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| Subject | Date Asked |
| electric central heat | 3/6/2011 |
| Q: my central heat does not work on auto, the ac does but not the heater, it has to stay on constant to ... A: The auto & heat position is a function of only the thermostat. I would imagine you have a digital ... | |
| Ducane Heating Problem | 3/4/2011 |
| Q: I have a Ducane MPGA100B4B gas furnace. The furnace only runs for about a minute then shut off. It ... A: Gremlins Dan, I'm still stuck on identifying the code flashes & voltage to the gas valve.Rig up a 24 ... | |
| Carrier Model 58GFA/DFA | 2/26/2011 |
| Q: Howard- We've been having an issue with our furnace not keeping the set temp on the thermostat. It ... A: Helo Nick, Those intermittent problems are difficult to solve. Changing the power switch was just a ... | |
| Heat Pumps were installed on dirt | 2/22/2011 |
| Q: I recently purchased a 4 year old home and had a home inspection. I contacted a HVAC company to set ... A: There are drain holes in the bottom of the outside units but I'll bet they can't drain on the ... | |
| Rheem Furnace Burner Problem? | 2/22/2011 |
| Q: Expert, I have a Rheem Low Boy furnace (model# AC-080A). When the furnace tries to ignite, 10% of ... A: Main thing that kills a gas furnace is a hole in the heat exchanger. How much rust is there laying ... | |
| Why does the heat stop and turn on all of a sudden? | 2/20/2011 |
| Q: The Inducer Motor turns on, but all of a sudden it doesn't go on to the next phase, it doesn't turn ... A: The next event after the induced draft motor is the air pressure switch closes. Thats the round ... | |
| outside electrical issue | 2/8/2011 |
| Q: ruud UPNE- 036JBZ 2 years old (outside unit) Ruud Acheiver air handler 1 year old inside unit... ... A: I presume this is a heat pump ?? The voltage at the contactor supposed to 240v. But if it runs ... | |
| AC Defrost / Aux Defrost | 1/25/2011 |
| Q: I recently had a York dual fuel system installed (YHJF48 heat pump, YP9C furnace running propane). ... A: Think you have an idea that won't work. The defrost cycle is a reversal of the heat of the ... | |
| pam342kooa1 | 1/22/2011 |
| Q: Outside breaker tripped, reset, fan and aux heater strip came on for two minutes or so and the ... A: The sign of a dead short in the unit Some where. Does this breaker that tripped control the inside ... | |
| burning smell from heater vents | 1/20/2011 |
| Q: Since November 2010 their has been a burning smell in the bathroom downstairs. Very strong. Have had ... A: Bet you have a keen sense of smell Alice. Mine is really dull. And that causes a problem tracking ... | |
| Vexar Electric Heater (furnace) | 1/19/2011 |
| Q: My Vexar heating unit (mobile home) continously clicks during operation. I am pretty sure that it is ... A: Best thing to click in an electric furnace is the sequencers. They operate the switch by a 24v ... | |
| UNIT NOT HEATING WELL | 1/14/2011 |
| Q: I live in Florida, and have a heat pump system. It's been blowing hot/cold air intermittently, and ... A: Ho Roberta, First off the freon needs testing in the cooling mode. Soumds like that has been done. ... | |
| HVAC Problem | 1/13/2011 |
| Q: I have a comfortmaker furnace (NTG9125FKA3) that is about 12 yrs old. The thermostat is a maple ... A: The burners should fire after the igniter. Gas valve not opening. If both gas valves are open, need ... | |
| Furnance Rumble & Cycling on/off before reaching temp | 1/11/2011 |
| Q: We have a Coleman/Evcon HVAC (DGRT075AUA) in our 1993 manufactured home (propane furnace - electric ... A: The prpane conversion kit includes something(different shapes) that "plugs" off the gas valve ... | |
| Furnance Rumble & Cycling on/off before reaching temp | 1/10/2011 |
| Q: We have a Coleman/Evcon HVAC (DGRT075AUA) in our 1993 manufactured home (propane furnace - electric ... A: The propane pressure is set by the regulator on the tank. It is 12" water. The gas valve has a kit ... | |
| Gas Smell | 1/9/2011 |
| Q: I have a duel fuel all in one furnace that is outside. It is only 2 1/2 yrs old. When the furnace ... A: Not acquainted with all those types of furnaces but I can take a try at the problem. And that would ... | |
| air handler does not cut off after reaching temp | 1/7/2011 |
| Q: Livingston my Air handler runs after the thermostat reaches the set temp. I have replace the ... A: That blower is controlled by a relay on the circuit board. Its sticking. Try tapping on the little ... | |
| 220v generator | 1/2/2011 |
| Q: how can i use a 220v generator to check the hvac system on properties that have no power supply? how ... A: Connect the 2 hot leads to the two terminals at the contactor in the outside unit. Be sure to ... | |
| inside fan not working properly | 12/31/2010 |
| Q: i have an all in one rheem outside ac/heat(LP) unit with honeywell electrical components ... A: The heat fan control is completely separate from the cool fan control circuit. Your problem is with ... | |
| Goodman GMP 100-4 | 12/30/2010 |
| Q: The ignitor glows,but the burners don't light up. What do I need to do? A: Make sure the gas valve is turned on. Also the main gas valve to the furnace is open. Measure the ... | |
| bryant fa4anf048 fan running 24/7 | 12/30/2010 |
| Q: have bryant fa4anf048 heat pump- fan runs 24/7 and strip heat is also running- unit will not turn ... A: Sounds like you have a stuck relay on the heat strip. Access the heat strips & each element has a ... | |
| cooling booster for refrigerator | 12/29/2010 |
| Q: I have an outdoor snack van which has a glass display fridge at the front facing outward. Problem i ... A: Now thats an interesting question, Barry. Lets see, you could add some styofoam slabe glued to the ... | |
| Propane furnace will not light, pilot goes out. | 12/28/2010 |
| Q: I have a propane furnace that after it tries to start a heat cycle, the pilot goes out. The pilot ... A: There is a pilot adjustment on the gas valve. It is hiding under a little cap. Need a small ... | |
| insulation | 12/28/2010 |
| Q: We bought an older home 8 years ago that is all electric, so there's no furnace in the basement. ... A: You could sure benefit from the heat from the basement stove by removing SOME of the insulation. I ... | |
| Baseboard registers | 12/25/2010 |
| Q: The baseboard heat registers in my home (triangular type) are 24" wide and 4.5" high, but the floor ... A: My lowest ratings is always the same - clarity. We speak a different language in the a/c business & ... | |
| Youk gas furnace 17 years old | 12/24/2010 |
| Q: The furnace thinks there is an electrical problem with the supply electricity. This is at the ... A: Reverse the black wire(hot) & the white wire (ground) & retry. These circuit boards need the correct ... | |
| No heat | 12/22/2010 |
| Q: I have a Lennox 80MGF heater & no heat. I cannot find the ignitor. Do you know how i can get to it ? ... A: The draft fan runs first on a call for heat. The flashing LED is a code for what the problem may be. ... | |
| Lennox inducer motor bracket | 12/22/2010 |
| Q: I have a Lennox G16q3-75-5 furnace, and two of the thin, metal pieces - brackets, I assume - that ... A: Those brackets are for a larger motor, like aa 1/3rd hp blower motor. Won't work for the draft ... | |
| Heil Quaker Heater | 12/17/2010 |
| Q: I have an old heil quaker heater that I have had for years. I let it set for about a year and the ... A: Some easy jobs are not too easy. Not to good to not have a pilot flame & the main burner is spewing ... | |
| How to make an old furnace fan come on intermittently | 12/16/2010 |
| Q: We have recently installed a wood stove in our trailer and would like to make the fan on our old oil ... A: minus 40 deg I'd just rollover & die !!! OK, follow this: Get a double throw switch with center ... | |
| Heil Quaker Heater | 12/16/2010 |
| Q: I have an old heil quaker heater that I have had for years. I let it set for about a year and the ... A: No problem Chris. Need to remove the pilot line & take off the pilot orifice tip & clean out the ... | |
| Furnace | 12/15/2010 |
| Q: We have a Carrier furnace which is 8 years old, and we do have a thermostat. Suddenly a couple of ... A: May have a faulty thermostat if it is digital. Access the wires behind the tstat & jump across the ... | |
| aux heat won't drop out properly | 12/15/2010 |
| Q: I have a heat pump and when it is cold the aux heat kicks on and brings the temp up to set point, ... A: That ought to be caused by a control circuit. Since the aux heat is controlled by an outside circuit ... | |
| Janitrol GMP 100-3 Wont ignite | 12/14/2010 |
| Q: Service tech inspected and said needed new pressure switch. Obtained and installed and the vent ... A: After the pressure swich closes the ignitor will glow(or pilot flame will light) Jump across the ... | |
| Carrier Weathermaker 9200 | 12/13/2010 |
| Q: I have a Carrier Weathermaker 9200 in the past couple of winters I get a code 31, this is an ... A: Have you tested the hose or tube between the draft motor & presure switch ?? Dirt can foul up the ... | |
| Thermal zone furnace | 12/13/2010 |
| Q: I have a thermal zone furnace model number GU120M20C-S. I keep getting a code that says the pressure ... A: The codes are usually good on the problem.So I gather the ignitor never lights up ? Thats next ... | |
| Old Trane heat pump (about 20 years?) | 12/11/2010 |
| Q: I have an old Trane (Weathertron?) heatpump - maybe about 20 years old - not sure - not the first ... A: 1. Need to test the heat elements. The relays that turn them on can be faulty. R to W can be first ... | |
| vents | 12/11/2010 |
| Q: I have a 5 ton electric heat pump.I am only heating the back part of my home/about 600 sq.ft.could I ... A: A 5 ton system produces about 2000 cfm. To keep the velocity under control so it won't whistle you ... | |
| hard wiring frigidaire electric furnace | 12/10/2010 |
| Q: Just bought a frigidaire electric furnace trying to hard wire but can not find anything on web to do ... A: Must have 4 heat elements with 2 60 a breaker. I would think just connecting 2 elements(36k btu's) ... | |
| noise from residential gas forced air furnace | 12/7/2010 |
| Q: Recently,a fire at the home next door damaged the wall of my home on which the thermostat is ... A: That off/.on switch seems to have been a "Summer" switch that would circulate air. The buzz could be ... | |
| Burner randomly does not light. | 12/6/2010 |
| Q: I have a Comfortmaker Enviroplus 90 furnace. Every so often the ignitor lights the pilot but the gas ... A: Not sure what your furnace has for proof that the pilot is lit but that would be the problem. If it ... | |
| american standard gas furnace | 12/5/2010 |
| Q: Howard I have an American Standard CDB060A-D attic mounted downflow heating unit. New in 2003. The ... A: So if all the tests points to the circuit board thats nextto replace unfortuneately. Takes a ... | |
| american standard gas furnace | 12/4/2010 |
| Q: Howard I have an American Standard CDB060A-D attic mounted downflow heating unit. New in 2003. The ... A: I would remove the hose or tube between the draft motor & pressure switch & check for crud. Check ... | |
| blower will not turn off | 11/20/2010 |
| Q: I have a Coleman heating unit model #EB12B and the blower will not turn off. When I turn the power ... A: Turn the ohm meter to its highest setting. Then disconnect all the wires (incl caopacitor) at their ... | |
| blower will not turn off | 11/20/2010 |
| Q: I have a Coleman heating unit model #EB12B and the blower will not turn off. When I turn the power ... A: Could be a short in the motor winding since the motor is running slower than the heat low speed. ... | |
| 20kw strip heaters | 11/20/2010 |
| Q: I have a Bryant heat pump system. I have observed the output temperature swinging abruptly when the ... A: So you are wanting to reduce the heat output when defrosting? You can cut out 1 element at a time & ... | |
| american standard heater follow up question | 11/19/2010 |
| Q: i have an 18yr old American Standard Freedom 78 heater in my attic. this season it's not getting hot ... A: Takes a computer to test those boards Bob. You just have to thoroughly test everything to know it ... | |
| american standard heater question | 11/19/2010 |
| Q: i have an 18yr old American Standard Freedom 78 heater in my attic. this season it's not getting hot ... A: $139 !! Never. Thats about a $10 part. If the flame sensor is a metal rod with a single wire to it, ... | |
| dripping sound in wall | 11/19/2010 |
| Q: I own a bryant model 340MAV gas furnace that is 14 years old. It is located in the basement of a ... A: Oh memories of basic training ! I did it in '44 in Amarillo, TX in the Summer. 30 mile hikes witha ... | |
| Uneven Temperature | 11/19/2010 |
| Q: I have a 4 bedroom, 2 bath 2000 sq. ft. home. All rooms pretty much heat & cool the same (central ... A: Messed up ducts, huh?? Best way to start is adjusting the supply air grilles. Begin closing them ... | |
| HEATING | 11/18/2010 |
| Q: I live in a 3 story home with a basement that i finished. I want to know if i can add a damper in ... A: You can always tap onto a supply plenum & "steal" air for another run. That just robs air for the ... | |
| Air handler | 11/17/2010 |
| Q: I have a York 3 1/2 ton heat pump in which the 15kw auxiliary heat does not work properly. All ... A: You have encountered the trouble with new heat pump thermostats installed on older heat pumps. Saw ... | |
| definition | 11/17/2010 |
| Q: What is exactly meant by "free air" return ANSWER: Hi William, Don't think I really know what that ... A: Ah ha ! A draft hood hangs over the exhaust of the heat exchanger on a gas furnace. It guides the ... | |
| Air handler | 11/17/2010 |
| Q: I have a York 3 1/2 ton heat pump in which the 15kw auxiliary heat does not work properly. All ... A: Heat pumps btu output generally need additional heat at about 32 deg. Its possibe yours may have 2 ... | |
| Air handler | 11/16/2010 |
| Q: I have a York 3 1/2 ton heat pump in which the 15kw auxiliary heat does not work properly. All ... A: I'm speculating Jack that the 2 elements are not connected to the power supply, or maybe even to the ... | |
| definition | 11/16/2010 |
| Q: What is exactly meant by "free air" return A: Don't think I really know what that means either ! Only context I can think it being used is in ... | |
| furnace not working | 11/15/2010 |
| Q: I came across an answer you provided for the exact same furnace (4yr old Frigidare) back in 2008. ... A: So you have a faulty air pressure switch. Remove the hose or tube from the motor & switch & make ... | |
| heater may or may not lite | 11/15/2010 |
| Q: I have an older unit it is an Acroaire Model#GUI075A012IN. The thermostat seems to work fine, and ... A: I would say the combustion air motor is not running full rpm , getting hot & turning off, stopping ... | |
| york diamond 80 | 11/14/2010 |
| Q: .i have a york diamond 80 furnace, which is over 22 years old. the repair guy said the circuit board ... A: Some of those boards can cost well over a hundred bucks, some far less. If you can buy one from the ... | |
| SP80 Furnace won't start circ fan (AC Does) | 11/13/2010 |
| Q: This is long, but I hope in a helpful way. Generic “SP80 High Efficiency” gas furnace sold under ... A: Gee whiz, Steve, I NEVER get that much info !! I have never seen a wireless thermostat before !! ... | |
| Programmable Thermostat | 11/13/2010 |
| Q: Purchased the RTH111 programmable thermostat. Is this compatable with electric baseboard. If so what ... A: I'm not acquainted with that thermostat. But electric heater operate off 240 volts ya know. So if ... | |
| propane heater during power failure | 11/9/2010 |
| Q: I have an all electric house-but I do have a propane wall heater that is started with an electric ... A: So I presume you have 120 volts to the wall furnace ?? The gas valve would have to have a setting ... | |
| furnace wont stay lit | 11/8/2010 |
| Q: model#ncc100bhal serial #L931475038 sears 80 persent ng gas furnace the spark ingnighter lights the ... A: A flame sensor is acting up. Is there a small metal rod sticking in the flame ?? Or it could be the ... | |
| furnace | 11/7/2010 |
| Q: when i turn my heat on with my gas furnace it may heat for a few minutes or not at all before it ... A: Yo George, Sounds like a dirty flame sensor. Do you have a small metal rod in the flame of a burner ... | |
| Furnace won't stay on | 11/7/2010 |
| Q: I recently had a furnace installed. It worked fine for a while, but now it seems to not want to ... A: If input is 88k your output is around 75k. NOT NEAR ENOUGH for 2700 sq ft. The furnace of a 88k btu ... | |
| Furnace won't stay on | 11/6/2010 |
| Q: I recently had a furnace installed. It worked fine for a while, but now it seems to not want to ... A: Wow Rachel, you sound desparate !! Need to get this thing going. One thing missing is it gas or ... | |
| Air Handler and Thermostat | 11/6/2010 |
| Q: I have a heat pump and a thermostat with 7 wires. I made the mistake of trying to change it to a ... A: Heat pump tstats have changed in the last few years. They have combined several terminals to one. ... | |
| t-stat hookup | 11/4/2010 |
| Q: I have a forced air natural gas furnace and central air controlled with a digital t-stat. I am ... A: How are you controlling water temperature from the boiler if the pump runs constantly ? Also where ... | |
| Furnace Issue | 10/30/2010 |
| Q: I have a Armstrong SX90 furnace that won't fire up. The ignitor will not start to glow. Have ... A: Need to test the hose between combustion air motor & pressure/vacuum switch as well as the openings ... | |
| heat pump | 10/30/2010 |
| Q: my heat pump is not coming on when I ask for heat. I noticed under the wire panel on heat pump at ... A: Now thats it Tim !! You.ve got to get 24 volts across the side terminals. You've got a bad wire from ... | |
| HVAC | 10/29/2010 |
| Q: I have a 9 year old International Comfort Products Corp. HVAC package unit. Model PH5548AKA4 .I live ... A: Need to determine which side of the transformer is opening. A good clue. Generally its the low volt ... | |
| Ruud Deluxe 90 gas furnace not igniting electronic ign | 10/29/2010 |
| Q: I have a Ruud Deluxe 90 Plus gas furnace model UGEB-12EE-JS, 125,000 btu, just over 10-11 yrs old. ... A: Got to be the pressure switch not closing/opening when the ignitor won't glow. But when it does & no ... | |
| heat pump | 10/29/2010 |
| Q: my heat pump is not coming on when I ask for heat. I noticed under the wire panel on heat pump at ... A: Hey Tim, thanks for the extra info. I'm still not acquainted with that connection to the unit. But I ... | |
| Unit won't go into cooling mode! | 10/28/2010 |
| Q: I have a ruud a/c unit. I had a bad fan motor as well as a bad contactor.How ever I can not get the ... A: Making it run OK pushing in the contactor indicares the problem is in the control circuit. Somwtimes ... | |
| rheem criterion2 fan wheel bearings | 10/23/2010 |
| Q: i have a rheem criterion2 furnace, model rgph. it is 8 years old. it has started to make a bad ... A: The noise can be from a loose setscrew that hold the wheel on the motor shaft. Check that out first. ... | |
| Burners will not ignite | 10/20/2010 |
| Q: I have a comfortmaker LP gas pack. I had it installed in the year 2000. The LP tank is full. When ... A: I would test the voltage to the gas valve coil 1st.May be a switch holding it off.If no voltage, ... | |
| Armstrong gas furnace | 10/19/2010 |
| Q: I have approximate 10 year old Armstrong forced air furnace. Had to have blower motor replaced last ... A: Don't have code info. Can say the sequence for heat is: Combustion air motor runs, closes air ... | |
| AC Flow | 10/19/2010 |
| Q: I have a brick ranch house with a Rheem AC air handler unit in the attic with AC vents in the ... A: Running a bit late answering Mike. Been out of town (OK) & experienced an earthquake while there. ... | |
| furnace blowing only cold air | 10/8/2010 |
| Q: I have a nordyne rc 92 upflow condensing furnace. It is only blowing cold air. The yellow flame ... A: The gas valve relay is built in the gas valve. Need to remove all the wires on the gas valve & ohm ... | |
| replacing an existing central heating/cooling system | 10/8/2010 |
| Q: "I live in Kansas, AC season lasts about 6 months, have a ranch house of 1780 SQFT, average pitch ... A: Got any high ceilings ?? If so, I would go for a 4 ton furnace on a 3.5 ton cool system.Lots of ... | |
| coleman heater | 10/8/2010 |
| Q: i have a coleman gas heater and all of a sudden the blower just came on and it wont shut off the ... A: Must have a short in the 2 wires somewhere. With the ignitor on there was a call for heat, which ... | |
| fan will not cut off/air conditioning | 10/7/2010 |
| Q: I have a carrier 28rd036000 gas furnace/electric air unit. In air condition mode the house fan unit ... A: Tap on the little black boxes on the circuit board to see if one is stuck.Also, there can be wires ... | |
| Furnace Won't Ignite | 10/7/2010 |
| Q: I have a Coleman G9D-UP high efficiency furnace with a hot surface ignitor ignition. The HSI does ... A: The only thing not happening is the gas valve not operating. Make sure the gas valve is turned on as ... | |
| amana heating and air systems | 10/4/2010 |
| Q: Are there any known problems with these 15 seer ac and heating units (new)? I had one that worked ... A: Evaporator coils have become the major problem in a/c equipment.Way too much service work is ... | |
| Split ac unit | 9/30/2010 |
| Q: Just found out my home in Fla has an AC problem.The compressor(outside) is running,the fan on top of ... A: You have the symptoms of no freon at all. Does the inside blower run when fan switch is ON ?? It ... | |
| ac/heater fan won't go to high rpm | 9/30/2010 |
| Q: Can you help me with this problem. I have a/c unit in the garage Carrier model 58gsc065. Fan is ... A: You may have bad windings in the motor. I would replace the black hi speed wire on the circuit board ... | |
| Central Air conditioning durability | 9/26/2010 |
| Q: just to how for how long A Carrier air conditioning will last, independently that a mechanical ... A: 12 to 15 years possible. It can be a function of a really good installation too.That is, it never ... | |
| Wall furnace causes adjoining wall to get extremely hot | 9/24/2010 |
| Q: I purchased a home that has LP wall furnaces, Prefection by Schwank,35000 BTU, millivolt type. When ... A: I've installed a few of those but cannot imagine what would cause that much heat. You sure the heat ... | |
| Using Nitrogen to do Leak chk | 9/23/2010 |
| Q: I have a question about performing a leak check by using nitrogen. My experience primarily has been ... A: good questions. I have been in the business since R22 was .69 cents/lb !! Used it to pump up tires, ... | |
| furnace brand and duct configuration | 9/23/2010 |
| Q: I have a 1922 819 sq foot brick duplex in Denver Co with r-39 insulation in attic and a full ... A: There are computer programs that can calculate heat loads & equipment sizing but after years of ... | |
| wiring of UV disinfection | 9/22/2010 |
| Q: I recently installed a Swordfish residential UV air disinfection unit on the cold air return plenum ... A: Better way Jeff involves a relay that the coil is 24v. connect the coil across jumper wires to the ... | |
| New furnace sizing | 9/21/2010 |
| Q: I am trying to decide how to determine the correct furnace size for my parents 1939 block home. The ... A: I'm not a super tech kind of guy, just rely on 30 yrs experience. The super tech use computer ... | |
| HVAC | 9/21/2010 |
| Q: I have a residential carrier HVAC (model 38YCC). In NC september have a fresh climate, so I switched ... A: You need to do several things to diagnos the problem. Make sure there is 240v powewr to the outside ... | |
| install | 9/18/2010 |
| Q: im installing a 2 ton condenser and it was working fine now i found out there is a hole in tha ... A: Tell me what you are meaning when you state "return". Is that the suction line ?? Now I'm sure you ... | |
| Upflow Ruud Achiever Super 80 air flow | 9/15/2010 |
| Q: I purchased a house in August of 2009, in which a new Ruud Achiever Super 80 upflow was installed ... A: All your heat is up in the ceilings Joe ! Yes, houses with cathedral ceilings need more airflow than ... | |
| Air flow on furnace/a/c unit very low | 9/14/2010 |
| Q: I have a Rheem Imperial glass lined furnace that is about 20 years old, not for sure. I have ... A: Getting better Jane. A plenum is just a box. You have a return air & a supply air. But I'm getting a ... | |
| Air flow on furnace/a/c unit very low | 9/13/2010 |
| Q: I have a Rheem Imperial glass lined furnace that is about 20 years old, not for sure. I have ... A: I'm sorta confused by your description of your furnace. I assume you have a cooling system on your ... | |
| replacing HVAC | 9/9/2010 |
| Q: Hey Howard, u r told to change your oil in the car every 3000 miles right? Does there come a ... A: Your question poses an answer that is mainly an opinion, not from experiences. So my opinion from 35 ... | |
| Rheem furnice problem | 9/7/2010 |
| Q: I have a Rheem furnice that was working fine for heat.I wanted to have the ability to run the fan ... A: It would be dificult to say what the problem is since you never know what can happen when a wrong ... | |
| Coleman AC Unit | 9/6/2010 |
| Q: I have a Coleman AC and heating unit. When I run the AC, it makes that thumping sound when it first ... A: I presume the sound is coming from the furnace ?? I thats correct, there is nothing moving except ... | |
| Armstrong SX 80 blower won't stop | 9/4/2010 |
| Q: Pulled off panels on front of furnace after unit front was sprayed (hose blew on iron filter sys.) ... A: Sounds like a relay is stuck. Tap on the black boxes on the circuit board to see if that stops the ... | |
| a/c working intermittently | 9/3/2010 |
| Q: I have a 1989 Amana a/c unit Mod # CA7030QKA1 that works intermittently. My furnace is only 5 years ... A: Did the green LED keep on flashing ?? Thats the best clue to the problem since the flashing will ... | |
| r-410 | 9/3/2010 |
| Q: 3 ton 410 system installers set blower on med speed i put on high adjusted charge worked for a week ... A: Listen to the sound of the high side line near the TXV. Use a screwdriver touching the line & in ... | |
| a/c working intermittently | 9/1/2010 |
| Q: I have a 1989 Amana a/c unit Mod # CA7030QKA1 that works intermittently. My furnace is only 5 years ... A: When you manually close the contactor & the fan AND compressor run it is a control circuit problem. ... | |
| DUCT SIZING? | 8/31/2010 |
| Q: How do I know what size duct to resize. I have put in a heat pump and evaporator coil to my ... A: ALL of the ducts need redoing. The cfm difference requires larger ducts for good distribution. Thats ... | |
| dual run capacitor | 8/30/2010 |
| Q: Why would a service technician jumper the "herm" side to the "fan" side of a dual run capacitor. ... A: Hang on Jeff, we gotta get this straight ! Good foto but it didn't quite show enough to me. I see ... | |
| dual run capacitor | 8/30/2010 |
| Q: Why would a service technician jumper the "herm" side to the "fan" side of a dual run capacitor. ... A: I'm not clear on your using the "jumper" word. Did you mean "move"? I think of a jumper as a wire ... | |
| HVAC question | 8/26/2010 |
| Q: I had a brand new system installed. Specs are as follows: > Goodman Furnace GMVC950905DX > A/C ... A: Your numbers indicate this is a 4 ton unit, right ?? That size ought to draw about 12 amps plus or ... | |
| Supply Outlet Placement | 8/25/2010 |
| Q: Howard, I am in the process of building a new home and I disagree with the placement and ... A: Big potential trouble Jeff. Put it this way: A a/c system is only as good as the distribution ... | |
| water in flexible duct mobile home | 8/25/2010 |
| Q: i live in florida , i have a mobile home with a heat pump last week on pipe broke in one of the ... A: Need to remove the top of the unit & inspect the drain pan under the evaporator coil. May be stopped ... | |
| Low Flow A/C | 8/24/2010 |
| Q: I have central air conditioning in my home. Upon recently turning it on, I noticed that most of the ... A: Duct problems Jeff. The master bedroom is the farthest from the furnace & that duct run is ... | |
| Condenser quits running | 8/24/2010 |
| Q: I have a 5 year old ton Luxaire AC. The complete condenser (fan and compressor) quits running after ... A: Since both fan & compressor stop the only thing that can do that is either a power loss or the ... | |
| a/c drain | 8/23/2010 |
| Q: Originally my attic a/c had no secondary drain. After a few years the primary did get clogged but ... A: Isn't the drain pan bigger than the furnace ?? Sure should be.If you have an electric furnace is ... | |
| a/c drain | 8/22/2010 |
| Q: Originally my attic a/c had no secondary drain. After a few years the primary did get clogged but ... A: The secondary drain difference in height is set by the evaporator coil drain pan. No can change. So ... | |
| Heil Air Handler | 8/22/2010 |
| Q: I have a Hiel heat pump system which recently developed a leak in the coils on the air handler, the ... A: Once a coil starts leaking it needs replacing. There are so many places a coil can leak another one ... | |
| Water leaking from ducts | 8/22/2010 |
| Q: new unit put in 2007 did not change ducts. water leaking from air ducts in almost all rooms. What ... A: 2 things joushlyn, overflowing drain pan & the blower is blowing the water down the ducts or ... | |
| AC air distribution | 8/21/2010 |
| Q: Howard, I have a Carrier two part central ac system. The living room cools off very nice and the ... A: Someone that installed the ducts didn't know how to do it right. That duct at the end of the plenum ... | |
| HELP | 8/19/2010 |
| Q: We are replacing the compressor in a Chrysler Air Temp unit model # 140 40GB 011 serial # GM440312 ... A: There's one thing you learn early in the a/c business & that is NEVER guess at the tonnage of a ... | |
| Why is it hotter inside my apartment than out? | 8/19/2010 |
| Q: I recently moved into a 4th floor apartment, approximately 750 square feet. It's August, so it is ... A: Are you on the top floor on the 4th floor ?? If so, the roof is providing the heat. And I suspect ... | |
| Condensation buildup on my indoor air handler | 8/17/2010 |
| Q: I had 2 new units (inside & Outside) installed about 5 years ago. I noticed a funky smell coming ... A: If you need to you can apply insulation on the outside of the furnace. But every open bit will allow ... | |
| HVAC | 8/16/2010 |
| Q: I bought my house 21/2 years ago & seller installed a new gas pack all-in-one unit, which is ... A: Wow, Eliabeth that brought tears to my eyes !! What a tradgedy ! You said this is a gas pack outside ... | |
| Air-conditioner not coming on | 8/14/2010 |
| Q: We have a Weather King just installed 4 months ago. Two days ago we had the cool going off for 10 ... A: Wonder where they put the drain line ?? These things produce a lot of water & maybe tripped the ... | |
| emergency drain | 8/13/2010 |
| Q: I had my entire A/C unit changed about 1.5 years ago. I have been having an ongoing problem. Water ... A: Do you live in a 2 story house ?? Favorite place for drain line problems. Got to solve the problem ... | |
| Compressor | 8/12/2010 |
| Q: My compressor fan has started making a scraping (as opposed to squealing) noise when the fan stops. ... A: Spin the blade & watch it for coasting to a stop. Then shake the blade for ANY play of the bearings. ... | |
| Replace Heat Pump | 8/10/2010 |
| Q: Your question was Mr. Livingston: I am planning to replace a 22 year old York split system heat ... A: A heat pump in Maryland ?? Never heard of such. Every time its 32 or below your heat strips are on ... | |
| Thermostat Not Controlling Heat Pump | 8/9/2010 |
| Q: I have a Heil heat pump that is 5 to 10 years old. A couple of weeks ago, it stopped responding to ... A: Thats strange. I would say that the contactor is sticking to keep cool on but the fact it could be ... | |
| Water heater inducer motor pressure problem | 8/8/2010 |
| Q: I have a GSW direct vent water tank that has been operating flawlessly since installed new 2 yrs ... A: Have had questions about pressure switches & folks have found dust or dirt in the vacuum tube or in ... | |
| New Thermostat | 8/7/2010 |
| Q: AC worked this morning. Installed a ritetemp 6036 digital according to instructions. Electric ... A: If anbody tells you a capacitor can be the cause of lack of cooling kick them in the a-- & get rid ... | |
| New Thermostat | 8/6/2010 |
| Q: AC worked this morning. Installed a ritetemp 6036 digital according to instructions. Electric ... A: Jumed across Rc & RH ?? Whatcolor was on Y ? Can be either blue or yellow. You can't dead short ... | |
| Goodman A/C purge cycle | 8/5/2010 |
| Q: Equipment: Goodman Modle GMP075-3 Gas furnace with HSI Module B18099-13. Sometimes when the t'stat ... A: If that was my former answer that was all wrong !! You really need to separate the wires behind the ... | |
| Payne PA-10 unit suddenly stopped | 8/4/2010 |
| Q: I am not sure how old the unit is or where my dad bought it from, but he had a used Payne PA-10 unit ... A: Good idea, Kristopher, electricity is really dangerous. Not acquainted with that PA-10 unit but ... | |
| Clicking | 8/1/2010 |
| Q: Heater or AC unit both acts like it wants to come on then starts clicking. If you turn the ... A: Thats a head scratcher, Elizabeth. I would suspect the thermostat IF you have mercury controlled ... | |
| Air Conditioning Unit only cooling half the house | 7/31/2010 |
| Q: We have lived in our house 3 years this past June New Built 2 floors 2900 sq ft. If you were looking ... A: Duct systems nake or break a good unit. Are there dampners on the ducts at the supply plenum ?? ... | |
| How manyA/C outlets/vents ? | 7/29/2010 |
| Q: How many vents/outlets can a 3.5 ton A/C ( 1/4 horsepower blower- 1900 sq. ft)unit support? Is there ... A: Wow, 15 drops !! How many rooms will you be cooling ?? How many "spaces "?? You will encounter ... | |
| central air | 7/28/2010 |
| Q: why is the discharge line leaving the outside unit cold instead of hot or warm? thanks. A: First thing to test is the amount of freon in the system. If it is too low the freon is cooled by ... | |
| Can low voltage damage refrigerator compressor | 7/27/2010 |
| Q: My voltage often drops about 10% to around 108 volts. Can this cause damage to the compressor on my ... A: Sure won't do it any good trying to start with low voltage.It will get hot trying to start, then the ... | |
| A/C unit not cooling enough? | 7/25/2010 |
| Q: Our A/C unit doesn't seem to be cooling enough. We recently had our capacitor replaced and someone ... A: I would expect you to say "well, it used to cool, now it doesn't" Correct ?? First thing to ask is ... | |
| Water pooling | 7/24/2010 |
| Q: A/C & Natural Gas furnace in basement. At one time there was a humidifier attached to the furnace ... A: Sounds like a stopped up drain line from the evaporator coil. Very little water flow can be stopped ... | |
| HVAC - blower control | 7/24/2010 |
| Q: I have an older Lennox HVAC system, thermostat is mercury switch type two stage. I want to install ... A: The green & red wires in the thermostat control the blower motor. If you take the greeen wire to a 2 ... | |
| Convert my one AC zone home to two zones | 7/24/2010 |
| Q: My house is 2800 sq ft (1st and 2nd floors)plus a finished basement for total of 3700 sq ft. The ... A: Need to add zone control modules added in the duct system that respond to 2 individual thermostats. ... | |
| AC not cooling during the day | 7/23/2010 |
| Q: I have a two story Florida home built in 2001 with the original Bryant, split unit, gas furnace, 4.0 ... A: Something wrong. Way too much heat load. That 77 & 80 degree supply should be about 60 +/-. What ... | |
| AC compressor kicking in and out | 7/22/2010 |
| Q: I have a 3 ton R22 Goodman compressor and a 3 ton R22 TXV Heil air handler. Brand new. We have 42' ... A: That 55 psi is way too low. Should be about 70psi for a 40 deg evaporator coil. The 55 is below ... | |
| AC not cooling during the day | 7/22/2010 |
| Q: I have a two story Florida home built in 2001 with the original Bryant, split unit, gas furnace, 4.0 ... A: Time for a capacity test. With an accurate thermoneter in hand, run the cooling a 1/2 hr or so & ... | |
| HVAC | 7/21/2010 |
| Q: Howard, My girlfriend and I are purchasing our first home and we have a lot of questions, but I'll ... A: The usual place an a/c leaks is in the evaporator coil. If the guy that looks at it knows anything ... | |
| Ac not cooling very well | 7/20/2010 |
| Q: we recently moved to our new house and turn on the AC when the summer starts. Though the AC runs ... A: Sounds like the duct system is not too good. Maybe even the size of the a/c is too small. Should ... | |
| Bryant A/C capacitor re[lacement | 7/19/2010 |
| Q: My old capacitor is a cylinder w/3 terminals. The new one is a 2 terminal. I have a yellow, black ... A: Well I'm running late & like to help fast when someone is sick. Yellow & black are for the motor. If ... | |
| correct way to read gauges-R22 | 7/16/2010 |
| Q: I have only serviced A/C on my cars.I completed HVAC/Home study/certificate so no hands on ... A: Those readings on the unit are test pressures. An evaporator coil works at 40 deg. Look on the R22 ... | |
| Central Air - Air Duct Cleaning Question | 7/14/2010 |
| Q: I purchased a home 2 years ago and it has a very good central air system in it approx 5 years old. ... A: I never have believed the value of duct cleaning. I have been in a lot of attics where the ducts ... | |
| Split A/C Units. | 7/11/2010 |
| Q: I have three split Samsung A/C units. One went bad and I eventually replaced the control circuit ... A: Never know if there is a pressure switch on these units Mike. If there is, you can trace the control ... | |
| goodman 4 ton return air | 7/11/2010 |
| Q: I have a goodman 4 ton split unit heat pump 16 seer rating. It's a two stage compressor and blower. ... A: That is amazing that the installer located the furnace way at the end of the house to make it close ... | |
| Wiring Single Zone Gas Furnace | 7/10/2010 |
| Q: Can you tell me if I am right in the wiring of a single zone gas furnace? Come out of the furnace ... A: Sounds good Adam, except for "...above the furnace another 4" sq. receives the feed ...& is spliced ... | |
| singer ac blowing hot air | 7/8/2010 |
| Q: We live in an apartment complex in a brick building on the 3rd floor. The older singer comfortmaker ... A: You are getting all the heat load from the units below you. Can't do anything about that. Plus you ... | |
| Air Stratification with new Carrier Infinity A/C system | 7/8/2010 |
| Q: I have an "A" Frame house with three levels. The main part of the house (on this new system) has a ... A: Thats a good name, I'm Howard too ! Your just in a big battle with the laws of physics with hot & ... | |
| Blower Fan in attic unit | 7/7/2010 |
| Q: Have zoned units in attic and downstairs. When temp in attic goes >90F unit blower fan will not come ... A: It appears to be the thermostat.There is a time delay on a call for cool. Usually 4 to 5 min.No ... | |
| Blower fan in attic unit | 7/5/2010 |
| Q: Have “identical” zoned units in attic and downstairs. When temp in attic goes >90F unit blower fan ... A: Boy, Steve that's a good one ! I'm just going wild to guess that one. Do you have a powered attic ... | |
| compressor runs intermittently | 7/4/2010 |
| Q: I have a heat pump, not sure what make or model, that i know is good on freon, since it was just ... A: Doesn't it always happen when you really need it ?? If the capacitor fails the comp. won't run. I ... | |
| 2 ton goodman package heat pump | 7/2/2010 |
| Q: I am looking to purchase a used goodman 2 ton package unit model GPH 1324H to replace an existing ... A: How old is the used package ? Is it pretty clean ?? I don't think too much about used a/c ... | |
| Run Capacitor Replacement | 7/1/2010 |
| Q: I recently had my Lennox air conditioner serviced. The technician pulled the run capacity from the ... A: Get out your shotgun & run the guy off .HE IS A CROOK !!! First, capacitors don't slosh. They are ... | |
| hvac wont shut off | 6/30/2010 |
| Q: i have tenants complaining about the ac costing them a fortune because it won't shut off. They say ... A: Sounds familiar. I service a lot of rental units & this sounds awful familiar. They NEVER change an ... | |
| Noisy Furnace System | 6/27/2010 |
| Q: I live in a small house (1033 square feet) with a noisy 20-year old Ruud furnace/AC system. The ... A: This is noisy furnace day for questions !! A 3 ton cooling systen needs a return air(RA) opening of ... | |
| New HVAC- Very loud at vents | 6/27/2010 |
| Q: I just had a new HVAC system installed. It is a high efficiency (95%) system with ECM motor. I am ... A: Those variable speed motors move a lot of air. They supposed to adjust it for the tonnage & they ... | |
| AC blower | 6/26/2010 |
| Q: My AC stopped working yesterday. checked everything. electric company put us on conserve energy so ... A: What happens when you turn the fan switch to ON only ?? Cooling can't function without a blower. ... | |
| Multi-Zone or Single / 1 or 2 Stage AC ??? | 6/26/2010 |
| Q: I am looking at three proposals and two differences stand out - whether a single or two stage AC ... A: If the ducts are designed properly every living space will be comfortable regardless of certain ... | |
| Multi-Zone or Single / 1 or 2 Stage AC ??? | 6/25/2010 |
| Q: I am looking at three proposals and two differences stand out - whether a single or two stage AC ... A: Thats almst a TMI,San. Really need a floor plan for an accurate assessment.I would not recommend a 2 ... | |
| Flex Duct Issues | 6/24/2010 |
| Q: Howard, Thanks for taking the time to read my question. My home is 7 years old and we have always ... A: The 6" lines should not be too long, maybe 6 ft or so. Sure need to correct those juntions with ... | |
| Flex Duct Issues | 6/23/2010 |
| Q: Howard, Thanks for taking the time to read my question. My home is 7 years old and we have always ... A: you are on the right track. You got a lousy duct job. Starting off, do you have ducts wrapped with ... | |
| new equipment install | 6/23/2010 |
| Q: Mr. Livingston, thanks for taking the time to look at my question. I'm building a new house in a ... A: well you've pinched a nerve of mine to ask about prices. I'm from the old school where we doubled ... | |
| Blower Fan in attic unit | 6/19/2010 |
| Q: Have zoned units in attic and downstairs. When temp in attic goes >90F unit blower fan will not come ... A: Would be interestiug to know if the blower will come on when the attic is hot by jumping across the ... | |
| Gas Furnace | 6/19/2010 |
| Q: We are putting a gas furnace in a closet. Where does the cold air return go and do you have to use a ... A: Need to build a platform 12" high for the furnace. Then the return air grilleS (plural) cut into the ... | |
| ac compressor | 6/18/2010 |
| Q: Why the liquid line is not hot and the compressor is sweating? What is going on? ANSWER: Compressor ... A: No, the condenser coils can't handle that many more freon. Think that if you have an electric ... | |
| New Furnace/Air Conditioner | 6/17/2010 |
| Q: I am replacing my 35 year old furnace and air conditioner. I've had several bids and have narrowed ... A: Annie, Don't forget the R410 ! Carrier is good stuff but parts are rather expensive. Glad you went ... | |
| New Furnace/Air Conditioner | 6/17/2010 |
| Q: I am replacing my 35 year old furnace and air conditioner. I've had several bids and have narrowed ... A: Two brands of a wide variety. One expensive one cheap. Maybe not but the Goodman should be the ... | |
| ac compressor | 6/16/2010 |
| Q: Why the liquid line is not hot and the compressor is sweating? What is going on? A: Compressor sweat indicates too much freon is coming back from the evaporator coil. Nothing but gas ... | |
| HVAC Service Cost | 6/16/2010 |
| Q: We currently have a Carrier air conditioner in our home that is 26 years old. It still operates ... A: It takes all kinds & the a/c service techs have them. I'm in Texas & the service fees are about $80 ... | |
| noisy inside unit | 6/14/2010 |
| Q: I have a Trane xr-80 that was installed in 2003. It is still working GREAT ... except that it ... A: Fan switch on the thermostat runs a high speed fan, the same as for cooling. I would look around ... | |
| Furnace | 6/14/2010 |
| Q: I have a two story 3600 sq ft house with two 4-Ton units, one for upstairs and one for downstairs. ... A: After rereading your initial question you never say which kind of furnace you have, gas or electric ... | |
| noisy inside unit | 6/14/2010 |
| Q: I have a Trane xr-80 that was installed in 2003. It is still working GREAT ... except that it ... A: Wel, thats a good one Elmer. So you have pretty well isolated the noise within the furnace case ?? ... | |
| bedroom ceiling vents | 6/14/2010 |
| Q: My husband and I bought our home 2 years ago. It's a quad level home with ceiling vents for heat ... A: Need to do an inspection to check my diagnosis first. If insulation is needed you need some 1.5" or ... | |
| Furnace | 6/13/2010 |
| Q: I have a two story 3600 sq ft house with two 4-Ton units, one for upstairs and one for downstairs. ... A: Thats strange since you are suffering from not enough cooling & those guys were going to just add ... | |
| bedroom ceiling vents | 6/13/2010 |
| Q: My husband and I bought our home 2 years ago. It's a quad level home with ceiling vents for heat ... A: looks like there is none or little insulation around the grilles in the attic. There is a metal box ... | |
| HVAC repair | 6/12/2010 |
| Q: When my AC unit has been running for a while during the day, it cuts off about 8pm each night. A ... A: I wouldn't deal with this tech. He's way off base I'm pretty sure in his diagnosis. If a capacitor ... | |
| carrier heat & air | 6/11/2010 |
| Q: My central heat/air system was not working and when I checked it I found that the run capicitor was ... A: Those are strange happenings Robert. The amps increase goes along with the high head but I fail to ... | |
| HRV wiring | 6/7/2010 |
| Q: .i am installing a venmar hepa 3000 hrv that is ducted into my furnace ducting. I have it on a timer ... A: All I can see Ron is a single poledouble throw relay with a 10 volt coil, normally open. Relay ... | |
| AC vents and airflow | 6/6/2010 |
| Q: My home has a finished basement that gets VERY cold when the AC is running.There is one 9 1/2" x ... A: Is there an open stair well to the basement ?? Cold air falls & can get into the basement that way. ... | |
| HVAC | 6/2/2010 |
| Q: "I have an evaporator leak from my bryant system. to me it appears to be just condensation. the leak ... A: Really not acquainted with the drain pans on your model. Too many different kinds. I can say tho ... | |
| Thermostat Install Cause Freeze | 6/1/2010 |
| Q: I just installed a Lennox x4146 to replace a Trane Bay 239 on my TWN036C100B1 heat pump unit. I ... A: Was the inside blower working OK during the run tests ?? The outside coils frozen over is a puzzle ... | |
| Central ac blowing fuse | 6/1/2010 |
| Q: I have changed the compressor fan motor. Unit runs for approx 30-40 mins. Compressor continues to ... A: Make sure the fam motor is turning the correct direction. Then check all the power supply terminals ... | |
| AC filter-clarified | 5/31/2010 |
| Q: I previously may have asked you a question about our A/C filter. This is a clarification of my ... A: If the LR grilles are just flat they don't accept filters. Got to have a flat frame area. So if they ... | |
| Lennox Whisper Heat | 5/30/2010 |
| Q: I purchased a 1993 home last year with the G20 furnace. It has the 30W33 igniter module installed ... A: You don't have a code manual for the flashes you see? That is a aluable tool for diagnosing the ... | |
| A/C Units | 5/30/2010 |
| Q: I had my AC replace with Gibbson AC units last summer. Also the Thermostat with Honeywell. Just ... A: Yes it happens on any system, old or new. These leaks can be repaired easily, finding the leak can ... | |
| R22 Air Handling Unit | 5/28/2010 |
| Q: Had a Trane 410 inside air handling unit installed about 3 weeks ago. Valve changed to convert to ... A: I think your R16 is really R410. Never heard of R16. Anyway, Its not really recommended to have a ... | |
| HVAC Troubleshooting | 5/28/2010 |
| Q: I have a 6 year old Goodman Heat Pump that is not cooling the house properly. I checked the high and ... A: Appears that you need a couple of pounds of freon. Some systems can lose a lot of capacity with just ... | |
| Replace HVAC or wait? Probable cost? | 5/13/2010 |
| Q: My HVAC is a split unit -- 5 ton AC (installed outdoors in 1992) and ~95,000 BTU heater (installed ... A: Day & night is a downgraded unit of Carrier. For your minimum useage I would service it at the ... | |
| Replace HVAC or wait? Probable cost? | 5/13/2010 |
| Q: My HVAC is a split unit -- 5 ton AC (installed outdoors in 1992) and ~95,000 BTU heater (installed ... A: You will have about $3000 equipment cost for 13 SEER stuff. Add Lennox plus Elite add ons & that ... | |
| zoneline 3500 no heat, ac okay | 5/12/2010 |
| Q: Got a zoneline 3500 on remote thermostat. I caused the problem, I am sure. Replaced thermostat ... A: Usually heat is considered more important than cooling. Therefore the reversing valve is actuated ... | |
| 13 Seer cost with installation | 5/7/2010 |
| Q: I am getting quotes to have an XB13 HP 13 SEER Single Speed Compressor, HVAC system (heat pump w/AC) ... A: I assume the new stuff uses R 410a freon ?? It should be. I was just looking at the prices (mine) ... | |
| secondary heating coils won't shut off | 5/6/2010 |
| Q: i have a trane heat pump with an american standard air handler in the attic. this winter the fan ... A: Need to test the relays that control each heat element. If they are open with no call for emergency ... | |
| Contactor | 5/5/2010 |
| Q: I need some help troubleshooting my TempStar 2000 heat pump. The outside unit stopped working ... A: Some more possibilities are the low pressure switch has been tripped since the freon has leaked so ... | |
| fan speed adjustment on heater/ac | 5/5/2010 |
| Q: I have two 12 year old Trane heating/ac units in my home. The fan speed on one is much faster and ... A: Cool speed could be changed to blue, heat could go to red. Need to watch the cool since the airflow ... | |
| Compressor failed on OLD unit | 4/26/2010 |
| Q: The 3 ton unit at my restaurant is about 50 years old or so. The compressor is on the roof and the ... A: Was the 8" duct capturing ALL the air from the blower ?? If so that could have restricted the ... | |
| Room Air Conditioner | 4/26/2010 |
| Q: We have a 2 story house in the south and our HVAC does really well for the downstairs. However, the ... A: Got good attic insulation ?? There is no insulation in interior walls so other rooms not cooled can ... | |
| Trane XL1200 Super Efficiency Weathertron Heat Pump | 4/25/2010 |
| Q: I asked this question earlier to Frank A. and got a response (perhaps automated?) that he doesn't ... A: the Emergency light being on may indicate that the electical heat elements MAY be on. Not good. Need ... | |
| Service Manual | 4/24/2010 |
| Q: Could you help me find a service manual for my Tempstar SP80 Nat gas furnace/AC unit? I need to ... A: This is strange since a bad capacitor is usually the cause when the motor turns the wrong direstion. ... | |
| Service Manual | 4/24/2010 |
| Q: Could you help me find a service manual for my Tempstar SP80 Nat gas furnace/AC unit? I need to ... A: could be the hi speed windings are bad. But first, test the run capacitor with your ohm meter. Then ... | |
| dirt around ceiling vents | 4/24/2010 |
| Q: my mom has dirt around most all her ceiling a/c vents.it started in the kitchen area which is ... A: Dirt comes from dirt bypassing the air filter plus the evaporator coil being excessively dirty. ... | |
| Combustion Air Venting in to-be finished bsmt | 4/22/2010 |
| Q: I'm planning to finish a roughly 400 sqft area of my basement once I close on my house next month - ... A: A fresh air intake needs to be 1 sq in./1000 btu boiler. A motorized vent can connect to the heat ... | |
| freon gas container | 4/21/2010 |
| Q: Our company in Mongolia is a mining company. There are many heavy duty equipment and we do ... A: We just turn the empty ones in for scrap metal. Our usual sizes are generally 30 or 50 #.The valve ... | |
| Furnace error codes | 4/19/2010 |
| Q: I have an American Standard series 80 Furnace that has a red error code light that is flashing 4 ... A: The temp limit circuits are the little red buttons located near the burners.There may be 2 to 4 of ... | |
| Air handler coil leak 3 years in row | 4/15/2010 |
| Q: I completed construction on my home in March 2007. In June 2007 my second floor system stopped ... A: Boy.ike I NEVER had that happen before !! I have had a very few get leaks in the coil after about 2 ... | |
| variable speed vs single speed airflow | 4/10/2010 |
| Q: We are in the process of replacing our existing 4 ton unit with an Amana 4 ton. We received quotes ... A: A variable speed senses air pressure & changes speed according ly. Ih has a larger blower wheel than ... | |
| Blowing Cold Air from vent | 4/8/2010 |
| Q: my aircondition unit blows cold air. Reapir people told me that Motor that blows air is bad. He ... A: Does the motor still run ?? That motor cost about $60, you need to get another bid. Also, some ... | |
| new air install has never worked | 4/7/2010 |
| Q: may of 2005 we had central air added to cool our upstairs in our new cape cod house. it has never ... A: Sorry, after the 1st year thats it. Seems that there may have been a freon leak all along that was ... | |
| blower works but no air is comming from vents | 4/6/2010 |
| Q: however there was cold air blowing out of the unit itself around the exhaust vent. Is there a ... A: Usually there is no valve ned s to be opened from heat to cool. Something is blocking the air. Now ... | |
| rheem RGDA-100A-AR gas furnace | 4/3/2010 |
| Q: I recently turned off my furnace via the thermostat control switch to do some duct work. When I ... A: Got the diagram. I don't have the regulation codes anymore on venting to see what they say.But I ... | |
| rheem RGDA-100A-AR gas furnace | 4/2/2010 |
| Q: I recently turned off my furnace via the thermostat control switch to do some duct work. When I ... A: I would ask if the inline fan you installed was blowing the wrong way ?? There are tight rules as ... | |
| Hunter 44360 | 3/28/2010 |
| Q: I have recently installed the Hunter 44360 thermostat, but I have had a problem with it. It will ... A: You must have a heat pump. The new thermostats for heat pumps will not work with old heat pumps.I ... | |
| AC motor - windings? | 3/25/2010 |
| Q: Just had a routine AC maintenance call. The technician measured amp from one of the motor wires, ... A: It is true that the rated amps on a motor can't exceed but by 0.1 amps to overheat the motor which ... | |
| Attic Ventilation | 3/18/2010 |
| Q: I live in Santa Barbara, CA in a single-story house with no A/C. My attic space gets hot in the ... A: Sorry about the delay Don. Been sick & should have applied for a vacation. One rule in physics ... | |
| HVAC | 3/17/2010 |
| Q: I have motor rated @ 16 amps. when I put a clamp meter on it it reads 7.5 to 8.2 without the belt, ... A: The motor rating is the max draw it can handle. 16 amps.The work load on the mtor is defined by the ... | |
| gas furnace heater | 3/16/2010 |
| Q: We have a Carrier 58PAV gas furnace. It stopped working recently. I used multimeter to test the ... A: Is there a screw in fuse in the power box ?? That is standard in certain areas. Also, the power ... | |
| gas furnace no light | 3/16/2010 |
| Q: My carrier model number 28rc030010 is not working when i go to turn the heat on. the a/c unit runs ... A: On a call for heat a draft motor should run first on a board controlled furnace. Soon after an ... | |
| Rheem Thermostate | 3/15/2010 |
| Q: I am replaceing a Rheem #41-20804-15 thermostate with a honeywell RTH7500. The wiring on the Rheem ... A: I presume you have a heat pump - right ?? Maybe not? There is a difference ya know. The Rheem ... | |
| Noisy old gas furnace | 3/15/2010 |
| Q: I have an "Airco AH-115" gas forced-air furnace, which is probably 30 years old. It makes a loud ... A: Time for a little overhaul. With the power off, cut the wires to the blower motor at a concenient ... | |
| hvac | 3/1/2010 |
| Q: am am basically a qs now in an mep project.can u please explain to me how the hvac system works in a ... A: I''ll try. Here goes: The freon is R 11. A compressor pumps it to a high pressure & turns it into ... | |
| air condition | 2/28/2010 |
| Q: My air-con is not blowing cool air..The compressor fan runs for a minute or so before it stops. I ... A: There are too many things that can go wrong with this stuff to really know why it quit. I would feel ... | |
| fan not working | 2/25/2010 |
| Q: Nothing works, I have replaced the thermostat, still nothing. I have 240 vac to the outside unit, ... A: The source of the control circuit is a transformer in the furnace. Turn the fan switch only to ON. ... | |
| goodman phkj036-1f heat strip | 2/25/2010 |
| Q: i have a goodmans phkj/phk 036-1f packaged unit, it didnt come with a heat strip i went and bought ... A: Sure a lot of wires to those connectors. All you need to power a 5kw element is 240 volts(2 wires) & ... | |
| Cold Air Return | 2/22/2010 |
| Q: I have a cole air return built into the steps going from kitchen up to my living room and when the ... A: Is this a new problem, or been there awhile ?? Air moves because of a different pressure or weight. ... | |
| Install Fan Timer Control Circuit Board | 2/21/2010 |
| Q: I have a couple of questions regarding installing the Fan Timer control circuit board (Model Number: ... A: Holy mackeral Jonathon, that wiring is waaaay beyond me ! I can't imagine removing circuits from ... | |
| Heil package unit | 2/19/2010 |
| Q: When the heat runs, I am getting a very bad electrical smell out of the vents. The wires all around ... A: Me again. Just thinking of the possibilities & thought that a stopped up flue,( even on the roof ... | |
| Led code 6 + 1 flashes HELP ME PLEASE!!! | 2/19/2010 |
| Q: I came home from work about an hour ago and my house is freezing. Thermostat is on and set but my ... A: The lockout after 4 tries can be about anything in the sequence of events that has to take place ... | |
| Heil package unit | 2/19/2010 |
| Q: When the heat runs, I am getting a very bad electrical smell out of the vents. The wires all around ... A: back online after a bit of oral surgery. Thanks for asking me. Is the combustion motor running full ... | |
| where is the reset button? | 2/13/2010 |
| Q: I have a Bryant compressor model 561CJ030-D and I cannot find the reset button. The furnace/AC will ... A: If the furnace won't turn on there is no reset button to punch, maybe. Tell me what knd of furnace ... | |
| no aux heat when in defrost | 2/12/2010 |
| Q: I have a heat pump. The indoor unit is Bryant 517EN030 with electric aux heat. I have noticed that ... A: That 49 amps is the rating for 2 5 kw heat elements. So they are turning on in defrost cycle. The ... | |
| furnace#ff79 | 2/11/2010 |
| Q: I can't find the electric shutoff switch?? Have been all thought the house?? Is it posible it dosent ... A: This is a gas furnace ? A code requirement is to have a switch near the furnace somewhere. The ... | |
| Furnace runs but control goes to lockout | 2/11/2010 |
| Q: I have a Johnson controls G779lha-1 control that goes into lockout about every 12 hours. According ... A: these darned solid stae stuff is a pain.The ONLY thing contolling the heat is the ignition module. ... | |
| floor furnace | 2/10/2010 |
| Q: I have a suburbun floor furnuce #ff79 for one I can't find the electric cutoff switch? Is there a ... A: Insure that the pilot flame is impinging on the top 3/4" of the thermocouple. You may have a clogged ... | |
| Weathermaker 9200 Flashing Code Lights | 2/9/2010 |
| Q: With the thermostat in the on position, there is no response at the furnace. There is a standard ... A: Sory Richard I don't have the codes meaning. Check on the inside of the lower furnace door or on the ... | |
| Strange noise from gas pack | 2/8/2010 |
| Q: Recently when our 9 year old Trane gas pack starts it makes a strange buzzing noise. The noise is ... A: Is this an auto ignition pack ?? If so, you have a combustion air motor running as soon as a call ... | |
| Combustion or Ventor Motor operation | 2/8/2010 |
| Q: I have a York Diamond 80 Ultra (2 stage) furnace. Lately we have notices a slight burning smell from ... A: Can't believe the circuit board would not detect no draft motor. The air from that is what operates ... | |
| Carrier Heat Pump Issues | 2/7/2010 |
| Q: Howard, I have a Carrier Heat Pump System. It’s about 5 years old and has functioned ok until this ... A: You must be Waaaaay out in the country ??? Ther buzzing transformer is emmitting a 60 cycle hum & ... | |
| Trane XE-70 - No heat. | 2/7/2010 |
| Q: I have a Trane xe 70. The Heat is not turning on. The igniter will glow but NO gas or blower. I turn ... A: The next event after the igniter is the gas valve opening. Need to check the voltage across the gas ... | |
| Carrier Heat Pump Issues | 2/7/2010 |
| Q: Howard, I have a Carrier Heat Pump System. It’s about 5 years old and has functioned ok until this ... A: what a lot of trouble you have had. First thing, the 5 amp fuse blew from a short in the 24v circuit ... | |
| weak air flow | 2/6/2010 |
| Q: I have three vents in my bedroom and the air blowing out seems to be very weak. the temperature is ... A: The airflow canbe adjusted by adjusting the supply air grilles, starting near the furnace & working ... | |
| New Honeywell RTH 7600 Thermostat not working | 2/5/2010 |
| Q: Having problems getting a new Honeywell RTH 7600 thermostat to work properly. My System: - Nordyne ... A: Alex, you have run nto a problem since the new heat pump thermostats don't seem to be compatible ... | |
| ac/heatpump compatibility | 2/5/2010 |
| Q: My outside unit was stolen and an outside unit of unknown capacity is available. My assumption is ... A: You can have a 6000 bty (1/2 ton) difference with no problem. Nameplates may not indicate whether a ... | |
| Bard Furnace | 2/2/2010 |
| Q: I have a Bard electric furnace that came with the house. It is 13 years old. The problem is that ... A: Electric furnaces have sequencers that control a heating element & the fan.Also have overheat ... | |
| Circuit Board Replacement | 2/2/2010 |
| Q: I have a 13 yr. old Trane XL 1100 combination unit. Recently when the heater would go on, the ... A: You can do it easily Michael. Even my son-in-law that is an Indian on thr eservation did it. One ... | |
| iced over heat pump | 1/31/2010 |
| Q: We have a heat pump in Maryland in a unit that we just purchased (I am in New York). In January the ... A: The iced over senser is not working. Needs a repair job. Meanwhile you have an emergency switch on ... | |
| Convert 90% furnace to 80% | 1/31/2010 |
| Q: can you convert a 90% furnace to an 80%. I can not run pvc pipe for the vent and need to use the ... A: Don't have a clue what physically makes the difference between the 2 efficiencies. But a flue is a ... | |
| Rheem Criterion II furnace will not start | 1/30/2010 |
| Q: I have a Rheem Criterion II furnace that was bought in 2004 with a Honeywell thermostat that we ... A: Just reviewedthe question & answer for a similar problem. Need to determine the flashing light code ... | |
| UV Treatement | 1/29/2010 |
| Q: I just had a company take a look at our HVAC systems. They indicated that we need to clean the ... A: If you have kept a clean air filter in the furnace you shouldn't need the coils cleaned after 5 ... | |
| Superior fireplace burner problem | 1/28/2010 |
| Q: we bought this house last summer that has a Superior DR 500 CMN fireplace insert. The pilot light ... A: So you have a gas valve controlled by a thermocouple. The thing that usually is bad is the ... | |
| HVAC Fan won't turn on... | 1/27/2010 |
| Q: I just replaced the thermostat and it is doing the same thing the last one did where it clicks to ... A: No fan either when the fan switch is turned on ?? Could be a dead fan motor? Jump across the red & ... | |
| York HVAC transformer heat-up | 1/26/2010 |
| Q: The blower motor and run capacitor on my 20-year-old York gas furnace were replaced earlier in the ... A: Sure can't find any rtelationship between the transformer & the blower motor. But electricity can do ... | |
| furnace shuts off | 1/24/2010 |
| Q: the amana 90 furnace will start and run for about 2 seconds than shut off. the red light will blink ... A: A quick shutdown ussually is a faulty flame senser. I'd try cleaning it with a rag first & then ... | |
| heat pump | 1/23/2010 |
| Q: I have a 2 ton, split system heat pump (Goodman) unit that is about 3 years old. My home is new ... A: Wow, what a mess ! If you have a 2200 sq ft, 2 story condo with a 2 ton heat pump system you.ve ... | |
| home heating problem | 1/23/2010 |
| Q: The master bedroom and adjoining ensuite in my home don't seem to heat up as well as the rest of my ... A: This is a duct system problem. If you have dampners in all the ducts at the supply plenum you can ... | |
| central eletric furnace | 1/23/2010 |
| Q: My neighbors heat wont come on. She has a, colman central electric furnace.For manufactured modular ... A: There are control circuit sequencers that control the heat, one for each element.Probably have the ... | |
| HVAC emergency heat? | 1/22/2010 |
| Q: I have all electric power and a heat pump. I have figured out that the fan blades on the pump are ... A: Whatever temp you set for heat the compressor will TRY to supply that temp. If the 1st stage (the ... | |
| Intertherm gas furnace flue replacement | 1/21/2010 |
| Q: You mentioned that replacing the flue on my Intertherm furnace[model MGHA-066AAFC-01] was doable and ... A: I've had a telephone wire break & was down for 5 days. When that happens on U Verse, you lose fone, ... | |
| Intertherm gas furnace burner | 1/13/2010 |
| Q: my Intertherm gas furnace{model MGHA-075AAFC-01} has a flame from the burner that acts as if a ... A: You can replace the flue but get ready for some labor. All the screws that hold the flue pipe to the ... | |
| furnace | 1/13/2010 |
| Q: Is there a special setting for the air shutter on my furnace in the winter time. It runs for a while ... A: Could be a high temp switch turning it off. You have a new air filter in the furnace ?? Could be a ... | |
| Intertherm gas furnace burner | 1/12/2010 |
| Q: my Intertherm gas furnace{model MGHA-075AAFC-01} has a flame from the burner that acts as if a ... A: OK Joe, so much for that !Good job checking that out. All the symptons of a hole. Next is that the ... | |
| Armstrong Ultra V tech 91 | 1/11/2010 |
| Q: I just got back from a week on the road. My thermostat was set at 60 while gone. When I returned I ... A: These furnaces diagnose the problem with a blinking LED. Count the number of flashes & find the code ... | |
| Coleman Package Unit Wiring | 1/9/2010 |
| Q: Well it's getting too cold here in Florida - We own a Coleman Mobile Home Model PHP036H1321A and ... A: Can give you general info only.The white wire control circuit connects the the bottom terminals on ... | |
| nordyne furnace melted wire | 1/8/2010 |
| Q: I have a nordyne e2eb-015hb and the wire that runs from the relay to the fusible link attached ... A: Its not the insulation on the wire, it is the wire size for the current load. That wire is carrying ... | |
| HVAC ductwork...critter proof? | 1/8/2010 |
| Q: Have been waking up in the middle of the night the past 6 months to the sound of a critter ... A: I'll guarantee those critters are INSIDE your ducts. Hardly nothing to stop them & they love that ... | |
| squirl cage | 1/7/2010 |
| Q: how to remove and clean on a ducane #cmpb100u4 A: Cut the wires to the motor at a convenient place they can be spliced again with wire nuts. Find the ... | |
| nordyne furnace melted wire | 1/7/2010 |
| Q: I have a nordyne e2eb-015hb and the wire that runs from the relay to the fusible link attached ... A: The wires are melting from a rusted terminal. Clean the terminals with a wire brush or anything ... | |
| aux. heat | 1/7/2010 |
| Q: i have a heil phf048k000a single package heat pump. auxiliary and emergency are not working. has ... A: A tricky question. Try manually pushing in the contactor. If it runs OK it is a control circuit ... | |
| Heil Gas Furnace starting problem | 1/6/2010 |
| Q: I have a Heil gas forced air furnace Model NTC5075BFC1 in my home and this is my problem: When the ... A: Thats why I don't like electronics to control furnaces. It takes remove & replace to diagnose a ... | |
| ac/heater unit noise | 1/6/2010 |
| Q: I have a new comfort maker ac unit. It whistles. Louder as it starts and stops and but a constant ... A: The whistle is from an air leak somewhere around the blower case. Air pressure is increasing as the ... | |
| Intertherm gas furnace burner | 1/6/2010 |
| Q: my Intertherm gas furnace{model MGHA-075AAFC-01} has a flame from the burner that acts as if a ... A: You have a hole in the heat exchanger. Best NOT USE IT until it is confirmed a hole since carbon ... | |
| American Standard Freedom 80 | 1/5/2010 |
| Q: I have an American Standard Freedom 80 that has been blowing cold air. The light is blinking 2 ... A: He isn't being too honest charging that much for a senser. Coarse it was Sunday though. You need to ... | |
| york gas furnace | 1/4/2010 |
| Q: My york gas furnace burner shut off before the blower kicks in. The ignition is fine and the burner ... A: Missed on that one, Charley. That is a perplexing problem without a definite solution. Have had ... | |
| tempstar | 1/4/2010 |
| Q: The unit has been knocking a middle breaker on it out side. I can put the breaker in and it seems ... A: circuit breakers can have a loose terminal that can cause it to open, or it can be a bad breaker, or ... | |
| cold air returns | 1/4/2010 |
| Q: I had a payne furnace and all new duct work put in this summer, winter is here in Mich. and my ... A: Wonder what thickness insulation was used for the flex ducts. Up there, it ought to be 2" at least ... | |
| Ruud Silhouette II Cycles | 1/3/2010 |
| Q: I have a Ruud Silhouette II that is just over 5 years old. It will kick on for a few minutes, then ... A: First, the blower is on a separate timed circuit. I've see this problem before Kris & found it a ... | |
| gas furnace | 12/31/2009 |
| Q: I have a 10 year old Bryant gas furnace that keeps locking out. Then I shut it off for a few hours ... A: is this a circuit board controlled furnace ?? Or just a ignition module only ?? A board control has ... | |
| Model E2EB-015HB | 12/29/2009 |
| Q: I am helping a neighbor out with his furnace. The unit will turn the indoor fan motor on(in auto on ... A: The heating an motor is turned on by a heat sensing reay If this is a standing pilot type furnace ... | |
| Gas furnace wont' ignite | 12/29/2009 |
| Q: I have an American Standard Freedom 80 gas furnace. When I try to get it to kick on the blower fan ... A: There is a sequence of events that has to happen before the gas lights. Can you tell me which of ... | |
| gas furnace issues | 12/28/2009 |
| Q: The pilot light turns on but the burners do not ignite (sometimes)it is a Coleman furnace ... A: If the pilot tight stays on the thermocouple is OK. Is the gas valve knob turned to ON ?? Is the ... | |
| Forced hot air natural gas furnace w/AC | 12/27/2009 |
| Q: I am building a full basement 2-story colonial (2600 sq ft located 1500' from the ocean. Receiving ... A: Now thats GOOD info, Kevin. Thanks. You will regret not having 2 units. I get complaints all the ... | |
| Furnace fan run continuous | 12/26/2009 |
| Q: Livingston~ I have a new goodman furnace with a honeywell stat. The problem is that the heat ... A: John. Our blizzard has passed thank you. You are "resetting" the circuit board John, disconnecting ... | |
| Forced hot air natural gas furnace w/AC | 12/26/2009 |
| Q: I am building a full basement 2-story colonial (2600 sq ft located 1500' from the ocean. Receiving ... A: Need clarification Kevin being a Texan not having basements. Is this a 3 story house( 1 story ... | |
| A./C noise | 12/25/2009 |
| Q: When A/C is running, there is a loud whooshing / slurping type noise in wall(bedroom wall where ... A: Need to tet the freon first. You may have a valve control of freon to the evaporator coil & it could ... | |
| wall furnace inop. | 12/24/2009 |
| Q: I am attempting to put back into service a fan type wall natural gas wall furnace. It is made by ... A: Usually there is a manual reset high temp. switch that will trip on overheat, like you had when the ... | |
| HVAC | 12/24/2009 |
| Q: I have an all electric condo in NY, GE forced hot air heat and a.c. It is the original system from ... A: There is a liquid you can inject into the system that can stop a leaking evaporator coil, lke you ... | |
| GMP furnace--Induced draft motor will not fully start | 12/23/2009 |
| Q: I have two Goodman GMP series furnaces (about 1995 models)installed at the same time in 1996 and ... A: Usually don't get enough for a decent answer. The black modules are relays. One is for the blower ... | |
| Ruud Deluxe 90 furnace issue | 12/23/2009 |
| Q: I have a Ruud Deluxe 90 furnace. I'm in Wisconsin, so it's a bit cold outside. I keep the temp at ... A: The list of events that have to occur before the furnace lights is a bunch & ya know anyone thing ... | |
| Cold air flow through intake vent | 12/22/2009 |
| Q: My 2007 home has a metal elbow connected to a vent from outside to allow air intake for the furnace ... A: Combustion air to sustain fire is an unbelievable amount.So cold air is being sucked into the vent. ... | |
| humidifier | 12/22/2009 |
| Q: Just changed the water panel in my 1 year old Aprilaire 700 humidifier. Followed all the directions ... A: Is there a float in this model ?? Can it be stuck ?? Or maybe the solenoid valve is stuck ?? ... | |
| Heat Strip installation when Gas is shut off! | 12/21/2009 |
| Q: It's not overly-ambitious, I am doing it right now. Because I owe the gas company about $1500, ... A: 10 gauge is good for 30 amps. Go directly from the 60amp double pole breaker to the elements in ... | |
| Heat Strip installation when Gas is shut off! | 12/20/2009 |
| Q: It's not overly-ambitious, I am doing it right now. Because I owe the gas company about $1500, ... A: Now I see the strips. And see you have altready mounted the strip on the plenum So you have 3 5kw ... | |
| Heat Strip installation when Gas is shut off! | 12/20/2009 |
| Q: It's not overly-ambitious, I am doing it right now. Because I owe the gas company about $1500, ... A: Do I see 2 electric elements on that plate ?? I can see 2 high temp switches. If that is true, the ... | |
| Heat Strip installation when Gas is shut off! | 12/19/2009 |
| Q: It's not overly-ambitious, I am doing it right now. Because I owe the gas company about $1500, ... A: Man, you got problems. Does the 15 kw strip mounted on a metal plate ? If so, there will be a limit ... | |
| Heat Pump Size | 12/19/2009 |
| Q: We have split style home, 1800 sq feet above ground level with a 300 sq feet of additional living ... A: Since you don't need any cooling all you need is a gas furnace, not a heat pump. That uses a ... | |
| Payne Heat Pump | 12/18/2009 |
| Q: I have a Payne Split System Heat Pump 13 SEER R-22 that's about 3 years old. While it seems to be ... A: Thats condensate water from the evaporator coil, which the outside unit is when on heat. That ... | |
| 13 seer vs 14 | 12/18/2009 |
| Q: Is a 14 seer a better choice evn if the $1500 fed credit does not amtter? The quote for the 13 is ... A: Best judge is to compare the run amps between the 2. Look at the nameplate for the answer. You ... | |
| heating furnace, forced air | 12/17/2009 |
| Q: Trying to figure out correct BTU size for purchasing new furnace. Total living space of my 15 year ... A: Well, you just can't guess heat loads. If the guy has run a heat load analysis go for it. If not, ... | |
| Thermostat / Gas Furnace quits at night | 12/17/2009 |
| Q: I have a Honeywell RTH230B thermostat - under a year old- and a Rheem Criterion II gas furnace- ... A: Need to verify the accuracy of the thermostat. Jump across the red & white wire for heat & see if it ... | |
| Furnace will not light burners | 12/16/2009 |
| Q: My furnace is 26 years old. I just spent $700 a few months ago. My problem now is when the heater ... A: Any burned looking terminals on the wire ?? A .oo1 " gap is enough to disconnect a current. The ... | |
| Rheem furnace doesnt cycle right | 12/15/2009 |
| Q: I have a Rheem Criterion furnace. It is not cycling correctly. When the the thermostat calls for ... A: NOT the flame senser, Brian. Difficult to not have suspicions about the thermostat since all the ... | |
| goodman furnace wont fire off | 12/15/2009 |
| Q: I recently got a call about a furnace that would'nt fire so It seemed to me that the gas control ... A: Does the fan motor run when thermostat switch for fan is tuened on ?? If it still hums, manually ... | |
| heating a townhouse | 12/15/2009 |
| Q: We have a heat pump and a three-story townhouse. The basement (1st floor) is very cold. There are ... A: Is the furnace in the basement ?? If so you can open up the supply air plenum with an adjustable ... | |
| elec. heaters central thermostat control | 12/13/2009 |
| Q: Greetings Howard: I recently returned to using the baseboard elec. heaters that have been in my ... A: Can be done with contactors controlled by a 24volt control but you are still limited by the current ... | |
| forced air seems half speed after new blower motor installed | 12/13/2009 |
| Q: My system is a heat pump with electric back-up unit. The blower motor was going out and I had it ... A: There are maybe 4 wires on the motor. For a 240 v motor the high speed is black & white. Or could be ... | |
| Furnace not working | 12/11/2009 |
| Q: I have a Janitrol GMP075 that has a heat pump that snitches to propane at a pre-selected ... A: How;s the voltage to the gas valve ?? Is the gas pressure at the valve about 12" water ?? The ... | |
| heat pump/gas furnace combo | 12/10/2009 |
| Q: I have a Johnson furnace/heat pump combo. the heat pump does all right but I would rather the gas ... A: A heat pump ya know, uses the compressor heat ad 1st stage, the furnace the 2nd. When the ... | |
| travel trailer furnace | 12/10/2009 |
| Q: fan comes on,ignitor begins clicking,and I actually seen it sparking,it tries to inite,but then goes ... A: So the pilot gas must be on but maybe the pilot orifice is stopped up or the spark is not jumping ... | |
| Air Intake Pipe Freezing Shut | 12/9/2009 |
| Q: Our Air intake pipe for the HVAC keeps freezing shut each night. Once this happens the gas to the ... A: Hey, move to Florida ! Gotta have heat to stop this. Is there any inside room the fresh air could ... | |
| payne heater pressure release valve | 12/9/2009 |
| Q: , recomends to check vent and if there are high winds.. where is the pressure valve located and ... A: The pressure valve is located at the end of the tube from the combustion air draft motor. When it ... | |
| heat sequencers | 12/8/2009 |
| Q: Good Morning, I have been working one season on the heating so far. I have been getting ... A: Sorry I don't have any schematics. But its not that hard. A call for heat activates several ... | |
| No Heat on a Gaffers and Sattlers Furnace | 12/8/2009 |
| Q: It's an old G&S Model U60 that will not fire. I got the problem narrow down to the Pilot/Flame ... A: Not sure about that "flame switch" But for sure the pilot flame has to activate the switch to supply ... | |
| Air circulation | 12/8/2009 |
| Q: I appreciate it. I have a small home in the foothills West of Denver, CO. I have recently installed ... A: Ought to be a thermostat available for heat only with a fan switch on it. You'll have to add a green ... | |
| Duct size for 5 ton | 12/7/2009 |
| Q: for a 5 ton unit what size duct should i run from the unit. The house is 45 feet long what size ... A: An extended plenum starts off the same size as the supply air opening is from the furnace. But ... | |
| heater doesn't work when it's cold | 12/7/2009 |
| Q: Numerous "heater guys" came by and none of them know what to do. I am desperate. My heater works ... A: is this a heat pump ?? I'm in Arlington. Have just learned today about a heat pump is doing what ... | |
| Losing Flame!? | 12/7/2009 |
| Q: There are three HVAC units and two gas fire places in my home. They were all installed in 2006 ... A: Sounds like you have solved the problem yourself. Need to run gas pressure tests at the downstream ... | |
| New Furnace Problem | 12/6/2009 |
| Q: Furnace Model: American Standard Freedom 80 Single Stage ADD1B100A9451A 100000 BTU Thermostat: ... A: A heater requires 1 sq in per 1000 btu's. Got that much ?? I so it could be in the return air ducts ... | |
| Ruud furnace blower continues to run | 12/5/2009 |
| Q: Howard, I have a Ruud Silhouette furnace - model # UGDG-07EAUER. It is 15 years old. The system ... A: If the flame senser was not working right the flame would go out in seconds, not minutes. Where is ... | |
| over amping | 12/5/2009 |
| Q: I'm working on a magnaflow airhandler,( 2 ton, 24b hffx model) twice the blower motors burned ... A: SEVEN AMPS !!! No wonder it fried. How's the run caacitor ?? The correct size for the motor ?? ... | |
| New Furnace Problem | 12/4/2009 |
| Q: Furnace Model: American Standard Freedom 80 Single Stage ADD1B100A9451A 100000 BTU Thermostat: ... A: You have a good thermostat but I would question it from what's going on with the furnace ... | |
| "OOOOH" sound at end of cycle in evening | 12/3/2009 |
| Q: Heat Pump HP22-411 (1992) makes an "oooooh" sound at end of cycle--heating or cooling late in ... A: I gotta make a educated guess on this one. Never heard a sound like that. Bet it is freon rushing ... | |
| 5 ton heat pump popping breaker | 12/2/2009 |
| Q: We have a 5 ton heat pump package unit in a car repair shop that we recently purchased. The unit is ... A: Just sent an answer to your reply. Still say now need a larger breaker. Look on the nameplate for ... | |
| heat pump | 12/2/2009 |
| Q: I have a 2-1/2 ton Luxaire made by York I think. Heat pump runs and operates ok but does not stay ... A: Thinking more about feeling the compressor with your hand open ,layit on top of the pot. If it is ... | |
| 5 ton heat pump popping breaker | 12/1/2009 |
| Q: We have a 5 ton heat pump package unit in a car repair shop that we recently purchased. The unit is ... A: Start off tightening the terminals on the breaker & on the outside unit at the contacto & the ... | |
| Summer switch - furnace fan. | 11/24/2009 |
| Q: We had a new gas furnace installed a few months back and the installer added a "summer switch" to ... A: About 35 years ago a Summer fan switch was standard on a furnce. Not any more. All you need to do is ... | |
| Rheem furnace control board problem | 11/23/2009 |
| Q: I live in Houston and have a 17yr old Rheem furnace in the attic. Last winter I had problems and it ... A: The trouble seems to be caused by a flame senser but you have replaced it already.Are there any ... | |
| Call for Heat | 11/23/2009 |
| Q: I have a (mid 1990s) Heil NUGS100BH03 furnace which stopped working a few weeks ago. As I am new to ... A: The missing link is the air pressure switch. That has to close from the air(or vacuum) from the ... | |
| American Standard Furnace | 11/22/2009 |
| Q: AS Freedom 80 Furnace - Blowing Cold Air - Warning light flashing 9 times. Just purchased house a ... A: Dang David,you pulled all those wire s?? I can see the brown around the resistors but usually when ... | |
| American Standard 5000 | 11/21/2009 |
| Q: my 16 year old AS 5000 upflow heating unit quit heating during the night. I have performed the ... A: The draft motor closes an air pressure switch, THEN the igniter glows. Got to be the pressure switch ... | |
| Pilot won't stay on | 11/21/2009 |
| Q: I have a Trane XE60 that the pilot light will go out after running heat for a little while. I have ... A: Try adjusting the pilot flame at the pilot adjutment screw on the gas valve to be a bit stronger.Be ... | |
| American Standard Furnace | 11/20/2009 |
| Q: AS Freedom 80 Furnace - Blowing Cold Air - Warning light flashing 9 times. Just purchased house a ... A: Somebody got ripped off bad on the igniter !! Glad you didn't. Those darned circuit boards do ... | |
| Gaffers & Sattler Furnace Doesn't Fire-up | 11/19/2009 |
| Q: We had the digital thermostat set to "Off" over the summer. After setting it back to "Heat," when ... A: This is a goofy question but the place to start. Is the gas valve turned to ON ?? Need to test the ... | |
| Squirrel cage and circuit board | 11/19/2009 |
| Q: We recently had a company clean our Lennox G20 series furnace and ducts. The next day, our furnace ... A: I do not recommend duct cleaning. Have seen damage done while cleaning too many times. Did the ... | |
| Old furnace with possible electrical problems | 11/18/2009 |
| Q: Livingston, We just moved into a house with a 20 year old furnace (model NUGE100AG01 - not sure of ... A: Well hello Adam. Now lets see whats going on here.Start with #1.Could be worn bearings. Are there ... | |
| residential gas furnace | 11/17/2009 |
| Q: I have a Gaffers & Sattler's furnace which keeps popping everytime it lights up the burners. ... A: The flame runner needs cleaning. Plus the leftburner probably has a hole stopped up right at the ... | |
| Fraser-Johnson HVAC fan system | 11/17/2009 |
| Q: My heater fan motor oscillates on and off while the gas burner stays on when I increase the ... A: The capacitor may be in the electrical area by the burners or look at the moroe wires & there will ... | |
| American Standard Gas Furnace Issues | 11/16/2009 |
| Q: Howard, I have a Amer. Standard furnace with a White Rodgers board in it. Service tech told me that ... A: Sounds like the 2nd thing on the heat sequence is faulty, the air pressure switch. The blower auto ... | |
| american standard freedom 70 propane furnace | 11/14/2009 |
| Q: our furnace is 9 years old. It is american standard freedom 70 propane with one zone. Recently, ... A: The blower is on a separate circuit & will activate the fan when you call for heat. Main problem is ... | |
| ac ducts cleaning | 11/14/2009 |
| Q: We lived in our home for 32 years when it was built. The AC ducts have never been cleaned. I have ... A: I don't think duct cleaning does any good. You have 3 filters that removes most of the dust. The air ... | |
| Coleman Furnace Model 7680B Series 856 | 11/13/2009 |
| Q: My gas furnace will bring the temperature up to the thermostat's temperature setting but then it ... A: I presume the furnace is controlled by a circuit board. Correct ?? Is just the fan doing the ... | |
| AC Turns On by Itself | 11/11/2009 |
| Q: Our 4 ton central AC turns on by itself, even though the temperature does not warrant it. For ... A: The thermostat controls the blower when on cooling. If you have a digital thermostat it has the ... | |
| AC Unit.... what to do??? | 11/10/2009 |
| Q: I'm very confused about a problem with my outside AC Unit and would be really grateful to hear your ... A: Best be fixed Juliet.It won't last too long with bad bearings. What happens when you spin the blades ... | |
| AC blower turns on by itself | 11/8/2009 |
| Q: With the fan switched to auto, heating and cooling in off position. the fan intermittently turns on ... A: Wow, Ralh, thats really weird. A circuit board controlled furnace has a timed circuit for blower ... | |
| Trane XR90 Will not turn on. | 11/7/2009 |
| Q: I recently installed a programable thermostat for my Trane XR90 furnace. Once it was installed, I ... A: And here you thought you were improving the tstat, huh ?? It happens, Michael. You need to test ... | |
| Gaffers Sattler furnance model ACD12-U100 | 11/6/2009 |
| Q: The pilot had blown out during a Santa Ana wind without me knowing it. When I tried to turn on the ... A: Well Steve, the favorite question is : Did you turn the gas valve knob to "ON" after lighting the ... | |
| Furnace burner not lighting | 11/6/2009 |
| Q: I have a Carrier 58PAV/RAV upflow HVAC unit...when I adjust the thermostat, the unit kicks on, the ... A: Don't have knowledge of those codes Derrick. Could be a failed igniter or a pressure switch. Try ... | |
| nordyne heater E2EB015HA | 11/5/2009 |
| Q: The elements are getting hot but part of the time the blower will not come on. What controls the ... A: Something fishy here. Need to test just the motor. Remove the motor & blower case. I just cut the ... | |
| contaminated heat pump | 11/4/2009 |
| Q: wife and i purchased a new rhemm central heating and air system back in febuary of this year(2009), ... A: Wow, Glenn, that is a terrible mmess !! How did that water get in the system ?? A teaspoon will ... | |
| leaking condensate. | 10/28/2009 |
| Q: I have a Heil DC90 furnace mounted horizontally in a crawl space. I have water driping from the ... A: Is there not any crawl space vents around the foundation ?? So all your combustion air supply is ... | |
| Aux Heat On | 10/25/2009 |
| Q: I have a Honeywell Vision Pro TH8320U thermostat controlling a heat pump and oil fired furnace (as ... A: First stage heat is from the outside unit. It is sensing that unit is not running. Check that out on ... | |
| Gas Furnance Issues | 10/23/2009 |
| Q: Before I begin, I want to thank you Mr. Howard for answering my question. Well, I have a gas ... A: That kind of furnace, controlled by a circuit board, starts thre heat cycle with the induced draft ... | |
| Gas space heater | 10/23/2009 |
| Q: I have a vintage "Brilliant Fire" gas space heater in my log cabin that has been there for many ... A: Know what you're saying about the backfire at shutdown. I'm not really sure but think it is a gas ... | |
| propane furnace problem | 10/22/2009 |
| Q: I have a Carrier Weathermaker 9200 that will not work, it is my secondary heat source with a new air ... A: Transformer is OK.I would pull the wires on the inducer motor & test it with 120v.That motor ought ... | |
| Rheem Gas Furnace | 10/21/2009 |
| Q: I am having an issue with my Rheem Gas furnace #80PJ07EAR01 4yrs old. My issue is this: the inducer ... A: Wow, Josh. The things gone wild !! All I could add is test the voltage at the gas valve & see if ... | |
| fan motors blowing circuits | 10/21/2009 |
| Q: We have installed 4 2hp motors with trunking in our church attic to ensure ventalation, ALL on ... A: I can imagine there is something wrong with the start windings from manufacture. Can you get ... | |
| R22 hvac | 10/20/2009 |
| Q: I am building a house. The builder charged me to put in an unspecified hvac unit. After the fact, ... A: I am not up on prices these days since I have retired for several years. R22 units are being phased ... | |
| inverter | 10/20/2009 |
| Q: I have a small print shop of 12,00m2; there is no heating in it. I bought an inverter air condition ... A: Don't think the pipe size difference would do anything. The heating watts sure is small for the size ... | |
| HVAC | 10/19/2009 |
| Q: We have a house built in 2003 with a second floor and central heat / AC, full basement, and 2 return ... A: Ni Randy, good thinking ! Best to have 2 units for 2 story houses but gotta live with what you ... | |
| Bryant Plus 90 Upflow gas furnace | 10/19/2009 |
| Q: When my 1990's Bryant Plus 90 gas furnace starts up, only three out of four burners light. If I ... A: Check the flame runner that carries the fire to all burners. It can clog easily with dust, etc. ... | |
| central heating | 10/19/2009 |
| Q: When I cut my central heat on it blows cool air out and constantly runs until I shut the system off ... A: Check for shorted wires between red & green wires behind the thermostat. If, OK,there is a stuck fan ... | |
| HEIL NTC6125KJA1 gas furnace | 10/18/2009 |
| Q: I just turned my furnace on and... the flue fan comes on, the ignition system seems to work (the ... A: Each burner is 25,000 btu. 75k is good for a 3 ton cooling & a 1500 sq. ft. house. Short cycling can ... | |
| Gas Furnace Cycling | 10/17/2009 |
| Q: Miller LP furnace model M3RL-080-ABWT-will go through a heat cycle of igniting followed by fan ... A: I would start by jumping across the red & white wires behind the thermostat to test it out. If it ... | |
| Lennox G51MP furnace not responding to thermostat call for heat | 10/15/2009 |
| Q: We just switched our Lennox G51MP furnace to heat this morning, but it will not operate. The two ... A: The rollout switched usually have a red button that pops out. If not, it's not them. I'm not ... | |
| Lennox G61MPV trips breaker | 10/14/2009 |
| Q: Note: I'm traveling on business so the information I'm getting is from the wife and I'm trying to ... A: A tripped breaker sez there is a dead short somewhere.From what I gather this breaker controls the ... | |
| burners are cycling on and off | 10/14/2009 |
| Q: I am having a problem with the burners on my furnace. When the thermostat is calling for heat the ... A: Sounds like you have an older furnace without any of the solid state stuff. Right ?? If so, the ... | |
| hvac | 10/13/2009 |
| Q: We have a 992 sq ft home with a no day light basement also 992 sq ft. I am installing a wood stove ... A: You really can just turn on the fan switch on the thermostat to circulate hot air thru the existing ... | |
| furnace won't stay lit | 10/11/2009 |
| Q: My Trane XE80 gas furnace won't stay lit. I believe it was installed in 1994. It will run for about ... A: need to know which kind of furnace that is. Does it have standing pilot or is it controlled by a ... | |
| return air filter sizing | 10/11/2009 |
| Q: My question is "I know that it is bad to undersize your return air filter, but is it possible to ... A: I'm thinking a 4" will cut down the airflow too much. You can do a good job on the dust if you get a ... | |
| Fan will not shut off | 10/10/2009 |
| Q: I have a Heat Pump/Ac and electric furnace.....International Comfort brand I believe. Unit/House is ... A: Not good Paul. That black box on the board is the fan relay. But it is controlled by the time delay ... | |
| Burners won't stay lit | 10/2/2009 |
| Q: Single mom needs your help! I own a Dayton gas fired furnace, eight years old. Once again, when I ... A: got to help these Mom's. You have a flame sensor that need cleaning, It is a small metal rod that ... | |
| Sears wall furnace, low heat output. | 10/2/2009 |
| Q: I have a very old Sears Wall furnace(867.73342). It doesn't seam to have the proper heat output ... A: That carbon buil up is dangerous. That means improper combustion. The heat exchanger is probably ... | |
| RHEEM 80 Imperial | 10/1/2009 |
| Q: I have just purchased a house and the HVAC unit is a RHEEM 80 Imperial. It has worked well all ... A: Well, we wouldn't want a killing now, George ?? You're going to have to do some diagnosing George ... | |
| check valve v expansion valve | 9/30/2009 |
| Q: Howard, Is there a difference between an expansion valve and a check valve in the air handler part ... A: A check valve is necessary for the reverse flow of freon when calling for heat. Expansion valve ... | |
| wall furnace | 9/29/2009 |
| Q: The small cabin I recently purchased has a Sears Series 600 - Model 867 - wall furnace.. Pilot and ... A: Yo Tom, I'm not acquainted with that Sears model but can say those snap disc switches can be the ... | |
| heatpumpFreeon | 9/28/2009 |
| Q: Howard, Thanks for your reply. I don't think they would dare come on to the property again. What ... A: Have to have a chemical analysis run to find out about the freon. Still don't think that is your ... | |
| HeatPumpHumidity | 9/28/2009 |
| Q: Our ac, trane heat pump, was working great until a company came over to do a yearly maintenance. ... A: Humidity too high is usually caused by the cooling not running long enough per cycle to remove the ... | |
| Furnace wont reach desired temperature | 9/27/2009 |
| Q: I am having trouble with furnace. I turn furnace on with thermostat set at 68 degrees. The furnace ... A: Is this a digital t=stat ?? Sounds like the stat is way too sensitive. Usually are + or- 1 deg.but ... | |
| lites dim when A/C comes on | 9/26/2009 |
| Q: New house, 2.5 ton central air. Trane 13 seer condensor. When the condensor comes on, the lights in ... A: An option is to install a start capacitor on the compressor. That costs about $75. Will help some, ... | |
| HVAC | 9/25/2009 |
| Q: my husband has been trying fix the a/c and first the thermostat went out and he got and new one and ... A: Now thats the first time I have ever heard that name !! Interesting I get a LOT of questions ... | |
| lites dim when A/C comes on | 9/25/2009 |
| Q: New house, 2.5 ton central air. Trane 13 seer condensor. When the condensor comes on, the lights in ... A: Circuit to condenser not big enough. Is it on a separate circuit ? Should be. Read the nameplate ... | |
| HVAC | 9/24/2009 |
| Q: We have a York "Packaged" Heating and Cooling System, that is tripping the breakers at the main ... A: Hate to say it but that symptom usually indicates a shorted compressor. Easiest test to confirm is ... | |
| heil propane hot air furnace | 9/24/2009 |
| Q: i have a heil propane hot air furnace ,direct vent and it will not open the gas valve to let the gas ... A: The famous answer is "is the gas valve knob turned to on "? Does the igniter light a pilot light or ... | |
| Heating/AC Unit | 9/23/2009 |
| Q: I'm looking for general direction and advice as I try to help my parents who are interested in ... A: let's see what we can do for your folks. First thing is to run off the guy that bid $18,900 ! He's ... | |
| GE Zoneline Heat Pump | 9/22/2009 |
| Q: We've had this through the wall unit for about 15 years. It now sounds as if the compressor is ... A: I'm the kind that will try to get anything running again so you know my answer. If thats one of ... | |
| Condenser Fan Motor | 9/21/2009 |
| Q: My ac went out last night. I suspected the condenser fan motor, and I had that confirmed by a HVAC ... A: Good for you. See, you can do it. Everythibg OK since it runs. Only one thing, the capacitors need ... | |
| Condenser Fan Motor | 9/20/2009 |
| Q: My ac went out last night. I suspected the condenser fan motor, and I had that confirmed by a HVAC ... A: NEVER hammer on the end of the shaft. Sand the exposed shaft clean & add WD 40. With a crescent ... | |
| central air | 9/20/2009 |
| Q: I was told that it cost's more money to turn your central air off and on then it does to just adjust ... A: hope I don't start a tussle between you two by my answer ! Cooling the air does 2 things, first it ... | |
| Condenser Fan Motor | 9/20/2009 |
| Q: My ac went out last night. I suspected the condenser fan motor, and I had that confirmed by a HVAC ... A: $800 my God thats terrible. Tell him to bug off. Remove the motor & tajke it to the motor shop to ... | |
| Propane Heating System and Utility Room Smell? | 9/19/2009 |
| Q: We have moved into a home that is heated by a propane heating system. The heating system is located ... A: Tell ya its dificult to diagnose smells & stuff coming from the grille problems. Thanks for the ... | |
| heat pump defrost affecting ac function | 9/18/2009 |
| Q: I have a 3-ton Rheem hpne heat pump system. The outside cabinet is shutting off while the air ... A: Only reason I can imagine for the 5 min stop is a defrost signal. But the unit should reverse, or ... | |
| Ruud heat pump | 9/18/2009 |
| Q: We have an all electric Ruud Heat Pump. I saw someone else has white powder coming out of the vents, ... A: I know I've had that powder question before but can't remember the answer - if I had one ! The ... | |
| contol problem | 9/15/2009 |
| Q: I am a 2nd year HVAC student at a local community college. My neighbor ask me to look at her A/C ... A: 2nd try, Terry. I would test the output from the transformer in the furnace while running & stopped. ... | |
| Trane model BCHA - 90 fan assembly removal | 9/15/2009 |
| Q: During construction of this fairly new facility(1994), the Trane Air Handlers were all installed ... A: Another reason I don't care for Trane. I am not acquainted with that problem but doing service work ... | |
| contol problem | 9/14/2009 |
| Q: I am a 2nd year HVAC student at a local community college. My neighbor ask me to look at her A/C ... A: First thing I would do is put my open hand on top of the compressor after it runs & stops. I'll bet ... | |
| wireing on a coleman evcon EB12B | 9/13/2009 |
| Q: I replaced a HW 4700 with a HW RTH3100C. The old one had a wire labeled X, neither thermostat has ... A: Thermostas for heat pumps have changed terminal designations. I do not have wire circuits for ... | |
| Compressor run state | 9/13/2009 |
| Q: I have a package unit with a single compressor, controlled by a mercoid style t-stat. With the unit ... A: The contactor points may be burnt & not making good contact on first try. Check out the points & see ... | |
| Air ducts | 9/12/2009 |
| Q: I recently cleaned my air ducts professionally but this didn't solve my problem. The problem is not ... A: Air duct cleaning NEVER solves any problem. They usually create one. My humble opinion. Apparently ... | |
| lack of moisture | 9/11/2009 |
| Q: I live in Ontario,Canada mwhere the winters get cold and the house gets very dry.I had installed a ... A: I could be a wise guy & say move to Houston, TX ! Surprised that the floor heating dries out the ... | |
| AC unit not efficient | 9/1/2009 |
| Q: I have 2 AC units, one covering the first floor, the other for the second. Despite this, the house ... A: Sounds like the upstairs unit duct system is not too good. A good size unit in FL ought to be 1 ton ... | |
| AC unit not efficient | 9/1/2009 |
| Q: I have 2 AC units, one covering the first floor, the other for the second. Despite this, the house ... A: 2 story houses not too efficient due to the open stairway. High ceilings add to it also. Since cold ... | |
| Trane a/cs | 8/31/2009 |
| Q: A technician came out to check my 2 units. He said I had a leaking capacitor, show me a clear oily ... A: Not acquainted at all that there is another king of supply air plenum ?? To distribute air to the ... | |
| Bad Flame Sensor? | 8/31/2009 |
| Q: I have an Armstrong Air upflow gas furnace (model #G1N80BU075D16B) and it stopped working at the end ... A: Whoa, thats interesting ! You have a thermostat with a heat anticiator dial on it ?? Other than the ... | |
| Bad Flame Sensor? | 8/30/2009 |
| Q: I have an Armstrong Air upflow gas furnace (model #G1N80BU075D16B) and it stopped working at the end ... A: Nice to hear somewhere its getting cold again. Still Summer down here in Texas.This is my first ... | |
| Rheem RRKA-036 | 8/29/2009 |
| Q: I have a 10 yr old Rheem RRKA-A036jk06X A/C+heat unit on my roof. My problem is that I do not get ... A: Most al circuit boards have a 3 amo auto type fuse in a plug in socket. That is protecting the 24 v ... | |
| Approximate cost for coolant leak | 8/28/2009 |
| Q: Here's myOne of the pipes leaving our outdoor central AC unit and the pipe entering the blower are ... A: Anyone tried to locate the leak, Michael ?? There is a liquid you can inject that will seal small ... | |
| upstairs shut down | 8/28/2009 |
| Q: My boys are now sent off to college. I want to shut down the upstairs (which consists of 2 bedrooms ... A: I presume you have only one unit for 2 floors ?? If so, that return will suck in the hot air from ... | |
| Keeping heat pump; replacing furnace | 8/27/2009 |
| Q: I have a 25 year old Trane electric furnace that has been needing a lot of maintenance in the past ... A: Not really. Different brands heat pumps can be complex or impossible to wire the control circuit ... | |
| air handler wiring | 8/25/2009 |
| Q: My drain pan overflow turned into a float switch replacement that has become a wiring problem ... A: A 2 wire thermostat is only for heat. The ah for air handler refers to all the wire connections AT ... | |
| Armstromg Ultra V A/C blower and compressor will not run at same time | 8/25/2009 |
| Q: Our A/C stopped working yesterday. I've gone through a lot of on-line troubleshooting and here is ... A: Sounds lke a resistance problem.With a small load its OK, big load red, yellow, green too big. Seems ... | |
| air handler wiring | 8/25/2009 |
| Q: My drain pan overflow turned into a float switch replacement that has become a wiring problem ... A: Wel, Kevin lets see. I'll just give you what wires go where for C<R<G<Y<W from the air handler..C= ... | |
| cent air system | 8/24/2009 |
| Q: In a 40 yr old Payne heat/air can the cooling coil be replaced or repaired if there is a slight ... A: FOURTY YEARS OLD !!!! Good gosh, thats amazing. Once the evaporator coil starts leaking it needs ... | |
| ac problem | 8/23/2009 |
| Q: would my ac unit freeze up if it was one pound low on freon? does the cap on the freon fill valve ... A: I wouldn't be happy with that call either. Is it still making ice ?? That evapoator coil should be ... | |
| Zone control problem | 8/23/2009 |
| Q: I recently had a zone control setup installed on my Carrier AC unit/ furnace which is about 5 years ... A: I'm still at loss to figure this one out, Brian. Do yu have a variable speed blower ?? If not, I'm ... | |
| Zone control problem | 8/23/2009 |
| Q: I recently had a zone control setup installed on my Carrier AC unit/ furnace which is about 5 years ... A: A clunking fan on startup can be a loose setscrew. Ever checked that ? I am at loss to connect the ... | |
| Low voltage short | 8/23/2009 |
| Q: Son installed digital thermostat without pulling curcuit breaker......nothing comes on.....I assume ... A: The wires at the thermostat can't be shorted, all on the same side of the transformer.The fuse is ... | |
| replacement HVAC system | 8/22/2009 |
| Q: Howard, Thanks for your time. We are replacing our 15 year old split A/C and furnace as the E coil ... A: A varible speed blower used to COST $600 several years ago ! A 16 SEER probably adds $300 to 400 ... | |
| replacement HVAC system | 8/22/2009 |
| Q: Howard, Thanks for your time. We are replacing our 15 year old split A/C and furnace as the E coil ... A: Can't believe you had 2 foks using laptops to figure heat loads ! That eliminates all the opinions ... | |
| Amana Refrigerator | 8/20/2009 |
| Q: I just moved into a new house and have an Amana refrigerator. It has always worked but does not get ... A: I'm not an expert on refrigerators but undestand your problem. The freezer side vents cold air to ... | |
| Condenser replacement | 8/20/2009 |
| Q: I am installing a 3.5 ton 12 SEER condensing unit and I replaced the orfice in the evaporator coil ... A: The difference n orifice size between 3.5 & 4 ton is negligble. Just a few thousands. Don;t think ... | |
| Evaporator ices, compressor keeps running when control temp reached | 8/19/2009 |
| Q: I have a Trane XE 800 A/C with a new filter. When I turn on air at the thermostat, I get good air ... A: Check the freon in the heat of the afternoon. Feel the copper, big suction line outside. It should ... | |
| AC sizing | 8/19/2009 |
| Q: I have received bids back on new construction AC unit. The sizes of the units suggested vary fro 3.5 ... A: Have any of the bidders used a software heat load design ?? They have software duct design also. ... | |
| Should I replace system before it breaks? | 8/18/2009 |
| Q: My Trane system is 14 years old. My compressor stopped working last night but when I flipped the ... A: Can be the beginning of the end for the compressor when they trip the breaker. Usually worn bearings ... | |
| Vents & Filter | 8/18/2009 |
| Q: I am a asthmatic. The vents in my apartment keep attracting black stuff on the vents and on the ... A: This kind of stuff coming from the vents is hard to really diagnose. Have reports a lot of smells, ... | |
| Evaporator ices, compressor keeps running when control temp reached | 8/18/2009 |
| Q: I have a Trane XE 800 A/C with a new filter. When I turn on air at the thermostat, I get good air ... A: Don't dig why the thermostat is not turning off the cooling? Must be stopping the inside blower ... | |
| a/c noise | 8/17/2009 |
| Q: we live in a condo. When someone's or our a/c's compressor kicks on right before it go on it makes a ... A: Boy, Dee thats a new one ! Only thing I can imagine is the copper lines are touching a stud in the ... | |
| gas furnace pilot light | 8/17/2009 |
| Q: The pilot can be lit as per normal lighting procedures. When control is set to ON position the ... A: Wow, wish it was time for pilot lights down here in Texas !! 102 today. IF the pilot flame is ... | |
| airflow problem | 8/17/2009 |
| Q: Last year we had central Ac installed on the second floor (3 bedrooms). The first 2 rooms cool very ... A: I'm sure getting a lot of questions like yours. Bad duct sizing. Proper duct sizing comes from ... | |
| AC not working. Air handler seems ok | 8/16/2009 |
| Q: I live in FL in a 2 story home with 2 AC units, one for each story. All units seems to function ... A: Need to test the freon first off. Even without it running you can tell if the freon is needed. But ... | |
| moving air from woodstove | 8/16/2009 |
| Q: We have just built a new cottage. It is still all open walls so now is the time I would like to add ... A: If you could capture the heat from the stove directly above it, or close to, think it would be ... | |
| uneven A/C cooling in house | 8/15/2009 |
| Q: Three years ago I purchased a modified split level, 3 bedroom house (30 yo)- on the first floor, ... A: Difficult problem to solve, John. Have to tear apart the house to correct the duct system. Obviously ... | |
| condensation blowing out transformer | 8/14/2009 |
| Q: Replaced entire ac system w/ new carrier downflow system.The repairman just left again. He states ... A: Something wrong here. A counterflow system with the blower at the top, coil at the bottom would not ... | |
| Outside coils erroding | 8/13/2009 |
| Q: The coils on my outside unit Tempstar 2200 12 + Seer Heat Pump installed 12/12/02 have deteriorated ... A: I've seen these coils disapear but it was due to dog urine. Once they started using it it was their ... | |
| AIR RETURNS | 8/11/2009 |
| Q: My house is 1752 sq. ft 1 level. I am located Port St.Lucie Fl. My ac unit is a 4 ton. We had a leak ... A: How old is the system being replaced ? 12 to 15 years ? Time to replace. Be sure & replace with ... | |
| A/C won't turn off and I have ice build up | 8/11/2009 |
| Q: After experiencing a brown out power reduction in my area recently, my air conditioner now won't ... A: You have a stuck contactor in the outside unit. Probably from burned points. If you pull on the ... | |
| power failure oil furnace | 8/10/2009 |
| Q: while pulling staples i shorted the wire that feeds the round red outlet ( box ) @ furnace . the ... A: I'mnot acquainted with the round red outlet box. Usually just a spark won't do any more than trip a ... | |
| 24v at contactor | 8/10/2009 |
| Q: Have a rental unit that was giving intermittent starting problems but by the time my HVAC guy would ... A: Gotcha. You have a dog in the backyard ?? They love to chew on the wires to the outside unit. Not ... | |
| Trane XE80 | 8/9/2009 |
| Q: I have a Trane XE80. In the cooling mode, the condensing unit outside does not turn on. The ... A: The thermostat closes a switch to send a 24v signal to the condensing unit. Also, in auto fan turns ... | |
| 24v at contactor | 8/9/2009 |
| Q: Have a rental unit that was giving intermittent starting problems but by the time my HVAC guy would ... A: The first question is was the fan switch turned to ON ?? If the blower was still running & ... | |
| Reset wont stay | 8/7/2009 |
| Q: Heil 5000 Model CA5024 VKB1 air conditioning fan and compressor inop. (fan inside the house unit ok) ... A: A transformer in the outside unit ??? That's unusual. Isn't there a transformer in the furnace ... | |
| Reset wont stay | 8/7/2009 |
| Q: Heil 5000 Model CA5024 VKB1 air conditioning fan and compressor inop. (fan inside the house unit ok) ... A: That reset button generally a high pressure reset. Several things can cause a trip. Fan motor ... | |
| Rheem A/C Problem | 8/6/2009 |
| Q: my husband and I bought a Rheem A/C unit with heat pump, allegedly high-efficiency, 16 seer 4-ton, ... A: hate to hear problems like you are having. That 4 to should be doing a good job cooling your size ... | |
| Air Conditioner | 8/6/2009 |
| Q: My air conditioner is clicking like crazy. The air is not really cool, but that's not as bad the ... A: A difficult question Joy. Have you tried to locate the sound. Got to be associated with the blower. ... | |
| Home HVAC | 8/5/2009 |
| Q: What is the difference between pleated and fiberglass (usually blue with aluminun-looking frame with ... A: I have never seen any figures concerning pressure drop across a pleated filter. There would be more ... | |
| Flipping Inside unit upside down | 8/4/2009 |
| Q: I am replacing AC & gas furnace into all electric AC/heat. I found a used 2.5 ton Goodman complete ... A: The main problem is the evaopator coil drain. The fan will also blow hot air directly onto the ... | |
| Condensing Unit/// Lennox 10ACC | 8/4/2009 |
| Q: Fan in the garage works fine, blows air,. My outside unit does not come on. You can hear the power ... A: Look for burned wires in the electriv\cal box in the unit. Need to test the compressor run capacitor ... | |
| how to install thermostst | 8/2/2009 |
| Q: i just bought a new mobile home had to install the a-coil and condencer the home had a thermostat ... A: No, you use the transformer in the furnace. Now the problem, you will need 4 wire control wire from ... | |
| Mini Splits | 8/2/2009 |
| Q: We are ready to choose HVAC for a total rehab of brick home, converted to 3 family units (on 3 ... A: Carol. Yes I am suggesting the sleeve units for all 3 levels. Add to the benefits is no thermostats ... | |
| water in air conditioning ducts in mobile home | 8/2/2009 |
| Q: We just found water in the ducts on the back side of our double wide (same side as the unit is ... A: If you have a package unit outside(includes both cool & heat) remove the whole top. That should ... | |
| HVAC tonnage | 8/1/2009 |
| Q: I installed a new air handler and outdoor unit on my home a couple of years ago. My home is about ... A: Bet your neighbor has a correct sized duct system. These things are no better than the air ... | |
| Mini Splits | 8/1/2009 |
| Q: We are ready to choose HVAC for a total rehab of brick home, converted to 3 family units (on 3 ... A: I was aboutfinished with my answer & was interrupted & lost it ! My answer was to use sleeve ... | |
| residential hvac systems | 7/31/2009 |
| Q: What are the best rated 4 ton HVAC units? How does Amana rate ANSWER: I'm not really acquainted ... A: If Amana is owned by Goodman its a NO. Goodman puts a compressor in their units that is 6000 btu ... | |
| residential hvac systems | 7/31/2009 |
| Q: What are the best rated 4 ton HVAC units? How does Amana rate A: I'm not really acquainted with Amana. There are a few differnent compressors made today so need to ... | |
| tampering | 7/31/2009 |
| Q: Can someone tamper with your central air unit A: If you wouldn't pay me I'll puncture a hole in your condensing unit. Or open the service valve ... | |
| hvac | 7/30/2009 |
| Q: I have been having air problems for a while now & was told it probably due to air flow. I only have ... A: Well, no nee to just do patch work for a duct system. Best to go for the right SIZED ducts with a 5 ... | |
| Isolation relay. | 7/29/2009 |
| Q: .. ...hope you can shed some light on my problem. I installed a whole-house dehumdifier. ... A: Its only Thursday but hees the answer. Get a "contactor" type relay with a 24 v coil. Hook the 24v ... | |
| AC stops working after power blackout | 7/29/2009 |
| Q: Today we had a brief power blackout period. The power off lasted 2 minutes then on again. However, ... A: Lennox has a switch inside the outside unit near the compressor. its red. Push on it & if you feel a ... | |
| Isolation relay. | 7/28/2009 |
| Q: .. ...hope you can shed some light on my problem. I installed a whole-house dehumdifier. ... A: let's see now, when you call for cool, the thermostat circuit turns on the blower, but also turns on ... | |
| why my 5 year old air conditioner needs so much freon yearly! | 7/27/2009 |
| Q: In 2004, I put a 4 ton trane in my 'cottage-like", 1600 square foot office. In September and ... A: Got rain today. Shoot, your problem is simple: YOU HAVE A LEAK ! Never saw so much over a leak. Just ... | |
| copperlines from compressor to condensor | 7/26/2009 |
| Q: I have an Arcoaire AC (3.5 ton for 11oo sq ft, yeah too big I know) 12 seers system that was ... A: The liquid line size is the most important. A 3.5 will run OK with a 3/4 & 3/8 lines. Usually the ... | |
| Brands of air conditioners | 7/26/2009 |
| Q: Is there any major differences in brands of air conditioners when the specs are the same? The ... A: Very little difference.The major difference is in add on features. Like high & low pressure ... | |
| Musty smell from ceiling vents | 7/25/2009 |
| Q: I have dual zone goodman unit. The up stair unit has has the coil inside the attic which has easy ... A: Condensate water standing in the drain pan can cause the smells. Need to access the opening to the ... | |
| moving warm air | 7/24/2009 |
| Q: we have a wood burning insert in the bottom level of our tri level home.that room gets very warm, ... A: A duct booster fan doesn't blow much air. About like a bathroom fan. You have a Grainger Supply ... | |
| Furnace / AC size? | 7/23/2009 |
| Q: We have a 14 yo unit in our home in Indiana. Currently heated with a Goodman furnace, I seriously ... A: A 5 ton, Andrew. You need lots of oir moving with vaulted ceilings. But for good distribution the ... | |
| LG Deluxe Dual-zone airconditioner | 7/22/2009 |
| Q: I live on the third floor of a house and had the above installed two years ago and two months ago. ... A: Don't know what tonnage your cooling is but if its a 3 ton or bigger, $600 is a fair price. ... | |
| AC unit w/ Heat pump option, AC not running | 7/22/2009 |
| Q: I switched on my ac option on my unit last night. Everything inside the house ran. I noticed I didnt ... A: No, the fan runs the same for both modes. Only difference is the reversing valve. It is reversed on ... | |
| Central Air Conditioner not cooling | 7/20/2009 |
| Q: I tried to run my a/c today for the first time this year. After 3.5 hours of running the unit I ... A: Hate those meters John since you can't tell why the cooling stopped. The ambient air test was for ... | |
| Central Air Conditioner not cooling | 7/20/2009 |
| Q: I tried to run my a/c today for the first time this year. After 3.5 hours of running the unit I ... A: Usual problem John is it needs freon. But check to see if the outside unit is running at all. \ Is ... | |
| Custom Air Filter Size for Carrier 58GP100-3 Series 311 | 7/19/2009 |
| Q: I live in a house built in Dallas FOrt Worth in 1968. It's a two-story house with a simple return ... A: Carrier is famous for requiring special size filter ! Any a/c supply house can order a specila ... | |
| rooftop ac | 7/18/2009 |
| Q: this deli was having problems with rooftop 5 to 10 ton unit (not sure of size) it was going off and ... A: Sounds familiar for commercial rooftop stuff. Is the nameplate still visible ?? That ought to give ... | |
| hermetic compressor amperage | 7/17/2009 |
| Q: Howard, I've got a three ton residential condensing unit that I am having problems with wires ... A: Burned wires are caused by bad or rusty connections. Every compressor is different & there are ... | |
| Lux programmable thermostat | 7/15/2009 |
| Q: I am a little experienced in HVAC/electrical but I need some help with this one. I bought a Lux ... A: Best one is don't buy any more Lux stuff !! I'm sure not acquainted with any of the programmables to ... | |
| a/c exterior fan not moving | 7/14/2009 |
| Q: I noticed recently one of the two exterior fans is not moving and hums. I dont know what to call ... A: Sounds like the bearings are worn for what happened. I'd suggest getting some oil on the bearings ... | |
| a/c exterior fan not moving | 7/14/2009 |
| Q: I noticed recently one of the two exterior fans is not moving and hums. I dont know what to call ... A: both of the fans are needed for the cooling. The trouble may be just a capacitor for the dead motor. ... | |
| A/C Question - Goodman CK-42-1B | 7/12/2009 |
| Q: when that satisfying sound of the compressor springing to life stopped happening and just the fan ... A: Well hello again Don. I have been in this business since 1973 & it has always been fun(well most of ... | |
| AC fan stays on after AC is off | 7/12/2009 |
| Q: Replaced an old t-stat recently with a new programmable t-stat (ritetemp model 6025). Initially had ... A: The O is not to be connected to O. Is this a heat pump ? Doesn't seem to be. The white is for heat, ... | |
| A/C Question - Goodman CK-42-1B | 7/12/2009 |
| Q: when that satisfying sound of the compressor springing to life stopped happening and just the fan ... A: nice to have good info like yours. Need to test the run capacitor for the compressor first.May be a ... | |
| Raindown furnace flu | 7/11/2009 |
| Q: Howard. I'm having a problem with rain coming down the "inside" of my Gas furnace flu. I have tried ... A: wishyou would send the rain over here in TX. We are 106 every day, no rain, Only thing I can imagine ... | |
| air running (not continuous) - apt humid! | 7/9/2009 |
| Q: Livingston, Thank you so much for being there for all of us who are out here (literally)sweating ... A: Gladto "try" to help your not=to=good situation. Hope for your comfort & recovery. I have ... | |
| attic fan | 7/9/2009 |
| Q: I am planning installing an attic fan in my 2-story house. My attic size is approximately 1200 ... A: The soffits vents will work === but if you remove one you will probably see a much smaller hole has ... | |
| Air Conditioner kicks off breaker | 7/6/2009 |
| Q: As the weather warmed we noticed our AC was not working on the main floor (we have a separate unit ... A: Could be a bad capacitor on the outside unit fan. Have you watched the unit while it was running ?? ... | |
| No Cool Air After PG&E Smart AC Program | 7/5/2009 |
| Q: My question is... My central AC worked great until last Tues. afternoon when during the sweltering ... A: Oh Jennifer, never saw so much ineptitude in one place !! The guesswork on the 50 amp breaker shows ... | |
| carrier unit condensor valve cores | 7/5/2009 |
| Q: Do older Carrier units have a valve core on the suction side that cannot be removed if they are ... A: Been at it since 1973 & have never seen a unit without removeable schrader valve. What can happen is ... | |
| Roof top AC | 7/4/2009 |
| Q: I have a 1976 Coleman rooftop AC unit on my Motorhome, It runs OK, not the coldest, but after a ... A: sually there is not a service valve on those things. But you can buy a clamp made for the diameter ... | |
| Roof top AC | 7/4/2009 |
| Q: I have a 1976 Coleman rooftop AC unit on my Motorhome, It runs OK, not the coldest, but after a ... A: 33 years old !!!! They made good stuff then. Not anymore. Fan motors is the favorite thing to ... | |
| Goodman GMP07-3 | 7/3/2009 |
| Q: my Goodman unit's inside fan is running constantly. The outside unit will not turn at all, no fan, ... A: Manually press in the contactor in the outside unit & see if it runs. Test the freon to see if has ... | |
| tapping into air ducts | 7/1/2009 |
| Q: I finished our basement a few years ago and did not think we needed to tap into the ducts for air. ... A: you can do it. Whatever size duct you tap into you would need a Y fitting with a 45 deg side outlet ... | |
| Carrrier Furnace 58XTS070 placement | 7/1/2009 |
| Q: We got this Carrrier Furnace 58XTS070 last year when it was installed in downflow format. We are ... A: I presume the furnace is electric heat ?? The coil drain pan & drain lines is the problem. I don't ... | |
| New AC Unit tripping breaker | 6/30/2009 |
| Q: We have a 14 seer Goodman unit that is 13 months old. On Saturday we noticed there was no cold air ... A: I would start off replacing the circuit breaker. They can fail like everything else. Did the tech ... | |
| Iced Pipe on Trane Unit | 6/29/2009 |
| Q: We have a Trane XL19i Super High Efficiency heat pump that was installed in 2004 that doesn't seem ... A: Hate to say it but these evaporator coils they make nowdays can start leaking in a couple of ... | |
| SWAMPED PACKAGE UNIT | 6/29/2009 |
| Q: I probably have a wild question, but I'm looking at 2 International Comfort Package units: ... A: Look at the serial number for a year date in it. Like 184702432. See the 02 ?? I'd think if they are ... | |
| AC variations | 6/28/2009 |
| Q: My wife has a problem with the bedroom temperature in the summer. She is complaining that our AC ... A: I would suggest a new thermostat, like a Honeywell gold round one from Home Depot or elsewhere. They ... | |
| Central air | 6/26/2009 |
| Q: Help! On house is on the market and we just realized our central air isn't working. We want to fix ... A: Got my email ?? Its a control circuit problem. !!! So lets carry on with the diagnosis. It can be ... | |
| low voltage problem | 6/26/2009 |
| Q: okay let me start by saying i am a residential/commercial service tech. my question is one, more for ... A: Are you getting 24 v between Y & C on the board WITH THE RED & WHITE wires to the outside unit ... | |
| Evaporator Coil/Furnace | 6/25/2009 |
| Q: I had and two ton condenser installed last year. When I turned the air on this year, the thermostat ... A: 1. Only if enough oil has leaked out with the freon. Generally does. 2. Look below the burners for ... | |
| hvac | 6/25/2009 |
| Q: Our air handler is (Friedrich) over 22 years old and the compressor is dated 1991, very few problems ... A: Florida is the best place in the country for heat pumps. You hardly EVER use the electric heaat. Its ... | |
| Evaporator Coil/Furnace | 6/25/2009 |
| Q: I had and two ton condenser installed last year. When I turned the air on this year, the thermostat ... A: 1. Yes just find one that fits the case. 2. Not unless the heat exchanger is rusting out. 3. Usually ... | |
| Heating, Air Conditioning HVAC - Rheem Classic 10, fuse | 6/25/2009 |
| Q: Everything (heating or AC) was working before. I turn on AC this year, control board fuse always ... A: Now its getting wilder Steve. I would disconnect the 2 wires to the outside unit at BOTH ends. With ... | |
| hvac | 6/23/2009 |
| Q: We installed a new frigidaire hvac unit in 2004. We have had nothing but trouble w/ the temperature ... A: Reminds me of a problem with 2 heat pumps 2 friends had installed themselves. Both had compressors ... | |
| GMC Furnance | 6/22/2009 |
| Q: Last year the AC tubing(copper)had ice on it. Had it checked to see what was causing the freeze up. ... A: It's 103 down here in Texas now Ramona, cooling is valuable, right ? The place to start on the unit ... | |
| HVAC Dual Zone | 6/22/2009 |
| Q: My father-in-law has a dual zone system in his house. The house is about 1500-1600 square feet on ... A: Common problem with 2 story houses & an open stairwell. Difficult to fix since the cool air upstairs ... | |
| hacv | 6/19/2009 |
| Q: Had my system repaired,condensing coil,blower motor and fin,charged system. -This is a slit system ... A: New repair parts work as good as old parts. If you have an electric furnace the elements can ... | |
| HVAC | 6/17/2009 |
| Q: I have a model: E2EB-017HA 4ton unit. Ihave had the inside and outside coils cleaned, the technician ... A: Have you tested he run capacitor for the blower motor ?? How about the current draw when the motor ... | |
| A/C cooling but home is hot | 6/15/2009 |
| Q: ! We have a Coleman blend air system - 4 ton in a 1782 sq ft mobile home built in 1996. Over the ... A: This sorta IM, right ? I'm retired so check in often. Keeps my brain active. The return is onthe ... | |
| A/C cooling but home is hot | 6/15/2009 |
| Q: ! We have a Coleman blend air system - 4 ton in a 1782 sq ft mobile home built in 1996. Over the ... A: That phrase "it's doing all it can" is familiar. I've used it myself so I would accept that it is ... | |
| Condensation pan shut off | 6/14/2009 |
| Q: Our AC shut off because the condensation pan was full. I emptied the pan, found and (hopefully) ... A: You have an emergency float switch on the drain line ??? Either that or a condensate pump are the ... | |
| HVAC air distribution | 6/13/2009 |
| Q: I have a RUUD system in my house (Heat pump model # RPKA-031JAZ and air handler # RBHA-17J11NFDAI). ... A: You have an "extended plenum" duct system now. They work if, after each drop to a room the size ... | |
| Circuit Breakers | 6/12/2009 |
| Q: In general, can a "defective" circuit breaker fail to pass electricity while in the "on" position ... A: good question. These things can be deceiving.hey will not reset to the ON position. Maybe a little ... | |
| Split AC Not Cooling | 6/11/2009 |
| Q: I have a 1 ton videocon split air conditioner at my home. Most of the time it does not cool i.e. the ... A: You need to go see if the outside unit is running when the thermostat is calling for cool. Hold your ... | |
| P traps | 6/9/2009 |
| Q: We have an inspector that is telling us that we HAVE to install P traps on A coils on top of ... A: Well I'm not much on codes. They are different in different places. I agree with you after 30 yrs ... | |
| heat pump blower quits sometimes | 6/8/2009 |
| Q: I'm running my air conditioner, and I noticed that the blower is quiting at times and sometimes not ... A: The blower is triggered to run by the thermostat on a call for cooling. Check behind the tstat for a ... | |
| Hight pitch noise on the A/C furnace, only on summer | 6/6/2009 |
| Q: is my second summer in a row with a high pitch noise coming from the A/C furnace. It only happens ... A: Well, I was going to say air noise but not ! There has o be a restriction in the high side liquid ... | |
| Commercial AC Temp Control | 6/6/2009 |
| Q: I work in a 4 story building, 40,000 sq ft/floor. We are working hard to be green. We are in the ... A: Keep the fans running all the time & set the temps up to about 81 - 82. That is comfortable with air ... | |
| Corroded coils on furnace | 6/5/2009 |
| Q: An HVAC technician just left after inspecting my upstairs unit, Carrier 38YCC, which is a little ... A: I presume you are referring to the evaporator coils ?? They are normally made from aluminum fins & ... | |
| problem with control circuits | 6/5/2009 |
| Q: I have an HVAC degree and i am pretty decent with troubling shooting until it comes to double wides ... A: Electrical skills in this A/c business determines whether you are good or not. I worked with a guy ... | |
| American Standard Freedom 90 blower problem | 6/5/2009 |
| Q: I have an American Standard Freedom 90 furnace with a brand new (yesterday) American Standard ... A: When in cool mode the thermostat activates the inside fan when cooling is activated. If you have a ... | |
| Multivolt gas valve | 6/4/2009 |
| Q: My son has a gas pool heater that has a White Rodgers Multivolt gas valve with a 250 milivolt pilot ... A: The generator does hold the knob down on the gas valve. Its not producing the 750 millivolts to do ... | |
| Snyder General Fan Won't Stop Running | 6/2/2009 |
| Q: Howard, I have a Snyder General Comfortmaker model # GUF100A012AN. The AC and Heating systems seem ... A: all those folks are correct. Your problem is "most likely" a stuck fan relay. You have a circuit ... | |
| evaporator water problem | 6/1/2009 |
| Q: I have a trane vertical air handler with the coil at about a 60 degree angle. This system is about ... A: The fins are spaced to retain water. Your fins may look clean but have collected crud over the years ... | |
| AC Unit Float Switch question | 5/29/2009 |
| Q: I have a Goodman air conditioner that was installed brand new in my condo in May 2005, when it was ... A: I don't dig the 2 pipes coming from the evaporator coil ? Something different here. Anyway, the ... | |
| Frozen AC pipes and AC runs as heat pump | 5/28/2009 |
| Q: I got a new Goodman 5 ton heat pump system in Dec 2006. The system worked well until Jan 2009, at ... A: Looks like a stuck closed contactor in the outside unit. Running with out an inside blower causes ... | |
| AC Unit Float Switch question | 5/27/2009 |
| Q: I have a Goodman air conditioner that was installed brand new in my condo in May 2005, when it was ... A: Ah, those float switches are there as an emergency only. Don;'t need them if the drain line for the ... | |
| air conditioner output air temp | 5/27/2009 |
| Q: what should the temperature of the air coming out of the room register while the air conditioner is ... A: Good question, Jim but tricky. An eveporator coil operates at 70 deg. BUT, from there a bunch of ... | |
| rotten egg smell | 5/26/2009 |
| Q: HOWARD---THIS IS NOT A QUESTION BUT THIS SAME SMELL HAPPENED TO US WHEN WE GOT OUR NEW HEAT PUMP ... A: Are you the one that reported the smell a few days ago ??? I had another question about that & don't ... | |
| Luxaire a/c unit loses all freon 4 years in a row | 5/25/2009 |
| Q: The short of the story is this: I had 2 Luxaire Outdoor Split-System air conditioners installed in ... A: Freon leaks can occur ANYWHERE !! A 7 day leak should be able to be heard 100 ft away. But I have ... | |
| No Power | 5/25/2009 |
| Q: we have a Heil DC 90 Ultra High Efficiency with model # beginning with NTGM. We have not used our ... A: Wait to call a tech. This is for free. Look for a 3 amp fuse, automobile type, plugged in to the ... | |
| restart eletronic furance | 5/24/2009 |
| Q: windy weather,so the gas furance and water heater went out. started the water heater,no problem. ... A: How about 85 in Texas.Gas pilot lights are blown out by high winds bacck pressure down the flue ... | |
| Somewhat of a rotten egg smell emitted out of a brand new system | 5/24/2009 |
| Q: Howdy sir. I will try to use to use all the technical lingo I can, and what I have tried so far to ... A: Jon, I have the answer !!! Just got a reply from "Shirley" that solves the problem. The rotten egg ... | |
| Central Air Install/Quotes | 5/23/2009 |
| Q: I have been getting estimates for central air install w/duct for my old colonial home in northern ... A: The only advantage I've seen for variable speed blowers is quiet. If a return air grille faces a ... | |
| Janitrol compressor trips breaker | 5/21/2009 |
| Q: I have a Janitrol compressor that occasionally trips the breaker. If I reset the breaker (off and ... A: Good question, difficult to answer. Many things can be the fault. First try tightening all the ... | |
| A/C charge | 5/19/2009 |
| Q: should refrigerant be added until the sight glass shows no bubbles?Does this work on all systems?No ... A: It's better than nothing Gregg. But it can show bubbles & be over/under charged. The type of ... | |
| mold in air duct system | 5/19/2009 |
| Q: Cladosporiium and another non flower mold was identified to be in my flexible air duct system ... A: Duct cleaning in flexible ducts is no good. Probably will tear them up with that plastic tube. ... | |
| smell of natural gas | 5/18/2009 |
| Q: Mr. Livingston, I am hoping you can give me some direction concerning a problem with my Central A/C ... A: Glad its not CO are you'd be a goner. Couldn't smell it anyway. Is the furnace a gas unit ?? You ... | |
| noise from Lennox G40UH xseries | 5/17/2009 |
| Q: Howard, thought I might need to change a fan belt or oil a motor but now I see no belt...squealing ... A: Belt driven blower motors stopped many years ago. Sure had to keep many, many sizes on the truck. No ... | |
| Rheem heat pump indoor motor does not run | 5/17/2009 |
| Q: Howard, I have a 1991 Rheem 2.5 ton all electric heat pump system. In cool mode, the indoor motor ... A: If the furnace controls is a solid state circuit board the fan replay is a little black box on the ... | |
| Rheem heat pump indoor motor does not run | 5/16/2009 |
| Q: Howard, I have a 1991 Rheem 2.5 ton all electric heat pump system. In cool mode, the indoor motor ... A: In cool mode & fan in auto, the thermostat turns on the fan. If you have a digital tstat, have had ... | |
| CO Level | 5/16/2009 |
| Q: What level of CO is acceptable in the airstream heating the living area? A: Good question, difficult answer. That's because everybody has different tolerence to CO. Thats why a ... | |
| AC question | 5/15/2009 |
| Q: I own a condo with roughly 1500 sq ft of livign space (2 stories). The AC unit (which is a heating ... A: WOW !!!! 10 grand !! Must be awful hungry.Talk to your neighbors or friends for recommendations of ... | |
| temps | 5/15/2009 |
| Q: Is there a standard for temp differences from outside to inside to determine how well insulated a ... A: Good question. There is a rule of thumb that is surprising. Here it is. With a good accurate ... | |
| Cold Room Air Flow | 5/12/2009 |
| Q: Firstly thanks for any help in advance. I have a upstairs bedroom that is partially over a garage ... A: From the installations I have done a 6' line can only cool a small bathroom !! And a 4"ine to a ... | |
| Cold Room Air Flow | 5/11/2009 |
| Q: Firstly thanks for any help in advance. I have a upstairs bedroom that is partially over a garage ... A: Got a chance to respond today. 20 ft for a 6 " ?? Does the "extended supply air plenum" it's called ... | |
| Cold Room Air Flow | 5/10/2009 |
| Q: Firstly thanks for any help in advance. I have a upstairs bedroom that is partially over a garage ... A: A 6" duct will not supply very much air more than 10 feet length.Was that room added or is the 6" ... | |
| One room hotter than the rest | 5/8/2009 |
| Q: I’m sure you hear this one a lot. I bought my house last summer. It was built in 1995 and is about ... A: It's a shame the duct systems are installed so badly.Air distrubition is so important. It adds to ... | |
| Compressor terminal prong corroded | 5/7/2009 |
| Q: I have a Bryant split AC system installed in 1997 (Model # 561CJ030-C). It tripped the circuit ... A: Hope thats all it wasn the burned terminal. Is there ANY stub left on the compressor terminal?? If ... | |
| fan doesnt always come on | 5/6/2009 |
| Q: Big fan doesnt always come on when air condition is running on outside gas heat and air? Is this ... A: Whoa ! A different picture ! It's icing over the evaporator coil, blocking the air flow. Probable ... | |
| Carrier Infinity 96, 40000 BTU | 5/5/2009 |
| Q: We've just had this unit installed after our old oil furnace went kaput, using the same duct work ... A: Fans has speed adjustments but the increase from one to another is 50 rpm. Not much but can help. ... | |
| A/C Brands | 5/5/2009 |
| Q: I think we're going to replace our central air unit this summer. Do you have any preference on ... A: How much money you have ??? I'm a "conservative" ie tightwad. Make sure the new stuff uses R 410a ... | |
| Outside Unit - Fan & Compressor not turning on - electrical? | 5/4/2009 |
| Q: I'm hoping you can help me out with my Bryant Air Conditioner outside unit. The outside unit won't ... A: Start off testing for power supply to the outside unit by pressing in the start relay manually. If ... | |
| Coile and duct work needed | 5/3/2009 |
| Q: I have a 5 year old 4 ton system that continues to freeze up. I am constantly told the Freon is ... A: You need more bids. At least 2 more. Ask your neighbors for their recommendation or co workers. Your ... | |
| wiring for 24 volt transformer | 4/29/2009 |
| Q: I put a new control or mother board on a goodman heat/air unti, wiring a 110/230 24 volt transformer ... A: Well, the control circuit board controls the heating unit, so the transformer has to connect to ... | |
| Trane XT500C heat pump wiring | 4/29/2009 |
| Q: I have a trane heat pump xt500c thermo. and am trying to find out what each wire goes to so I can ... A: Heat pump tstats have changed lately. Have had trouble myself matching the combination terminals ... | |
| HVAC Duel System | 4/27/2009 |
| Q: I just bought a home with a Duel zone system, one for upstairs and one down. My question is: when I ... A: hat's a good one, Michael ! Maybe there is a diverter in the ducts somewhere is all I could imagine. ... | |
| Home A\C compressor | 4/26/2009 |
| Q: I have a Lennox outside unit and a Comfort air inside unit. The comfort air furnace and evaporator ... A: Sounds familiar. They were welding freon lines on the changeout & a weld is leaking all the freon - ... | |
| weather king AC unit | 4/26/2009 |
| Q: My puppy was chewing and yanking on the wires coming from our house to the AC unit. The thermostat ... A: Need to enclose those wires in fence wire. Once the dog chews on them it will not stop. Consequences ... | |
| outside fan want turn on but inside blower want stop running | 4/25/2009 |
| Q: when i turn t-stat to cool auto or on the outside fan want turn on you can hear a click in the ... A: Check the circuit breaker for he outside unit first.If OK, manually close the start relay with a ... | |
| Size and distance intake line from unit | 4/24/2009 |
| Q: Our exterior 3 1/2 ton heating/air condition unit is current located on the southern exposure, which ... A: Need some clarification. That 16" line is a round duct 16" in diameter ?? That is the return air ... | |
| Rheem RPKA-037JAZ | 4/22/2009 |
| Q: The heat pump will not turn on. On the outside of the unit is a reset button. The schematic calls it ... A: That's a high pressure switch. Main cause to trip it is a bad condenser fan motor. Does he fan run ... | |
| venting three dryers in line thru flat roof | 4/22/2009 |
| Q: Howard we are renovating a three family house with washers and dryers on each floor to vent the ... A: W hen the 3 vent lines merge, the diameter of the duct should increase to 3 times the area of one 3" ... | |
| air conditioning | 4/21/2009 |
| Q: What is the correct way to measure super heat in an a.c. system, wet bulb temp and dry bulb temp? A: The old fashioned way, like me. It is: measure the suction pressure & convert it to temperature. ... | |
| AC unit age and warranty | 4/19/2009 |
| Q: I have a Rheem CriterionII. The inside fan stopped working. Is there a way I can find out how old ... A: Nice to have a rough idea of its age to find the date. for 1990 it may read 1469047.hat motor is ... | |
| replace EVAP coil | 4/15/2009 |
| Q: Howard, I have a 5 yr old Goodman split heat pump. Two yrs ago i had to add refrigerant an now I am ... A: Where do you live, California ?? Run the guy off with a stick. Try this, there is a liquid you can ... | |
| Split System Central AC | 4/15/2009 |
| Q: I have a split system central AC in my condo. Compressor unit is on roof of three story building ... A: Upthere all you need is a block of ice & a fan for cooling ! No problem for the distance between the ... | |
| Split System Central AC | 4/14/2009 |
| Q: I have a split system central AC in my condo. Compressor unit is on roof of three story building ... A: Big expensive problem for a 3 story roof! Sometime a crane is necessary to access the roof. Could be ... | |
| a/c installation | 4/13/2009 |
| Q: I had a Trane split system installed last week.The outdoor unit is 1 1/4" out of level.The ... A: There is about a qt of oil in the compressor that is oiling the bearings. There is some tolerance on ... | |
| Leaking Evaporator Coil | 4/13/2009 |
| Q: I currently have a split Lenox Unit (11 years old) and the Evaporator Coil has a leak. The company ... A: That point of a matching SEER system, in & out can bring about a HUGE discussion! Some brands say ... | |
| seer versus tons | 4/9/2009 |
| Q: What is the difference between seer and ton? We are getting ready to get a new system for the house ... A: 1980 !!!! Cheez, that's great ! You can't ever tell how long these things will run. But one thing ... | |
| seer versus tons | 4/8/2009 |
| Q: What is the difference between seer and ton? We are getting ready to get a new system for the house ... A: Seasonal Energy efficiency rating = watts/ hours. one ton = 12,00btu.@95 deg. Bet you've heard a LOT ... | |
| bathroom exhausts:energy efficient? | 4/8/2009 |
| Q: do bathroom exhausts suck the heat/air out of your house. i always turn them on for white noise in ... A: Uh oh, a family discussion ?? A bathroom exhaust fan moves about 50 cfm.A 1500 sq. ft house has ... | |
| central heat unit | 4/7/2009 |
| Q: I have an American Standard central heat and air unit. I am unsure of the size. The air works great ... A: Those switches are around the burners & are small red switches. Sopme have a reset button that pops ... | |
| 24v control wiring to outdoor unit. | 4/6/2009 |
| Q: I am having a problem getting 24v to my outdoor unit. there was two transformers on the system one ... A: You have a dog in the backyard that has chewed on the wire ?? Common problem. Can be a mouse in ... | |
| Digital thermostat for Mobile Home | 4/1/2009 |
| Q: I live in a 1994 mobile home 16x80 & want to change to a digital thermostat (Honeywell RTH230B) my ... A: The red & white wire was for heat ONLY. Moving the red wire to Rc is OK but the white wire to Y is ... | |
| HEAT PUMPS | 3/31/2009 |
| Q: Sir, I would like to ask you if you think a heat pump is recommended for my area for a new AC and ... A: Florida is the best state for heat pumps. Go for it. Just check the run amps comparison between the ... | |
| Proper HVAC size for house | 3/30/2009 |
| Q: Howard: we bought a 750 sf, one level, circa 1935 cottage on Va's eastern shore. Crawl space newly ... A: Heat pumps are for Florida, NOT Virginia ! You would be running electric elements most of the Winter ... | |
| Air return sizing | 3/30/2009 |
| Q: I have discovered that whoever installed my HVAC system did it in a strange way. There are filters ... A: I have a 3 ton cooling system & have 400 sq. in. grille.But I could use any number of RA grilles as ... | |
| Proper HVAC size for house | 3/30/2009 |
| Q: Howard: we bought a 750 sf, one level, circa 1935 cottage on Va's eastern shore. Crawl space newly ... A: Ducts nowadays are flexible stuff but with good insulation(1.5")But would you have any space for a ... | |
| Air return sizing | 3/30/2009 |
| Q: I have discovered that whoever installed my HVAC system did it in a strange way. There are filters ... A: Are these returns near the floor in several places around the house ?? There should not be any ... | |
| Furnace problems | 3/28/2009 |
| Q: I'm currently having some trouble with my furnace. The Thermostat seems to be working fine. I can ... A: Those switches are pretty standard among most brands. First tho, detremine whether the switch is NO ... | |
| Gas Furnace/White powder buildup | 3/27/2009 |
| Q: Yesterday my carbon monoxide detector went off. I had someone from the gas company come out and ... A: Is this a standing pilot type furnace ? Some kind of powder is typical for this type, but not very ... | |
| Furnace problems | 3/27/2009 |
| Q: I'm currently having some trouble with my furnace. The Thermostat seems to be working fine. I can ... A: The key here is " it won't even light up".If the draft motro runs on a call for heat, the air ... | |
| Zone vs. Variable Speed Heat and AC | 3/26/2009 |
| Q: I have a 3-story house and installing central air. I have been told to get a 2-zone system in order ... A: A 2.5 cooling system will produce only 1000 cfm. Not very much air. Since cold air falls you need 2 ... | |
| Furnace problem with ignition | 3/26/2009 |
| Q: My daughter has a Rheem Criterion Gas furnace Model RGDJ 07EAUER Serial # EB50302F400001836. It ... A: Does the igniter glow ? If so, several events are OK. If it does, & there is 24v at the gas valve it ... | |
| HVAC | 3/26/2009 |
| Q: I am involved with a Temple, and I am not sure if we are getting the run-around. We replaced all the ... A: Wow, Rick, never heard of that kind of problem. An a/c unit will run in 20 deg weather.Can't think ... | |
| thermostat | 3/17/2009 |
| Q: Six month old digital Honeywell thermostat keeps going from "heat on" to "aux heat on" but heat ... A: So your aux heat is for the electrical heat elements.If the tstat is auto shifting to aux heat I ... | |
| Heat Pump | 3/17/2009 |
| Q: I have a trane xb10 heat pump, standard airhandler with 1/2 HP motor heat strip BAYHTR 1415 backup ... A: Heat pump in Maryland noi good. That system can only provide enough heat down to about 32 deg in ... | |
| Payne Furnace...no heat | 3/15/2009 |
| Q: We have a 14 yr old Payne downdraft furnace up in the attic. It was forking fine until this morning. ... A: Getting closer Albert. Some of those igniters are ceramic & they can develop a small crack from the ... | |
| rheem home central heating & cooling unit | 3/14/2009 |
| Q: gas burner on unit wont lite. put new gas valve on but stll no burnner. piolt does stay lit A: An old style furnace, I gather that has a standing pilot ?? Is there any high temperature switches ... | |
| heating | 3/13/2009 |
| Q: My emergency heat light will not go off when the heat is running. It worked fine earlier in the ... A: Your elecric bill is up since emergency heat is only electric elements are operating. Does every ... | |
| condensing unit lowside and high side fluctuate | 3/12/2009 |
| Q: Please! Help. Last summer I had four units the same problem. 1st Weather King, 2nd Ruud, 3rd ... A: You in the a/c business, nuoc ?? The description you give sounds typical for a dreaded disease ... | |
| thermostat replacment | 3/11/2009 |
| Q: i wanted to replace my central ac thermostat with a digital one when i did sparks flared up and it ... A: Something funny here since "normally" those 4 wires are from the same side of the transformer. So ... | |
| Payne Furnace...no heat | 3/11/2009 |
| Q: We have a 14 yr old Payne downdraft furnace up in the attic. It was forking fine until this morning. ... A: If the draft motor runs & no igniter glows, it the air pressure switch that's bad. Insure the hose ... | |
| Heating | 3/8/2009 |
| Q: I have a Carrier forced air unit for our heating and air conditioning. Everything works fine but ... A: You must have an older gas furnace. If so, the fan/limit switch needs adjusting to control the fan ... | |
| 3600 sq ft ranch in nh-size of furnace needed | 3/5/2009 |
| Q: We just put a 1600 sq ft addition on to our ranch to bring total sq ft to 3600 (existing on slab, ... A: Like blowing in a bottle, when the pressure is maxed, no more pressure is possible, So when the ... | |
| Question about HVAC (Gas heat) | 3/5/2009 |
| Q: Where can I find the fuse for a tempstar Dc90 ultra high efficiency gas heating system? The system ... A: If there is a fuse on the module it is a plug in auto type, 3 amp. That is only a protection for the ... | |
| 3600 sq ft ranch in nh-size of furnace needed | 3/4/2009 |
| Q: We just put a 1600 sq ft addition on to our ranch to bring total sq ft to 3600 (existing on slab, ... A: Easy question Bonnie, difficult to answer. The new way to run a heat load analysis is with a ... | |
| payne furnace | 3/4/2009 |
| Q: The furnace was working last nite now over nite it will not come on. Checked thermostat when it was ... A: Does the lighting sequence of: Draft motor runs, air pressure switch closes, igniter glows, burners ... | |
| AC forced air unit leaks freon | 3/3/2009 |
| Q: I had to have my outdoor AC unit completely charged w/ freon last spring. My HVAC guy told me that I ... A: 90% of freon leaks are in the evaporator coil.Sometimes a sealer can be added in the system that ... | |
| Furnace working (or not) intermittently | 3/3/2009 |
| Q: 3 year old American Standard Freedom 90 Single Stage locks out intermittently (usually at night). ... A: Been at it 30 yrs never heard of "backfeeding" !! Have you tried reversing the power supply to the ... | |
| Furnace | 3/2/2009 |
| Q: I have a Lennox G21 pulse furnace. Last night the furnace didn't fire up. There was a humming sound ... A: Sounds like a lemon to me ! I would call the local Lennox sales manager for your area & tell them ... | |
| A/C tonnage rating | 3/2/2009 |
| Q: As best as I can determine from the internet, all the manufacturers have a/c in half-ton increments ... A: I did throw you a curve. Yes, you are correct about the Goodman. That is; a 3 ton condensing ... | |
| Furnace | 3/1/2009 |
| Q: I have a Lennox G21 pulse furnace. Last night the furnace didn't fire up. There was a humming sound ... A: The last thing you want to do is replace the module. You are resetting the module with the off/on ... | |
| A/C tonnage rating | 3/1/2009 |
| Q: As best as I can determine from the internet, all the manufacturers have a/c in half-ton increments ... A: Sometimes the evaporator coils are the same, the expansion device(which is a hole)is just a bit ... | |
| Gaffer & Slatter furnace | 2/23/2009 |
| Q: My condo has a G & S furnace. I replaced the old dial style of thermostat with a Honeywell digital ... A: Again. One more clarification. Are the burners still fired up or is it just the blower still running ... | |
| Rudd Silhouhette II Gas Furnace 4 Blinks | 2/22/2009 |
| Q: My Rudd Silhouhette II Gas Furnace will not start and the Normal green light is flashing 4 Blinks ... A: Check the air hose from the draft motor to the switch, blowing thru it for blockage. Check the ... | |
| Options for oversized A/C | 2/21/2009 |
| Q: Howard, My family just moved into a 3200 sqft house in Houston, which was built in 1993. It has a ... A: Good thinking Bill. In Houston you will need everything you can afford to cut the big electric ... | |
| New construction HVAC | 2/19/2009 |
| Q: Is a gas heat/elec AC outside package system less costly than a split system? It seems like a ... A: A package unit is more costly.The unit is more costly & the ducting connecions is more difficult ... | |
| heater not working | 2/19/2009 |
| Q: When i turn the thermostat to heat/auto the furnace tries to kick in for a couple mintues then shuts ... A: You've got to do some diagnosing yourself before I can help you. Namely, open the furnace to watch ... | |
| Return size | 2/18/2009 |
| Q: I have a 5-ton York split system. My installer put in a 20" x 20" return with a 16" duct. I have ... A: The return air duct is sized to produce an air velocity of 400 cfm or less. I do not have the chart ... | |
| code requirement for supply air filter | 2/18/2009 |
| Q: What is the code requirement for installing filters on the return air ducts serving the heating and ... A: Every state probably has there own codes. But there is a Universal Mechanical Code that all states ... | |
| Heil DC90 Ultra High Efficiency Furnace | 2/16/2009 |
| Q: I have a Heil DC90 Ultra High Efficiency Furnace which stopped working over the weekend. My Direct ... A: CO can affect different people different ways. Some can die when others are barely affected. Also, a ... | |
| furnace air flow with bigger pulley | 2/15/2009 |
| Q: Last summer I had ac installed in my house that did not work properly. My furnace is a Lennox that ... A: Sure can't see the air volume increase will affect the furnace for heat. You may see more affect on ... | |
| furnace won't stop running and sometimes won't fire | 2/15/2009 |
| Q: I have a Goodman Gas Furnace. It is about 5 years old. The other day my husband and I noticed that ... A: Replaced in warranty only keeps the original warranty length in place. Some can be expensive, some ... | |
| AC Unit Hard Start Kit for Dimming Lights | 2/13/2009 |
| Q: This is the second home that I have had on this property. The first home I went through two ... A: Powersupply to the house is inadequate. Somewhere in the electrical power circuit the wire is too ... | |
| Location of Filter for RUUD AC Model UENB 1008 BDS | 2/12/2009 |
| Q: I am visiting my 96 year old mother in Florida and opened up her AC unit to replace the filter. I ... A: I presume the furnace is NOT in the attic ?? If it is an uplow in a closet the filter would be at ... | |
| Residential Gas Furnace | 2/11/2009 |
| Q: Is it ok to continuously run the fan on a residential gas furnace? We have a large expanse of ... A: Continuous fan is good for circulation for large homes. If you have a 2 story house the hot air ... | |
| obsolete circuit board replacement | 2/10/2009 |
| Q: Livingston, I am getting a bit of a run around from various HVAC guys and am looking for some ... A: Good for you, Elaine. You will have to rely on the schenatic posted somewqhere on the furnace.Use ... | |
| Furnace to coming on | 2/9/2009 |
| Q: I do home repairs for a living and have a little experience with heating and I'm pretty good with ... A: Sure don't have an idea what's going wrong.Those code flashes on the led's sre generally OK for ... | |
| Thermostat | 2/8/2009 |
| Q: I am changing from a Chronotherm III to an Emerson 1F95-1277 thermostat. Current wires on ... A: New kinds of thermostats for heat pumps can be difficult. Can only say what is "normal" for the ... | |
| Kenmore Heating and air unit | 2/8/2009 |
| Q: i have a Kenmore model NTC6100GFA1 system that was installed 9 years ago.I recently have lost heat ... A: Several problems at once. The fan circuit is on a timed cycle with the heat. Think the fan relay on ... | |
| ac air return | 2/7/2009 |
| Q: I live in the Northeast. My AC is in the attic, (heat is baseboard so no connection)Home is 5 years ... A: Air doesn't move withou a pressure differential. Most likely that is occuring between the return air ... | |
| Gaffer & Slatter furnace | 2/6/2009 |
| Q: My condo has a G & S furnace. I replaced the old dial style of thermostat with a Honeywell digital ... A: Steven. When the furnace is set to run on the thermostat, let it stabilize for a bit. Then urn the ... | |
| carrier gas furnace | 2/3/2009 |
| Q: I have a carrier gas furnace plus 90 that was installed in 1993. The furnace is a sealed system so ... A: Doesn't that furnace have an led trouble light that flashes codes that can tell you where the ... | |
| obsolete circuit board replacement | 2/3/2009 |
| Q: Livingston, I am getting a bit of a run around from various HVAC guys and am looking for some ... A: Don't know about D & L Supply, but I would relay on the local RUUD supply house to sell me the ... | |
| No Heat. | 1/16/2009 |
| Q: I came home tonight to find no electricity in my apartment. After I fixed that I noticed that my ... A: Turn on the fan to"on". Does the fan run ?? That's a test for power, low & high. Is there a pilot ... | |
| furnace exhaust blower condensation | 1/16/2009 |
| Q: This is about 18 years old Heil furnace.I've replaced noisy exhaust blower, cleaned all drain tubes. ... A: This condensate problem is a difficult issue.A hot exhaust moving thru a cold pipe is hard to stop ... | |
| heating and air | 1/14/2009 |
| Q: i got a loud noise from my ac unit outside, i have electric central heating and air, i went outside ... A: You must have a heat pump. The ice formation is natural & is thawed by a defrost cycle in the ... | |
| wiring | 1/12/2009 |
| Q: i have zone heating. 2 stats. need to know how to wire control board. red. white wire coming from ... A: the heat contro; wires are red & white. The rest are for cooling & a fan.If each stat uses a red & ... | |
| Air Handler Fan Will Not Run | 1/10/2009 |
| Q: I have a 1990 Amana Heat Pump. The inside unit blower fan stops running intermittently..... about ... A: I did not respond about the delay knnob since an ajustable knob would be a coil of wire with a ... | |
| no power to furnace | 1/6/2009 |
| Q: My reheem furnace (model rgdg07eauer)is all of a sudden powerless, I check the circuit breaker,no ... A: There is a fuse on the board, generally. Its like an auto fuse & just plugs in. Usually a 3 amp. If ... | |
| Central heat/ac unit that cools from a well? | 1/5/2009 |
| Q: I am looking at purchasing a house, that has a central heat/ac unit that cools from a well. I think ... A: The model number hides the tonnage, like ABC3602516. That 60 is 60k btu & a 5 ton.A 1600 sq ft may ... | |
| Payne Force Air System | 1/5/2009 |
| Q: Fan is set on auto but when the unit is set to HEAT, the blower does not turn on. Angela A: The circuit for the heat fan is different from cool fan.Now, if you have a circuit board controlled ... | |
| error code on armstrong furnace | 1/3/2009 |
| Q: My 8 year old furnace will not fire up by thermostat, unless i go to the side of the furnace turn ... A: Pull off the 2 wires at the pressure switch & ohm across the terminals to test.Thats a reset you're ... | |
| Resize central hvac system | 1/2/2009 |
| Q: been awhile since I've talked to you.I installed a 3ton.Goodman 13 seer straight cool matched system ... A: The reversing valve is the question. Since heat is more important than cooling for people, the ... | |
| Electric Baseboard/Thermostat | 12/31/2008 |
| Q: Howard: I just installed 220 volt hydronic baseboard units (TPI)in an atrium (the rest of the home ... A: Running late due to the holidays. The green ground wire goes to a bare ground wire, or to a water ... | |
| Loud "bang" from air handler on Heat pump | 12/30/2008 |
| Q: I have a 1 1/2 yr old 4 ton Rheem seer 13 classic heat pump coupled with a rheem prestige air ... A: Could it be the blower motor inside ??? Quick test, turn on fan to on only, when up to speed turn it ... | |
| Ignition Failure, Gas Forced Air Furnace | 12/29/2008 |
| Q: I have a Frigidaire FG6RA 072C-12A - Nordyne. There is a red light that blinks 4 times. The ... A: Ground wires screwed to a metal surface can corrode. Sand off the metal at contact. Just watch the ... | |
| refrigerated air conditioners | 12/28/2008 |
| Q: I want to start investigating refrigerated air conditioners. I have searched the Internet and can't ... A: Happy New Year Sharon!Hope your Christmas was great. A rule of thumb to size is 500 sq ft /ton ... | |
| Direct vent propane wall heater | 12/27/2008 |
| Q: I have a 1 yr old Cozy direct vent propane wall heater. It works well, but only stays on for about 3 ... A: There is a hidden overheat switch somewhere near the top of the heat exchanger that may be tripping. ... | |
| hi howard | 12/27/2008 |
| Q: i have a clare megasave furnace. the motor went on in las t night. go figure huh christmas and all. ... A: This furnace has spark ignition to a pilot light ?? If so, you may have a stopped up pilot orifice ... | |
| no heat jus air from roofmount fau | 12/26/2008 |
| Q: MERRY CHRISTMAS HOWARD. I have a roof mounted fau the fan comes on but no heat . I looked and ... A: Test the air pressure switch by jumping across the 2 terminals. The ignitor lights after the ... | |
| T-1250 pool heater | 12/25/2008 |
| Q: I bought this unit used and the person who had it never used it. I got the unit hooked up and the ... A: There is an axiom in the service business, Werner, "if you touch it you're married to it " That's ... | |
| Thermostat OFF, heat still ON | 12/25/2008 |
| Q: This senior citizen is ignorant when it comes to heating. Have 3-year-old Weil-McLain Series 3 ... A: Well, Santa Claus may be watching if you strip !! Turn off the power at the boiler to kill the heat. ... | |
| Propane furnace gas surge | 12/25/2008 |
| Q: I have a Conquest 90 furnace (installed 1995) that started surging the flow of gas tonight. The ... A: Yes, there is a filter at the inlet to the gas valve. You know that condensate is possible in the ... | |
| Heat Pumps | 12/24/2008 |
| Q: How can I tell if I have a bad reversing valve or a compressor issue.or maybe check valves The head ... A: It could be an electric heat element on, leaking seals in the reversing valve. Does a test of the ... | |
| Furnace has to ignite several times to light | 12/24/2008 |
| Q: I have a Nordyne model#M3RL080ABW furnace that tries to ignite up to 4 times, which then shuts ... A: Is the ignitor glowing red ? And if the gas ignites on the main burner just a bit the flame sensor ... | |
| goodman air handler and heat pump | 12/22/2008 |
| Q: Howard, My wife and I recentley purchased a older farm house. It was built in 1942. It has the cape ... A: Hope you live in Florida, or the South considering a heat pump. The heat from the compressor(1st ... | |
| 13 Seers vs 14 Seers | 12/21/2008 |
| Q: Howard, First off thanks for your time and making yourself available. I've got what i hope is a ... A: WOW, $480 !! No way. Know the formula for SEER ?? Its btu's per season divided by watts per ... | |
| heatpump | 12/21/2008 |
| Q: I have a split heatpump when I turn the t'stat to heat and fan to auto only the indoor blower is ... A: Good info Phil. Has the freon been tested?? First thing to do on a heat pump. May be off from a low ... | |
| Rheem Gas Furnance - Blower won't start | 12/18/2008 |
| Q: My Rheem furnance goes thru the start cycle and ignites but the blower wont come on...20 seconds ... A: Test the motor run capaictor first. You know how with an ohm meter ?? Then if it's OK, test the ... | |
| Internal fan won't turn on unless U hard wire it/. | 12/18/2008 |
| Q: I have a Coleman downdraft furnace, the internal fan won't turn on, I tested the wires and there is ... A: Sorry, can't help you on those code signals. Are they not indicated on the manuals? Maybe on the ... | |
| limit switch | 12/16/2008 |
| Q: My furnace is 11 years old, and i had to replace my limit switch because the electric pilot light ... A: Guess you are talking about the high temperature limit switches ?? Are those manually resets ?? If ... | |
| Heat pump/electric furnace | 12/16/2008 |
| Q: Have older TempStar Heat pump w/electric furnace. Fan on heat pump working ok (but is running ... A: Generally. the output of the compressor heat(first stage) poops out around 32 deg. At that time the ... | |
| heating | 12/16/2008 |
| Q: We have a newer two story home, but half of the 'second story' is a vaulted ceiling from the first ... A: The best answer, Matt is to have had 2 units installed, 1 up,1 down. Your on track to have ceiling ... | |
| Furnace Operates Correctly in All Ways Except... | 12/15/2008 |
| Q: ... the heat output is low. [LIST] [*]Centurion Gas Furnace, 75,000 btu., with AC [*]Thermostat ... A: Wow, never got such detailed info in my 1860 questions I've answered !! Good for you.My big surprise ... | |
| Electric HVAC | 12/14/2008 |
| Q: i recently had service done on my Electric furnance. The tech said that i am using only half(5 KW) ... A: If there are wires running to the elements & is connected to 240 volts you are getting full power. ... | |
| gas furnace | 12/14/2008 |
| Q: have gas furnace with electric start-appears that it takes 5 or 6 times for furnace to light(Clicks ... A: Maybe needs a little cleaning around the spark ignition. Or can be a partially blocked pilot gas ... | |
| No heat when it gets below 30 outside | 12/13/2008 |
| Q: Let us begin with, we have an Amer. Standard heat pump and for the 10 years we have been here, we ... A: Wow, Stephanie, you ought to go into a/c service work after all that good info !! Now let's see if I ... | |
| Moving burners on York 4 burner unit | 12/13/2008 |
| Q: I have an York package unit, the heating component has four heat exchanger ports but only uses two ... A: So the top burners heat exchanger is good ?? Yes, move the burners & block off both top & bottorm ... | |
| Furnace | 12/12/2008 |
| Q: I have a York Furnace about ten years old,it blows out cool air when it first starts.Is there ... A: That fan needs a delay to stop that. You may have little switches on the circuit board that can be ... | |
| HVAC tandem units | 12/12/2008 |
| Q: A friend has a large open loft space in a seaside community. The building is brick and concrete. The ... A: Well, ya know the humidity is 100% all the time on the seashore. Every crack needs to be sealed. ... | |
| Auxiliary Heat | 12/10/2008 |
| Q: I have an electric heat pump. My auxiliary heat keeps kicking on. I have my temp set at 65 degrees ... A: Some heat pumps have a thermostat in the outside unit which turns on the aux heat. Some are ... | |
| heating | 12/9/2008 |
| Q: ..I have a furnace that is at least 20 years old. I had it checked out last winter and it checked ... A: Probably have a thermostat with a heat anticipator in it that needs adjusting to a "longer" cyle ... | |
| Rudd Forced Air Gas Furnace | 12/9/2008 |
| Q: Having a problem with my furnace turning on. The system seems to work properly when I flip the ... A: You are resetting the circuit board that is acting up killing the power. Do you get the LED trouble ... | |
| heating schematic | 12/9/2008 |
| Q: I have a very old package unit gas heat that the fan will not turn on inheat mode. There is no name ... A: You have a thermostat with a heat anticipator ?? Maybe it needs adjusting. It is a dial with an ... | |
| Guardian furnace Pressure Control Switch | 12/8/2008 |
| Q: My pressure control switch on my new 95.5 efficiency gas furnace keeps filling with ... A: Well well. found the problem! You need a "P" trap, (not "S") on that horizontil run to catch the ... | |
| trane induction fan | 12/7/2008 |
| Q: I have a trane 2.5 ton unit with gas pack that is about 12 years old not sure about the model ... A: Yes there is John.Locate the transformer & press on it & see if it changes sound. They develop a 60 ... | |
| Guardian furnace Pressure Control Switch | 12/7/2008 |
| Q: My pressure control switch on my new 95.5 efficiency gas furnace keeps filling with ... A: That moisture would only come through the induced draft motor. That water may come from the flue ... | |
| Rudd 5 ton heat | 12/6/2008 |
| Q: Howard: It's 4 years old. Have replaced compressor, 2-3 fans, it freezes up and quits, just recently ... A: Gather all you're service orders plus any other happenings. Call you're local Ruud supply house & ... | |
| Heater blowing cold air | 12/6/2008 |
| Q: I have an electric heater, I noticed today that the house seemed cooler then normal. I was in and ... A: Those elements can drop off one at a time & you won't notice it till it gets real cold. Each element ... | |
| Heater 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: It could be caused by a digital thermostat. Also the heat fan is a separate circuit & for an old ... | |
| A/C | 12/5/2008 |
| Q: I have a 28 year old Lenox central A/C system in a 1400 square foot Townhome. The outside condensing ... A: Let the buyer beware! Caveat Emptor. This equipment usually does not like to work in a different ... | |
| heat pump compressor noise | 12/5/2008 |
| Q: Our"Thermal Zone" heat pump works fine in the summer ,but as soon as it turns cold out 40 degrees or ... A: Wonder you're still alive !! Must be good neighbors.Main thing differemce between heat & cool for a ... | |
| Ducane | 12/4/2008 |
| Q: We have a Ducane heater. When it is super cold out side it completely turns off. The heater heats ... A: some of these heaters have several rollout switches.Some can be manually reset by resetting a button ... | |
| PGCJAA/MAA cycling on-off in heat mode | 12/4/2008 |
| Q: in the heat mode, the unit cycles on and off, will not stay on to reach the temp needed to shut off, ... A: I presume this is a gas furnace. Don't recognize those letters.If this is a pretty old furnace ... | |
| Furnace inducer problem | 12/3/2008 |
| Q: I have a 4 year old new construction house with an 80+ single furnance. The inducer had been making ... A: Naw, that's like stockpiling a compressor. You have one spotted so I'd keep oiling the shaft end ... | |
| Furnace inducer problem | 12/2/2008 |
| Q: I have a 4 year old new construction house with an 80+ single furnance. The inducer had been making ... A: the bearings in those motors are just sleeve bearings. Was there oil ports on the motor?? Both ends ... | |
| heating unit | 12/2/2008 |
| Q: My heat unit outside doesnt always run with the fan going, is this normal? But the thermostat, it ... A: Sounds like this is an electric furnace ?? If so the hea fan is run on a time delay relay & that ... | |
| Comfortmaker gas pack issue | 12/1/2008 |
| Q: I have a 9 year old Comfortmaker gas pack model PGAD30D1K5 that I am almost positive has a bad heat ... A: We did have a good Thanksgiving with the family at a lake house owned by my daughter & husband. ... | |
| AC blower cycling on and off | 11/30/2008 |
| Q: Ruud model UCBA100C, Propane furnace, Age not sure but if it is original it's pushing 30 years. ... A: A 10% allowance for a capacitor is the limit. So replace it with a 10 mfd size. Sounds like the ... | |
| Booster Fan | 11/30/2008 |
| Q: I have a Carrier furnace with a Tjernlund duct booster fan on one of the branches. Previously, ... A: The booster fan ought to be 120v. Follow the 2 wires from the fan & see if they are not connected t ... | |
| fan blowing, but no gas or ignition | 11/28/2008 |
| Q: I have a 10-15 year old Amana furnace. About a year ago, it started blowing cold air. The heating ... A: Could be the flame sensor, Roger. Needs cleaning. Remove it & clean with a rag. Could be the air ... | |
| Gas Valve question | 11/28/2008 |
| Q: My Gas valve went bad on my Payne central unit. PY1PNBO30060AAAA series B LP converted Unit! I ... A: Does the flames look all blue, Jeff?? That's the sign of complete combustion on LP. And as you know ... | |
| Comfortmaker gas pack issue | 11/28/2008 |
| Q: I have a 9 year old Comfortmaker gas pack model PGAD30D1K5 that I am almost positive has a bad heat ... A: That would be OK to plug the 2 bad bays in the heat exchanger. Gas pressure not affected.I would ... | |
| Comfortmaker gas pack issue | 11/27/2008 |
| Q: I have a 9 year old Comfortmaker gas pack model PGAD30D1K5 that I am almost positive has a bad heat ... A: I'm not sure which model that is. You have 4 burners on that model? Does sound like a hole in the ... | |
| Payne gas hot air heater | 11/26/2008 |
| Q: I have a Payne gas hot air heater. When heat is called for the exhaust blower starts for 15 seconds ... A: Gosh, Fran that's a crud problem, maybe. ! Let's see,you could have dirt or something clogging the ... | |
| wiring for new thermostats | 11/26/2008 |
| Q: I bought the Honeywell rth6300b thermostat to replace the old mercury thermo that I'm sure came with ... A: Well, Don this proves that the heat pump thermostats will not work with an older model heat pump. As ... | |
| Goodman Heat Pump | 11/25/2008 |
| Q: Howard, I have a 7 year old Goodman PHK024-1 heat pump. Last night the heat stopped running. The ... A: Yes, the compressor is supposed to run for first stage heat, as is the outside fan. Sounds like that ... | |
| Condensation on Ceiling | 11/25/2008 |
| Q: I bought a house in April and it is on a concrete slab. At closing the seller told me he gets ... A: You're plumbing is under the slab & can leak anywhere. They find it by listening with headphones on ... | |
| elctronic fan timer control board replacement | 11/25/2008 |
| Q: My System is keeping the fan on constantly. Both the heater and the AC will not engage....I suspect ... A: Sounds familiar. Try tapping on the little black boxes on the circuit board to see if you can ... | |
| Carrier Gas Furnace short cycle | 11/24/2008 |
| Q: I am a novice and will try to explain what is going on and see if you can help me out. I just bought ... A: los of good info. I'll take it on one at a time. Don't understand what's the connection between the ... | |
| wiring for new thermostats | 11/24/2008 |
| Q: I bought the Honeywell rth6300b thermostat to replace the old mercury thermo that I'm sure came with ... A: The wires used on the old tstat do not indicate a heat pump.W2 was used for heat.Don't lnow why C ... | |
| Condensation on Ceiling | 11/23/2008 |
| Q: I bought a house in April and it is on a concrete slab. At closing the seller told me he gets ... A: Wow, Denise something funny here ! The condensation pump is to drain the condensate water generated ... | |
| how to wire a honeywell fan and limit switch | 11/22/2008 |
| Q: i need to know how to wire a fan and limit switch to the blower A: A limit switch is usually a high temperature device & it is connected to the gas valve, in series. ... | |
| heil model nuge080kg01 | 11/21/2008 |
| Q: if I start the unit up the pilot lights and the unit will run till it reaches the set temp then when ... A: Not a place to have furnace problems ! Check the voltage across the gasvalve 24v terminals & see if ... | |
| caloric LP range | 11/19/2008 |
| Q: we bought it used, converted to LP. The burners work fine, however the oven and broiler do not. ... A: Usually not involved with stoves but I think you're problem may be is the pilot orifice is stopped ... | |
| pulse 21 furnace 6 years old horizontal unit with moisture in blower compartment | 11/18/2008 |
| Q: pulse 21 furnace 6 years old horizontal unit with moisture in blower compartment. The furnace runs ... A: Sounds like condensate problems.Was the filter pretty dirty when you changed it ?? I would check the ... | |
| furnace | 11/18/2008 |
| Q: I have a 3yr old Tempstar upright furnace.The 5amps fuse on the circuit board keeps on blowing. Any ... A: You have a dead short in the low voltage control circuit. Got to find it. Sometimes can be in the ... | |
| Heating Airflow problem | 11/16/2008 |
| Q: My parents live in a townhouse that was constructed poorly because when they turn on the central ... A: Town houses are notoriously bad for a/c installations. Most likely there are too many jigs & jogs in ... | |
| Electric Furnace Sequencer/fan control problem | 11/15/2008 |
| Q: I'd like to start with thanking you for your time in advance. Now, help me impress my new wife with ... A: I better move fast Mark to keep you out of trouble with all those kids, wife too. You really have ... | |
| Transformer got burned | 11/15/2008 |
| Q: I cleaned the blower, burners and heat exchanger for my furnace and in order to do so I took out ... A: That was caused by a dead short in the 24v control circuit.You need a 40 VA with 120/24 ... | |
| lennox g40uh(x) series furnace gas | 11/13/2008 |
| Q: both led lights on furnace blink slow together when furnace is turned on the led lights blingk fast ... A: You should have in you're instruction a list of codes that tells what the problem is. If you don't, ... | |
| My Ruud heater | 11/13/2008 |
| Q: I have a Ruud Heater/ac unit in my house I just bought. It runs fine in the summer and the ac unit ... A: Now,you need to check & see if the outside unit is turning off when the cold air starts.Or is the ... | |
| lennox gas heat and air unit | 11/13/2008 |
| Q: I have a lennox gas heat and air furnace model gsc16. its a 93 model. Anyway when it started cooling ... A: That blower motor only draws about 3 amps, or it should. You have a clamp on amp meter ?? With the ... | |
| Ignitor fires early or gas valve turns on too late... | 11/12/2008 |
| Q: Here is the sequence I see. I ask for heat. The combustion exhaust fan comes on. The ignighter ... A: I think the problem is low propane pressure. The gas valve ought to open pretty fast after the ... | |
| heating and cooling workshop | 11/10/2008 |
| Q: I am converting a 14 x 20 freestanding potting shed into a craft studio. I'm adding insulation and ... A: Been on vacation so running late on my answers. I suggest a window unit with heat. I could be a heat ... | |
| question on furnace | 10/30/2008 |
| Q: I went to a friends house and the furnace was in a flood. No LED lights came on whe I turn on the ... A: The blower motor is on a timed circuit & will delay AFTER the burners are on. Try jumping across the ... | |
| Carrier Robertshaw Unitrol Valve | 10/29/2008 |
| Q: I have an older furnace, I'd say approx. 20 yrs old. It say 1985 as the year on it, but I'm not sure ... A: You have a 60 cycle hum from a 24v coil. I'm not sure what the part is as a "regulator valve" or " ... | |
| Thermostat Replacement | 10/29/2008 |
| Q: Have a Trane electric forced air heat pump and air conditioning system with a Trane Baystat 239 ... A: Head for Home Depot & look at the round Honeywell tstats with a lcd screen on it. I think those are ... | |
| gas furnace | 10/27/2008 |
| Q: My gas furnace is not lighting. In checking the electronic gas valve I see that the solinoids are ... A: A sensor needs to detect the igniter before the gas valve will open. So it seems the circuit board ... | |
| Furnace won't ignite | 10/27/2008 |
| Q: I have a residential gas furnace g6rl 90+ downflow, it tries but won't ignite. This is my first yr ... A: Follow this cycle to check what is NOT happening. On a call for heat with the gas valve turned to ... | |
| Heating | 10/26/2008 |
| Q: I have a Rheem RGRA series heater. The gas valve is not opening, when the furnace should be calling ... A: I'm not sure what all those acronyms mean. I don't know what the LED flashes mean, not having any ... | |
| gas pipe | 10/25/2008 |
| Q: we have a huge vibration in our gas pipes in our home specially in one room where the pipes go on ... A: Gas pressure in the line is so low you may have a problem in the regulator at the gas meter to cause ... | |
| heating unit filters | 10/24/2008 |
| Q: I have a Carrier 2800 gas heating furnace. It heats very well, but there are no air filter on any of ... A: Look at the return end of the furnace case.If there is a small door there that is the place for the ... | |
| American Standard Freedom 90 - 4 Flash Code | 10/24/2008 |
| Q: It looks like I need to press the reset burner box temperature limit switch which is located at the ... A: That is a strange name for a heat exchanger. I think that is what that term means. There usually are ... | |
| no power to furnace | 10/24/2008 |
| Q: I recently moved my thermostat from one side of the room to the other side,but I did,not turn off ... A: Wow, no wonder no power ! That 3 amp protects the 24v control circuit. The 20 amp should not have ... | |
| heil model nuge080kg01 | 10/23/2008 |
| Q: if I start the unit up the pilot lights and the unit will run till it reaches the set temp then when ... A: Since you have replaced the pilot sensor it indicates the module is not responding to open the gas ... | |
| Carrier PAV 58 - Fan won't turn off | 10/22/2008 |
| Q: The furnace heats and everything else works..no failure codes, however the fan stays on. It turns ... A: Are there any small switches on the circuit board that sets the fan on time ?? They are called dip ... | |
| furnace repair | 10/22/2008 |
| Q: I have an Empire direct vent wall furnace, propane, no fan 5 years old. The pilot went out, but now ... A: Is this a millivolt unit ? Sounds like it is. If so, need to test the voltage output with a strong ... | |
| the basement | 10/14/2008 |
| Q: Sir, I am renting the pretty garden flat in the most prestigious location in London...but, alas, it ... A: I'm still here till Friday Jimmy. Fire away. | |
| burners won't ignite on older ruud furnace with a gas pilot | 10/14/2008 |
| Q: I lit the pilot,turn on the heat but the burners did not ignite OK so i installed a new pressure ... A: Is the draft motor air flow blocked ? The air pressure switch is activated by positive air pressure, ... | |
| HEATER NOT WORKING | 10/11/2008 |
| Q: I HAVE AN EVCON HEATER/AC THAT DOES NOT PUT OUT HEAT NOW. BLOWER WORKS, BUT NO HEAT. SOMETIMES IT ... A: Not enough info, Bill but I can make a guess. Main thing to know if this is a circuit board ... | |
| trane gaspack furnace | 10/11/2008 |
| Q: unit has been cleaned and inspected but yet in am when it is not too cold out the heat seems to fire ... A: Wonder if you have low gas pressure ?? The flame sensor may not be sensing flames that are too weak. ... | |
| Airflow into center of finished basement. | 10/11/2008 |
| Q: I don't think I have enough air getting into the room which houses 2 H/W/H, and a 100k btu furnace. ... A: A stopped up flue pipe can cause this, Nick. Don't run it with yellow flames. That creates soot, ... | |
| Air Conditioning | 10/10/2008 |
| Q: I had my coil replaced about a year ago. I did not replace my outside ac unit yet, but it is pretty ... A: You do it with a garden hose & an oil can using about 5 drops of oil at the start of every Summer. ... | |
| Tempstar DC90 - Thermal Limits switch trips | 10/10/2008 |
| Q: My thermal limit switch trips and the burner turns off. When I remove my filter the furnace runs ... A: If dirt or soot has accumulated to plug up the heat exchanger or the flue pipe, the flame, or too ... | |
| Tempstar DC90 - Thermal Limits switch trips | 10/9/2008 |
| Q: My thermal limit switch trips and the burner turns off. When I remove my filter the furnace runs ... A: Is there any flames rolling from the burners ?? Is this switch one of those little red manual reset ... | |
| HVAC / Evap Cooler Lockout Circuit | 10/9/2008 |
| Q: Does anyone make a "lock-out" circuit for an HVAC unit, such that it will not come on if an evap ... A: Boy, Don, that's a good one ! Swamp cooler & a/c going at the same time !! Don't know of anything on ... | |
| Furnace | 10/8/2008 |
| Q: I currently have a Thermopride 1995 oil furnace and am thinking of switching to natural gas. I have ... A: Variable speed motors are quiet, but blow the same amount of air as a common motor. They do ramp up ... | |
| Air Conditioning | 10/8/2008 |
| Q: I had my coil replaced about a year ago. I did not replace my outside ac unit yet, but it is pretty ... A: Not yet. R22 is phasing out in 2010, R410 replacing it. BUT, recycled R22 will be around awhile yet ... | |
| AC control | 10/7/2008 |
| Q: I have a control problem that I could solve with an embedded controller, a small Visual Basic ... A: Interesting point, John. Just think that startup load is about 175% of run load & I could imagine ... | |
| furnace wont light | 10/5/2008 |
| Q: The furnace will not ignite. It has electronic ignition and you can hear it click to try to ignite ... A: Most likely the pilot line is plugged. Can you try to light it with a match while clicking ?? ... | |
| Bypass Humidifier Installation | 10/3/2008 |
| Q: I am installing an Aprilaire 600A unit on my Lenox Furnace and am wondering if the bypass ducting ... A: Is this an electrical furnace ?? The heat from that is only about 90 deg & not hot enough to ... | |
| HARD START | 10/3/2008 |
| Q: You had asked me a couple of questions so as that you could better understand the problem. I ... A: FOURTEEN POUNDS !!! WOW !!! Do you have a 100 ft liquid line ?? The amount of the charge is based ... | |
| gaffers and sattler forced air furnace model # S80FEF | 9/30/2008 |
| Q: my forced air furnace is located on the second floor in the closet. when i had the gasman come to ... A: Presume you use natural gas. Typical problem. The gas man was wrong. Soot doesn't mean a cracked ... | |
| HVAC | 9/30/2008 |
| Q: we have a 4ton rooftop carrier unit, evaporator is clean condenser is clean condenser fan is running ... A: Sounds familiar.The compressor bearings are wearing causing a bit of heat. Then on a cold start the ... | |
| Lennox Furnace on a Generator ? | 9/26/2008 |
| Q: Can I run my newer (2004) NG Lennox Furnace on the Generator?? Sorry I don't have the model # but I ... A: Not acquainted what a "Manual Transfer Switch"does. I wouldnt use the generator with a solid state ... | |
| Heating | 9/25/2008 |
| Q: My furnace HEIL DC90, model NTGM 100 EHA2 runs a small fan continuously. The fan does not stop even ... A: Could be a short in the control circuit for heat.Remove the thermostat wires. Fan still run ?? Look ... | |
| Lennox Furnace on a Generator ? | 9/25/2008 |
| Q: Can I run my newer (2004) NG Lennox Furnace on the Generator?? Sorry I don't have the model # but I ... A: You didn't say cooling. Just the furnace ?? If it's electric, probably not. One element is too much ... | |
| gas furnace won't start | 9/25/2008 |
| Q: I have a gas furnace that has what my husband calls an electric start pilot light. The furnace was ... A: Aw, don't need model numbers, they are all alike. $180 !!!!! Wow. I'd ask the neighbors who they ... | |
| no return register, stale air | 9/24/2008 |
| Q: I have a 3 story house. on the third floor, there are four floor registers but no return register, ... A: Where is the nearest register ?? I would say the return air was expected to be thru the open ... | |
| match condensing unit w/ gas furnace | 9/23/2008 |
| Q: Right now I have a Lennox G26Q3/4-100-1 model gas furnace matched to a Lennox condensing unit ... A: Either inside or outside can be changed separately. Just has to match tons of cooling to provide the ... | |
| condenser fan | 9/23/2008 |
| Q: two bladed fan slaps air and makes to much noise..uaka036jaz ruud, tried a three bladed 27degree but ... A: You are correct, cheaper. A shop that sells blades will have cfm values for blades.But the amp draw ... | |
| No power to AC | 9/22/2008 |
| Q: The ac was running normally this morning when it stopped just as if it had reached the set point. I ... A: Go outside & remove the control area panel. With a screwdriver press in the contactor points.If it ... | |
| HARD START | 9/21/2008 |
| Q: I HAD JUST PURCHASED AND INSTALLED A 14 SEER GOODMAN ALONG WITH NEW GAS FURNACE. I SAVE CONSIDERABLY ... A: He ain't worth $75/hr.R22 Freon sells for $7/lb so go figger.Or was this R410? Wonder what the sound ... | |
| york furnace | 9/20/2008 |
| Q: ..I recently bought a house without central air/heat. Central air is going to be too pricey for us ... A: Sounds good way to go Justin, except for the York. Try a Comfortmaker, American Standard or similar ... | |
| air handler/heaters | 9/19/2008 |
| Q: do you have to match the seer ratings of the handlers to the compressors (ac) eg can i replace a ... A: Wow, that is a arguable subject Jack.I have polled a bunch of the experts on this site & the ... | |
| york ac unit | 9/17/2008 |
| Q: I recently bought a house with a York unit that was manufactured and installed in 1993. It ran fine ... A: First, install a good surge protector on the furnace power supply. Next, I think it may be the ... | |
| Air vent noise | 9/15/2008 |
| Q: recently, I have notices a dripping/clicking noise in our upstairs air vents. At first, I thought I ... A: Sounds like condensate on the humid days is backing up water in the drain pan & maybe the fan is ... | |
| thermostats | 9/15/2008 |
| Q: I have what is probally a dumb question. I was looking to buy a 7-day programable...it has 3 stage ... A: There are no dumb question, Nick. A heat pump has 2 stages for heat. 1st is the compressor heat,2nd ... | |
| compressor problems??????? | 9/14/2008 |
| Q: What could cause a compressor to operate under the conditions listed below? Liquid line pressure ... A: Is there a liquid line filter installed inside the outside unit ?? Or one outside the unit on the ... | |
| New Air Unit | 9/13/2008 |
| Q: i just bought a home that was made in 1982. The air conditioning unit has went out. I found a nice ... A: Yes, you can change either in or outside separately. There is a "situation" happening about SEER ... | |
| NEW HVAC SYSTEM | 9/12/2008 |
| Q: I have a home that was built in 1977 in southern California. There is a 5 ton Original Lennox ... A: Hey Ike, You remind me of a hurricane I knew! Sure is slamming Galveston right now. 22ft surge ... | |
| Carrier Furnace | 9/12/2008 |
| Q: my fan won't kick on (buzzing at me) on my Carrier furnace. The LED light kicks on and is one solid. ... A: Spin the blower wheel to test the motor bearings. Test the motor run capacitor. If both OK,tap on ... | |
| ticking noises coming from heating ducts | 9/11/2008 |
| Q: I have a 2 yr old trane system. In the last 2 months I have started to hear snapping noises coming ... A: I am really puzzled with this one based on the fact that it occurs even when the unit is not ... | |
| hvac | 9/11/2008 |
| Q: My son has a 13 seer a/c unit, a payne, that is 1.5 years old and is no longer working. He had ... A: Sounds like bull to me, Jim. Current is current. Small difference between the power needed between ... | |
| Central air frigidaire B4VM-X36K-B | 9/7/2008 |
| Q: I added a 6in duct booster and got a Packard PR293Q relay but I can't figure out how to wire it to ... A: Get a 24v coil, single pole, double throw relay.( NO)I assume the fan motor is 120v. Find a 120v ... | |
| HVAC | 9/6/2008 |
| Q: I REMOVED A LEAKING R-22 EVAPORATOR "A" COIL AND I WAS GIVEN A CARRIER "N" COIL FOR REPLACEMENT. I ... A: I would use the old ear trick to set the charge on the TXV. Place a screw driver end on the liquid ... | |
| a/c unit does not turn on | 9/6/2008 |
| Q: Goodman AH1826-1 Last week, the unit responded properly, but now the unit no longer functioned. ... A: OK, you've got a dead short in the 24v control circuit somewhere. Have a dog in the backyard ?? ... | |
| Central air unit impacted by rain. | 9/6/2008 |
| Q: Howard, We live in a 6 year old condominium building with separate central air/heating units. Each ... A: After 30 years I thought I had heard everything !!! Not so, that's the strangest thing I have EVER ... | |
| Yearly Cleaning on Regency Gas Fireplace | 9/4/2008 |
| Q: Wow... this is the first time I've been to this site! What a fabulous idea! People, such as ... A: Pat for the very kind words. I have semi retired after 35 yrs & this sure keeps my mind ... | |
| Condo Wiring Issue? | 9/4/2008 |
| Q: We appear to be having an electrical issue in our condo. Awhile back our AC was icing up, freon was ... A: When it rains it pours is true, right ?? Icing is caused by several things: dirty filter, stopped up ... | |
| variable speed furnace/motors | 9/3/2008 |
| Q: I am purchasing a new furnace and like the idea of a variable speed motor for comfort and savings. ... A: The variable speed motor ramps up from 50 rpm to about 1100 rpm for cooling, the common speed. So ... | |
| Tripping CB in afternoon on start | 9/1/2008 |
| Q: My AC has been tripping the CB only in the afternoons during start up. I can reset the CB and it ... A: Where do you live in Phoenix ?? Your problems can often occur when the circuit breaker box is on a ... | |
| Bryant 90 plus RED LIGHT and NO AC | 9/1/2008 |
| Q: My A/AC was working fine until today. The outside A/AC just stops running and upon opening the ... A: Insure there is power outside, check both breakers. Then check the contactor after calling for ... | |
| Blown 50 amp fuse | 8/30/2008 |
| Q: Came home from store found A/C not running first thing I did was check the A/C disconnect,but could ... A: When that happens, Eric, it's usually the compressor shorting to ground. Disconnect all 3 wires to ... | |
| A/C problem | 8/29/2008 |
| Q: Residential 3 ton R-22 A/C unit about 13 years old in Dallas. T'stat calls for cooling. 24V and ... A: Sounds like(my favorite term) the compressor has a locked rotor. Have you measured the locked rotor ... | |
| Air conditioning | 8/27/2008 |
| Q: I have a two story home in FL my kids have moved out to school and we do not use the 2nd floor. I ... A: If it's possible to shut down the upstairs I would. The heat load from upstairs moving down stairs ... | |
| noisy air conditioner inside | 8/22/2008 |
| Q: my ac makes a bit of a loud noise when it turns on - it blows loudly while it's on - it makes a loud ... A: Try this, with a pair of needle nose pliers, bend each fin on the return air grille open a bit ... | |
| Lemon A/C??? | 8/22/2008 |
| Q: I closed on my home 12/31/2003 (brand new, 2 story, 1600 sqft). Since then, at least twice per year ... A: Candice,Not a good deal at all. You need to push real hard on the manufacture of the equipment. Talk ... | |
| poor air flow with newer home | 8/20/2008 |
| Q: I just moved into a new home. It is about a year and a half old. The builder lived in it for about ... A: Just a bad installation, Tim. If those are flex ducts the air resistance is high so the ducts need ... | |
| 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: Wow, Mary Sue, that's mind boggling!Let's go back to the basics, then rebuild the thermostat. The ... | |
| AC issues | 8/16/2008 |
| Q: I noticed that my ac unit was blowing warm air so I looked downstairs and noticed that the fan was ... A: RIP OFF, RIP OFF! That's probably an $8 relay. Well, that thing being a heat pump I'm not sure how ... | |
| running fan on central air | 8/15/2008 |
| Q: I live in FL and use A/AC all year. I'd like to be as efficient as possible. I recently had to ... A: Only need to run the blower all the time if you live in a great big house with high ceilings. Better ... | |
| Carrier compressor noise | 8/15/2008 |
| Q: We recently purchased a home that is 2 years old that has 2 Carrier AC units. The model numbers ... A: Have the compressor mounting bolts been checked for tightness ?? The rubber mounting pads been ... | |
| AC not working with fan in auto | 8/14/2008 |
| Q: Central home AC does not start with fan on auto mode. When fan is set to on mode, blower starts but ... A: Insure that the wires to the thermostat are not shorted. Carefully separate them & retry.If this ... | |
| Air Handler Replacement | 8/14/2008 |
| Q: First, thanks for taking the time to answer the readers' questions. It is appreciated. Is it OK to ... A: Well thank you Al, I really enjoy helping you all with your questions. Keeps my brain active. Is it ... | |
| Ductless Air Conditioners | 8/13/2008 |
| Q: I have two 9,000 btu air conditioners connected to a compressor outside for which is for up to ... A: An air conditioning unit requires a blower fan to transfer heat to the evaporator coil.So I would ... | |
| trane compressor | 8/13/2008 |
| Q: When my a/c shuts down, it makes a loud, vibrating noise. Was told that compressor is shot. My unit ... A: Having a Trane unit changes the answer on a compressor. Trane's are about 3 times the cost over all ... | |
| HVAC Design-best control system? | 8/12/2008 |
| Q: I am planning to replace my Apollo furnace/AC system with a Goodman heat pump/gas furnace system. ... A: A Trane compressor is about 3 times as expensive as all others.The tubing in the coils is aluminum, ... | |
| duct size | 8/12/2008 |
| Q: I don't think my duct is sized right please help me. I recently added on to my house and up sized ... A: Duct sizing is based on Bernoullis Equation for airflow.This is converted to a circular sliderule. ... | |
| a/c not blowing very cold | 8/11/2008 |
| Q: i have a 4.5 ton a/c split system that is not blowing very cold. the unit runs all the time and has ... A: Looks like you have a restriction in the system. Too low, & too high. pressures. First thing, was ... | |
| freon vs puron system - effect of reusing lines? | 8/9/2008 |
| Q: I need a total Heat pump HVAC system. The compressor is in the back of my townhouse,which is on a ... A: R-22 will no longer be made after 2010. So now is the time for R-410 for you. There is a flushing ... | |
| Variable speed furnace operating with standard AC Unit? | 8/7/2008 |
| Q: I am in the process of doing a complete HVAC install on both my existing units that are 21 years ... A: First off, you ought to be installing systems using R-410a. Thats the new, high pressure stuff ... | |
| Garage door opener | 8/7/2008 |
| Q: Recently my wife plugged in my large air compressor to inflate a raft! Well she heard a loud pop at ... A: WOW, what a blast ! No telling what happened with the breakers being rearranged ! Going to have to ... | |
| Heat pump problem. | 8/7/2008 |
| Q: My home has three heat pump sytems which are about 15 years old - Seer 11. Recently, the MBR unit ... A: Sounds familiar for a compressor getting too hot over a period of time & shutting down, till it ... | |
| Payne PA10 central air conditioner | 8/6/2008 |
| Q: My Payne PA10 air conditioner has suddenly quit working. The problem seems to be at the outside ... A: On the capacitor the 3 terminal are marked C, HERM, FAN.Cut the power, pull the wires off. With an ... | |
| no a/c | 8/5/2008 |
| Q: the house is reading 85.no cold air.repairman was out 2 weeks ago.said i was low on freon.put some ... A: How much freon is "some" That sealer is best for a small leak. Say not more than 2# added to fill ... | |
| carrier condenser motor replacement | 8/5/2008 |
| Q: outside condenser unit 38CKC036-340 says 1/5 hp 1.4a what my a/c repair man put in is an Emerson ... A: 69 avg days above 100 !! Couldn't handle that. I live in arlington,tx & we are having a string of ... | |
| evaporator fan inop | 8/5/2008 |
| Q: This is trane airhandler a couple of years old with variable speed. If I turn on power to it, after ... A: Hey Paul, sounds just like a bad run capacitor on the evap motor. Test it with an ohm meter on the ... | |
| Thermostat problem or . . . | 8/4/2008 |
| Q: In North Texas we are experiencing a significant heat wave of over 100 degrees for several days now. ... A: Need a freon test for capacity check. Just feel the suction line outside or inside in the afternoon ... | |
| Circuit breaker keeps triping | 8/2/2008 |
| Q: I have a Central Lennox airconditioner installed in my home about eight years ago. I recently ... A: Running late on answering, sorry. It could be as simple as a loose terminal on the power circuit. Or ... | |
| Dual Zone - Electronic vs manaul | 8/1/2008 |
| Q: We currently have a Electronic Dual Zone system that seems to have went bad after 12 years the other ... A: Zone control is sure good for multiple level homes.Being able to set 2 thermometers different in ... | |
| White Rogers Thermostat | 7/30/2008 |
| Q: I recently purchased a property that I am renting out. There was an old white-rodgers thermostat ... A: An inexpensive thermostat can be a magnetic switch control.The White Rogers is good, mercury ... | |
| mold in air handler | 7/29/2008 |
| Q: About 4 years ago I had a new ac system put in my 13 year old home. The old system failed and mold ... A: I'd say if you have a family with breathing difficulties get a UV light. I wouldn't pay $1800 for ... | |
| HVAC Design-best control system? | 7/29/2008 |
| Q: I am planning to replace my Apollo furnace/AC system with a Goodman heat pump/gas furnace system. ... A: Hate to tell you but Goodman used to be Janitrol & we nicknamed it "Junkatrol" Used to be named GMC. ... | |
| Air conditioner | 7/29/2008 |
| Q: We just had a power outage of 1-2 seconds. Our thermostat is working as is the blower. The A/C unit ... A: That outage is hard on compressor's. Refrigerator compressors too. If it is running when that ... | |
| Time delay relay on outside Compressor | 7/28/2008 |
| Q: I have a Carrier 38CK036320 split unit hvac system. After having different issues with the air ... A: From adding freon last year, that's where I would start testing. That Carrier probably has a low ... | |
| Freon/Puron Conversion Kits | 7/27/2008 |
| Q: I have a 6 yr old freon-based heat pump that needs replacing. In the process of getting quotes, one ... A: Sounds like he's blowing smoke at you, Mike. Never heard of a "conversion kit" before.It may be wise ... | |
| AC not working | 7/27/2008 |
| Q: Mr. Livingston, I am hoping you can give me some guidance. Our home is only 2 years old, a modular ... A: 2 105 days ahead. That was very nicely worded question. Thank you. These things can break at any ... | |
| AC Mold/mildew smell from ductwork | 7/26/2008 |
| Q: We live in South Florida and have a moldy smell in our house, which is probably originating from the ... A: Vacuum out the dust & dirt all you can from the supply air plenum. Then vacuum around the evaporator ... | |
| AC Blower won't stop before & after New Blower Relay | 7/24/2008 |
| Q: 30+ y old Singer AC - The Blower motor turns on & after the compressor cycles off the Blower turns ... A: The cool fan circuit is different from the heat circuit, that you may know. Also, with the ... | |
| thermostat swing | 7/23/2008 |
| Q: I have a question about the frequency of cycling of a Lux TX500 programmable thermostat which I ... A: I can't imagine you can satisfy both settings of cycle time & temperature !! A well balanced cooling ... | |
| Goodman Heat Pump | 7/23/2008 |
| Q: I have a Goodman Heatpump and 2 days ago I started smelling a smell like the heat had kick on. I ... A: Don't know whether that Goodman has this but some heat pumps auto turn on heat elements on a defrost ... | |
| Broken compressor | 7/21/2008 |
| Q: I would like to ask you a question. We have lived in an apartment 9 months and have one cat. Our ... A: Usually don't answer questions about friidges, but yours is easy.When the coils are pretty clogged & ... | |
| ac not blowing but compressor runs | 7/20/2008 |
| Q: we have ac/heating unit lenox g-26 series.few days ago we noticed that the compressor runs outside ... A: Women are sure a target, Janet.I hate that.Fan control on "auto" comes from the thermostat. Do you ... | |
| Gas Heater | 7/20/2008 |
| Q: I have a problem with my upstairs HVAC system in my house. The house was built in 1994 and has the ... A: Tricky question, Mike.I know of nothing that would interrupt power to the thermostat. There ... | |
| crack combustion chamber | 7/19/2008 |
| Q: I just bought a house and had the oil furnace serviced for the winter and the person who conducted ... A: Cracked heat exchanger usually condemns it. But if he sees a crack so can you. That's an easy way to ... | |
| A/C Capacitor | 7/18/2008 |
| Q: We had a service call (on our 2.5 ton Trane) a month or so ago (because only warm air was blowing ... A: WOW, $139 for a service call !!! $75 would be better.There is a 10% allowance from the capacitance ... | |
| Central air units | 7/17/2008 |
| Q: Just returned from Iraq to find that the basin for one of two HVAC units in my house is full of ... A: The open one is a secondary drain line, needed when the primary drain plugs up. Someone was lazy.If ... | |
| Air conditioner and water heater | 7/16/2008 |
| Q: When my air conditioner is running and the hot water heater turns on the exhaust from the hot water ... A: OOnly other thing I can think of is the heat exchanger in the furnace has a big hole in it. When the ... | |
| a/c is blowing warm air. | 7/15/2008 |
| Q: I live in a mobile home. I have a "split system" ( a/c outside, electric furnace and blower ... A: Anything can happen anytime to this stuff, Anthony ! Warm air indicates the compressor is not ... | |
| Gibson Furnace | 7/15/2008 |
| Q: Howard, I am attempting to solve two minor problems on a heat only central system located in a ... A: Wayne, Metal ducts I presume ?? #1. A multiple speed motor can have 2 brown wires for a capacitor,2 ... | |
| Two Stage AC Wiring | 7/14/2008 |
| Q: I have a two stage 5-Ton Goodman condensing unit, single stage variable speed Goodman furnace/air ... A: the most complex circuitry I have ever seen is on a 2 stage compressor.Lennox has had those 2 stage ... | |
| Question about Purely-Radiant Cooling? | 7/13/2008 |
| Q: I thinking of a cooling mechanism for houses and buildings in which the cooling -- in the direct ... A: I like you're thinking, Green! My counter to that idea is one of the laws of physics, heat flows ... | |
| York heat pump not running | 7/13/2008 |
| Q: I have a york heat pump at home and it has stopped running. If I force the breaker in the unit ie. ... A: A control circuit problem.Can be a bunch of things to cause that. Low on freon,broken wire ,24v, to ... | |
| SEER | 7/12/2008 |
| Q: The condenser on my split system failed (fifteen years old - we bought the house eight months ago). ... A: You touched a raw nerve, Bob about a mismatched SEER equipment.There is a lot of disagreement about ... | |
| trane a/c compressor stops, will start backup | 7/12/2008 |
| Q: Our Trane is about 10 years old. It did this last year and stopped. The compressor will stop and ... A: Better test the compressor. After the unit stops, lay your hand on top of the compressor. Is is too ... | |
| Leaking AC needs freeon?? | 7/11/2008 |
| Q: About a year ago my AC was not getting cold. The company came and added freeon and it was fine. ... A: Lack of freon can cause lots of ice on the evaporator coil. As it melts you can have a flood. But if ... | |
| York Heat Pump Error code 4 | 7/11/2008 |
| Q: I have a York heat pump that is functioning properly for about an hour (starts to cool down the ... A: Sounds like a hot compressor. Need to let it run until it stops, then open the top & lay your hand ... | |
| pricing/labor | 7/9/2008 |
| Q: My AC was not working properly and water was leaking around the outside unit. I called a repair man ... A: DON'T EVER PAY UP FRONT SHELLY. I changed a 4 ton coil & it was $875 total. Tell the guy to give you ... | |
| fan problem | 7/9/2008 |
| Q: i have a ten yr old heat pump/ac it's a 3.5ton janitrol/goodman the problem is spuratic? maybe 2X's ... A: With the fan in the "auto" mode on the thermostat, the thermostat turns on the fan when cool is ... | |
| Janitrol compressor problems | 7/8/2008 |
| Q: I have a 13 year old goodman janitrol heat pump with a bad compressor. It shorts out inside and blow ... A: That's a problem nowdays. The a/c supply houses require a license to buy parts. You might call a ... | |
| pulled small wire from outside a/c unit | 7/6/2008 |
| Q: I accidentally pulled a small wire from my outside a/c unit while weedeating. It contains 2 smaller ... A: Oh, how much money have I made fixing those wires !! Best thing is to splice those wires back where ... | |
| Return Air Vents | 7/6/2008 |
| Q: I am considering purchasing a new home still under construction, but we have concerns over return ... A: Did your current house have only 1 unit ?? Bet it did with multiple RA grilles.Now, the new house is ... | |
| AC | 7/5/2008 |
| Q: We moved recently- Have a -Trane I believe- from an old bill- "Unit- ICPC- Model NFCX480062" , "ICPC ... A: Sorry about the delay, Fred. A busy weekend. Back to the contactor. Check the points to see if they ... | |
| Air Flow | 7/5/2008 |
| Q: I recently ran an 8" air duct from the main duct of our swamp cooler to the master bedroom. ... A: If there is a supply air plenum with other ducts of various sizes connected to it & you add a duct ... | |
| Mystery Duct | 7/3/2008 |
| Q: This is a receipt for a question you recently asked at allexperts.com of Craig HVAC Expert. You ... A: Did Craig answer your question ? Your link to the drawings is invalid.I will just make a guess about ... | |
| Leak in the Compressor Area | 7/2/2008 |
| Q: "Hi, We have a Carrier 5 ton AC that's manufactured in 2001 for our home. We had an AC technician ... A: All good service folks have a H-10 leak detector which can measure leaks down to 1/2 ounce PER YEAR ... | |
| 24-V / 3 amp fuse | 7/2/2008 |
| Q: Having issues with my HVAC. At the forced air unit, there is a 3 amp fuse that blew, which caused a ... A: Right, Ken, you have a dead short in the 24v control circuit. You can fins it. It can be in the ... | |
| air flow | 6/30/2008 |
| Q: I have a dual HVAC system and had the upstairs system replaced. i contracted a guy who was to ... A: Air flow can be affected by the evaporator coil only if it is making ice & blocking the air flow. 17 ... | |
| A/C UNIT WILL NOT TURN ON | 6/28/2008 |
| Q: Two days ago I shut my a/c unit off(while running) from the Main circuit breaker and tried to turn ... A: Those breakers can be ornery. Once you've tripped them they may not reset, even tho you moved the ... | |
| Rheem Criterion 2 cooling problem | 6/27/2008 |
| Q: I can feel the sheetmetal become ice cold but the fan blower motor is not spinning. Is that a bad ... A: Turn on the fan only. No cool. Does it run ?? Test the run capacitor first. OK, bad motor. But next ... | |
| 4 speed to 3 speed conversion | 6/26/2008 |
| Q: I have an older Frigidaire (Heil?) furnace with a 4 speed blower motor (low, med-low, med-high, ... A: little late responding. Phone has been down for 3 days. For heat & cool you need low & high speed ... | |
| A/C compressor not always starting | 6/23/2008 |
| Q: I have a brand new Rheem Classic 90 (410A refrigerant) split system that works great 90% of the ... A: Sounds like you have a "sticky" compressor.How long is the warranty on it ?? 5 or 10 yrs ? Need to ... | |
| Control Panel Wiring | 6/23/2008 |
| Q: My outside unit had water on the ground and iced up tubing leading into house. I opened express ... A: Can't see any missing wires in the photo, Dereck. That's a piece of the wire laying in the box ? ... | |
| Carrier Heat Pump | 6/22/2008 |
| Q: Sir, I have a Carrier 38YMA which is 14 years old. The unit has been working extremely well. Last ... A: I would like to hire you to do my service work ! You good !!Fan motor windings do not have start ... | |
| A/C system in Florida | 6/22/2008 |
| Q: I had an A/C system changed out in my Florida 1920's bungalow in 2002. I am embarrassingly young and ... A: Well, your question comes to a person that hasn't had a license for at least 10 years !!! I work ... | |
| central heat/air | 6/21/2008 |
| Q: we bought a house last year-it's about 10yrs old- and the central air return is under the house in ... A: I live in North Texas. You too?? That's the way houses were built way back in the 50's & 60's here. ... | |
| Furnace Clearance | 6/19/2008 |
| Q: I want to rearrange a few things in my basement and as part of that i want to put a door for access ... A: is this a gas or electric furnace.?? For gas you need 6" from the front to the door. The door needs ... | |
| Need help on HVAC usage costs. | 6/19/2008 |
| Q: I have an an interior room in my house with no exterior walls. The central A/C for the house cools ... A: I'll get out my slide rule & figure that out ! Wish we had electricity that cheap in Texas. ... | |
| Lennox heat pump (10HPB48-10P) | 6/18/2008 |
| Q: I have almost the same question as what was posted in the post "Trane heat pump xl1200". I turned ... A: Easy test for capacitors is with an ohm meter set on it's highest reading. With no wires attached, ... | |
| air condioning | 6/18/2008 |
| Q: With air-conditioning season starting so has the debate as to leaving the air on and doors and ... A: The first thing cooling does is remove humidity, 2nd is the temperature of EVERY OBJECT in your ... | |
| Heil heat pump | 6/17/2008 |
| Q: I have a Heil system that does not cool. The capicitor, reverse valve and compressor are good. It ... A: The service valve on the suction line has a Schrader valve in it. Sometimes the hose connection ... | |
| wiring | 6/17/2008 |
| Q: I replaced the condenser fan motor on our churches a/ac package unit. It's running the correct ... A: Capacitors are NOT directional. Either way. Maybe test the capacitor. There sorta cheap these ... | |
| Trane heat pump xl1200 | 6/16/2008 |
| Q: I suspect that the cooling fan in the condenser unit is bad.I had ac on all night and awoke to warm ... A: Test the run capacitor first. If OK, it's the fan motor.2 speed condenser fan motors went out a long ... | |
| Honeywell Vision Pro 8000 wiring | 6/16/2008 |
| Q: I am installing a totally self-contained heatpump system in a trailer, and want to hook up a vision ... A: Yes, remove the jumper from R & Rc. What I don't know is the use of E for that tstat.It is usual for ... | |
| Heat pump size/efficiency | 6/15/2008 |
| Q: I have a 5 y/o, 1300 sq. ft ranch. It came with a 2.5 ton heat pump. I live in NC where the high ... A: Used a/c stuff has little market. They are good for garage cooling or a landlord looking for cheap. ... | |
| Weird Smell From Air Conditioner | 6/14/2008 |
| Q: There is a weird smell coming from the air vents - I would like to say it smells like a super ... A: Not too uncommon to smell something from the vents. Main that that could create a smell is the ... | |
| 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 test the accuracy of the thermostat. Got another thermometer to lay on the thermostat ... | |
| fan relay | 6/9/2008 |
| Q: 95 year trane unit, air handler fans runs non-stop, can the orignal relay#9100211Q132 be replaced ... A: I don't have catalogs to know what those numbers mean for a fan relay.I can say the coil voltage ... | |
| Residential AC | 6/9/2008 |
| Q: I have 2 zones with a 3 ton air conditioning unit. The bottom zone is Central air with a propane ... A: Oscar. I'm a little late responding as fast as I like. Got to admit we had our 60th anniversary ... | |
| a/c not real cool | 6/8/2008 |
| Q: I HAVE A TRANE WEATHERTON XE1000 WHEN WE MOVED INTO THE HOUSE THE AIR WAS REAL COLD NOW 3 YEARS ... A: It's possible but... Does the compressor still run ?? Sounds like the problem may be just needs ... | |
| AC not blowing cold | 6/7/2008 |
| Q: I have a Raheem HVAC system. After noticing that the air is not blowing cold, I went outside to find ... A: Without that outside fan running the freon pressure goes nuts & kills the pressure switch. First, ... | |
| Lennox Central Home Air Conditioner No Cool | 6/5/2008 |
| Q: Almost identical to another current question on this site. My system turns the distribution fan on, ... A: The breakers are only one of many causes for nor cooling. More are a burned contactor points. Or low ... | |
| HVAC split unit | 6/1/2008 |
| Q: I have an HVAC where the compressor is on the roof and the heater is in the hallway. The model of ... A: Are you using the green horsehair media ?? Some horizontal furnaces just lay the filter against the ... | |
| Rheem Split Unit | 6/1/2008 |
| Q: I have recently purchased a rehabbed home that was built in the 40's. The seller claimed that the ... A: These things cab act up at any time !! Usually on the weekends in Summer. Does the inside fan run ... | |
| heating | 5/31/2008 |
| Q: I was having a talk with a friend and we discussing heating and how to save money this coming ... A: A chart I have compares the amount needed to produce 1 mil btu's. It says it takes 293 kwh & 10.9gal ... | |
| help | 5/30/2008 |
| Q: heater work great all winter.except had to replace thermostate.turn on air cond. and blower would ... A: Where did you find all those bad people ?? Starts off with a bad motor & ends up changing a ... | |
| question on appropriate heat pump size | 5/29/2008 |
| Q: I have a 3200 sq ft home in Washington state (pretty mild weather). My furnace is a Rheem Criterion ... A: A couple of questions first. Is this a replacement deal or a new house?? (Replacement would give a ... | |
| Hard start kit question | 5/29/2008 |
| Q: Recently my a/c company installed a new evaporator coil with a TXV. Later they realized the coil was ... A: That lesson about using a start capacitor on a TXV valve coil is learned early on in this business. ... | |
| Neither AC nor fan will come on | 5/27/2008 |
| Q: We tried to turn our AC on last night for the first time this season. I set the thermostat to cool ... A: Check the wires behind the thermostat. red wire on R, green wire to G, white wire to W, blue or ... | |
| a/c compressor | 5/24/2008 |
| Q: I have a Bryant package unit, keeps blowing breaker. I think it could be compressor, removed black, ... A: Burned out motor windings for common & run windings. The freon ought to smell burned also.Add liquid ... | |
| TRANE XE1000 HEAT PUMP THERMOSTAT | 5/24/2008 |
| Q: EVERY ONCE IN A WHILE, OUR A.C. AUXILIARY HEAT "LIGHT" GOES ON WHEN WE LOWER THE COOLING SET POINT, ... A: Some control circuit wires crossed up for that to happen. Suggest checking the wires behind the ... | |
| Heil Air Conditioning Unit | 5/23/2008 |
| Q: My unit is 6 years old and I have had an issue with it eery summer for the past 4 years. The most ... A: I've experienced that problem before & was totally unable to stop it ! It was a small, short wire ... | |
| 2 year old Carrier evaporators are leaking | 5/22/2008 |
| Q: In May of 2006 we replaced our entire hvac system with all Carroer equipment. Recently the system ... A: Different vents will have different temps due to the heat load in the attic & different length runs. ... | |
| noise in Luxaire 12 EER | 5/22/2008 |
| Q: About a year after we got it, our outside unit started making a loud noise when it kicks on, ... A: If you have a mercury controlled thermostat & it is not level on the wall the mercury can roll back ... | |
| Thermostat | 5/22/2008 |
| Q: My AC quit working. The thermostat is not showing any readings. I checked the transformer voltage ... A: That thermostat use batteries ?? Test for 24v from red to all other connection on the thermostat. ... | |
| A/C age + compatability ? | 5/21/2008 |
| Q: My current a/c unit is as old as my home (1976) and is still hanging on by a thread, but just ... A: That is a 1992 model | |
| 2 year old Carrier evaporators are leaking | 5/21/2008 |
| Q: In May of 2006 we replaced our entire hvac system with all Carroer equipment. Recently the system ... A: Hey Jennifer, You said "both evaporators". You have 2 systems ?? Both leaking ?? I have not heard ... | |
| motor replacement to air conditioning unit | 5/21/2008 |
| Q: Our unit is 25 years old. Within the last month it would work for an hour and then the blower would ... A: Makes me sick for someone to charge a fee like that !!I am assuming that the "blower" is usually the ... | |
| YORK MODEL SJ - Not as cool as it should be | 5/20/2008 |
| Q: We just installed a YORK Model SJ unit in our mobile home: Latitude Series, R-22, 13 Seer, ... A: Mobile homes are not known for good insulation. 1# of freon shouln't make much difference in ... | |
| 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: Only thing on the inside unit possible is the blower wheel & motor. Sometimes the freon rushing in ... | |
| hvac | 5/18/2008 |
| Q: I am getting ready to install a new HVAC (air conditioner and air handler) in my ten-year old, ... A: Always a good question, Don. This tho is only my opinion of coarse. Scroll compressors are good ... | |
| Payne Warranty on Compressor | 5/16/2008 |
| Q: We bought a new house that came with a Payne A/C unit. The unit was serviced because it was not ... A: WOW ! You was ripped ! $60 OK. 2.75 hrs OK. $165 filter NOT OK. That's a $35 filter !!.No ... | |
| Carrier motor problem? | 5/16/2008 |
| Q: The tech wants to replace my blower motor for $450, but I'm not convinced that it's the problem. ... A: Never heard of condemning a motor for those causes in 35 years !! If one piece of the continuous ... | |
| Frozen AC | 5/14/2008 |
| Q: We live in TX where our Summers are always above 90. We just moved into a home with a central ac ... A: Ice forms when these things happen to the cooling system: Dirty filter, dirty blower wheel, dirty ... | |
| need heat pump advice | 5/12/2008 |
| Q: I need some advice about heat pumps. My parents home is in West Central Florida ( Hudson ) where the ... A: Nw that's some good info, Ken. Usually the other way.Bet the R value od cinder blocks ain't too good ... | |
| question about the fan | 5/12/2008 |
| Q: my question is about the fan. I noticed it was on this morning, even though it was on auto and the ... A: No need to worry, Angelique. There's lots of safety stuff on this equipment, plus circuit breakers. ... | |
| Payne Interior unit problem | 5/12/2008 |
| Q: The distribution fan in the interior unit is receiving voltage in all locations except one. I ... A: Capacitor test: With ohm setting on the highest, remove all the wires & test across 2 terminals. The ... | |
| A/C unit is freezing up | 5/11/2008 |
| Q: I have pretty fair knowledge of electrical and some a/c components. Limited on funds and down in ... A: Wow, a Chrysler still running !!! Those were really good units. Worse thing happened a freon leak ... | |
| replacing a Condenser Fan Motor | 5/10/2008 |
| Q: I have a Ruud Acheiver 10 High Efficiency air conditioning unit. I've been watching this motor go ... A: No problem. Kill the power & remove the motor. Propeller is first tho. Just cut the wires in a ... | |
| Inside Fan Motor stays on - Carrier AC with heat strip | 5/9/2008 |
| Q: Issue is blower motor stays on. Even with AC/Off/Heat set to Off, blower motor stays on, regardless ... A: One of the heat element sequencer disks on an electric heater can lock closed & keep the fan ... | |
| Trane XE 80 | 5/8/2008 |
| Q: We had a recent power surge come through our house as a result of some tornadoes. It took out 2 ... A: If you don;t have a fried circuit board you're lucky. The 3 amp fuse is an auto type plugged into a ... | |
| Carrier furnace 58ES | 5/8/2008 |
| Q: WHERE IS THE FAN LIMIT SWITCH LOCATED? AND IS IT EASY ENOUGH TO REPLACE? IF I HAD AN ACCURATE ... A: Don't have info that you have sent me a question before ?? Anyway, on the old style furnaces(NOT ... | |
| Air Conditioner Brands | 5/8/2008 |
| Q: We are looking to replace our AC units. I see information about trane/american standard and ... A: York makes their own compressors & they are way more expensive than other brands. Lennox is good ... | |
| Goodman air/furnace | 5/7/2008 |
| Q: I have a HVAC system that is two years old. I went to turn the air on the other day and the system ... A: Sounds like you've lost the control circuit. Turn only the fan switch on to test for fan. If none ... | |
| air handlers | 5/7/2008 |
| Q: Are variable speed air-handlers for Central AC worth the extra cost? How has their reliability been ... A: Good question, Steve.The best place to use a VS blower is where you need a quiet fan. Best example: ... | |
| Replacement Coil | 5/6/2008 |
| Q: I have a friend who had his air conditioner go out yesterday. He called a repairman, and he said ... A: Replacing the coil indicates it is leaking freon. If this is an "A" coil upflow, there are coils ... | |
| Black specks from air ducts | 5/5/2008 |
| Q: Black specks fall from the air duct in the room that is directly below the heating/AC unit in my ... A: This is a difficult question to answer. But not an uncommon question. Only thing I can imagine is ... | |
| 2 HEAT PUMPS 1 THERMOSTAT | 5/5/2008 |
| Q: At our church we have a very large room that has 2 separate heat pumps with 2 separate ... A: Yes. Use one of the units transformers to supply control voltage to both of them.So use the 24v ... | |
| e-coil cleaning | 5/2/2008 |
| Q: I have some experiance with various hvac repairs. I want to inspect and clean a Rheem evap coil. The ... A: Some coils have end plates screwed in that you can take loose that may give you a peek to the ... | |
| Why did my scroll compressor lock? | 5/2/2008 |
| Q: The HVAC man diagnosed a "tightly locked" Benchmark brand 3.5 ton compressor in my heat pump/air ... A: DON'T GIVE UP JARED !!!! 4 to 5 hours !!! 10# freon !!!! I can do those by myself in 2 hrs. No, ... | |
| Carrier heatpump | 5/1/2008 |
| Q: Howard, I have a carrier one piece electrical 2 1/2 ton heatpump, 11 years old. The cooling works, ... A: Something fishy here, Ron. When you call for heat, doesn't the heat from the heat pump turn on ?? ... | |
| Quotes, New Purchase | 5/1/2008 |
| Q: Right now I have radiant heat and am looking at upgrading to a heat pump system. So far I have ... A: Is that "air purifier" a true electrostatic filter ?? If so, those things are a lot of trouble. I'd ... | |
| Compact Room AC for 12v Mobile Use | 4/30/2008 |
| Q: I would like to apply a small room, 115v AC Air Conditioning unit to a 12v DC mobile environment ... A: Don't think they ever made window units smaller than 5000 btu. The compressor start up is usually at ... | |
| HVAC | 4/29/2008 |
| Q: Can you replace a 10 ser condensing unit w/ a 13 and not change the a coil, and if so what is the ... A: Yes you can, Bob. Some places cancel the warranty if the coil not replaced but most of us have ... | |
| Lennox 10ACB24-9P | 4/29/2008 |
| Q: I was reading one of your suggestions about a hidden switch on my unit. I don't seem to be able to ... A: I was referring to a switch on the outside unit that trips on a fan motor failure - i.e. high ... | |
| Payne Central Unit | 4/28/2008 |
| Q: I had a guy come out and look at my unit it was installed in 2001 . Propane heat split unit Payne ... A: I'd replace the gas valve. A familiar story.Furnaces can last 35yrs or more. He was hungry I guess. ... | |
| gunk in a/c condensate line? | 4/27/2008 |
| Q: I noticed our unit- which normally cools to whatever temperature we set it at- was not cooling. The ... A: (that's an interesting name !)Ice is caused by several things, like; low on freon, dirty filter, & ... | |
| new Hi eff furnace purchase | 4/26/2008 |
| Q: Have quotes on the lennoxG71p, bryant plus 90i, Ruud ultra hi eff furnaces with vs fans, wondering ... A: Best advice is move to Texas, where I live.Those variable speed fans are really expensive but good ... | |
| a/c | 4/25/2008 |
| Q: Our a/c unit kicks on and runs for 3 minutes then kicks off for 3 minutes and keeps this steady 3 ... A: First thing to test is the freon amount. May have electrical problems also if freon OK. Could be the ... | |
| short cycling heat pump | 4/23/2008 |
| Q: I have a Rheem RPKB heat pump that was installed almost two years ago. It now appears that the ... A: Lack of air across the coils will short cyle on a low pressure switch. If your system is operated by ... | |
| Trying to understand HVAC repair and replacement. | 4/22/2008 |
| Q: I am an investor and I’m trying to understand the AC repair and replacement market. I would be ... A: Personal opinions can vary all over the place Robert. Here's mine. I used to have about 700 ... | |
| Lennox A/c issue... | 4/22/2008 |
| Q: 2 months ago mid Feb. you helped me solve a heating problem. Your diagnosis was spot on! Now need ... A: The compressor is cooled by the returning freon.But it can also get hot from worn bearings & drawing ... | |
| short cycling heat pump | 4/22/2008 |
| Q: I have a Rheem RPKB heat pump that was installed almost two years ago. It now appears that the ... A: Looks like you have lost some freon & it is short cycling from a low pressure switch. Got gauges to ... | |
| Compressor runs but fan doesn't | 4/20/2008 |
| Q: My gas ac unit will run for how ever long it takes to get to programmed temp.but during process the ... A: Terry. Now the main thing to test is the run capacitor for the fan motor.You can test it with an ohm ... | |
| Replacing an AC fan motor | 4/19/2008 |
| Q: Just wanted to get an idea of how difficult it would be to replace the AC fan motor on a residential ... A: OK, here goes, Wayne. Kill the power. Access the motor & remove the propeller.And that task can be ... | |
| RUUD Filters | 4/18/2008 |
| Q: We have a RUUD UBHC 17J11SFF, manufactured 2/04. We're looking for HEPA-like air filters but ... A: Yo J. I like short names ! Don't be fooled by "electrostatic" filters. They are not. It takes ... | |
| Lennox A/c issue... | 4/18/2008 |
| Q: 2 months ago mid Feb. you helped me solve a heating problem. Your diagnosis was spot on! Now need ... A: Well hello again Dave! You have been tricked by a typical problem. The outside fan masks the fact ... | |
| blower on furnace will not stop | 4/17/2008 |
| Q: Heil gas furnace model EPD5536DC1, then it has another line under it that says d36pa15a1 but not ... A: I presume your furnace is controlled by a circuit board ?? Two things I can think of, Kim. One is ... | |
| Pressure switch in furnace | 4/16/2008 |
| Q: My furnace runs too many times at night. Each time it runs less than 10 minutes. Could it be the ... A: The pressure switch closes to tell the circuit board the combustion air blower is working. Actually, ... | |
| Trane XE800 High and low Pressure | 4/8/2008 |
| Q: I had noticed the Air Handler running almost constantly in the last month (Outside Temp 30-40 F). I ... A: Heat pumps are tested for freon only on the cooling cycle.The buzzing sound is typically the ... | |
| a/c no start | 4/8/2008 |
| Q: I have a Goodman air unit. When I turn the thermostat I hear a click on from the unit and a hum as ... A: Yo Joe, Sounds like the contactor points are burned a bit & won't make good contact. With the ... | |
| liquid cool assist for residential A/C | 4/7/2008 |
| Q: I'm trying to detemine if there is some kind of geothermal assist available for a/c units. I don't ... A: Well.Tom, you could dig a deep well in the backyard & run a loop of pipe in & out of it to precool ... | |
| Lennox AC/Heat Pump | 4/5/2008 |
| Q: Thermostat lost power...outside unit has power, air handler has power... replaced defrost circuit ... A: Does the fan run when the fan switch on the thermostat is "on"? Thats a control & power circuit ... | |
| Luxaire Evaporator Coil Access | 4/4/2008 |
| Q: I have an older home with a 1995ish a/c and furnace unit inside. I am having difficulty getting to ... A: It`s difficult to clean a coil. To do a good job, you have to remove the coils & the difficulty is ... | |
| Duo Therm Roof RV AC | 4/2/2008 |
| Q: My '76 GMC motorhome has two roof mount Duo Therm AC units model# 54615-035 and 54515-036 one has ... A: gosh, after 30 years you ought to be used to the vibration !! That is just a flaw in the compressor ... | |
| Carrier AC Problem | 4/1/2008 |
| Q: Howard, my AC system is a Carrier for a 2-story 1500 sqft townhouse and is less than 2 yrs old. A ... A: Best guess Tom, the transformer is heating up from a bad coil. A test would be read voltage on both ... | |
| air handler circuit breaker | 3/30/2008 |
| Q: I just moved into a really nice townhouse. The air works but I noticed that the air handler switch ... A: Circuit breakers can be an ornery as any electrical device.Also can cause fires too. So when they ... | |
| Rudd Furnace yr1991 | 3/30/2008 |
| Q: Furnace starts up with induction motor first and then cycles without the hot surface ignition ... A: Tricky stuff it appears. You can eliminate the thermostat by jumping across the red & white wires at ... | |
| AC/heat pump problem | 3/29/2008 |
| Q: Heat runs fine. When you cut the AC on the fan runs but the pump does not run. It does work with the ... A: The one thing that makes the heat/cool for a heat pump is the reversing valve.The inside fan runs ... | |
| Low Flame Sensor Signal | 3/29/2008 |
| Q: My Frigidiare 90+ downdraft natural gas has a "low flame sensor signal" indication. Which some times ... A: That ought to mean the electrical signal sent to the flame sensor from the circuit board that there ... | |
| Return Air Flow - Gas Furnace | 3/29/2008 |
| Q: Bought this house two years ago. We have been slowly renovating and I just pulled a return air vent ... A: That is a pretty good way to have good circulation, is to use the wall as a return air duct. Return ... | |
| Heat pump not starting up | 3/26/2008 |
| Q: I have a Carrier heat pump that stopped working all of a sudden. Even if you put the fan switch to ... A: That's a first, Mohammad, to get a picture ! Circuit board can be identified by the part number of ... | |
| Heating/A/C thermostat | 3/26/2008 |
| Q: I live in North Texas ( DFW) area. I have a single story 3000 sq Foot house with two A?c's/ ... A: The digital thermostats have taken over the market & there are a lot of varieties.Stay away from ... | |
| home furnace/ac | 3/23/2008 |
| Q: Furnace switches on when thermostat says area is too cool. Runs as it is supposed to, but when ... A: This sounds like a fan running(no heat)since the temperature switch is not satisfied, Ron.If this is ... | |
| American Standard Furnace | 3/19/2008 |
| Q: I've had ongoing problems with my 21/2 year old American Standard furnace. The most recent problem ... A: The pilot light or the ignitor has to be proven before ignition, then the flames proven by the flame ... | |
| limit switch settings | 3/19/2008 |
| Q: I have a keeprite furnace, it has an intermittent switch I think it's about 10yrs old, anyway the ... A: Ought to shut off the fan at about 90 deg.But, if the furnace is controlled by a circuit board, the ... | |
| Heil DC90 Model# NTGM100EHA2 intermittently blows cold | 3/15/2008 |
| Q: I am having the problem in which the draft inducer comes on but the pilot fails to go to full ... A: The flame sensor sanding may have screwed up the sensor. Just need to rub it with a rag to polish ... | |
| Carrier Infinity | 3/13/2008 |
| Q: Howard, A Manual J was done on my home and determined that I need: 16,524 BTU's for cooling the 2nd ... A: Well, Brian I am a conservative & over the 35 yrs in the a/c business my opinion goes that way. ... | |
| 1 A/C or 2 ? | 3/12/2008 |
| Q: i am in central CA in a 2,000 sq.ft house. half of the house is open plan (almost one big room) ... A: Think the best approach, Rick, would be a separate system in the attic for the 3 br, 2 bath side. ... | |
| frigidaire | 3/11/2008 |
| Q: I have a frigidaire model # FG6RA 096C 16B and was moving humidifier wires. The cap came off a wire ... A: Little trouble, huh? Ya never know what happens on a ground fault like that.Do you have a 120v ... | |
| Furnace blower motors | 3/9/2008 |
| Q: I am about to upgrade my furnace to a 95% efficient one and add AC at the same time. Is there an ... A: The only advantage that I would see adding a variable speed blower is the quietness. I you have a ... | |
| Goodman GMP100-3 | 3/6/2008 |
| Q: I just replaced the blower motor and fan wheel.After I hooked everything up the blower works for the ... A: A blue wire to the gas valve is puzzling since a blue wire usually is the control wire from the ... | |
| Won't keep running NUG9075FGB1/GUM075N12A | 3/5/2008 |
| Q: I have an old Keeprite/Comfortmaker which heats my house for the last 10 years very well. It's a ... A: Your`e a good fixer, Bruce.I like do-it-yourselfers, as long as they don`t take too much apart that ... | |
| Concord gas furnace CG80UB150D20D | 3/4/2008 |
| Q: Install furnace in November. I notice burner cycling on/off. Works when bypassed. Original limit ... A: There`s no air shutters at the ends of the burners ?? Maybe not with combustion air regulated by the ... | |
| Heater troubles | 3/4/2008 |
| Q: I am not sure of brand of heater...It has a diagnostic light on board that flashes three ... A: Wow,John, that`s a killer problem. Does the igniter ever light ?? I presume the LED code is still ... | |
| Concord gas furnace CG80UB150D20D | 3/3/2008 |
| Q: Install furnace in November. I notice burner cycling on/off. Works when bypassed. Original limit ... A: Yo Edward,3.5 " water good. Those flames need more air if they are yellowish.You`re on natural gas, ... | |
| Heater troubles | 3/3/2008 |
| Q: I am not sure of brand of heater...It has a diagnostic light on board that flashes three ... A: need to remove the hose & insure its not obstructed, nor the opening at the induced draft motor. ... | |
| Comfortmaker high efficiency furnace problem | 3/1/2008 |
| Q: I have a 12yo Comfortmaker gas furnace model# NUG9075FGB1/GUM075N12A - For the past month, on ... A: In Texas we draw air from the attic into a sealed closet.The induced draft motor provides the air ... | |
| Comfortmaker high efficiency furnace problem | 2/29/2008 |
| Q: I have a 12yo Comfortmaker gas furnace model# NUG9075FGB1/GUM075N12A - For the past month, on ... A: Test for gas leaks with a soap & water mix. Stir it up to make bubbles & wipe across the gas joints. ... | |
| Installing Humidifier | 2/29/2008 |
| Q: I have a Trane Forced Air Furnace Model: GUCDA-10-A Type: 174-470-2-A I want to install the ... A: The air flow will only be from the high pressure supply side. So you can mount on the high side ... | |
| Trane XE 90 | 2/28/2008 |
| Q: I have a 1995 Trane XE 90 Heat Pump. The diagnostic light blinks 2X, "System Lockout, No Flame, ... A: That is just turning the power plug around to reverse the polarity. No plug, will have to splice the ... | |
| Installing Humidifier | 2/28/2008 |
| Q: I have a Trane Forced Air Furnace Model: GUCDA-10-A Type: 174-470-2-A I want to install the ... A: Black is hot, white is ground.Ground is anything that is grounded, so the case, or copper pipes are ... | |
| Gas Forced Air Furnace | 2/27/2008 |
| Q: The furnace is an Armstrong Air Ultra V unit. The blower motor starts, but ignition does not ... A: Remove the tube between the induced draft motor & pressure switch. Blow thru it to test for ... | |
| heater will not ignite | 2/26/2008 |
| Q: My York diamond try to ignite three times and then goes into lockout mode. The seven flashes of the ... A: Aha, you have an electric ignition for the pilot only,After sensing the pilot, the gas valve opens ... | |
| Rheem Criterion II | 2/26/2008 |
| Q: My heater is of electronic ignition control.. When commanded on by thermostat, initial sparking ... A: There is a flame sensor that CAN cause that to happen, Richard. The sensor is usually a metal rod ... | |
| American Standard Freedom 78 | 2/25/2008 |
| Q: Howard, I've got a American Standard Freedom 78 in my home that blows cold air from time to time, ... A: So you must have a variable speed blower ?? Assume the furnace is circuit board controlled also ?? ... | |
| Tempstar condensing propane furnace | 2/25/2008 |
| Q: Late this past week I noticed sounds from our Tempstar furnace that sounded like the air from the ... A: Furnace problems can echo throughout the house! Open the door to access the blower & feel the blower ... | |
| furnace filter | 2/25/2008 |
| Q: sorry if this is a stupid question but i recently moved into my new home and there is a heil ps80 ... A: There are no stupid question, only stupid answersKim. Normally, the filetr is behind the lower door ... | |
| heater will not ignite | 2/24/2008 |
| Q: My York diamond try to ignite three times and then goes into lockout mode. The seven flashes of the ... A: Put on a coat, first.Does the igniter glow ?? Does this model light a pilot flame, then the burners ... | |
| 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: Pretty) sure I have seen this on trailers. As the "inferno: (I like that name) starts, it sucks the ... | |
| Lennox heat pump | 2/23/2008 |
| Q: we had an issue with the a/c system not blowing cool air we called out a tech who said the system ... A: Adding freon means you have a leak somewhere. Favorite place is the evaporator coil. Need to sniff ... | |
| Powered Humidifier wiring | 2/22/2008 |
| Q: How should my new powered humidifier be wired? My brother in law installed it for me. He ran a new ... A: Humidifier only runs when the blower is on. So if the board has an H terminal that ought to do it. ... | |
| induced draft motor | 2/22/2008 |
| Q: i have a tempstar 90% furnace that wont run. its only 18 months old. the stat will call for heat ... A: Whoa ! not good, Tony. Typical electronics, acting up so soon.Those code LED flashes are usually ... | |
| 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: A salt water creek ?? Interesting. That explains the stainless steel.First thing, what`s wrong with ... | |
| Furnace Draft Inducer Blower Replacement | 2/21/2008 |
| Q: I need to replace the blower, the wheel is wobbling and getting stuck. The gas-pak unit is a: Inter ... A: Hey George, Don`t think I have the answer either.I think the main thing to deal with is the shaft ... | |
| Heater not blowing heat | 2/20/2008 |
| Q: I have a dual heat pump. The heating in the attic is working but the unit unit (big fan thingy) ... A: I`m sorta confused, Susan. I`ll quote you as " the heating in the attic is working..." & " the fan ... | |
| TAPPAN FORCED AIR GAS FURNACE | 2/19/2008 |
| Q: I have a 30 year old Tappan Forced Air Gas Furnace (Model SGUF 140842 E-7 Series). It has a ... A: NOW your talking good when you said the flames are HUGE> Thats a very good tip that the regulator in ... | |
| intake air vent | 2/18/2008 |
| Q: We have a big intake vent which is right next to our tv in our family room (basement of house.) It ... A: No,No. Find some thick, heavy shag carpeting. Glue a piece on the floor behind the grille. Find some ... | |
| Am Std Freedom | 2/18/2008 |
| Q: read following question here...We have a Freedom 78 American Standard furnace in our 13 year old ... A: This is sorta a common problem.Has the LED trouble lights flashed? O r does your furnace have a led ... | |
| Setting the thermostats | 2/17/2008 |
| Q: We are having trouble learning how to set the thermostats in our just built home (not programming, ... A: Start off by adding a LOT of ceiling fans.Particularly, one in the 2 story foyer.Then another in the ... | |
| TAPPAN FORCED AIR GAS FURNACE | 2/15/2008 |
| Q: I have a 30 year old Tappan Forced Air Gas Furnace (Model SGUF 140842 E-7 Series). It has a ... A: Your question, Karen were the burners supposed to do that ? I said no. So now here is possibly your ... | |
| Furnace | 2/14/2008 |
| Q: 8 yr. old Bryant heats to temp on stat and then cuts off. A qwik flip of the circut breaker restarts ... A: Could be a bunch of things.Was the circuit breaker tripped, or just reset?? There are several over ... | |
| 15 Year old WaterFurnace | 2/13/2008 |
| Q: I have a 15-year old WaterFurnace brand GeoThermal unit that has been diagnosed with a Freon leak ... A: Rush to the local a/c supply house & get a can of "leak sealer". That has hit the market about a ... | |
| Lennox Propane Heater | 2/13/2008 |
| Q: I recently had a two-year old Lennox Direct-Vent propane heating unit replaced with a new one. The ... A: Yes, yes, yes you should be concerned with the soot.Not good. Those flames better be all blue, but a ... | |
| Air purifier giving off a smell, may be motor | 2/10/2008 |
| Q: Testing your DC motor experience. I have just bought a second hand Sharp Plasmacluster air ... A: I`m not familiar with that kind purifier so I can only guess. My gues would be that thing was ... | |
| HVAC Question | 2/10/2008 |
| Q: I'm loosing a ton of warm air generated by my HVAC system this winter because the only return ... A: A return air is sized so the airflow is about 400cfm/min across the grille(s). This ensure the ... | |
| Lennox G60 error codes | 2/8/2008 |
| Q: I am having the same problem as Joanne is. Alternating LED's. It happens intermittently, maybe ... A: Didn`t check my answer to Joanne. I`ll just shoot you with what can be wrong with your furnace. It`s ... | |
| Split system approaching its usefull life | 2/8/2008 |
| Q: I purchased a used house in S.W.Fla. 4 yrs ago.Came with a 1998 Lennox heat pump 13 seer 3.5 ton ... A: Sort of a common question. I have been an independent for 30 yrs, & a conservative type.So my ... | |
| HVAC residential Compressor related | 2/7/2008 |
| Q: ... Generally speaking, if I had a symptom of a tripped 100 amp breaker, a burnt smell, how long do ... A: depending on the locked rotor amps of your compressor it could kick a 100 amp breaker. The locked ... | |
| drain pan and drain pipe | 2/7/2008 |
| Q: I have 2 questions: #1 I have a Carrier Model # FX4ANF048 that was installed in late 2001. The ... A: You forgot what material the pan is ! I will presume it is plastic. Puron does not crack ... | |
| Air Quality | 2/5/2008 |
| Q: We have an air quality problem I hope you can help me with. When our furnace clicks on we ... A: Thing of it is different people have different smell sensitivity. I have had bad experiences with ... | |
| Furnace Control Board | 2/5/2008 |
| Q: Furnace Model # P1UKD12N0401A Problem is the ignitor stays lit all the time, only goes off when ... A: That`s a heck of a problem, Chuck. All of the problems seem to point to the board.It has the control ... | |
| Gas furnace not blowing very hot air | 1/31/2008 |
| Q: I have a gas furnace (comfortmaker FBF050B12AA, serial # L002729897)that is 7 years old. When the ... A: I would check the duct system to see if they are OK. With all the burners working that amount of ... | |
| hear pump | 1/30/2008 |
| Q: I have a Lennox heat pump that the compressor will kick off about every sixteen hours. I will have ... A: What you really need is a recording amp meter to follow what`s going on with the compressor (if ... | |
| thermal fuse (or what) | 1/29/2008 |
| Q: I have a Trane Air Handler and need to replace some old, rusted fuses-took one out and it says ... A: I had the wrong fuse in mind.That`s a second fuse protecting against an overheat situation.Don`t ... | |
| Emergency Heat Inoperative | 1/28/2008 |
| Q: Howard, I have a two and a half year old Carrier heat pump system with an electric emergency heat ... A: Wow, Chad that`s a good one !! Have to eliminate things one at a time to arrive at some kind of ... | |
| noma 52-2570-6 thermostat | 1/26/2008 |
| Q: Good evening. I've never posted to this forum before but I thought I'd try... I just bought a ... A: You have a heat pump. Is the new one for a heat pump ?? I`m not familiar with that H designation. I ... | |
| burners sometimes don't light on AS Freedom 78 | 1/25/2008 |
| Q: We have a Freedom 78 American Standard furnace in our 13 year old home. I assume it's the original. ... A: The blower works on a time delay only. Does the igniter glow each call for heat ?? If so, the flame ... | |
| I think Heat pump? | 1/25/2008 |
| Q: I have a carrier model # 38Ycc. The problem has happe three or four times. The outside uit shuts off ... A: Could be several things, Mike. One is the point on the contactor are burned & not making contact. ... | |
| Lennox G60 gas furnace will not maintain heat set on thermostat | 1/24/2008 |
| Q: I have a Lennox G60UH-070-02 (2002)gas furnace which has been fine until now. At night or when I ... A: Check the thermostat to be level. Check the heat anticipator behind the front to be set about at .4 ... | |
| Thermostat | 1/24/2008 |
| Q: Should you set the heat and leave it alone or adjust it at night. This is a 2 story house. Upstair ... A: Typical problem for 2 story houses with 1 unit ! If all the bedrooms are upstairs I would turn off ... | |
| Heating problem | 1/21/2008 |
| Q: We just moved in to a new house that has a fairly new Heil H9MPD heater. It seems to work fine when ... A: Need to run a test on the thermostat.Wonder if it is a mercury or digital ?? If mercury controlled, ... | |
| RE: Tappan furnace wire question | 1/20/2008 |
| Q: Howard, I have a Tappan model 100-16, and the product literature that comes with it says that it ... A: There`s only about 50 rpm difference between adjacent speeds. Hi speeds for heating can produce ... | |
| Help me build a ground source geothermal please! | 1/20/2008 |
| Q: I am looking for help with building a ground source geothermal this spring. I own a tractor and a ... A: Google it, Jessica. I have worked on them is all the experience I have. Most different thing is the ... | |
| rheem criterion 2 gas furnace | 1/19/2008 |
| Q: My furnace fails to start, and I most of the time move the filters around to get it to start again. ... A: My wife used to call me at the office(1 hr away) that the washing machine flooded the place! Sounds ... | |
| Bard Furnace | 1/18/2008 |
| Q: My furnace will shut down every 2 or 3 days? when I turn it on and off it cycles again for anothe 2 ... A: Tricky to find source of a problem like that. Start off reversing the power supply to the furnace. ... | |
| Induction gas furnace | 1/18/2008 |
| Q: Furnace starts to turn on blower for 30 seconds but cuts off and flashes 6 times for trouble code. ... A: Bet that water has been sucked into the hose from the draft motor to the air pressure switch. Dry ... | |
| Air Conditioning System | 1/17/2008 |
| Q: I'm getting ready to build a 2600 sq foot house. R-14 insulation in walls and R-49 in attic. Also ... A: I live in Texas & here 500sq ft/ton is a rule of thumb.I gather this is a 1 story house. If so, it ... | |
| gas furnace location | 1/17/2008 |
| Q: mr. livingston i believe i have recieved some bad advice on the location of my gas furnace when i ... A: That flex ducting should have 3" of insulation on it for your location.That attic is as cold as the ... | |
| replacing heat pump | 1/15/2008 |
| Q: We are about to replace our heat pump here in Columbus Ohio. There are some differences of opinion ... A: Charlie. I`ll ask you why are you replacing the system ?? Age ?? Still running OK after 10 years ?? ... | |
| new unit vs dehumidifier | 1/14/2008 |
| Q: Howard, I was talking with Fred about my problem but he went on vacation. Would you be so kind as ... A: Holy cow, Ed what a discussion ! What a nasty problem.Can`t believe someone screwed up a 1 story ... | |
| Heat pump | 1/13/2008 |
| Q: I have had a new heat pump and central air unit installed and I thought my gas furnace was only for ... A: That gas furnace is the secondary source of heat. The compressors supplies the first stage.Look at ... | |
| Gaffers and Sattler Gas Furnace | 1/12/2008 |
| Q: I have a wonderful G&S Model CF100-1 gas furnace that has run great in my home for the last 30 ... A: I can still get parts for 50 + year old wall furnaces.True, that parts prices rise for old furnaces ... | |
| Lennox 15CHPX | 1/12/2008 |
| Q: The unit (Lennox 15CHPX)was installed September, 2007. This is a split system. We've been dealing ... A: Something fishy here, Malou.You paid high dollar for that Lennox & it no work ?? Is that circuit ... | |
| Burning smell coming out through heater vents | 1/11/2008 |
| Q: About two days ago, we noticed a burning/maybe gas coming out through our heater vents. The smell ... A: Furnace smells occur mostly on electric furnaces when something hits the elements when its on. If it ... | |
| Gaffers and Sattler Gas Furnace | 1/11/2008 |
| Q: I have a wonderful G&S Model CF100-1 gas furnace that has run great in my home for the last 30 ... A: Don`t mess with it. Let `er run.Those parts like each other & a new part would screw up the ... | |
| aircon fires | 1/11/2008 |
| Q: We have an window type airconditioner. A technician says that it has a compressor problem, i.e. ... A: There was a dead short in the wiring, maybe at the compressor, but maybe not.The compressor is a ... | |
| Gas Furnace | 1/9/2008 |
| Q: My upstairs furnace is not burning correctly. Spitting out small flames when the gas company turned ... A: If the gas trouble persists for 20 to 30 min.the line would be purged. Now, when a gas line is ... | |
| Trane XE 80 Furnace | 1/9/2008 |
| Q: "I have a Trane XE80 that is doing the following: When call for heat is sent nothing happens. The ... A: It is a normally open switch. Ohm it when the IDMotor starts up.Have some reports of the hose ... | |
| Trane XE 80 Furnace | 1/8/2008 |
| Q: "I have a Trane XE80 that is doing the following: When call for heat is sent nothing happens. The ... A: With a good induced draft motor, the next event is the air pressure switch closing completing the ... | |
| lennox elite series cb29m | 1/6/2008 |
| Q: Livingston, I have a lennox elite series air conditioner/heating system. The fire damper is closed ... A: Lennox builds strange stuff, Gayle.Complex electronics are the rule.Good stuff tho when the kinks ... | |
| Trane XE 80 Furnace | 1/6/2008 |
| Q: "I have a Trane XE80 that is doing the following: When call for heat is sent nothing happens. The ... A: Has the induced draft motor ever run in the tests ?? Is that motor good ?? I would separate it & ... | |
| Heater | 1/6/2008 |
| Q: I have a Honeywell thermostat set at 68 degrees. I wake up every morning and it shows the heat is ... A: How old is that stat, James ?? No doubt it uses a mercury bulb. Take the cover off & check the roll ... | |
| continually running furnace | 1/5/2008 |
| Q: We have an older Steel City standing pilot gas furnace, the problem seems to be is that it is either ... A: I wouldn`t have changed the fan/limit length.The fan settings should be set at about on at 110 & ... | |
| fan running continally | 1/4/2008 |
| Q: Forced air, natural gas 18+ years old, had limit switch replaced last year. Unit kicks on, burners ... A: That is a symptom of a stopped up evaporator coil. The dirt accumulations are on the lower side of ... | |
| Ruud Achiever 90 Plus | 12/21/2007 |
| Q: We have a 9 year old Ruud Achiever 90 Plus Furnace. Starting toward the end of last winter, I began ... A: You are right on Casey, that is a malfunctioning air pressure switch. Need to remove the hose from ... | |
| part numbers | 12/21/2007 |
| Q: I'm looking for a parts number manual for a Goodman GMH950703BXA gas furnace. I emailed Goodman to ... A: Sorry Richard, can`t offer any help.Don`t particularly like this company when years ago they had a ... | |
| Furnace won't Ignite and blower is constant | 12/20/2007 |
| Q: I have a 20-25 yr old Bryant furnace which will not ignite and the blower/fan constantly runs. The ... A: Ignition problems caused by several problems. One is a gas pressure problem .The backfire can be ... | |
| carrier gas furnace | 12/20/2007 |
| Q: Howard I've been working on a 90 model gas furnace with a spark igniter, 1st problem could not get ... A: With a fan/limit control with a manual knob to pull for on, push for off with the knob missing maybe ... | |
| Furnace won't Ignite and blower is constant | 12/19/2007 |
| Q: I have a 20-25 yr old Bryant furnace which will not ignite and the blower/fan constantly runs. The ... A: (that`s what I was called many years ago)The blower is controlled by a relay on the circuit board on ... | |
| Thermostat | 12/17/2007 |
| Q: Livingston I just replaced two thermostats with programmable thermostats. I have a combined ... A: Well, well, John, you have the cooling wire from the thermostat in contact with the heating wire. ... | |
| electric heat | 12/17/2007 |
| Q: My father has been really ill so I hope you can help me for we don't have much money to call someone ... A: hate to see anyone getting ripped off. I can see he didn`t do any good.Moving wire s wouldn`t solve ... | |
| ID fan & Circ Air blower won't stop | 12/17/2007 |
| Q: OK, the equipment is a 1999 Heil DC 90 condensing nat gas furnace with honeywell ST9120C4057 ... A: Wow, Dave, never saw anyone pulling so many wires ! ! I think if I did that I would NEVER get it ... | |
| Adding a central humidifier to an AC only (no heat) system | 12/16/2007 |
| Q: We just bought a 1 1/2 story home in Maine with first floor only AC (no air heat) installed in 2001. ... A: Will not do too much good. You need to measure the humidity in the Winter & Google a psychometric ... | |
| Returns | 12/16/2007 |
| Q: What is the concern in not having a return in a bedroom. We are on a forced air system? A: The return air path from the house back to the return air grille(s)needs to be just so long. that ... | |
| GMP075-4 no power | 12/15/2007 |
| Q: I've got a Goodman GMP075-4 gas furnace that is not getting power. I replaced the ignitor because it ... A: The induced draft motor runs on 120 v as you found out. The quick test for low & hi power is to turn ... | |
| Heat not working | 12/15/2007 |
| Q: When we returned home this evening we noted that the thermostat was set for 69 degrees yet it was 64 ... A: I`m gathering Dan, 2 different problems. When the burners have flames & then it shuts off the flame ... | |
| Furnace fan won't turn off | 12/15/2007 |
| Q: I have a Lennox natural gas heater that is at least 35 years old and works great. I replaced the ... A: Was the low fan speed used for the heat speed ?? Usually, the red wire is used for that speed. If ... | |
| carrier furnace/air conditioner 1 piece unit | 12/14/2007 |
| Q: i have a carrier air/furnace combo, sits outside. my problem; sometimes when i turn the unit on i ... A: Must be a gas unit since you "can hear it running" but no fan. Not possible for an electric furnace ... | |
| Comfortmaker RPJII Furnance | 12/14/2007 |
| Q: Symptom: Occasionally and with increasing frequency the temperature in the house drops below the set ... A: to begin with #1: That`s an indication of thermostat failure. If it is a mercury controlled stat, ... | |
| propane supply | 12/13/2007 |
| Q: My neighbors propane ran out and when it was refilled the furnace will not restart.Went by ... A: I have seen that happening a lot when I worked on mobile home furnaces. I found that when a tank is ... | |
| Rheem a/c not working | 12/13/2007 |
| Q: I am a snow bird and am back in Florida. The a/c was not working when I got back although I had left ... A: Monica, A factor is how old & in what shape is the unit ?? Pretty clean unit?? Works good ?? ... | |
| Rheem a/c not working | 12/12/2007 |
| Q: I am a snow bird and am back in Florida. The a/c was not working when I got back although I had left ... A: Lots of things can just happen to this stuff, Monica.First thing is to test the freon, then the ... | |
| Heating Airconditioning Unit has ice on it | 12/11/2007 |
| Q: I discovered our unit has ice on the outside of it...what causes this? A: If that is a heat pump that is normal to collect ice on the outside unit. BUT, at some point when ... | |
| Garage electricity will not go back on | 12/10/2007 |
| Q: Livingston, Some of my rooms on my first floor bi-level had a short (basically the electricity cut ... A: Just switching breakers doesn`t do any damage. Here`s the catch tho, the breaker switch can be in ... | |
| Carrier/Night&Day Furnaces | 12/9/2007 |
| Q: I have five Night and Day Furnaces in my house. Two repeatedly blow their HBC controller and one ... A: When the 3 amp fuses blow that shows there is a short in the low voltage control circuits some ... | |
| Vent Motor | 12/7/2007 |
| Q: I have a GDPI series furnace and the vent motor never shuts off. How do I fix it? Please help A: The notor runs from a call for heat thru the circuit board. If the thermostat is not calling for ... | |
| Goodmam gmp100_4 will not continue to run | 12/6/2007 |
| Q: The heater will start up and ignite, burners will come on and run for a short time. I have replace ... A: its not vacuum, its pressure. Remove the hose between the induced draft motor & pressure switch & ... | |
| cfms | 12/5/2007 |
| Q: Can you tell me how to calculate cfms in flex air duct for a new construction side job.Two story ... A: I have installed only 2 variable speed blowers. Had trouble with one. Had to adjust the switches to ... | |
| Electrical Furnace | 12/4/2007 |
| Q: I have a Coleman Central Electric Furnace model number 3500A816, the problem when I call for the a/c ... A: The heat fan circuit goes thru the fan /limit to turn on the fan. Replacing that switch should have ... | |
| cfms | 12/4/2007 |
| Q: Can you tell me how to calculate cfms in flex air duct for a new construction side job.Two story ... A: easy question a long answer.You need to go buy a "ductalator" at a local a/c supply house. It`s a ... | |
| heating problem | 12/3/2007 |
| Q: mr. livingston, last friday my heating at home abruptly stopped working. i live in a condo with a ... A: Could be a failure of the gas valve. When calling for heat, test for 24 volts at the gas valve. If ... | |
| Problem with Freedom 80 | 12/3/2007 |
| Q: Hey Howard. I have a American Standard Freedom 80 model # AUD140C96051 serial # R261WWH2G and I'm ... A: That`s an interesting name. Sure would like to know the interpretation of the LED flashing 4 times. ... | |
| Propane furnace burner problem. | 12/2/2007 |
| Q: I have a Tempstar propane furnace. The problem is only one out of the three burners are burning when ... A: Now that`s something you discovered Terry. Somebody never installed the complete conversion kit for ... | |
| colmen gas furnace | 12/1/2007 |
| Q: my furnace went out.they replaced the contol board and it ran good for 5 days and quit again.I set ... A: I would remove the tube from the air pressure switch & see if its clean, then check the outlet & ... | |
| Propane furnace burner problem. | 12/1/2007 |
| Q: I have a Tempstar propane furnace. The problem is only one out of the three burners are burning when ... A: Wow, Terry, that`s a good one ! Never have experienced that problem. If no gas is coming from 2 ... | |
| rheem heat pump, humidifier install | 12/1/2007 |
| Q: I have a rheem heat pump, installing a honeywell 365 powered humidifier, humidifier plugs into 120v, ... A: First off, Norm I wouldn`t recommend a humidifier on a heat pump. Only gas furnaces produce hot ... | |
| Heat | 11/30/2007 |
| Q: We just bought our home in Indianapolis it has a Trane XE 78 unit it keeps shutting the heat off but ... A: How much dust was on the filter ?? And, in the area around the blower ?? I`ll bet the previous owner ... | |
| 3 year old 3 ton 12 seer Ruud Heat Pump | 11/30/2007 |
| Q: 1. the intesnity of warmth is lacking- milk-toast heating- so runs a long time. I have an April Aire ... A: I hate to see folks ripped off. Happens too often in this business/ Ask your friends & neighbors who ... | |
| furnace... | 11/29/2007 |
| Q: I have a 3 yr old modular house in Central NY. It is heated by a 3 yr old Thermopride fuel oil ... A: I live in Texas & we would freeze at 67 deg ! Heard that fuel oil price really increased this year. ... | |
| Furnace air temperture | 11/29/2007 |
| Q: How warm should the air be that comes out of the registers A: Easy question, difficult answer Ken. The answer depends on the heat load or loss of heat from the ... | |
| Gas Heater/AC Unit | 11/28/2007 |
| Q: The A/C portion of the unit works. However, the heat portion does not. When the unit engages, ... A: Does the spark light a pilot light or light the main burners?? Later models have a glowing ignitor ... | |
| ruud 80 plus intermittent no heat | 11/26/2007 |
| Q: I have a 1989 ruud 80 plus unit, model # UGDE-14 ERAJS upflow furnace. I have an intermittent ... A: What you said needs clarifying. "the pre purge sequence starts, the draft inducer motor does not ... | |
| airflow management | 11/26/2007 |
| Q: I have a 25+ yr old Freidrich central unit in a house I just bought. Sucker runs like a champ. The ... A: Take care of that Freidrich. Probably have another 8 yrs on it! These service guys see that & all ... | |
| American Standard Freedom 90 | 11/25/2007 |
| Q: My furnace is now flashing 3 times (pressure switch problem)per my service paper work. Is there ... A: Running late today Jim. Hope you haven`t froze yet. Need to remove the hose between the induced ... | |
| Rudd Super Achiever 80 series | 11/25/2007 |
| Q: According to instructions on outside cover there is supposed to be a Honeywell on/off gas control. ... A: Problem with answering these questions, Virgil is not knowing the details of all these furnaces. So ... | |
| gas furnace filling with water, tripping pressure switch | 11/25/2007 |
| Q: Howard, I have a Goodman GMN080-4 90% gas hot air furnace, about 15 years old. When it comes on, it ... A: Boy, Brian, we got a weird one !! Just another wild thought. You have a humidifier on this furnace ... | |
| gas furnace filling with water, tripping pressure switch | 11/24/2007 |
| Q: Howard, I have a Goodman GMN080-4 90% gas hot air furnace, about 15 years old. When it comes on, it ... A: Better stop that water quickly,Brian. Rust out the heat exchanger. That isn`t condensate but can`t ... | |
| American Genaeral Freedom 78 furnace | 11/24/2007 |
| Q: Furnace heats the house properly ,however ,turns off and on all night and day without stop time in ... A: Usually, on a complaint like that Ken, you are "hearing" the fan noise short cycling, not the ... | |
| breaker | 11/23/2007 |
| Q: I have a six year old house. A/c cools great and so does heating. But when i use heater, after ... A: Yea, Mike like last night at 3AM at 35 deg & snow!I live in Arlington. You must have electric heat ... | |
| Carrier combo unit | 11/22/2007 |
| Q: Have a 15 year old Carrier combo unit. Last year tech replaced gas valve with new Honeywell unit. ... A: After you bled the air out & you had heat it usually will not have any more air in the lines from my ... | |
| fuse keep blowing | 11/21/2007 |
| Q: when i turn my unit on it runs for about 5 Min then the fuse on the inside the air handler on the ... A: There is a short in the low voltage circuit. If you were trying to run the cooling, check the 24v ... | |
| Heat unbearable upstairs in WINTER!!! | 11/20/2007 |
| Q: We recently bought house w/Lennox A/C-Heat Pump. Our master bedroom is upstairs over the garage. ... A: Can`t stop the physics law that hot air rises.Cold air sinks.I would close completely off all the ... | |
| Is there a filter on a gas Armstrong 38HWC182-5A furnace/air conditioner? | 11/19/2007 |
| Q: .. I have moved into an apartment (first one in 35 years), and it is REALLY dusty. I have opened ... A: Sometimes there was no place provided for a filter in the furnace. It needs a place that can seal ... | |
| Intake Vent | 11/19/2007 |
| Q: In the colder months, the first floor of our house seems to get cold as if there is a draft. I ... A: Hey Paul, Are there foundation vents around your house that allow cold air under the house ?? Air ... | |
| 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: Boy, that is a crazy problem. I can think of several things to check out but they are just ... | |
| TRAIN XE 1200 model TTP060C100A1 | 11/17/2007 |
| Q: What are some possible reasons that the outside compressor makes a loud humming noise when the heat ... A: Is this unit a heat pump, Yale?? Main thing that can hum in the outside unit is the coil in the ... | |
| Cozy Floor Furnace | 11/17/2007 |
| Q: I have an older Cozy floor furnace. The pilot light is lit but I could not get the heater to kick ... A: Wow, Brad, you must feel like a mole! I am thinking the problem may be "resistance" Maybe in the ... | |
| Diamond 80 P3HUA12N06401c Furnace no heat | 11/17/2007 |
| Q: I have a Diamond 80 P3HUA12N06401c, when the unit calls for heat the main blower is coming on, not ... A: I`m not acquainted with any particular control boards.The induced draft motor starts first on call ... | |
| Central Heating and Air Unit | 11/16/2007 |
| Q: Yesterday my C/ h&a unit seemed to be working fine, minus the fact that my air unit quit blowing ... A: Cooling first: Wonder if the coil has a freon leak to cause the guy to say you need a new one.Now ... | |
| HEAT PUMP | 11/16/2007 |
| Q: I HAVE A NORDYNE SPLIT SYSTEM HEAT PUMP #F3TBA 030KA WITH HEATER KIT B3BM 030K AB. MY SON PUT ON A ... A: The new thermostat is for a heaT Pump ??? Sorry, can not provide info to connect the wires since ... | |
| pressure swithc | 11/14/2007 |
| Q: i have a question about a Rheem 90 imperail furnace.the heat doesnt appear to be working correctly. ... A: Are you referring to the round pressure switch that has a hose from the induced draft motor ... | |
| Central A/C not responding | 11/13/2007 |
| Q: Our A/C is not responding when we turn it on. The outside fan unit does not start. There is no sound ... A: Does the inside fan run when calling for cool ?? Locate the contactor rely in the outside unit & ... | |
| heating flow | 11/13/2007 |
| Q: my girl friend has lived in the double wide trailer for a year now and she has had this problem for ... A: Double wides have an interconnecting duct between the 2 sides. Does the cold air come from the same ... | |
| American Standard furnace | 11/12/2007 |
| Q: My blower motor on my furnace (model lgf120e100 will not stop running after the house has reached ... A: The length of the probe inside the furnace needs to be matched. Then, does your fan control also ... | |
| flame sensor | 11/12/2007 |
| Q: For the umpteen year my Weatherking gas furnace turns on and the ignitor heats up and starts the ... A: The sensor is the small rod sticking into the flame on the burner. Kill the power,remove the 2 wires ... | |
| convert gas pack to heat pump | 11/11/2007 |
| Q: I live in Raleigh NC. I want to covert my 3 ton gas pack to a 3 ton heat pump. Is this possible ... A: Can`t convert, Mike. Too much to change.The lowest SEER is now 13. That`s good enough. Don`t get ... | |
| American Standard furnace | 11/11/2007 |
| Q: My blower motor on my furnace (model lgf120e100 will not stop running after the house has reached ... A: I am assuming you have the standing pilot type furnace ?? Doesn`t that dial have other temperature ... | |
| Main fan problem | 11/11/2007 |
| Q: Carrier model #58SX100-cc-1 circa 1987. When call for heat is made inducer fan works, furnace lights ... A: The fan circuit is different for heat & cool modes as are the fan speeds. Usually, the heat fan ... | |
| Propane AC | 11/10/2007 |
| Q: Howard, Do you know of anyone that makes a propane AC unit? I am fortunate enough to have free ... A: Well, hello lucky.I`m paying $2.38/gal !!There used to be gas powered unit made by Arkla Servel that ... | |
| PROPANE FURNACE | 11/10/2007 |
| Q: OUR HEIL 7000 FURNACE LIGHTS NORMALLY BUT WILL BACKFIRE UP THE BURNER JET OCCASIONALLY. IT SEEMS TO ... A: Tricky problem. I would test the incoming gas pressure to confirm it`s OK. Is the gas valve fully on ... | |
| trouble starting new York gas furnace | 11/10/2007 |
| Q: Just installed a York gas furnace 120,000 btu's 90% downflow unit GY9S-DH. Can't get it to start. ... A: How frustrating !!! Test the induced draft motor & air pressure by removing the hose from the draft ... | |
| lennox gas furnace | 11/9/2007 |
| Q: my furnace stays on for a few days then goes off again. i clicked the reset switch and it would ... A: You need to move to Texas. It`s 80 down here. I`m sorry but you didn`t supply enough info to help ... | |
| janitrol gmn100-4 furnace circuit board blinks | 11/8/2007 |
| Q: Just installed new circuit board, igniter not turning on (glowing)which was installed a year ago, ... A: Wow, Diane we got to get you some heat, FAST. But sorry, I don`t have the blink codes for your ... | |
| Attic humidity | 11/7/2007 |
| Q: I just recently had an thermostatically operated attic fan installed. I was advised afterwards that ... A: You don`t want to remove moisture in the Winter, you want to add humidity. The heat dries out the ... | |
| Rheem furnace 1x2000 | 11/6/2007 |
| Q: My Rheem furnaces will trip out periodically and I have to reset one or more of the limit switches ... A: Now that`s an interesting name! Have you removed the flame sensor & drag over it with a rag ?? If ... | |
| Induced draft blower cycling on and off | 11/6/2007 |
| Q: I have a 13 year old high efficiency natural gas furnace. I'm having no heating problems with it ... A: That motor turns on with a call for heat only.Sounds like there may be a short across the red & ... | |
| Heat Pump fan operation | 11/5/2007 |
| Q: My fan works properly when the thermostat calls for heat, but it doesn't always stop when the ... A: A heat pump blower operates at only high speed. heat or cool. That fan is energized by a time delay ... | |
| Heating balance. | 11/5/2007 |
| Q: I have recently moved into a newly built 2 story home. I have the HVAC unit on, at this time, to ... A: Hot air rises, cold air falls. 2 story house have an open stairway that allows that to happen in ... | |
| no light from my smartvalve | 11/4/2007 |
| Q: I have a concord 80 plus gas furnace. I had a severe power spike in the neighborhood and the furnace ... A: Does the inside fan run when the fan switch on the thermostat is turned ON ??? The fuse on the ... | |
| 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: Insure the pilot flame is striking the top 1/2" or more of the thermocouple. Did you hold down the ... | |
| Furnance | 11/2/2007 |
| Q: Sir: I have a new nat. gas fired furnance in my attic. It takes from 5-8 mins for the blower to come ... A: Gas lines for furnaces up to about 100,000 btu use 1/2" lines. 3/4" above that.The circuit board ... | |
| Burnt electronics 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: Wow, Eric that`s a lot of amps for the blower motor!!That`s gotta be the cause of the smell but the ... | |
| Wood Stove | 11/1/2007 |
| Q: No basement just a crawlspace. I run my propane forced air furnace blower on low 24/7 with my ... A: Not sure what the problem would be but if you could just install a flex duct from the ceiling of the ... | |
| Furnace control problem | 11/1/2007 |
| Q: Howard, I've been having problems with my gas furnace the past few days. Furnace is American ... A: Think the place to start is with the "check line polarity" Turn off the power supply & reverse the ... | |
| American Standard Trane furnace problem | 10/31/2007 |
| Q: My gas forced air furnace is not lighting. The fan blows cold, but that's it...it doesn't attempt to ... A: Well, that`s a first John, to get a photo of the furnace!!The 4 blinks for an open switch would be a ... | |
| Gas Furnace | 10/31/2007 |
| Q: I got the pilot light lit and it stays on. When I first lit the pilot light the burners started as ... A: Is the gas valve on the gas line all the way on Bryan ??? How about the knob on the gas valve?? ... | |
| white powder coming out of vents when ac unit on | 10/31/2007 |
| Q: I have white powder in my apartment when I run my ac unit. It is a very fine powder that covers ... A: The place you can find powder is inside the heat exchanger of the furnace.That`s a natural ... | |
| blower fan for air circulation does not work | 10/30/2007 |
| Q: Blower fan for air circulation does not come on in auto or manual. I opened the door to the fan and ... A: Follow the 2 brown wires from the fan to the run capacitor. Need a volt-ohm meter to test it. If ... | |
| centtral issue follow up button not working | 10/30/2007 |
| Q: Subject Central air/heat issues new installation Question Howard. My parents recently decided ... A: Well, Gregory what a deal !!! A 110,000btu furnace would have the cfm capacity for the size house. ... | |
| Heil furnace blows cold air, SOMETIMES!! | 10/29/2007 |
| Q: Well if anyone can answer this then you did better then the contractor I had come over!! I have a ... A: The induced draft motor that starts the cycle has to blow enough air to close an air pressure ... | |
| Ameristar Furnace | 10/29/2007 |
| Q: Can you tell me where to find information on a 2005 Ameristar Furnace? I just had the unit cleaned. ... A: By all means call the guy back.American Standard makes that furnace. Can`t find any info on it on ... | |
| two stage furnace, one stage thermostat | 10/28/2007 |
| Q: I just bought a two stage furnace, how do I jumper the control board to still use my standard ... A: I presume your gas valve has high & low output of heat on the one gas valve ?? Or does it have a W1 ... | |
| honeywell rth230b | 10/28/2007 |
| Q: I bought this house and when the temperature is really cold in the house, my Honeywell still reads ... A: Put an accurate thermometer on the thermostat for a good read of temperature. Take off the cover & ... | |
| CLEARANCES FOR GAS FIRED HEATERS | 10/28/2007 |
| Q: I am rehabilitating an apartment complex in NJ. I am retro fitting each unit to have its own heating ... A: These high efficiency furnace nowadays are pretty small, about 42"high X 17" wide, about 28" deep, ... | |
| gas furnance | 10/27/2007 |
| Q: I have a brand new gas furnace (KeepRite C8PN100F14B). It works well for a few days after it is ... A: Have you checked the blinking of the LED on the circuit board ?? It can diagnose the problem for ... | |
| Central AC Fan Motor running at 1/2 speed or less | 10/26/2007 |
| Q: We have a 3 ton central unit in our home that is only a few years old. Its gotten kinda cold the ... A: Electric furnaces use 240 v power. One leg on the fan motor bad runs the motor on 120v at half ... | |
| Frost on condenser pipes. | 10/26/2007 |
| Q: Howard, I live in dallas and have a Amana heat pump (AC & Heat), just today I noticed that my ... A: Could be several things wrong. Could be the defrost cycle was operating erroneously. You could the ... | |
| Central air/heat issues new installation | 10/26/2007 |
| Q: Howard. My parents recently decided to get central a/c. They had their old heater and all duct work ... A: Wow, I hate to hear a story like that,Greg! Those high ceilings need a lot of airflow to circulate ... | |
| replacing... | 10/25/2007 |
| Q: I am replacing the a/c heating system in my home in washington dc. the question i have is as ... A: Carrier repair parts are pretty darn expensive as is the equipment. The variable blower is an ... | |
| 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: Goodman changed the brand name from Janitrol to Goodman. Maybe the reason was we used to call it ... | |
| Question about home A/C | 10/24/2007 |
| Q: Problem: A/C starts cooling but quits. Have noticed that fan on outside unit starts but stops after ... A: Did the tech check the fan motor run capacitor ?? It could be just a $10 or less capacitor. If it ... | |
| janitrol gmp100-3 | 10/24/2007 |
| Q: My furnace will come on the hot surface ignitor will light and the gas will come on there are 4 ... A: Sounds like the flame runner is clogged, or even the orifice on the flashing burner is clogged too. ... | |
| Forced AIr Furnace "Gibson" | 10/24/2007 |
| Q: I had a new (Gibson)forced air furnace installed professional two months ago. It is a 90k BTU w/ a ... A: Insulate, insulate, Dave. Can to use duct insulation which is black & really fuzzy on one side, or ... | |
| Heat Blower not comming on. | 10/23/2007 |
| Q: Well I went to turn on the heat on my 3 ton HVAC for the first time last night and nothing. The ... A: The blower has 2 speeds, one for heat, high speed for cool. The heat speed is controlled thru a ... | |
| Furnace only buzzes when turned on | 10/23/2007 |
| Q: I recently bought a fixed up home with an upgraded brand new gas furnace and hot water heater. The ... A: Easy way to test for power, Anthony, is to turn on the fan switch only. That proves low & high ... | |
| Heating Problem | 10/22/2007 |
| Q: This morning it was a little bit cold in my house so I decided to turn on my central electric ... A: During the Summer cooling season dust is bypassing your filter & hanging on the heat elements. Then ... | |
| re:tenant tampering with air conditioner | 10/20/2007 |
| Q: I rent out my basement which contains the furnace/electrical box. I think my tenant is tampering ... A: Well, Kelly I could say evict the tenants & you`ll find out !Naw, just kidding. The tenants could ... | |
| Mobile Home Furnace | 10/19/2007 |
| Q: I have a Intertherm propane fired furnace. It is about 8 years old and in very good condition. The ... A: Sounds like you have a mobile home model furnace, Jason ?? If that is correct I am unsure that an ... | |
| Amana furnace | 10/18/2007 |
| Q: We moved into a house with an Amana Air Command furnace that we think was installed in 1974 or 95. ... A: The filters are somewhere in the return air, Carolyn.Start off looking at the base of the furnace ... | |
| heatpump | 10/18/2007 |
| Q: What is proper way to hook up hoses on heatpump in both heating and cooling modes? Which is best way ... A: I presume your talking about the liquid & suction line, Chad.Those lines connect to the evaporator ... | |
| AC won't stay on... | 10/18/2007 |
| Q: Our Bryant air conditioner blew it's capacitor (run/start). The repair guy replaced the capacitor, ... A: Sounds like you have a heat pump having an outside sensor.Either way I would run a test at the ... | |
| Hardwiring Air Purifier to HVAC | 10/9/2007 |
| Q: I'm installing a UV air purifier in the return plenum of an Gas forced air heating system. The ... A: You could supply the power with a relay that has a single, normally open switch & a 24 volt ... | |
| airflow/black furnace filter | 10/9/2007 |
| Q: I had a new Gibson electric furnace installed three months ago. It was adapted to my air ... A: that`s a good question.If your furnace is in a closet sitting on the return air plenum I would ... | |
| Warm Basement?? | 10/8/2007 |
| Q: Howard, My basement has been noticeably warmer than the main floor this summer. It use to be the ... A: There was one more thing that it could be. But only if you have an electric furnace down there. It ... | |
| Heating not working on central ac unit | 10/7/2007 |
| Q: This morining the heat was turned on (and it worked) then it turned off automatically; but it did ... A: The inside fan works by a time delay, not by heat or the "on" switch.You must have a circuit board ... | |
| Forced Air Heater Pilot Won't Ignite | 10/6/2007 |
| Q: When the thermostat asks for heat, the draft fan starts, the pilot light igniter starts arcing, but ... A: Sounds like Mark that the pilot orifice is stopped up.Common problem. Maybe run a test by holding a ... | |
| circuit board short | 10/6/2007 |
| Q: "i have a bryant model AC1CN036B that was installed in 1995. my dog bit thru and broke thermostat ... A: If your unit is NOT a heat pump there was only 2 wires on the outside the dog broke. If those 2 ... | |
| furnace not lighting in heat mode | 10/5/2007 |
| Q: The ignitor comes on, then after a few seconds it goes out and the blower comes on but the burner ... A: The blower is on a timed circuit so that`s OK.Doesn`t sound like the pilot comes on either. The ... | |
| outside ac unit | 10/4/2007 |
| Q: I have noticed my outside unit runs continually. There is also ice on the outside of the unit. Can ... A: You need another contactor in the outside unit. The points are burned & are sticking closed. Your ... | |
| HEIL DC90 not lighting | 10/3/2007 |
| Q: I have a HEIL DC90 gas furnace that has stopped lighting. It is about 9 years old. The small blower ... A: Good description of your problem. Thanks. Sounds like the pilot flame is not being proved by a ... | |
| Heating - Furnace | 10/3/2007 |
| Q: We have a Rheem Classic 90 high efficiency furnace installed in a garage to heat a garage apartment. ... A: Most of the limit switches have a little button that pops out when tripped. If so, just push the ... | |
| fried equipment | 10/2/2007 |
| Q: i recently replaced a tranformer on the indoor unit of a split system, aparently an electrician ... A: Holy cow, Richard !! What a mistake.Could be the contactor coil in the outside unit was fried ... | |
| How to light furnace | 10/1/2007 |
| Q: Howard, I have a nineteen year old Lennox furnace. Am confused as to how to light it, although I ... A: The only other kind of pilot control I have ever seen has a separate valve for the pilot.Follow the ... | |
| Furnace turns off too soon | 10/1/2007 |
| Q: our furnace turns itself off way before it has reached the desired room temperature. Furnace and ... A: A 3 yrs old furnace is controlled by a circuit board. Some boards have little dip switches that can ... | |
| Transformer Brunt | 9/29/2007 |
| Q: I have a Rheem model RBHA 17J10SFAA furnace and heat pump. Yesterday the thermostat screen went ... A: A short in the low voltage power somewhere.Could be the coil on the contactor in the outside unit. ... | |
| condensation pump safety switch | 9/29/2007 |
| Q: The compressor would not come but every thing else worked, went out to the compressor to see if the ... A: The condensate pump wiring is simple. There are 2- 24v wires to the condensing unit, usually a red & ... | |
| Poor Dehumidification with Old Furnace | 9/28/2007 |
| Q: Howard - I have a Lenox G14 Pulse furnace with a multi-speed blower. Added a new Lenox 2 speed AC, ... A: This a heat pump ?? They run heat & cool at high speed blower. Were the coils replaced when you got ... | |
| central air and heat unit maintenance - coils | 9/27/2007 |
| Q: I live in an apartment and it looks like the coils in my system (inside the apartment) are in pretty ... A: Christie, that is the typical rental unit coil you described! It`s all because tenants NEVER change ... | |
| return air | 9/27/2007 |
| Q: Howard, I just relocated your answer to me about return in ceiling, but had already posted another ... A: Well, you are a sharp lady, Paula. Always happy to help you. I gave away a lot of time over the ... | |
| Furnace upgrades | 9/26/2007 |
| Q: I have an older (1980) electric furnace/heat pump system with a single-speed blower and noise from ... A: Heat pump inside fans need to run on high speed for both heat & cool.That`s what you have.Best thing ... | |
| return air | 9/26/2007 |
| Q: Howard, I just relocated your answer to me about return in ceiling, but had already posted another ... A: Now I recall your problem, Paula! That`s goooood info you sent. I live in Arlington, by the way.Did ... | |
| Help! Need a new a/c unit | 9/26/2007 |
| Q: Howard. It's 4:30am and I haven't slept all nite worrying about this. I'm in your neck of the ... A: Van. R22 will be phased out in the next few years. The wholesale price has already tripled! BUT, ... | |
| Help! Need a new a/c unit | 9/25/2007 |
| Q: Howard. It's 4:30am and I haven't slept all nite worrying about this. I'm in your neck of the ... A: Wow, Van, what a night !! I would stay away from Puron (R410) It`s pretty expensive stuff & higher ... | |
| air handler | 9/24/2007 |
| Q: i have a old carrier air handler 230 volt and changed the old t-stat out ive been doing this for 15 ... A: Is there a separate fan/limit switch mounted on the furnace ?? If so, there is a knob on the front ... | |
| Coil and refrigerant lines freezing up | 9/24/2007 |
| Q: I have had 4 service calls recently because the coil and refrig lines freeze up. They have tested ... A: Well, well Jamie lets see how many ways can cause these things to make ice! You have a tricky one ... | |
| airconditioner | 9/23/2007 |
| Q: I had my two year old 3 ton 13 seer airconditioner fixed ,it had a small leak and now it is not ... A: With 92 ambient temp the suction line should Chilly & even sweating. Did he fix the leak ?? Was it ... | |
| Float switch reset? | 9/22/2007 |
| Q: My attic-mounted air handler/evaporator has a switched condensate trap. At the suggestion of the ... A: Never heard of a reset switch on a condensate pump.There, usually, is just a microswitch tripped by ... | |
| HVAC not working | 9/21/2007 |
| Q: I came home yesterday to find my a/c not running. I've checked the circuit breaker and confirmed ... A: If no inside fan runs when fan switch is turned on test for 110 volts thru the wall switch or ... | |
| HEIL 90 propane furnace, doesn't ignite | 9/21/2007 |
| Q: I have a HEIL DC90 furnace, and just got the propane tank filled, but the furnace won't ignite. The ... A: All that is controlled by a circuit board Ken.Got to have a pilot light first to light the main ... | |
| a/c unit | 9/19/2007 |
| Q: I am have an air conditioner unit that is not blowing through the vents in the house, the outside ... A: Yo Cindy,How about a collapsed duct?? Or a blower motor not running at rated speed?? Or an ... | |
| older home hvac | 9/19/2007 |
| Q: I would like to know if I can replace my air handler with a smaller unit or get rid of it entirely. ... A: If you have lots of money you could rip out all that stuff & install 1 or 2 or more( 1 per floor) ... | |
| Hvac Coils | 9/17/2007 |
| Q: Said i had to also clean the evaporator coils.Seeing how the coils is hard to get to he said about ... A: Yes, Brad. The hot air from the furnace also flows thru the evaporator coils. That`s way too much to ... | |
| Heat pump problem | 9/16/2007 |
| Q: When I switched the thermostat from cool to heat, it made a clicking sound and then never came on. ... A: Dead short somewhere.With the breaker reset, turn on the fan only(no heat) at the thermostat. If the ... | |
| Humidifier | 9/14/2007 |
| Q: A recent HVAC Rep suggested I install a humidifier as part of a new system (both furnace & A/C). I ... A: Somewhat, John. Heat always dries out the air. Humidifiers will help some. If your family has dry ... | |
| heat...... | 9/13/2007 |
| Q: I have a modular home in Northern Ind. where it gets to 0deg. in the winter( a summer home) Can you ... A: Modular houses are not known to be well insulated.You never know how much insulation is in the floor ... | |
| c/a | 9/13/2007 |
| Q: The fan on my Bryant High eff. furnace won't turn on, on the heat cycle, but it works for the ... A: The fan for heat is controlled by a time delay on the furnace circuit board. Actuated after flame is ... | |
| Electrostatic filters on HVAC | 9/12/2007 |
| Q: I have a Rheem AC that recently failed (6 months out of 5 year warrenty, figures) and I am getting ... A: Have to define "electrostatic" filters, Joe. Does this filter have wires connected to it ?? If not, ... | |
| panel to furnace wiring for air handler | 9/11/2007 |
| Q: I just had a heat pump and air handler/electric furnace installed. I noticed that the furnace has a ... A: Those breakers are, most likely just disconnects, Joel. 60 amps for 3 - 5kw heat elements, 20 for ... | |
| Compressor Not Turnig Off | 9/10/2007 |
| Q: I noticed a warmer than normal temperature in my house one day this week, so I went outside to check ... A: The points are still not making contact after the cleaning. What you said indicates the thermostat ... | |
| High pitched noise from coolant line | 9/9/2007 |
| Q: I have 2 questions for you: 1) We have an ac unit in the attic and the coolant line runs from the ... A: You must be about ready for the funny farm with all those irritating noises ?? Noise #1: Usually, ... | |
| airflow | 9/9/2007 |
| Q: the air from the vents is cool but the air is barley coming out had the t-stat replaced a month ago ... A: I presume the air flow has been good in the past ?? That is, this lack of flow is a change ?? Lack ... | |
| New Puron system, not enough air, bad service and design | 9/8/2007 |
| Q: Need advice/info: I hired a well-known HVAC company to install central air in my oceanfront, ... A: How many tons cooling was that, Robin?? How many sq. ft. is your house.2 story ?? Big attic ?? High ... | |
| THERMOSTAT WILL NOT COME ON | 9/8/2007 |
| Q: MY THERMOSTAT WILL NOT COME ON AT FIRST IT WAS SET 90 DEGREES AND WE COULD GET TO TURN DOWN OR UP. ... A: Now that`s an interesting name, Eboni! Does the inside fan run when the switch is turned on at the ... | |
| Compressor Not Turnig Off | 9/8/2007 |
| Q: I noticed a warmer than normal temperature in my house one day this week, so I went outside to check ... A: Those are pretty standard Mike. Go to a local a/c supply house & get a 30amp, 2 pole, 24 volt coil ... | |
| moved thermostat - HVAC won't work | 9/7/2007 |
| Q: I'm remodeling and cut the thermostat wire to move the thermostat. I reconnected the thermostat ... A: Is that a digital thermostat that would have both common & hot wires from the transformer ?? That`s ... | |
| Dual wall-mount A/C thermostat | 9/6/2007 |
| Q: I have a radio building with dual 3-ton Bard wall-mount air conditioners. This is a 200SF building ... A: Wow, 6 tons for 200 sq. ft. !!! You could use it for a meat locker too. Each one of those units has ... | |
| Compressor Not Turnig Off | 9/6/2007 |
| Q: I noticed a warmer than normal temperature in my house one day this week, so I went outside to check ... A: A common problem,Mike! The contactor in the outside unit has burned points & is stuck in the closed ... | |
| Follow up | 9/4/2007 |
| Q: This is a follow-up from my previous question (below). The fix is a little above me, so we called ... A: Sorry I`m late Joe. Have been in the hospital for a overnight stay. That`s too much for a circuit ... | |
| Blower fan problem | 9/4/2007 |
| Q: Howard. I have a blower fan problem. Originally I thought it was control board problem. Therefore, I ... A: Well done description of your problem, Bill. As I follow the description it seems like your ... | |
| Inside Unit Freezing Up | 9/3/2007 |
| Q: "Hi, we recently started having problems with our inside evaporator coils freezing up and not ... A: Freezing is caused by a low amount of freon OR a dirty air filter.Weak suction valves in the ... | |
| goodman heat pump | 9/2/2007 |
| Q: I have a goodman package heat pump and homneywell pro 3000 thermostat. I need help with the wiring. ... A: White should be on w1, your heat pump primary heat.I`m not familiar with that stat nor did you say ... | |
| Thermal shutdown problem | 9/1/2007 |
| Q: I have a Amana 14 seer RCE, about 2 years new. In a nutshell, the problem is that the cooling fan ... A: After knowing that the motor run capacitor is OK (changing or testing) if the motor fails its the ... | |
| AC Blower will not turn off | 8/30/2007 |
| Q: I have a gas furnace, with an AC unit outside the house. We have two separate thermostats, one ... A: Yo Joe, stuck fan relay. Sounds like the relay is a separate relay?? (Rather than having a solid ... | |
| AC/ Coil identification | 8/30/2007 |
| Q: I have a carrier split system and have been told the inside and outside units don't match in size. ... A: How in the world did that happen, Jerry ?? That`s a 5 ton(060)inside & 3(036)outside!That evaporator ... | |
| old air conditioner, odor | 8/30/2007 |
| Q: At some point the original owner of our circa 1929 house installed in-wall air conditioning units in ... A: Need a little cleaning, Meghan, Best way is to pull the innerds that may just slide out of the case ... | |
| Air Cond. Compressor not Running | 8/29/2007 |
| Q: My Goodman A/C Compressor stopped running. Model CK24-1B Serial 951002322B. Furnace & Thermostat ... A: Does it trip the breakers to the outside unit when trying to start ?? But since nothing runs I would ... | |