. IT IS OVER 85 DEGREES IN OUR HOME. I CAME HOME TONIGHT TO FIND THE AIRCONDITIONER INSIDE OUR ... A: Sorry for the delay, the site has be unaccessible. The indoor unit is on a different circuit than ... | |
| Thermostat wiring | 7/6/2006 |
| Q: I`am installing a honeywell th8110u therm. on a heatpump.The wires are ... A: Is this a programmable or have a lighted display stat, and was the old one? By the wiring, it looks ... | |
| outside unit noise/no cooling | 7/2/2006 |
| Q: I have a residential AC question. My unit works fine most of the time but has a strange problem: at ... A: The sound most likely is the refrigerant equalizing in the system when the compressor cuts off. ... | |
| Modern HVAC Systems | 7/2/2006 |
| Q: Has any company produced a forced-air heating and A/C system that features quiet and continuous air ... A: Any unit that makes that much air noise was either sized improperly or installed improperly. You can ... | |
| nordyne 5 ton package unit | 7/1/2006 |
| Q: i keep hearing a buzz whenever my unit kicks on coming from my inside fuse box. a electrician said ... A: If the unit was shorting, the breaker would immediately trip. The buzzing is from one of the ... | |
| AC outside unit noise | 6/14/2006 |
| Q: Our outside AC unit is making a loud buzzing noise usually when we come home and turn down the ... A: There is a device in the unit called a contactor. It has brass points that actually make the ... | |
| ES22a Refrigerant | 6/14/2006 |
| Q: I see that I can buy ES22A home A/C refrigerant. I basically know how to charge an A/C system, but ... A: There will be more and more products making the claim it can be added directly to R 22, but until ... | |
| Seer 13 Refrigerant Line Size | 6/14/2006 |
| Q: My second floor ac is about gone (17 years). I'm researching to having it placed. This is what I ... A: R 22 will be available for at least another 20 years, although production is now being scaled back, ... | |
| Filter/ Drier installation | 6/14/2006 |
| Q: I have a Rheem 3 ton heatpump and would like to know where the best location to install a filter/ ... A: Yes you will need a bi directional drier for a heat pump as the refrigerant will reverse depending ... | |
| HVAC system is dead | 6/12/2006 |
| Q: Apologies in advance for the probably incorrect terminology. :-) I went to switch on my A/C today ... A: You may have made a common mistake. If you checked each power leg to ground and read 125 volts, you ... | |
| Heating, Air Conditioning, Fridge, HVAC, Appliance Repair: Possible prob with thermostat | 6/12/2006 |
| Q: I have a 3.5 ton Payne central A/C unit for my 1400sf home. My home is about 30 years old and isn’t ... A: A digital thermostat is not as sensitive as the old mercury bulb type. When the mercury reached ... | |
| a.c. condensate leak | 6/10/2006 |
| Q: The indoor unit of my 10 yr. old Lennox heat pump is dripping condensate from the outside of one of ... A: You can clean the coil with a gallon pump sprayer with a solution of dish detergent. Saturate the ... | |
| ac fan and compressor | 6/10/2006 |
| Q: up front. been reading past advices. very informative. have read about capacitor operating outside ... A: The student is off the hook. The compressor could have died for any number of mechanical reasons, ... | |
| heat pump | 6/9/2006 |
| Q: I have a 100,000 btu gas furnace with a 3 ton ac unit. In reality I could get by with a 80,000 btu ... A: You are exactly correct and to me this would be an ideal system to have the heat pump as primary ... | |
| hvac - compressor not working | 6/8/2006 |
| Q: I am having a problem with my a/c unit. I have replaced the cap and 20amp fuse and the fan on the ... A: On most units the outdoor fan and compressor are powered by the same contactor. Look for the device ... | |
| suction line freezing | 6/8/2006 |
| Q: The suction line on my split air unit is freezing up at the condensor and all the way to the ... A: I need to know what refrigerant is in this system. It sounds like R22. The high pressure is high and ... | |
| air conditioning/humidification | 6/6/2006 |
| Q: That's a good thought, J, and some days it might work. The pattern here seems to go lower temps and ... A: It can get somewhat sophisticated but with an outside vent connected to the return, there is a ... | |
| Heating and air conditioning ducts | 6/6/2006 |
| Q: Our house has ducts embedded in the concrete slab. We recently had the ducts scoped and there is a ... A: John, I have never encountered ducts embedded in concrete, and rather than steer you incorrectly, I ... | |
| wiring heat pump thermostat | 6/6/2006 |
| Q: This is the wiring schematic for my present Bryant thermostat: ... A: R - Red wire, this is one side of the 24 volts. Y1 - Yellow, this is the compressor circuit. W2 - ... | |
| Heil Split HVAC Unit | 6/5/2006 |
| Q: my old outside condenser/compressor unit fan locked up. I think the compressor started making some ... A: There are internal overloads that will cut the compressor off if it gets too hot. They are supposed ... | |
| HVAC thermostat bad? | 6/5/2006 |
| Q: Can I check this at thermostat or only at transformer with a voltmeter? ThanksI have a two year old ... A: If the thermostat is a programmable, it will have both sides of the transformer available and can be ... | |
| cental ac compressor not kicking in | 6/5/2006 |
| Q: Opened unit ,Before i did all that, i noticed a switch on the high pressure side, pushed it and when ... A: That is exactly what this switch is for. The capacitor may have failed. It looks like a small tin ... | |
| low suction pressures | 6/5/2006 |
| Q: recently installed a new 5 ton hvac system. can not get suction pressure above 61 lbs. did a ... A: The pressures will equalize in the system after shut down unless there is a solenoid valve in the ... | |
| HVAC thermostat bad? | 6/4/2006 |
| Q: I have a two year old Carrier HVAC unit including thermostat.It has been running fine until...I ... A: All Carrier furnaces that I have seen do have a kill switch that shuts the unit down when the panel ... | |
| HVAC Fan Always On, Cant Shut it Off | 6/4/2006 |
| Q: I have a Nordyne RA 80+ Series Residential Gas Furnace. Recently, the fan that circulates air ... A: It will not damage the unit, but it will increase the utility bill. There is a control for the fan ... | |
| cental ac compressor not kicking in | 6/4/2006 |
| Q: I ahve a lennox cental ac system it's about 18 yo and just yesturday the blower was running and the ... A: My dentist is a great dentist, but I know he is not this handy. I suspect a dead compressor with ... | |
| replacing window units | 6/4/2006 |
| Q: We are in the process of purchasing a 4 unit apt building. Current cooling is window unit and ... A: At all cost with kerosene heat in a tenant space, eliminate them. The units proposed sound like heat ... | |
| central a/c | 6/3/2006 |
| Q: Mr.Cook, We had a new central a/c installed and was completed yesterday, this is the first full day ... A: I am assuming with the return in the ceiling, the supply vents are also and the fan section is in ... | |
| Air Conditioning not cooling like it should | 6/3/2006 |
| Q: The AC(heat pump) runs constantly, but yet the temp. inside my apartment (800-825 sq.ft), never ... A: The supply air temperature is directly related to the return air temperature. There should be around ... | |
| Walk In Cooler cooling on and off. | 6/3/2006 |
| Q: I have a walk in cooler in my C-Store. About two months ago the thing stopped cooling and called in ... A: The unit is cycling on the low pressure control designed to protect the compressor on a loss of ... | |
| air conditioning/humidification | 6/2/2006 |
| Q: J, I have a cigar shop in Florida where I'm attempting to keep it roughly 70 degrees or so with a ... A: If it is feasible considering the location of the fan section, you may be able to run a vent from ... | |
| Re: Need Help with HVAC.... Thanks..Daren | 6/2/2006 |
| Q: .. My name is Daren Harrison with Georgia For Sale.com. I sell homes in Metro Atlanta and am ... A: but I work for a municipality and offer my service without compensation. There are two things that ... | |
| HVAC Auxillary Heat | 6/2/2006 |
| Q: I asked a question regarding a new HVAC and your reply was very helpful. You mentioned that the ... A: It is most likely the outdoor fan motor or motor capacitor that has failed for the fan to be ... | |
| A/C or Thermostat acting weird | 6/2/2006 |
| Q: We have a Bryant A/C unit that is approx. 7 years old and has always worked great. We have a ... A: There are safety controls in the unit, inside and outdoor unit that will reset when the power is ... | |
| RV Air Conditioner | 6/2/2006 |
| Q: I have a coleman mach 3 rv air conditioner. last week when i turned on the ac at the wall control, ... A: Either a relay, circuit board, or some other electrical component feeding the compressor has failed. ... | |
| AC | 6/1/2006 |
| Q: J Cook - Thanks for the help... Our townhouse AC unit does not seem to be cooling the third floor ... A: If this is a single unit, it will be very difficult to condition three floors without dampers or ... | |
| Heat Pump Question | 6/1/2006 |
| Q: Can you offer any suggestions. I am working on a 5 ton heat pump system, r22 refrigerant. System ... A: The system may be so low on charge that adding some will begin the frosting, but it has to have more ... | |
| Furnace/Air Conditioner | 5/31/2006 |
| Q: I have just a follow up question. If their is frosting on the line and the air flow or charge is low ... A: If you are comfortable checking, you can turn the power off to the indoor fan section, remove the ... | |
| Furnace/Air Conditioner | 5/31/2006 |
| Q: I turned on my air conditioner and it did run, however, it never really cooled the house. Their was ... A: It may be the indoor coil is iced up. This can be caused by a dirty indoor coil, or a low ... | |
| Trane XE1000 | 5/31/2006 |
| Q: The past 2 days the pipe coming out of the compressor (Fan) into the house is freezing. What is ... A: It is either low air flow due to a dirty indoor coil, or the unit charge is low. If the charge is ... | |
| heating AC unit size | 5/31/2006 |
| Q: I bought a house with an old furnace and ac unit. The furnace was ok in the winter, but now that ... A: It is a very detailed load calculation that is done to properly size a system. It will include the ... | |
| central air | 5/31/2006 |
| Q: Wy does my coil freze up and have ice all around it in the inside of the furnace and on the line ... A: This can be caused by low air flow due to a dirty indoor coil restricting air flow, or the unit ... | |
| Blower motor "sparks" when A/C turned on. | 5/31/2006 |
| Q: I had the A/C on during the weekend and all of a sudden the circuit breaker tripped and there was a ... A: Rather than the motor, with the explosion I would more think that water got into the controls and ... | |
| Bryant Central Air Unit running but little air from vents | 5/31/2006 |
| Q: Here's what it's doing: My wife said that after about 5PM today, the unit did not seem to be blowing ... A: Most likely the indoor coil is frozen with the ice on the refrigerant line. Turn the a/c off and the ... | |
| Refrigerator fan noise | 5/31/2006 |
| Q: I have a new LG side by side refrigerator which has just recently started making a loud noise from ... A: It could either be the fan is out of balance, or when the ice builds up the fan hits it before the ... | |
| Moving an exchange | 5/30/2006 |
| Q: I am going to knck out a wall in my house so that I may have a larger bedroom. Unfortunately there ... A: it really depends on the type ductwork. If it is flex duct, it is easily extended. If it is metal ... | |
| HVAC | 5/30/2006 |
| Q: Yes it is on. The blower on the inside is not working/ or blowing cold air. Thanks for your help. ... A: There is a problem with the indoor fan motor. Turn the thermostat fan switch to the on position ... | |
| A/C Blower motor not working | 5/30/2006 |
| Q: As usual over the holiday weekend my blower motor on the air handler unit quit working. 1st noticed ... A: It could very well be the capacitor. With a failed capacitor, you can hand start the motor as ... | |
| air conditioning outside unit | 5/30/2006 |
| Q: When I turn on my central AC it appears to be running properly inside the house (and blows air), but ... A: Either the outdoor fan motor has failed, it is not getting full voltage, or the capacitor has ... | |
| hard start kit | 5/30/2006 |
| Q: can you send me a diagram on how to wire a hard start kit. I finish school for ac-heating a year ago ... A: I have no way to send a diagram, but if it is a typical hard start capacitor with only two wires, it ... | |
| A/C Freezes Up | 5/30/2006 |
| Q: I have a 5kbtu Emerson 'Watt Watcher' window a/c unit that likes to freeze up over night (early ... A: 5000 btu is very small for anything but one room. It runs so close to the freezing point on the coil ... | |
| A/C (& heat?) Issue | 5/30/2006 |
| Q: (Miller Central unit, in a doublewide mobile home, about 6 years old)At the end of last summer our ... A: There is something in the installation that is causing a problem with moisture getting into the ... | |
| Flat Roof Venting | 5/30/2006 |
| Q: I have an 1,800 square foot Brooklyn Brownstone which often seems to be far hotter than the outside ... A: Actually there are many exhaust fans mounted for flat roofs that usually vent a kitchen or restroom, ... | |
| Home Central AC drain problem | 5/29/2006 |
| Q: I have two attic mounted central AC units, both of which share a common drain drop to a bath tub. ... A: The clog may be anywhere, but I would take it loose as near the unit as possible, use a union to ... | |
| AC | 5/29/2006 |
| Q: Tried to turn on AC for first time this season. Heat Pump did not start. MODEL CH7536VKA6 STYLE ... A: It is a process of elimination. Start at the cool relay and follow the 24 volts through each device ... | |
| Poor cooling HVAC Carrier Heat Pump | 5/29/2006 |
| Q: Greensboro NC. Carrier 2.5 Ton 12 Seer Heat pump pack installed 3-13-98. Honeywell media filter. ... A: I would contact the service manager and let them know the unit was just serviced and the unit is not ... | |
| Compressor Problems | 5/29/2006 |
| Q: Recently I ran an air compressor outside and a shop vack in the garage and tripped the breaker for ... A: If it is only 3 years old the compressor is still under warranty, but yes, I would say it has ... | |
| Dripping noise from upstairs ac unit | 5/29/2006 |
| Q: There is a dripping noise coming from our upstairs air conditioning unit. The noise can only be ... A: Any unit in an attic is required to have an auxillary drain pan under the unit, so if the main drain ... | |
| Circulating air blower works on "on" but not "auto" | 5/28/2006 |
| Q: I just submitted these questions to the wrong person so resubmitting to J. "Goodman A/C Mod. CK ... A: Since the fan operates in the run position, it eliminates the capacitor as the problem. The ... | |
| freezer problems | 5/28/2006 |
| Q: I have a frigidaire gallery stand up side by side fridge freezer model number frs26zgew.The problem ... A: Actually a unit of this type as far as the refrigeration goes is only a freezer. The refrigerator ... | |
| Cnetral Air Compressor | 5/28/2006 |
| Q: I have a 3 ton Rheem Central Air System installed in 1994. I purchased the home in 2004, I live on ... A: It sounds as though when a cooling cycle ends, the unit attempts to start back up too soon and the ... | |
| AHU Drain Pipe Clogging | 5/28/2006 |
| Q: Apparently I have face some problem with most of the AHU's drain pipe i have been servicing in the ... A: I am familiar with exactly what you are experiencing. You may try a small piece of pool chlorine in ... | |
| FURNACE BLOWER | 5/28/2006 |
| Q: TEMPSTAR FURNACE, I INSTALLED 1994 WITH CENTRAL AC. ? IS SIR BLOWER ALWAYS STAYS ON SAME SPEED FOR ... A: It will require two relays for the fan. The fan uses high speed in a/c because the air is denser, ... | |
| HVAC Add-on | 5/27/2006 |
| Q: I recently closed in my garage and made it into two rooms. I wanted to run central HVAC to the ... A: A duct system is a very sophisticated animal. It is sized from the unit forward, gradually reducing ... | |
| Charging central Air condition Unit | 5/27/2006 |
| Q: What is the proper procedure to add refrigerant to 20+ yr old GE condensing unit using R 22. A: I am not attempting to be smart about it, just realistic. It requires an EPA certification to use ... | |
| Noisy supply air registers | 5/27/2006 |
| Q: The problem is in one of our buildings at Trinity Southern Baptist Church in Casa Grande, Arizona. ... A: Unfortunately there may be little to be done. It sounds as though the ducts were sized incorrectly ... | |
| ac not cooling | 5/26/2006 |
| Q: i have a 5 ton ac for about 1700 square feei house it use to work great untill this yeari cant get ... A: 5 ton sounds way oversized for this area. It will cool down quickly and not run long enough to ... | |
| ac not cooling | 5/26/2006 |
| Q: i cant get the whole cool below 80 degrees the freon was check and was full the filter is clean ... A: since it cools down at night when there is less load on the structure, it sounds as though this unit ... | |
| A/C | 5/26/2006 |
| Q: I have a Trane A/C unit. It cools for a while and then the outside unit lines freeze up. I have to ... A: It is caused by either low air flow at the indoor unit because the indoor coil is dirty, the motor ... | |
| Problem with Steam Boiler constantly Filling | 5/26/2006 |
| Q: The other night we noticed water seeping from the air vent on one of the radiators on our first ... A: I have seen water pressures so high it will overide this valve and continue to introduce water in ... | |
| A/C Heat Fan | 5/26/2006 |
| Q: as I have 2 furnaces for my house, I swithched the capacitors and the problem remains. Bumped the ... A: It still sounds like a capacitor when you can bump the motor and it starts. Since you have ... | |
| Heat doesn't turn off except at breaker | 5/25/2006 |
| Q: New to this site but I must say it is great! My system will not turn off and it only stays on heat ... A: There is a relay, either a separate relay or it is part of a circuit board that has failed keeping ... | |
| Home air conditioning | 5/25/2006 |
| Q: We ve just installed a central A/C in a three-story rowhouse. The unit will only cool the first two ... A: as you have found, it is difficult to condition a two story structure with a single unit without an ... | |
| air flow between rooms | 5/25/2006 |
| Q: Actually there is no central system - that is our problem. It is just a big through the wall AC ... A: There is not going to be a realistic way to do this. The reason is the a/c unit is returning the air ... | |
| A/C Heat Fan | 5/25/2006 |
| Q: I have a central A/C heating system (Lennox). My fan stop running with thermostat on Auto or On. ... A: The first thing to check is the indoor fan motor capacitor. It looks like a small tin can usually ... | |
| air flow between rooms | 5/25/2006 |
| Q: The large air conditioner in our living room cools off the other rooms in our ranch style house - ... A: There should already be supply air vents in all rooms, however are there returns in every room? If ... | |
| Central A/C blower fan | 5/24/2006 |
| Q: Cook, I have a central A/C with blower fan located in the attic. It blows cold air into each ... A: Excellent question Jeff. Believe it or not, but it is proven often with three phase motors which are ... | |
| A/C Frosting up | 5/24/2006 |
| Q: J, My elderly parents run an A/C unit pretty hard. The model they have is a Whirlpool #: ... A: It is critical on these units to change or clean the filter regularly. It may have a stopped up ... | |
| ac unit | 5/24/2006 |
| Q: mi ac was getting frozen lots of ice in the garage unit and outside unit this was 3 weeks ago i ... A: Try replacing the capacitor on the outdoor fan. It looks like a silver or gray small can that is ... | |
| home air conditioning | 5/23/2006 |
| Q: whats the problem when your outside unit freezes up? All the oarts in the unit freeze and then you ... A: This usually indicates a low refrigerant charge. Make sure the indoor coil is clean and the indoor ... | |
| A/C air handler occasionally doesn't start | 5/22/2006 |
| Q: My air handler blower doesn't start up sometimes. The compessor (outside) will be operating, but the ... A: Walt it can be a number of things. It may be the fan relay is weak, the motor capacitor is weak. You ... | |
| Replacing residential A/C thermostat | 5/22/2006 |
| Q: My mom's house has a central A/C with a very complicated programable thermostat. I would like to get ... A: Honeywell is probably the most common thermostat maker. The proper stat is determined by the total ... | |
| A/C unit Bryant | 5/19/2006 |
| Q: As of yesterday we turned on our Central air system to a cooler temp. on the thermometer. The unit ... A: The outdoor unit is the a/c portion, the indoor unit is only the fan to distribute the air and they ... | |
| Blower shaking *hard* | 5/19/2006 |
| Q: I looked thru the previous answers but didn't see what I needed, so here I am. The blower on my air ... A: This can be many things. It may be a motor or blower bearing has failed, the motor is loose on the ... | |
| How big of a furnace do we need? | 5/18/2006 |
| Q: We are considering purchasing a home that is approximately 4000 finished sq feet, including the ... A: First, NEVER, EVER, close a vent. It will cause the hot air to back up in the heater and damage the ... | |
| Central Air | 5/18/2006 |
| Q: We have a central air conditioner tied into our 2 heaters. I turned it on this evening to cool the ... A: That is the major problem with a single unit attempting to cool or heat two levels. All of the heat ... | |
| Changing electric cooktop to gas | 5/17/2006 |
| Q: I am changing my electric cooktop to gas. I have had gas plumbed in, but have no electrical except ... A: That's better. First order of business is in the panel. If you are not comfortable working in a live ... | |
| oil burner blower wheel for abc slow speed burner | 5/15/2006 |
| Q: I have an abc slow speed burner (this is the information I was given by a repairman) anyway the ... A: You should be able to get this part. A motor is generic, so they are easily accessible, but for a ... | |
| Electric Range Repair | 5/12/2006 |
| Q: My girlfriend tells me her GE Mark 27 series electric range's oven, both the bake & broil elements, ... A: If this is all it takes for your girlfriend approval, wait 'till you tell her you can fix a TV. I ... | |
| Central Air | 5/11/2006 |
| Q: My house is 1 1/2 yrs built. My central air fan stays on but there is no cold air blowing. I changed ... A: The indoor unit is on a different circuit than the outdoor a/c unit. Go outside and see if this unit ... | |
| dirty sock syndrome | 5/8/2006 |
| Q: We had a new heat pump and new ducts installed for our downstairs about four years ago and have had ... A: The odor is usually from lack of dehumidification. Often it is the result of an oversize unit that ... | |
| Heat pump fan/blower | 5/7/2006 |
| Q: We have a 13 yr old York heat pump. I noticed that the fan-inside unit blower was running ... A: It is possible it is the thermostat, but more likely the fan relay points are sticking. The motor ... | |
| air conditioner comparisons | 5/4/2006 |
| Q: We are replacing a 15 year old central air conditioner. I have several quotes for the outside ... A: With the efficiency of units today, it is best when replacing the outdoor unit to use a " Matched " ... | |
| Basement heating and cooling | 5/1/2006 |
| Q: I finished my basement with three new rooms. A home theater which is completely window free, and a ... A: Your best option for this small of an area would be a small heat pump which would provide heating ... | |
| Supplemental heat | 4/24/2006 |
| Q: I have a two year old ranch home in Wisconsin with 2400 sq feet on the first floor and 1600 sq feet ... A: I do not know the future use of the basement area, and at this point, you may not either. I ... | |
| AC air handler not blowing? | 4/22/2006 |
| Q: We have a 5 year old home with dual zone heat pumps/AC units. Our downstairs unit has not been ... A: The outdoor unit is on a different circuit than the indoor unit with the fan that circulates the ... | |
| A/C Startup Noise | 4/19/2006 |
| Q: My central air conditioning unit is fairly new (5 years) and near the end of last season I had it ... A: Due to the unit not being level, it is most likely the outdoor fan blades hitting the frame of the ... | |
| Burning smell from blower motor | 4/18/2006 |
| Q: When the A/C is on. The smell starts after the blower motor kicks off with the thermostat, and ... A: I am not sure what type of sensor he can be talking about that would cause the motor to overheat and ... | |
| Burning smell from blower motor | 4/17/2006 |
| Q: I have a 10 year old electric Nordyne central air unit, model # E1EB015HA, ser # E1E9604 06196. I ... A: You did not mention if the odor is anytime the fan is on, or if the odor is when it is running heat ... | |
| A/C | 4/17/2006 |
| Q: Joey: Do you feel that it is necessary to get an annual check up for a central A/C system, one ... A: I would not be as concerned with the air as the heat. For the a/c, take some detergent or a ... | |
| compacitor | 4/14/2006 |
| Q: sir i have a duo-therm central air unit the compacitor is missing the one hooked up to the ... A: I can not locate any definitive info on this particular system either. From the information I did ... | |
| RHEEM 12 SEER GAS PACK | 4/5/2006 |
| Q: I HAVE A 1993 RHEEM GAS PACK AND THE HEATING EXCHANGE HAS A CRACK IN IT. I HAVE HAD IT LOOKED AT AND ... A: That is not a bad price for the exchanger replacement. Unfortunately in your situation to just get ... | |
| dryer repair | 3/27/2006 |
| Q: How do I get to the motor area to remove excess lint,Frididaire model #FDE 646 GESO Answer - It ... A: I was not familiar with the Fridgidaire # and thought you had a refrigerator. On a dryer, the back ... | |
| Split type inverter AC blower problrm | 3/26/2006 |
| Q: I have a split system inverter A/C unit. The temperature output appears fine, but the indoor unit ... A: Mark, the motor is most likely starting to lock up, however you can try replacing the motor ... | |
| i have a micro wave oven the... | 3/19/2006 |
| Q: i have a micro wave oven the just stopped seems like its blown a fuse .Can you tell me if they have ... A: Certain makes do have internal fuses. Make sure the receptacle has power, and if so, the most likely ... | |
| No Heat | 3/16/2006 |
| Q: The problem: No hot air from Rheem heat pump. The system(5yrs old)has always worked fine until now. ... A: The outdoor unit is on a different circuit than the indoor fan. Make sure the outdoor unit ... | |
| Dryer | 3/13/2006 |
| Q: Joey Hi, my clothes dryer stopped spinning it heats up but won't spin. Any ideas? A: it is most likely one of two things, either the belt broke, or the tumbler motor has died. You can ... | |
| air conditioner wont kick on | 3/10/2006 |
| Q: 1999 fleetwood ducted coleman ac unit. I replaced the thermostat because the ac compressor and ... A: That does not sound good Doug if you are talking about the outdoor fan. It is usually controlled by ... | |
| electric | 3/9/2006 |
| Q: I am producing a charge of electricity through induction from an alternating current. I am able to ... A: A load will always pull the voltage down to some degree depending on the starting voltage, the load, ... | |
| HVAC WIRING | 3/3/2006 |
| Q: I HAVE A TRANE XV 90 FURNACE W/ TRANE A/C. IT HAS A HONEYWELL EMM-3U MINIZONE PANEL AS IT IS A ZONED ... A: I do not believe this can be done very easily. The fan being a variable speed has a controlling ... | |
| Split A/C removal | 2/28/2006 |
| Q: Cook, I am moving and need to disconnect and remove my wall hanging split A/C. The wiring is easy ... A: These lines are precharged from the factory and have piercing mechanisms in the collars that pierce ... | |
| No Heat! | 2/26/2006 |
| Q: Hey Joe, I have a Carrier HVAC unit that is having problems heating the house. I think the ... A: I would say at this point it is a circuit board problem, a safety failure, or a safety that is ... | |
| HVAC WIRING | 2/21/2006 |
| Q: I HAVE A TRANE XV 90 FURNACE W/ TRANE A/C. IT HAS A HONEYWELL EMM-3U MINIZONE PANEL AS IT IS A ZONED ... A: This unit will have a three speed motor. Locate by the wiring diagram which relay the low speed wire ... | |
| trane electric heater | 2/20/2006 |
| Q: I experiencing problem with my electric heater made by trane. I am not sure the model but the house ... A: There are a combination of safetys on these heaters, including fuses internally, limits, and fusible ... | |
| Propane Gas Hot Air Furnace | 2/20/2006 |
| Q: Follow-up from a question of 2-13-06. Furnace would not cycle properly. Had to switch thermostat off ... A: With this amount of age, I think you made a wise decision. Even with a new unit, please use carbon ... | |
| Air Conditioner - 3 phase or 1 phase | 2/17/2006 |
| Q: My husband and I recently purchased a home in the Caribbean. We want to put in air conditioning and ... A: I am not familiar with the service availability there, but if there is much fluctuation in voltage, ... | |
| Propane Gas Hot Air Furnace | 2/13/2006 |
| Q: Went away for a week Feb. 1st. Left the furnace on with thermostat at 55.Got home and the tempeture ... A: There are safety controls that will reset when either turning the stat off and back on, or turning ... | |
| White Rodgers Thermostat Display not working | 2/11/2006 |
| Q: I think the battery on my thermostat display box is out. I dont know how to replace it, but I am ... A: I do not believe anything is wrong with the stat. I believe it has lost the 24 volts that operates ... | |
| Hi Joey - I bought a 2 year... | 2/10/2006 |
| Q: I bought a 2 year old home in New England last summer. I have central AC and an oil furnace. As you ... A: There are a couple of things you may try. If the vents are accessible, you can install a manual ... | |
| HVAC blower won't turn off | 2/6/2006 |
| Q: After my heat runs its cycle the outside fan will not shut off. I have to turn it off at the ... A: There is a relay and or a contactor that powers the fan. It is common for the contacts to stick on ... | |
| heat pump | 2/5/2006 |
| Q: last year the heat pump worked o.k. this year the h.p. didnt come on when the thermostat is set in ... A: First, most defrost boards do not have fuses. It is a mystery why the a/c works, but it will not ... | |
| over stove microwave | 2/3/2006 |
| Q: .. My 3 year old Kenmore is totally dead. I unplugged it, discharged it, and tested the ... A: Unfortunately we all get lemons sometimes. Actually the Kenmores are very highly rated for a good ... | |
| Beverage Cooler Not Cooling | 1/31/2006 |
| Q: I own an older Kold-Draft Beverage Cooler Model # KA-4, Made by Uniflow. It sits under my counter ... A: With the EPA regulations, you have to be EPA certified to open a refrigeration circuit. It is a ... | |
| Heat pump problem | 1/30/2006 |
| Q: I have a Rheem heat pump, model # RPKA-049JAZ, which recently stopped producing heat. The unit was ... A: I do not agree with the way most test a capacitor, and a true capacitor tester is much more ... | |
| My 10x10 room is stuffy | 1/28/2006 |
| Q: I hope that you can help me. i have a 10x10 room facing the beach here is Westminster CA. My room is ... A: It is a somewhat costly item, but you may be able to control the air quality the best by installing ... | |
| heat pump | 1/23/2006 |
| Q: The thermostat runs on a battery. I connected the wires as instructed in the instructions so I'm ... A: It is common when changing a stat with the power on, the transformer gets shorted out when two low ... | |
| Forced hot air heating..fan/blower problem | 1/23/2006 |
| Q: Followup To Question - If you think you can help me with this subject, I will follow up with the ... A: The 100 degree setting is to shut the fan down after cool down. The 150 is the on setting after a ... | |
| Forced hot air heating..fan/blower problem | 1/23/2006 |
| Q: If you think you can help me with this subject, I will follow up with the problem...Thanks Answer - ... A: On this old of a system, I suspect it has the type of fan control that is the bi-metal type. You can ... | |
| heat pump | 1/22/2006 |
| Q: I attempted to install a Hunter programmable thermostat for my heat pump. It says it is for multi ... A: I need to know which color wires are connected to what terminals, and was the power off on the ... | |
| Temco floor furnace | 1/21/2006 |
| Q: I have an older Temco floor furnace[ducted], natural gas. model 506-1, serial no# 22032, 50,000btu ... A: The gas valve is actually a sophisticated solenoid valve. My fear is after not being used for this ... | |
| Heat Pump Maintenance | 1/17/2006 |
| Q: I have a question about what do I need to do as far as preventive maintenance on my heat pump. Is ... A: There is very little to be done for preventive maintenance on a heat pump. The main things to be ... | |
| The thermostat was already... | 1/17/2006 |
| Q: The thermostat was already removed. What's the wire color coding and corresponding lettering on ... A: Sly, there are several connections that are standard, but unfortunately others are not due to ... | |
| heat pump | 1/13/2006 |
| Q: i have a carrier heat pump and it is not defrosting i know it is one of the 3 things therostat ... A: It has been my experience the problem is 99% of the time in the circuit board. Replace the circuit ... | |
| Heat Pump | 1/12/2006 |
| Q: I checked the contactors and am certain the coils are the correct voltage and the contacts appear to ... A: I believe you are correct. It sounds like there is liquid getting to the compressor. Usually the ... | |
| Heat Pump | 1/12/2006 |
| Q: I have a Lennox HP-14 heat pump. The compressor, accumulator, check valves, compressor contactors, ... A: It sounds like a defective contactor since it is tripping the breaker when this happens. A reversing ... | |
| Ice Maker | 1/9/2006 |
| Q: Water was in ice tray and leaking through front dispenser. I shut off water and cleaned up. When I ... A: Some debris may have entered the feeder water line when the water was turned back on. Turn the water ... | |
| how to determine the cooling capacity of my portable room A/C | 1/9/2006 |
| Q: I have an air conditioner that is not working very efficiently. I have a friend who is a lawyer who ... A: The only way to get the exact BTU output would be to do an in depth diagnosis while the unit was ... | |
| heating | 1/4/2006 |
| Q: american standard furnace model x100c948c serial number z3810y57g can the speed on the blower motor ... A: I do not have a diagram for this particular model, but you are most likely correct. Be sure on the ... | |
| insulating the heating ducts | 1/3/2006 |
| Q: It has been very clarifying. After your advice i did further research on the net and stumbled upon ... A: That is a new product for me, but I can not imagine a paint on insulation that would be as efficient ... | |
| insulating the heating ducts | 1/3/2006 |
| Q: It is in the basement. I have shut off the heating to the basement (to conserve heat) and instead ... A: For no more than insulation costs, I would use the same R 6 on all of the ductwork. I prefer the ... | |
| dryer with scrambled brains | 12/29/2005 |
| Q: We have a kenmore 110-60092990 dryer. Intermittently it will flash 'PF' and not respond to attempts ... A: I have the Whirlpool models just like this set, and actually Whirlpool makes the Kenmore appliances. ... | |
| Two-zone Water-to-air Heat Pump System | 12/29/2005 |
| Q: Re: Two-zone Water to Air Heat Pump System I recently replaced the expansion tank on my two-zone ... A: The unit is operating normally. There is a set pressure the unit is designed to operate at, and the ... | |
| Furnace intermittingly blows cool air | 12/26/2005 |
| Q: MR Cook..I have a HEIL GAS FURNACE QuietComfort80 series Model No. NTC6100GF that after heating ... A: To give a little credit to the technician, it is very difficult to determine the exact problem when ... | |
| heat pumps | 12/23/2005 |
| Q: We recently purchased a second home (in a colder climate) which comes with a carrier heat pump. Im ... A: You would need to use an amp meter while the radiant heat is on and get an amp reading to determine ... | |
| refrigerator won't work | 12/20/2005 |
| Q: have a practically new bottom freezer ge. We moved it to another home and plug it in for 24 hours. ... A: You may have damaged the compressor or the start components. A refrigeration system builds up ... | |
| mattress near heater | 12/19/2005 |
| Q: it is a radiator. (sorry, i couldn't remember what they were called before.) my dad thinks it is a ... A: A radiator either has steam or hot water circulating through it. There should be a valve to damper ... | |
| No Heat, but have air- Nordyne for mobile home | 12/18/2005 |
| Q: We have a central heating & air unit, outside, 4 ton for our DW mobile home. unit is about 10 yrs ... A: There is not usually a reset on the blower section. It is most likely a faulty breaker since it has ... | |
| mattress near heater | 12/17/2005 |
| Q: I am moving into a room right now and the place that i want to put my mattress is right next to a ... A: It really depends on what type of heater this is. If it is a gas heater, or a baseboard heater, I ... | |
| Heater not heating | 12/16/2005 |
| Q: Cook I'm not sure what information you all need but here goes. Last year I noticed that the heating ... A: The small fan is called an inducer motor. It expells the exhaust gases from the firing chamber and ... | |
| Heating | 12/16/2005 |
| Q: I have a Rudd 2 zone forced air heating/airconditioning system in a vacation home in the mountains ... A: On a heating system of this design, the heat exchanger has to get to a set temperature before ... | |
| Kenmore dryer | 12/15/2005 |
| Q: My electric dryer doesn't shut off when it should. Do you happen to know the name of the part? Is it ... A: Yes it is the timer. It is actually on the face of the dryer, the knob that you turn to activate the ... | |
| PROGRAMMABLE THERMOSTAT | 12/10/2005 |
| Q: My question is do you really save money by using a programmable thermostat? I leave my house about 7 ... A: Good question Larry. The way I explain this is consider the house a pot of water on the stove. You ... | |
| ac/ , heat pump ,strip heater complete system | 12/10/2005 |
| Q: Hey Joey: I am thinking of getting a new system (split) for our home as ours is now about 15 years ... A: What you will need is a heat pump outdoor unit, a matching indoor fan section, and there are usually ... | |
| Carrier 58SSC Intermittent Heat | 12/9/2005 |
| Q: Joe: Please bear with me but I want to give you as much detail as I can. I have a Carrier Model ... A: You have experienced as have I that the manufacturers are clear as mud with their diagrams and ... | |
| Thermostat Issues | 12/8/2005 |
| Q: Is it hard for someone with little experience to replace it, or should I look into hiring someone? ... A: The main body of the thermostat should snap loose from the mounted sub base and in the back of the ... | |
| Thermostat Issues | 12/8/2005 |
| Q: Sir, Quick question. I have a digital programmable thermostat that has recently started resetting ... A: It should only reset itself if it loses power and there is no back up power source such as a battery ... | |
| Heating Duct System | 12/7/2005 |
| Q: I need help with a question for school. Your answer would be greatly appreciated, and help me out ... A: They all could be, but the least likely is a plenum. When referring to a duct system, a plenum is ... | |
| AC dies ? | 12/3/2005 |
| Q: I have a window Panasonic 9BTU unit -only about 4 years old- (in NYC) - - I had it on the fan ... A: In most cases a service call may be as much as a replacement. If you can locate a repair service ... | |
| Bryant Heat pump | 11/30/2005 |
| Q: My Heat pump does not seem to be blowing enough warm heat out to warm my house.If it is 45 degrees ... A: A simple test of the refrigerant charge is to allow the outdoor unit to run about 15 minutes in heat ... | |
| fan blows cold air (instead of heat) | 11/27/2005 |
| Q: I got a problem with a Coleman DGAA056BDTA central gas heating system. Details are: - furnace ... A: I have never heard of an attic fan in relation to a furnace. It may either be a fan that is commonly ... | |
| occasional water leak from the refrigerator | 11/27/2005 |
| Q: I have a GE side by side refrigerator/ freezer that is approx 8 years old. It has automatic ice ... A: It is one of two things. Either the water valve for the ice maker has a loose connection, or being a ... | |
| Gas fireplace shuts after a few minutes | 11/25/2005 |
| Q: We have a Heat N Glo gas fireplace, about 4 years old. It has a standing pilot and adjustable flame ... A: I think you are on the right track. With that much difference in pressure it would affect the pilot. ... | |
| Energy Star progamable Thermostat | 11/23/2005 |
| Q: I would like to replace the old thermostat for a gas furnace. Would like to find a Energy Star ... A: I can understand the frustrations. I have been in this industry for over 20 years, and it seems ... | |
| gas pack failure to light | 11/23/2005 |
| Q: Joey: My rheem gas pack is a 3 ton unit installed in 1992. When the weather is warm it will light ... A: The number one component that fails on a gas unit is the thermocouple. It looks like a brass stem ... | |
| toe kick heater | 11/21/2005 |
| Q: i was wondering if the problem could be with the thermostat or switch itself ? i have a 220 toe kick ... A: It could be either, but most likely the heater coil. One way you can test the thermostat, turn off ... | |
| New Central AC unit Installation | 11/20/2005 |
| Q: I am building a Garage with a condo on the second floor of it. The garage/workshop portion is about ... A: This type of system is called a split system due to the fact there is an indoor and an outdoor ... | |
| Need Help with wiring Carrier 40VU003320 | 11/19/2005 |
| Q: Need Help with wiring Carrier 40VU003320 I got this problem with not know if the wire are correct ... A: I am not familiar with this particular device and I do not want to try anything that may do more ... | |
| toe kick heater | 11/19/2005 |
| Q: i have a 220 toe kick heater in my kitchen ubderneath my kitchen cabinets. today it quit working and ... A: All electric heaters have a high temperature safety in them. It may indicate the safety has opened ... | |
| HVAC question | 11/19/2005 |
| Q: Should I be getting a mixture of cold and hot air when my heat is on ? Also when I try to shut my ... A: I would inspect all of the ductwork. There may be a loose fitting in the return allowing ... | |
| Gas fireplace shuts after a few minutes | 11/19/2005 |
| Q: We have a Heat N Glo gas fireplace, about 4 years old. It has a standing pilot and adjustable flame ... A: I would say the thermocouple is good. Its function is to send a signal to the gas valve to indicate ... | |
| blower motor | 11/17/2005 |
| Q: My central heat and air unit is giving me problems, The fan that blows air into the vents won't go ... A: I am not sure which one of these controls the fan, but you can determine it one of two ways. One, ... | |
| Trane heat pump | 11/16/2005 |
| Q: I have a trane heat pump located in my attic which provides heating and cooling for my second story ... A: It could be either, but we can do a relatively simple test. The breaker needs to be turned off on ... | |
| Air Conditioning | 11/15/2005 |
| Q: I have a Chrysler Airtemp unit # 1264-01K S/N # 1J234461 Compressor Model # 3003-06 P/N 2025349 . ... A: I have a couple of options. I know Chrysler built their own compressors in the large commercial and ... | |
| Transformer in air handler short | 11/15/2005 |
| Q: I have since gone out to the compressor unit and found that the contatctor was 'open' and was able ... A: Often when the coil shorts, the contacts will also be burned and cause the contactor to stick. If ... | |
| Transformer in air handler short | 11/15/2005 |
| Q: I had the transformer ~24vac / 240vac in the house burn the common lead on the high voltage side. I ... A: A simple way to test part of the control wiring would be to turn off power the the indoor or outdoor ... | |
| Return air calculations | 11/15/2005 |
| Q: Two years ago, two of the four returns in our house were removed. This was done to add ceiling ... A: I wish I could be more help, but I do not have enough information, although even if I had the ... | |
| HVAC electrical issue | 11/12/2005 |
| Q: I have a question about our heat pump system. We have a Trane outdoor unit and thermostat, and I ... A: The blue and red lights are both for the electric stip heat. A heat pump thermostat has the electric ... | |
| Central a/c | 11/11/2005 |
| Q: Our home in New Orleans was flooded following Hurricane Katrina. Two central a/c units will have to ... A: The higher efficiency units have many bells and whistles and can get very expensive, with it ... | |
| Air Conditioner | 11/10/2005 |
| Q: I just wanted to let you know the outcome of my problem. They put a new outside unit in and it has ... A: That is great Trisha. I try to start with the most obvious, which were the items I mentioned. As we ... | |
| Air Conditioner | 11/8/2005 |
| Q: I seem to have a mystery problem. My AC is blowing damp, humid air. My air handler is new. The coils ... A: The charge may still be part of the culprit if he did not charge it properly. A simple test of a ... | |
| Cold Air Ducts | 11/7/2005 |
| Q: I purchased a house last year and it's all electrical. | |