You are here:
- Home
- Home/Garden
- Home Appliances
- Heating, Air Conditioning, Fridge, HVAC
Heating, Air Conditioning, Fridge, HVAC/Questions Answered by Expert Norval Trimborn
| Subject | Date Asked |
| Bryant Heat Pump | 12/29/2011 |
| Q: Let me give you a little info first. I live in the mid atlantic region of the US. This is a Bryant 3 ... A: It seems as if voltage is dropping out at some point to cause this. You should be grateful that the ... | |
| Enough BTU's? | 12/28/2011 |
| Q: I am gutting my 1911 home and putting in a new heating system. The house is two story with heated ... A: The furnace with the higher BTU "output" would heat the house slightly faster. Oversizing can cause ... | |
| Enough BTU's? | 12/28/2011 |
| Q: I am gutting my 1911 home and putting in a new heating system. The house is two story with heated ... A: The only correct way to determine the size of the furnace (in BTUs) for your house is with a Manual ... | |
| Furnace/Heating problem | 12/24/2011 |
| Q: Having gas furnace problem. Sometimes it lights and comes on, and sometimes it locks out and won't ... A: I know that during these hard times it is never good news to hear that the best choice might be the ... | |
| Lights dimming | 12/20/2011 |
| Q: Every time my new Trane central air comes on, the lights in the entire house dim momentarily. This ... A: The symptoms would seem to point to either a poor connection somewhere between the incoming power at ... | |
| Lennox GHR26 Series Furnace Malfunction | 12/14/2011 |
| Q: I own in a condo with central heating in the building. Each batroom has a Lennox GHR26 furnace pump ... A: Your fault code with the LEDs seems to indicate a problem with the pressure switch making. This ... | |
| home heat/ac unit transformer | 12/13/2011 |
| Q: My heater/ac unit is totally inop. It does not turn on when the heat or ac is commanded on via the ... A: Sorry, you messed me up by calling your supply voltage a 120 volt supply. Supply voltage is measured ... | |
| condensor freeze over | 12/12/2011 |
| Q: I have a Rheem heat pump my condensor is frosting over , what would be the most likely problem, ... A: When heat pumps run in the heat mode the cold coil is outside(condenser). Because it is normally ... | |
| Carrier gas furnace ignition problem | 12/11/2011 |
| Q: .. I just replaced an inducer fan motor on an older Carrier furnace (bearings were bad). This unit ... A: You haven't given a model and serial number for the furnace, so I don't know exactly what you have. ... | |
| Cold pipe vs warm pipe | 12/10/2011 |
| Q: I'm in FL and my question is about residential central A/C, the blower unit that's inside the house ... A: With the A/C cooling the house the small uninsulated line can be anywhere from cool to very warm ... | |
| home heat/ac unit transformer | 12/8/2011 |
| Q: My heater/ac unit is totally inop. It does not turn on when the heat or ac is commanded on via the ... A: What you have is a transformer with a multitap primary that can be used with supply voltages of ... | |
| Replacing thermostat | 12/5/2011 |
| Q: I have a house with radiant electric heat in the ceiling.The house and radiant heat is 35 years old. ... A: It depends on how the honeywell thermostat connections are marked. It appears that Bl and W are your ... | |
| Bryant Thermidistat replacment - up grade | 12/1/2011 |
| Q: I have bryant thermidistate model TSTATBBPRH01-B, here in the good ole south, it has failed ... A: Just because the old model thermidistat has been discontinued doesn't mean that they are not still ... | |
| central H/A | 11/30/2011 |
| Q: I have 2 units 1 downstair, 1 upstairs. My house stays very dusty (proof on furniture) When we check ... A: The filters are there to protect your units. 100 percent of the air in the house does not go through ... | |
| LUX TX9100E tstat on Goodman PHK024-1 heat pump | 11/29/2011 |
| Q: I have a heat pump with emergency heat, Goodman PHK024-1 with a 10kW heat strip. I am replacing ... A: I believe that both the white and the brown wires on your heat pump do the exact same thing (turn ... | |
| Payne Wiring harness | 11/29/2011 |
| Q: The front panel on the gas furnace says Payne, the top part for ac has carrier. My heat is not ... A: The model and serial number of the furnace should be somewhere inside the cabinet or on the doors. ... | |
| LUX TX9100E tstat on Goodman PHK024-1 heat pump | 11/29/2011 |
| Q: I have a heat pump with emergency heat, Goodman PHK024-1 with a 10kW heat strip. I am replacing ... A: Your Lux T-stat allows for 2 stages of heat when used for a heat pump. 1st stage is the heat pump ... | |
| New furnace fan too loud | 11/26/2011 |
| Q: The new furnace is blowing up a noisy and strong storm through the vents. Apparently, we got one ... A: More area in the existing supply duct/register or adding a second supply to the room would help with ... | |
| New furnace fan too loud | 11/25/2011 |
| Q: The new furnace is blowing up a noisy and strong storm through the vents. Apparently, we got one ... A: You should have had the new system sized correctly for the existing house and a separate system ... | |
| Replacing Baseboard Heater | 11/22/2011 |
| Q: I have an electric 240 baseboard heater with an integrated relay in our living room. It has 2 small ... A: The safest way to wire a line voltage thermostat to a 240 volt baseboard heater is to use a double ... | |
| Gas Forced Air Furnace | 11/18/2011 |
| Q: My wife and I live in an apartment in Brooklyn, NY and we recently bought a house about 50 miles ... A: The lower that you set the thermostat during the unoccupied period the less money you will spend ... | |
| Heating problems | 11/13/2011 |
| Q: I have a 11 year old Carrier Gas Pack. The blower on my unit is taking longer than normal to come ... A: From your description it sounds as if you may be having an intermittent problem proving the flame. ... | |
| heat smoke in house | 11/7/2011 |
| Q: had cells replaced in central air and heat because one had a large cracked. it has worked fine for ... A: Because oil is used in the process of making heat exchangers it is not unusual for the furnace to ... | |
| Heil DC90 Furnace | 11/6/2011 |
| Q: Hoping you can help with my question. We have a Heil DC90 Series Furnace Serial number L954038323. ... A: There are a number of things that could cause the symptom you are describing. I think that the ... | |
| HVAC replacement | 11/3/2011 |
| Q: I have a 12 year old Amana system (5 ton and 3 ton) HVAC system that we have taken bids on. It's ... A: Being a service technician rather than a salesperson I am not really sure if the systems are ... | |
| Heat Pump isn't cooling | 10/28/2011 |
| Q: Have just had heat pump installed. It heats very well but when shift to cool, system is blowing warm ... A: There could be a number of mechanical causes that would need a service technician to diagnose, but ... | |
| Repairing Central A/C lines running under slab foundation | 10/28/2011 |
| Q: I live in Minnesota and have a townhome with a slab foundation. The lines from the central A/C ... A: Most line sets in slab houses that I know of weren't run through PVC pipe. Before you tear up the ... | |
| heat/air | 10/27/2011 |
| Q: I have a rheem ,quite old and mosel # rrggd07e30jkr.I turn it on and the heat (gas) does ... A: It sounds as if the relay or fan/limit ( I can't tell which from the model # you gave) that is ... | |
| Seeking Unbiased A/C Inspection | 10/27/2011 |
| Q: I have had three different A/C companies find three different leaks responsible for my Freon leaking ... A: I am not aware of any companies that do the inspection that you want done which also don't sell and ... | |
| gas furnace blower reversing by itself | 10/26/2011 |
| Q: I’ve noticed that my York gas furnace does not heat up the house properly. At first, I thought that ... A: The problem is most likely with the capacitor, but there is a chance that it could be the motor. You ... | |
| Ductless indoor unit blower noise | 10/10/2011 |
| Q: I bought our ductless Friedrich MW18C3F 3 years ago to cool our living room here in Minnesota. It ... A: I am sorry not to have been more helpful in solving your problem. Luffing (motor speed that is ... | |
| Hot Water Baseboard Heating Anomaly | 10/9/2011 |
| Q: I own a large 2-story home in upstate New York and heat it with hot-water baseboard heat. I have a ... A: There are a few possibilities for your observed problem and things that you can check to try to ... | |
| What is wrong with my central A/C? | 8/17/2011 |
| Q: Just a quick description of my problem: Brand new Goodman 3 ton unit with Rheem coil installed 3 ... A: You need to get another company to work on your system because obviously the company that you have ... | |
| What is wrong with my central A/C? | 8/17/2011 |
| Q: Just a quick description of my problem: Brand new Goodman 3 ton unit with Rheem coil installed 3 ... A: If the compressor is not starting, then the problem is with the compressor or its accessories. The ... | |
| What is wrong with my central A/C? | 8/17/2011 |
| Q: Just a quick description of my problem: Brand new Goodman 3 ton unit with Rheem coil installed 3 ... A: It seems as though your compressor problems may have started with the leak. If a compressor runs ... | |
| Furnace Humidifier Installation Questions | 8/12/2011 |
| Q: "Furnace Humidifier Installation Questions: PROBLEM: I am trying to hook up a "Herrmidifier Mister ... A: The 2 connections that you are seeing labeled 120v HUM are meant to power the primary side(120v) of ... | |
| Trane Heat pump | 8/10/2011 |
| Q: We have a 4y/o Trane heat pump model #2TWB3036A1000AA. We had it checked due to the fact that the ... A: Trane units normally have a "Parts List" in an envelope inside the control panel of the unit. This ... | |
| tons of air conditioning | 8/10/2011 |
| Q: how can you tell the tons of Air Conditioning by the model number. Ray A: Some brands are easy to tell from the model number and some are difficult or impossible to tell from ... | |
| unit runs all night | 8/2/2011 |
| Q: .i have two new payne units here at home. about 7pm i push the one in the kitchen area up to 88 so ... A: What you are experiencing is due to several factors. The heat in your house consists of 2 types of ... | |
| Window A/C Air Stinks of Mold | 7/31/2011 |
| Q: My window a/c air that is being blown in has made my entire downstairs stink of mold. The closer ... A: It may need be taken out of the window and thoroughly cleaned. Many companies do not work on window ... | |
| york heat pump not cooling | 7/28/2011 |
| Q: unit is running but not cooling. air flow seems good. not freezing up. ? ANSWER: It could be a ... A: Without leak checking the system it is hard to say what is going on. Yes, you could have multiple ... | |
| Bryant Steam Boiler (Res) | 7/27/2011 |
| Q: Norval, I have a Bryant Tubular Steam Boiler Model 8-4, Serial #45365. It is working fine and very ... A: Sorry, I can't really tell much from the model/sn. One way to try to date if there are any original ... | |
| AC condenser | 7/22/2011 |
| Q: Would it help any hosing my AC condenser down for a few minutes when its 96 degrees outside???? If I ... A: Ideally if your system is clean and sized correctly it should work fine with outside air ... | |
| condensation | 7/22/2011 |
| Q: recently replaced the coil on a 4 yr old bryant heating & cooling system model352AAV & 123A/124A due ... A: Basically the same answer as before, but I would not expect the supply ductwork leading away from ... | |
| a/c problem | 7/21/2011 |
| Q: my 2.5 ton a/c has been running for 3 days straight now. it is in the 90's outside and very humid. ... A: You may or may not have a problem with your system. The more humid it is the harder it is for the ... | |
| condensation | 7/20/2011 |
| Q: recently replaced the coil on a 4 yr old bryant heating & cooling system model352AAV & 123A/124A due ... A: Since it is ruining the ceiling, I assume that the unit is in the unconditioned attic. If the coil ... | |
| repair or replace AC and where to start | 7/20/2011 |
| Q: Our Furnace is 5 yrs old Ruud and AC is 22 yr (I think) old Heil. The AC unit was running fine for ... A: Since it seems like the contractor that you had out for the quote took all the data needed for a ... | |
| Tempstar unit repair | 7/17/2011 |
| Q: I have a Tempstar Heat Pump which stopped cooling. Indoor blower and outside fan still work. ... A: I really have no idea of cost on a replacement compressor if it is available. It might buy you some ... | |
| Tempstar unit repair | 7/17/2011 |
| Q: I have a Tempstar Heat Pump which stopped cooling. Indoor blower and outside fan still work. ... A: Were the connections burnt off at the compressor itself or the contactor/capacitor? Was the ... | |
| a/c dripping water | 7/12/2011 |
| Q: I have my a/c in my attic. The other day I noticed a water stain on the ceiling next to a flush ... A: Shutting off supply vents can cause the system to ice up which in turn can cause water to go where ... | |
| Leak? | 7/11/2011 |
| Q: We have a Trane xe1000 that is about 11 years old. This weekend it stopped blowing cold air. We ... A: A system that has no freon left in it is not a PROBABLE leak, it is a leak(and a very large one at ... | |
| air conditioner motor | 7/9/2011 |
| Q: replacing air conditioner motor my old one has 3 wires and the replacement one has 4 wires old has ... A: I believe that the old motor was a 230 volt 3 wire motor. The black and yellow wires were the 230 ... | |
| thermol zone cond. unit | 7/8/2011 |
| Q: I live in baltimore maryland and was looking to replace my central air conditioner and furnace units ... A: I'm sorry, but I am not at all familiar with Thermalzone equipment. I did take a look at their ... | |
| Trane Gas Pack | 7/7/2011 |
| Q: My wife and I are looking for a home to buy in our area, and had 2 different one's inspected. My ... A: It looks like there is rust on the heat exchanger faceplate and this has been caused by a ... | |
| a/c drain | 7/7/2011 |
| Q: having a problem with my air handler.The primary drain is not clogged but all the water is going ... A: Hopefully you put the vent on the downstream side of the trap because if it is on the upstream side ... | |
| A/C Problem | 7/6/2011 |
| Q: The thermostat turns on and it sounds like the A/C fan goes on but when you go outside to the unit; ... A: Some of the possibilities include a blown fuse in the condensing unit disconnect,open low voltage ... | |
| Heat Pump Cooling | 7/4/2011 |
| Q: I have a CARRIER model 25HBR heat pump with a CARRIER FC4DN coil unit installed in the attic of my ... A: Without being able to take readings and measurements when the system is running at a high outdoor ... | |
| a/c only blowing cool | 7/3/2011 |
| Q: a/c unit is brand new but only blows cool and not very hard. What could be problem? A: It could be any number of problems or multiple problems. Without the ability to take readings and ... | |
| hvac condenser not working | 7/3/2011 |
| Q: I shot a video of the problem I’m having. • http://www.youtube.com/watch?v=rUsOS--lsGA Replaced ... A: It's a little difficult to see clearly in your video. The part where you see the spark is the ... | |
| HVAC burning smell when running AC | 6/28/2011 |
| Q: First let me thank you for previous help!! Now... My sister has an older model TRANE - Model ... A: An aftermarket capacitor is perfectly ok as long as it has the correct microfarad and voltage rating ... | |
| Crayon oder from HVAC | 6/26/2011 |
| Q: I have 3 Unico 2 year old HVAC systems w/ exterior Bryant AC units that use Puron 410A. I have a ... A: There should be nothing colored inside of the system unless a dye was added for leak detection. Have ... | |
| RUUD location | 6/21/2011 |
| Q: I had a RUUD electric heater installed 2 winters ago. It was put under my overhang in the back of ... A: Since electric heat furnaces are normally installed inside the house, I have to assume that you are ... | |
| Ceiling airvents | 5/28/2011 |
| Q: I live in an old 1850's farm house that we recently renovated. During the renovation process we ... A: Many ceiling registers that are available that distribute the air radially from the register. They ... | |
| upgrading a Siegler heating system | 5/28/2011 |
| Q: .. I'm considering purchasing a home that currently is heated with a Siegler heating system. I ... A: You need to contact several HVAC contractors in your area to get estimates for the Heat/Ductwork and ... | |
| Home warranty Scam???????? | 5/27/2011 |
| Q: I have a 6 year old Ryan manufactured home and recently had an issue with my upstairs air ... A: You haven't mentioned what your issue was or what the code violation was either. Having worked with ... | |
| Replacement of Evap Coil | 5/25/2011 |
| Q: I have a 2 ton Carrier, approximately 15 years old in Georgia. I need a new 2 ton evap coil, ... A: I am not sure why you need to pay a disposal fee for the old evap. coil as you could sell it for ... | |
| outside central air unit | 5/23/2011 |
| Q: My outside central air unit comes on for 10 seconds, then stops for 5 seconds, then back on for 10 ... A: Depending on age and safeties included in the unit this may be caused by cycling on either the low ... | |
| Outside a/c unit | 5/23/2011 |
| Q: I have never noticed this before, but today I was outside and noticed a small trickle of water ... A: Yes it is normal. During hot /humid weather the temperature of the low pressure side (the insulated ... | |
| One or Two Furnances | 5/21/2011 |
| Q: There was aQuestion I will be changing out my furnaces. I live in a cold climate in a 40 year old ... A: I would also stick with the 2 separate furnaces. Try to get the highest efficiency unit(s) that you ... | |
| Goodman VS Ruud | 5/18/2011 |
| Q: I'm a single woman, looking for advise on the expensive purchase of replacing my outside rooftop ... A: You haven't mentioned the prices for either unit. If they are roughly the same, the 16 seer 2 stage ... | |
| window ac | 5/16/2011 |
| Q: I have a Samsung window unit that has no drain. As a result the motor mount rusted thru and jammed ... A: Many window units were designed so that the capillary tube( metering device ) was immersed in the ... | |
| RUDD ac/heat pump capacitors | 4/22/2011 |
| Q: I am confused baout capacitors. Two capacitors are next to one another on OUTSIDE of the unit. The ... A: The run capacitor should discharge within 5-10 seconds after you shut off the power to the unit. All ... | |
| RUDD ac/heat pump capacitors | 4/18/2011 |
| Q: I am confused baout capacitors. Two capacitors are next to one another on OUTSIDE of the unit. The ... A: Run capacitors are always in the circuit and don't need to be discharged as they will bleed off when ... | |
| RUDD ac/heat pump capacitors | 4/15/2011 |
| Q: I am confused baout capacitors. Two capacitors are next to one another on OUTSIDE of the unit. The ... A: Will need to find my copeland handbook to tell the microfarads for that compressor. I will try to do ... | |
| 14 years old air conditioner not blow out cool air | 4/10/2011 |
| Q: Model:REBA-17J07SEDAI; 2.5 tons, 10 seer I lived in Miami and because of the weather here, I have ... A: If your outdoor unit has a leak that cannot be repaired you will need to replace the AC system with ... | |
| Heat Pump Problem? | 3/30/2011 |
| Q: I think I may have an issue with my heat pump. I live in northern VA, just outside of DC. When I ... A: The only difference between heat and AC on a heat pump is the operation of the reversing valve. If ... | |
| Heat Pump Problem? | 3/29/2011 |
| Q: I think I may have an issue with my heat pump. I live in northern VA, just outside of DC. When I ... A: Unless it is very cold outside the outdoor unit on a heat pump should be running in the heating mode ... | |
| Replacement Heat Pump | 3/25/2011 |
| Q: 3 years in a new home w/ 5 ton Rheem heat pump set for 2 zones. Year 1 the compressor fried. ... A: I would be a little hesitant about letting a company that has lost 2 compressors in three years do ... | |
| payne serial and model numbers | 3/24/2011 |
| Q: .this is weird. i had 2 brand new payne central units put in a month or so ago. both are 2 ton. when ... A: If the flue pipe for the furnace is metal and vented to a chimney, the furnace is 80% plus ... | |
| payne serial and model numbers | 3/23/2011 |
| Q: .this is weird. i had 2 brand new payne central units put in a month or so ago. both are 2 ton. when ... A: The SEER rating is only for the airconditioning not the furnace. The furnace would have an ... | |
| Heat Pump | 3/20/2011 |
| Q: In your opinion do you think placing a air source heat pump condenser in a basement would work, ... A: A heat pump basically transfers heat. It removes heat from the outdoor air (virtually limitless) and ... | |
| gas like odor when furnace kicks on | 3/19/2011 |
| Q: I live in the midwest and have a 3 year old gas furnace. About a month or two into the heating ... A: You haven't mentioned whether the furnace is 80% or 90% efficient or given a model/serial number. CO ... | |
| Ruud Deluxe 80 clicking sounds | 3/14/2011 |
| Q: Furnace has run well for years, but recently started making clicking sounds. Replaced the flame ... A: It could be a number of things. It depends on if the main burners are dropping out on high ... | |
| Payne PG8JAA036070AAJA | 3/8/2011 |
| Q: I am trying to determine why my 7 year old Payne PG8JAA036070AAJA heater is not working. I tried ... A: A 3-3 code would indicate an open limit or rollout switch and and the blower would run until the ... | |
| Furnace Noise | 3/7/2011 |
| Q: About two days ago, the blower on my ThermoPride hot air oil fired furnace started making a ... A: If you have a belt driven blower on the furnace the noise can be from the motor bearings, belt or ... | |
| gas furnace | 3/5/2011 |
| Q: I am thinking of replacing a gas furnace,what make or model should I purchase?This is for a three ... A: You have missed the large (up to $1500) tax credits for 95%+ furnaces which were greatly reduced as ... | |
| Bryant, Carrier, or Trane | 3/4/2011 |
| Q: 2000 sq ft 2-story house in Richmond VA. Currently have gas HW radiators and central AC upstairs ... A: Carrier and Bryant are the same units with a different names on them. As a personal preference I ... | |
| Electric Heat Pump | 2/26/2011 |
| Q: I have an electric heat pump HVAC unit and the outside condenser will freeze. The inside and the ... A: It sounds like your defrost cycle is not working. This can be caused by a number of things. When a ... | |
| Water runoff from Heat Pump | 2/25/2011 |
| Q: We live in Phoenix. (Low humidity). However, water frequently pours off our roof in the winter when ... A: I lived and worked in Scottsdale for 5 years. During the winter in the heating mode heat pumps ... | |
| Gas-Fired Warm Air Furnace operation | 2/21/2011 |
| Q: Have had a new Goodman 95% efficient natural gas central air furnace installed in garage for a ... A: 90% plus furnaces drain water in the winter because they remove so much heat from the byproducts of ... | |
| Furnace cutting in and out | 2/20/2011 |
| Q: Hey there, We have a old style natural draft furnace(Natural gas) (about 10 years old)- it's been ... A: It sounds like you might be short cycling on the main limit(overheating). If the blower motor is ... | |
| Blower doesn't shut off | 2/16/2011 |
| Q: I have a Lennox A/C - Nat. gas Heater (Roof top) Unit that the (inside) blower motor runs ... A: It would seem that either the blower is being powered with no 24 volt control input or you have a 24 ... | |
| ac | 2/15/2011 |
| Q: i have a new 3 ton in a new 1900 sq ft house , 4 bedrooms. i think the system is too small, i had a ... A: Again, the only correct process to size the system is to do a Manual J heat load calculation. If you ... | |
| ac | 2/14/2011 |
| Q: i have a new 3 ton in a new 1900 sq ft house , 4 bedrooms. i think the system is too small, i had a ... A: A 3 ton unit for your size house may be adequate for northern parts of the US, but inadequate for ... | |
| outside electrical | 2/8/2011 |
| Q: ruud UPNE- 036JBZ 2 years old (outside unit) Ruud Acheiver air handler 1 year old inside unit... ... A: You might be locked out on an outdoor thermostat, have a control/wiring problem or have a problem ... | |
| heat strips in air handler with heat pump | 2/7/2011 |
| Q: It appears that the heat strips are energizing every time the heat pump comes on to satisfy a call ... A: This means that the heat pump by itself cannot keep up with the heat loss from the house and second ... | |
| Heat Pump | 2/4/2011 |
| Q: I have a heat pump and it seems to run continuously. The outside temperature is usually in the mid ... A: A heat pump puts out the highest quantity of heat at warmer outdoor temperatures. As the outdoor ... | |
| Freedom 80, mind of it's own | 2/4/2011 |
| Q: I have an American standard single stage, Freedom 80 propane furnace. I have had the unit turned off ... A: You might have had an ignition failure and lockout. By turning the furnace off at the switch you ... | |
| whiterogers50A50-405 w/new thermst white rodgers 1F78 | 2/3/2011 |
| Q: White-Rogers 50A50-405[gas unit] Code running-double flash/system lockout/no flame. Calls for ... A: The RC/RH jumper is only removed for older systems that had a separate transformer for both heating ... | |
| mech.damage due to placement of LL filter dryer. | 1/28/2011 |
| Q: Customer has had compressor replaced twice.Unit aprox.10yr old.Last compressor installed 09.Found ... A: The high pressure pulsing in the discharge line can cause the desiccant in the filter drier to break ... | |
| Humidifier | 1/26/2011 |
| Q: I have an 8 year old Aprilaire 768 furnace humidifier. I recently have heard a fairly loud noise ... A: It is difficult to tell exactly what is wrong if you don't know what is causing the noise. Some ... | |
| Bryant Air Handler tripping breaker | 1/25/2011 |
| Q: The air handler is tripping the 2 pole 40 amp breaker. It has happened 2 or 3 times in the last 24 ... A: With 15KW of heat you may have 2 circuits on the air handler. One would be for 10KW of the heat and ... | |
| Coleman Furnace Troubleshooting | 1/22/2011 |
| Q: I have a Honeywell S891OU Universal Hot Surface Ignition Module on my Coleman (Model DGAT070BDA) ... A: It is difficult to tell what the furnace is shutting down on without being on site( temperature, ... | |
| AIR CONDITIONING | 1/20/2011 |
| Q: THE OTHER DAY, MY WIFE HAD THE AC ON AND I NOTICED THE AIR COMING OUT OF THE VENTS WAS NOT COLD. I ... A: Check in the attic to see if the secondary safety drain pan has water in it and has activated the ... | |
| Compatibility of 2010 R-410A heat pump condenser with 2002 R-22 heat pump air handler | 1/18/2011 |
| Q: In June 2010, my compressor failed on my original 2002 Carrier 10 SEER R-22 split system heat pump. ... A: The only correct answer on compatibility should come from the Carrier engineering/design department, ... | |
| Condensate trap malfunction | 12/19/2010 |
| Q: I have an American Standard Freedom 90 Comfort 2 stage condensing gas furnace. I is a vertical ... A: The plastic condensate trap should be held in place with 1 or 2 screws depending on the age of the ... | |
| High Pitch Tone from Heating and A/C Unit on Roof | 12/19/2010 |
| Q: I have a unit on the roof that is only 6 years old. There is a high pitch loud tone coming from the ... A: Without knowing where in the unit the noise is coming from it is difficult to tell. You might have ... | |
| gas pack furnace electric breaker flips | 12/18/2010 |
| Q: this week i had to go outside and reset the breaker appox. every 2 or 3 days. bad weather tenn. ... A: If the unit trips the breaker, it could be anything from a blower motor problem to a wiring/poor ... | |
| Intake blowing cold air | 12/13/2010 |
| Q: I have an intake vent about 30"x24" that is on the wall between two bedrooms. When the heater (gas ... A: You can't block off the return to the unit or it will cause problems and/or damage to the unit. One ... | |
| heater blows, then stops while unit continues to run. | 12/10/2010 |
| Q: I am having an issue with running the heat in my house. I can set the thermostat and the unit will ... A: More information about your system would be helpful. If you have a split system, you may be having a ... | |
| Gas furnace | 12/7/2010 |
| Q: Brookpark Ohio I had a American Standard furnace and A C unit installed 2003, with Aprilaire ... A: The 2 types of ignitors in common use in Trane/American Standard are silicon carbide and silicon ... | |
| Gas furnace | 12/6/2010 |
| Q: Brookpark Ohio I had a American Standard furnace and A C unit installed 2003, with Aprilaire ... A: If by taking the front cover off you mean the blower door, then you are breaking the power circuit ... | |
| gas furnace noise | 12/4/2010 |
| Q: I am getting a "clunking" noise when my gas furnace shuts itself off.(There is only one clunk after ... A: Excessive static pressure is an indication of restricted airflow which can damage your furnace ... | |
| gas furnace noise | 12/4/2010 |
| Q: I am getting a "clunking" noise when my gas furnace shuts itself off.(There is only one clunk after ... A: It is possible that a dirty filter is causing the noise you hear. Observation of the duct when the ... | |
| Rust smell? | 12/3/2010 |
| Q: I apologize for ahead of time for not knowing the hvac lingo, but I have a spilt unit heat pump. One ... A: That part is the indoor coil and in the summer when the AC is removing humidity from the air it is ... | |
| Rust smell? | 12/3/2010 |
| Q: I apologize for ahead of time for not knowing the hvac lingo, but I have a spilt unit heat pump. One ... A: It could be from the indoor unit. If you have not had it checked regularly you might have a water ... | |
| Ruud Deluxe 90 furnace | 11/30/2010 |
| Q: My furnace is not working properly. It does not blow hot air and does not seem to work at all in the ... A: The fuse for the power to the furnace would be in your main fuse/circuit breaker panel. There may ... | |
| Boiler lifespan | 11/29/2010 |
| Q: I have a boiler (gas, hot water heat manufactured by HB Smith or AO Smith?) that was installed when ... A: Boilers tend to last longer than gas fired furnaces and yours may still be in good working ... | |
| Baseboard Thermostat | 11/23/2010 |
| Q: I heat primarily with a wood stove. However,I have 3 bedrooms in the back of the house which need ... A: You would need a transformer to supply 24 volts (hot) to the thermostat R(h) terminal and then go ... | |
| thermostat replacement | 11/22/2010 |
| Q: Mr Trimborn, I wanted to replace my thermostat on a Carrier heat pump/AC unit that is about 15 ... A: Sometimes since the indoor motor shares the same voltage as the outdoor unit (230 volts) they will ... | |
| Blower motor doesn't start | 11/19/2010 |
| Q: Nordyne G6RA multi speed furnace. ignites fine but blower does not start up. heat exchanger box get ... A: OK, you don't have a multi-speed motor then but instead have a continuously variable speed DC motor. ... | |
| luxaire heat pump | 11/17/2010 |
| Q: i live in mississippi and jan.2007 bought luxaire air-to-air heat pump model EABD-F048SB & ... A: I can see why you are very frustrated with this problem. I am not really familiar with the weather ... | |
| igniter wont light | 11/7/2010 |
| Q: .i have a york diamond 80 furnace. when you turn it on, one igniter lights and the other one does ... A: You should only have 1 ignitor in the furnace. The part in the same position at the opposite side of ... | |
| 17 year old heating and air unit. | 10/30/2010 |
| Q: I have a question regarding a sales approach of a heating and air co. My unit was 17 years old and I ... A: If a service technician finds any crack or breach in the heat exchanger it is his responsibility to ... | |
| Air Conditioner | 10/30/2010 |
| Q: We hear a surge of electricity running through the wires from the electical box to the thermostat ... A: It is difficult to tell exactly what you are hearing when the AC starts up. If all the parts of the ... | |
| furnace/air cleaner | 10/29/2010 |
| Q: My older furnace has an electronic air cleaner attached to it. It has two coiled units that slide in ... A: Depending on the brand of electronic air cleaner, you may have shorted either the power-pack or the ... | |
| HVAC blows transformer | 10/29/2010 |
| Q: I have a 9 year old International Comfort Products Corp. HVAC package unit.I live in middle ... A: It sounds more like an intermittent short/ground than an amp draw problem with the heat sequencers. ... | |
| cracked excahnger on lennox model g26 | 10/28/2010 |
| Q: i have been told by a local contracotr that well the exchanger is covered under warranty it will ... A: Replacing a heat exchanger is normally a 2 to 4 hr. job. Sometimes there is also a charge to the ... | |
| Gas furnace | 10/26/2010 |
| Q: I replaced the draft inducer on a Bryant Plus 90 furnace and now the furnace will not light. The ... A: How old is the furnace? If newer is the LED in the blower compartment flashing a fault code(fault ... | |
| New HE Furnace Installation | 10/25/2010 |
| Q: This year I had an new HE Rheem 95% forced-air nat gas furnace and A/C installed in my home. Here ... A: A lot depends on the furnace sequence of operation and I am not that familiar with the 95% Rheem ... | |
| New HE Furnace Installation | 10/24/2010 |
| Q: This year I had an new HE Rheem 95% forced-air nat gas furnace and A/C installed in my home. Here ... A: As long as the ductwork will allow a sufficient amount of airflow for the larger furnace, it will ... | |
| airease furnace | 10/21/2010 |
| Q: the burners come on and it runs for about a minute and a half and then the burners shut off, it ... A: It depends on how old the furnace is(style of ignition) and whether the furnace has been cleaned ... | |
| Heil Condensing Upflow gas furnace | 10/18/2010 |
| Q: My Heil 7000 was installed in 1991 and has been very dependable. The problem is that when the heat ... A: I can't really be sure without being there to troubleshoot when the problem is happening, but you ... | |
| ICP Furnace Blower Speed | 10/15/2010 |
| Q: I have an Inter-City Products Model NULK075DG07 furnace with a DD10-9A blower. I just added a ... A: I am not sure if it is possible from the circuit board itself, but you could wire "G" from the ... | |
| Trane Weathertron Heat Pump | 10/14/2010 |
| Q: I live in MD. I used my air throughout the summer, depending on weather I have turned it on and off ... A: You have me a little stumped too. If the AC works, the only difference between the AC and Heat in a ... | |
| central air fan won't shut off | 10/10/2010 |
| Q: I have an old Westinghouse rooftop unit. Both the heat and the a/c still work fine and shut off ... A: Without knowing more about the unit it is difficult to tell. If it is gas heat and more than 20-25 ... | |
| AC Return Air Filter | 10/7/2010 |
| Q: Mr. Norval Trimborn Sir: I have a central AC system using a floor mounted return air grill which has ... A: Yes, there are filter racks that can be installed in the return dust outside the air handler or ... | |
| Trane XL 90 problem | 9/22/2010 |
| Q: I have a 6 year old trane xl 90 that just had a inducer fan upgrade that included various sensors ... A: It would not be gas pressure because it lights when you hold a flame to it and the pressure to all ... | |
| gas forced hot air furnace rattle | 8/31/2010 |
| Q: I own a 22 year old Synder General/Arcoaire gas forced hot air furnace with central A/C. During the ... A: It sounds as if the noise has something to do with the heating cycle. It may be difficult to ... | |
| delta t | 8/30/2010 |
| Q: What is an idea delta t? Not sure the exact temperature outside, my guest is 82. My return is ... A: A 24 degree delta T is high and usually indicative of inadequate airflow(dirty filter, blower ... | |
| Fan Limit Control... | 8/27/2010 |
| Q: I have to manually turn on my fan limit control to get the blower to come on each time I turn on my ... A: You may have damaged your fan-limit by manually turning it. It is only meant to turn the fan on in ... | |
| Variable HVAC system will not go into any of the stages | 8/26/2010 |
| Q: I had a brand new system installed. Specs are as follows: > Goodman Furnace GMVC950905DX > A/C ... A: I am not familiar with those model numbers or dip switch settings. Much more helpful information ... | |
| Problems with A/C | 8/23/2010 |
| Q: I had a Trane 14xli installed 8 years ago. When they installed it they were suppose to replace the ... A: I they have to put refrigerant in the system yearly, then there is obviously a leak. They should ... | |
| central air conditioner brand recommendation | 8/23/2010 |
| Q: We have a central air-conditioner that was put in in 1993 when we added a great room. We have been ... A: A 17 yr. old system will tend to nickle and dime you to death with not a lot of expected life left ... | |
| Meaning of AC high pressure? | 8/23/2010 |
| Q: I have been studying HVAC as a hobby. Is my high-side pressure too high? If yes, any suggestions? I ... A: I am having a little trouble with your readings (they seem to be off somewhat), but it seems as if ... | |
| Trane air conditioner noise | 8/20/2010 |
| Q: We have a 4 or 5 year old Trane that is wonderul when it comes to cooling. My problem is it makes ... A: Oil canning is when the blower tries to move air through the system and causes the ductwork on the ... | |
| Residential AC failure | 8/18/2010 |
| Q: Good Afternoon, First off, I'd like to thank you folks for the advice that you've provided me in ... A: Try ohming out the compressor at the compressor terminals with the power disconnected. The ohms ... | |
| HVAC | 8/18/2010 |
| Q: Didn't appreciate your last response. You DIDN'T answer my last question or the first one either ... A: You don't have to be rude Ernie. Your first photo didn't show anything that was of much use and I ... | |
| Residential AC failure | 8/18/2010 |
| Q: Good Afternoon, First off, I'd like to thank you folks for the advice that you've provided me in ... A: I think that you are telling me that you can get the outdoor fan motor to run, but not the ... | |
| Central AC cool, not cold | 8/11/2010 |
| Q: My 10 year old NORDYNE central AC is running full tilt, not shutting off and still cannot cool to ... A: Can't really tell enough about how the system is running to hazard a guess without more information. ... | |
| Blower motor | 8/11/2010 |
| Q: My eletricity went out which led to my ac stopping when it came back on it seem to run fine and then ... A: You could pull the front cover on the furnace and see if the LED light behind the small round ... | |
| compressor fan shutting off | 8/8/2010 |
| Q: It's the hottest day of the year and this unit is very old, but has been cooling very effectively ... A: Yes, it should be sucking air in through the sides and blowing it out the top. Some motors are ... | |
| a/c on, moist in house, cold but not cold air | 8/6/2010 |
| Q: Im stumped, turned a/c on this year and it was a little warm, added a tiny bit of freon and it ... A: It is difficult to tell exactly how a system is running without the operating parameters of the ... | |
| Old Lennox Central Air Help | 8/2/2010 |
| Q: I have a very old (I'm not sure how old, at least 20 years) Lennox central AC (Model No. C1-41-1FF). ... A: The lines near the inside drain going to the evaporator coil should not be icing. Cleaning out the ... | |
| HVAC liquid line is hot and AC won't cool | 7/31/2010 |
| Q: Earlier in the year, my central air unit wouldn't heat and I was told that it the thermostat needed ... A: If the liquid line is hot(and you don't live in Phoenix) there is a good chance that you have a ... | |
| Return Air Vent placement | 7/29/2010 |
| Q: Our home was built in 1910, we recently had central air with forced air placed in the home for the ... A: A return on the floor is not ideal for AC. If your supplies are also at floor level you will tend to ... | |
| trane ac unit xr11 | 7/29/2010 |
| Q: I have a 6 year old ac unit with a 10yr warranty parts/labor and compressor and i was told the ... A: Yes you would have to recover the refrigerant from the system to replace the liquid line service ... | |
| AC compressor line freezing | 7/29/2010 |
| Q: A few days ago we noticed the AC in our house stopped blowing out of the vents. The outside unit was ... A: An AC system usually ices up from either loss of refrigerant or inadequate airflow. If the filter ... | |
| AC trips breaker, when reset high pressure line gets very hot | 7/28/2010 |
| Q: I'm in the Denver, Colorado area. I have a Heil High Efficiency 5000 AC system on my Heil gas ... A: It is most likely that you have a problem with the condenser fan motor stopping( weak run capacitor ... | |
| hvac system | 7/28/2010 |
| Q: We are getting bids on an electric hvac system. we live in southeast tennessee with hot, humid ... A: Two separate systems for a two story house is always the best way to go. Be careful with online ... | |
| replacement of central air blower motor | 7/27/2010 |
| Q: I have an old central air unit Carrier model 58GC125-2A and the blower motor seized up and I need to ... A: Remove the blower door. Remove the control panel in front of the blower assembly. Remove the screws ... | |
| Excessive condensation in Goodman AC | 7/26/2010 |
| Q: Lately we have been getting excessive condensation from our AC unit. The condensate pan has a good ... A: If the airhandler for the AC is in the attic, normally the drain line from the secondary safety pan ... | |
| Repair or replace flood damaged furnace | 7/20/2010 |
| Q: We have a 9 year old 93%, 2 stage gas Lennox that has worked fine for us. Last week, while we were ... A: The increase in efficiency doesn't net you a lot, but the tax credit will probably not be available ... | |
| MINI DUCT AC | 7/20/2010 |
| Q: I have three bids for a mini duct AC installation in my house. Each contractor uses a different ... A: I am not familiar with Velocity and I haven't dealt with Unico or Space Pak recently. I don't know ... | |
| air conditioning | 7/20/2010 |
| Q: I have a 2 ton package unit.I cant get the liquid line to heat up. I have recovered,vac,recharged, ... A: You're not giving me much to work with. Make, mod#, ser. #, type of metering device, suction and ... | |
| Repairman Question | 7/19/2010 |
| Q: We live in Kentucky. After a few weeks of our thermostat reading 84 by the end of the day (after ... A: Normally there is no green fluid in the system. The technician may have added a dye when he put the ... | |
| vents | 7/6/2010 |
| Q: Ive heard two different stories.Will the upstairs cool better if you close some downstair vents? ... A: Normally you should leave all supply registers open. You should have 400 CFM of airflow per ton of ... | |
| HVAC Dripping during AC cooling | 7/5/2010 |
| Q: I run a small fitness club and when I built it out I decided to keep the rafters open, 25' to the ... A: The side that is not dripping is probably the return air. The supply air side can drip like a glass ... | |
| Central Air Transformer | 6/29/2010 |
| Q: I have a central air system, condensor outside running to the gas furnance in the basement. The ... A: It sounds as if you have an intermittent short in the low voltage circuit. The reason that the 120 ... | |
| AC running properly? | 6/29/2010 |
| Q: My Honeywell AC unit doesn't seem to be working properly. It will not retain a temperature. I set ... A: It sound like your system is freezing up( it shouldn't). This could be due to lack of airflow from a ... | |
| heat pump | 6/29/2010 |
| Q: I need to replace an old heat pump, do I have to tear out & replace my copper lines or can they be ... A: If possible it is best to replace the lines. If they are in a cement slab they can be flushed, but ... | |
| York deluxe diamond 80 2 stage furnace/air conditioning unit. | 6/28/2010 |
| Q: I can't get the a/c to kick on. I put my "white-rodgers" digital controller to cool, brought it down ... A: If you have a 2 stage furnace,only part of the air conditioner is inside. In a condo, the other part ... | |
| Over charged? A.C. Problem | 6/27/2010 |
| Q: If I may pick your brain and ask a question that may be stupid to you but cost me $140.68. Last fall ... A: In a closed system with no leaks the total quantity of refrigerant does not change with temperature ... | |
| residential A/C and thermostat | 6/26/2010 |
| Q: I have a 3.5-ton energy efficient Trane A/C and a round digital Honeywell thermostat, both installed ... A: Due to air distribution and thermostat placement the thermostat may be in a cooler part of the house ... | |
| Clunking Noise When Blower Turns Off | 6/22/2010 |
| Q: I hear a clunk when the blower on the AC turns off. Yesterday an installer put in a hinged filter ... A: The noise could be from either the ductwork or the filter (if it is loose in the frame) dropping ... | |
| HVAC cool will not turn off automatically blower and compressor keep going | 6/22/2010 |
| Q: I have a TRANE Compressor XE1000 (model no. TWR048D100A1) and XE90 Control unit. Initial problem was ... A: It sounds like you may have 2 problems with the low voltage wiring. An intermittent short to ground ... | |
| small hole on the inside coil, A/C | 6/16/2010 |
| Q: I have a carrier, 3 ton central air conditioner. It was installed in 2000. It is not working so I an ... A: It depends on exactly where the leak is. If it is on exposed copper tubing it can be repaired. They ... | |
| trouble shooting help | 6/15/2010 |
| Q: Mr. Norval I have a Trane heat pump split system model twp030c100a4. I did not write down the whole ... A: When the start capacitor is blown you need to replace both the relay and the capacitor as the nc ... | |
| Cooling - which option is better? | 6/14/2010 |
| Q: I live in central Virginia. It is freakin' hot here right now, and our house will not cool down. ... A: Did the old system cool the house ok during similar weather before? If yes, then a qualified ... | |
| HVAC Coil Replacement | 6/12/2010 |
| Q: I live in Mount Juliet, Tennessee (Wilson county, if that is important). My split AC unit has ... A: The coil can be replaced by pumping the refrigerant charge into the condensing unit. The EPA rules ... | |
| HVAC / Breaker Issue | 6/11/2010 |
| Q: The breaker to my HVAC system keeps tripping (220V / 30 Amp 2-pole) after a few hours of running, ... A: It is possible that you have a weak run capacitor for the compressor. You may also have a condenser ... | |
| Central Air Units | 6/9/2010 |
| Q: My wife and I have decided to have central air installed this year and we did our home work and got ... A: My brand preference would be for either Trane or Carrier, but that is just a personal preference. ... | |
| a/c blower on delay | 6/8/2010 |
| Q: When my central air kicks in, the outside condensor and the furnace blower both start at the same ... A: An adjustable delay on make relay for the blower circuit would do what you want. If you have a newer ... | |
| air handler drain line what degree of slope? | 6/7/2010 |
| Q: Mr. Trimborn: I have a one year old airhandler [AH]installed horizontally in my attic crawlspace, ... A: Is the evaporator coil on the upstream or downstream side of the blower? If it is on the upstream ... | |
| A/C Compressor Not Working | 6/3/2010 |
| Q: At the end of last summer everything worked fine. When I turned the a/c on a week ago, we weren't ... A: You can check power into the outdoor unit with an inexpensive multimeter from radio shack. It is ... | |
| 3 ton scroll condensors | 6/2/2010 |
| Q: I recently installed two ( 1st floor - second floor) - 3 ton Bryant scroll type condensers with ... A: Part of the "Comfort R" setting is the ramping up of the blower speed for better humidity removal. ... | |
| Troubleshooting a Goodman Integrated Control Mod | 5/29/2010 |
| Q: The fuse on the control module on a Goodman GMT blows almost immediately when replaced in the AC ... A: If this only happens in the A/C mode the most likely cause is a direct short or ground in the low ... | |
| Replace Evaporator Coil | 5/28/2010 |
| Q: I have a four-ton Carrier split system that is almost 20 years old that has been diagnosed with a ... A: Do you mean the coil drain pan when you say drip pan or do you mean a secondary safety pan? A new ... | |
| AC Unit Keeps Running | 5/23/2010 |
| Q: I have a Bryant Electric Heat Pump that is almost 10 years old. 90% or more of its use is for the ... A: It sounds as if you may have more than 1 problem since the A/C overcooling and the blower not ... | |
| central a/c | 5/23/2010 |
| Q: Although we suspect it's a coolant issue, we're considering replacement. At any rate, I don't want ... A: Most major brands are comparable quality wise, but warranties will differ. So most times it comes ... | |
| HVAC not cooling properly | 5/19/2010 |
| Q: I live in a two story house in Houston, with zoned central air. The house is over 25 years old. ... A: If the unit cooled okay before during similar weather, then something has changed. The possibilities ... | |
| Leaking AC system | 5/15/2010 |
| Q: I bought a 4 year old house in FL. The week before I closed on it the outside condenser was stolen ... A: A leak that loses enough refrigerant in 2 hours that the system won't cool has to be a fairly large ... | |
| Refurbished comrpessor? | 5/14/2010 |
| Q: I live in Phoenix. A local company charged me over one thousand dollars to fix my Carrier heat ... A: I would begin to question a company that charged more than $1000.00 to fix your heat pump and it ... | |
| Should I replace now or wait until breakdown | 5/14/2010 |
| Q: My HVAC is a split unit -- 5 ton AC (installed outdoors in 1992) and ~95,000 BTU heater (installed ... A: My area of expertise is in the Service/Repair sector rather than Sales/Install so I can't really ... | |
| Should I replace now or wait until breakdown | 5/13/2010 |
| Q: My HVAC is a split unit -- 5 ton AC (installed outdoors in 1992) and ~95,000 BTU heater (installed ... A: The tax credits may not be around for a long time, so this might be an ideal time to replace your ... | |
| New Central Air Conditioner Features - Are they worth it.? | 5/13/2010 |
| Q: I live in the Atlanta area and I need to replace my two split-AC units (Trane air conditioners + gas ... A: I have had some experience with Trane Clean Effects filters and have found them to be a very good ... | |
| new HVAC install | 4/21/2010 |
| Q: I am nervous about having my new HVAC system installed on a day when there is a 60% chance of rain ... A: The newer oil that is used with R410A is very sensative to moisture and will attract it very easily. ... | |
| New High Efficiency HVAC unit working strangely | 4/20/2010 |
| Q: I just got a new high efficiency HVAC unit installed (4A6H5030E1000A / American Standard 15S R410A ... A: It sounds like you have a problem as the system will not normally run in this manner. It could be ... | |
| Heat Pump | 4/18/2010 |
| Q: Ameristar Heat Pump 5 Years old Model 2A6B0036A1000AB trips circuit breaker. Circuit is good to unit ... A: If you have a multimeter, kill power to the outside unit. In the outside unit, there are three wires ... | |
| adding freon to a central unit | 4/16/2010 |
| Q: I want to check the level and add if needed freon to a 2 1/2 ton central unit.unit is not cooling ... A: The freon needs to be put in the low side as a vapor. The pressures and temperatures will vary with ... | |
| 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: It would seem that the leak might not be in the Evaporator coil. New Evaporator coils come ... | |
| replace lennox 10acb24 | 4/13/2010 |
| Q: How much is a new lennox 10acb24 9p m9210274 to replace (new Dec 98). I have a #4 leak. I had ... A: I am not sure what a #4 leak is?? Have you had the leak pinpointed as being in the condensing unit ... | |
| replace lennox 10acb24 | 4/12/2010 |
| Q: How much is a new lennox 10acb24 9p m9210274 to replace (new Dec 98). I have a #4 leak. I had ... A: If you have a refrigerant leak in the outdoor unit, you no longer have the option to just replace ... | |
| Air only blowing out of some vents | 4/7/2010 |
| Q: At our house we have central air. Our 3 bedrooms blow out some but probably not as good as they ... A: There could be a number of causes for your lack of airflow problem. The first thing to check are the ... | |
| Return Ducts on furnace | 4/7/2010 |
| Q: I have a grill about 6"x14" on the return side of my ductwork close to the plenum, it is a sealed ... A: You might have a dilemma. The grill on the side of the return duct drop was probably put there ... | |
| UV Dye test | 4/7/2010 |
| Q: Our yearly furnace and air guy did a UV dye test on two of our old furnaces (14-15 years old) he ... A: I haven't heard of using UV dye to check a heat exchanger. I would question whether there were any ... | |
| A/C unit cleaning | 3/26/2010 |
| Q: I live in a manufactured home in Florida with a Bryant a/c and heat packaged unit. I was wondering ... A: Fin+Tube coils can be brushed in the same direction as the fins for heavier surface accumulations ... | |
| Transformer | 3/25/2010 |
| Q: A few days ago, my wife and I came downstairs and smelled this burnt electrical smell and realized ... A: It sounds as if you have an intermittent short that is causing the primary winding in the ... | |
| Thermostat will not get power from Heating system | 3/23/2010 |
| Q: I have a lennox G40UHx heating system which "looks" like it is working fine as the red/amber lights ... A: If the thermostat gets power from the furnace without using the batteries, you should check for 24 ... | |
| Problems with Thermostat install | 3/21/2010 |
| Q: I am writing you today to see if you could help me with an electrical problem I am having with ... A: From the old thermostat it looks like you have a heat pump with auxiliary electric heat in the air ... | |
| HVAC Question | 3/19/2010 |
| Q: I have a leak in my 2 yr old Lennox 13 Seer unit A/C / Heat pump system. All the refrigerant is ... A: I don't understand why the tech is recommending replacing both TXV's? Is he claiming that they are ... | |
| pulling blower motor | 3/16/2010 |
| Q: I need to pull my blower motor. the squirrel fan has broken off the fan shaft.side panel looks like ... A: The blower motor is usually removed by taking out 2 to 4 screws at either the front or the front of ... | |
| response to my question | 3/11/2010 |
| Q: You answered: Hard to say. How did you clean the burners? (wire brush & vacuum) There is a small ... A: The crossover scoop inside the burners can be cleaned with a small diameter long screwdriver and ... | |
| new central a/c confusion | 3/11/2010 |
| Q: I just had a contractor give me a quote for a new central a/c, and he told me something ... A: I am not real familiar with Wood/Fuel oil systems, but higher supply temperatures from burning wood ... | |
| new central a/c confusion | 3/10/2010 |
| Q: I just had a contractor give me a quote for a new central a/c, and he told me something ... A: Heat Pump/Electric heat systems have the evaporator coil on the return side, so this is not ... | |
| A/C Compressor Fan Running Backward | 3/9/2010 |
| Q: and thanks for letting me ask: Just had a/c service check, where they replaced the capacitor and ... A: If the fan was running backward before,your system would not have been operating correctly. It is ... | |
| humidistat installation | 3/7/2010 |
| Q: i installed a humidifier on my sons furnace. After completion, it worked perfectly when calling for ... A: Probably the easiest way is to use an Aprilaire # 50 current sensing relay to break one of the 2 ... | |
| Trane operations | 3/4/2010 |
| Q: I live in southern Ohio and we have had an unusually cold winter for this area this year. I just ... A: The lower you set your thermostat(as long as you are comfortable) the more energy you save. This is ... | |
| Single or 2 speed compressor | 3/2/2010 |
| Q: I live in the Sarasota FL area and will be replacing my 42,000 BTU, 10 SEER, 16yr old Train heat ... A: With a variable speed air handler you will have the ability to adjust the airflow per ton of A/C to ... | |
| RE: Furnace | 2/24/2010 |
| Q: I have 2 year old Payne Furnace and recently I have noticed all of a sudden furnace will stop ... A: It is possible that you have a dirty flame sensor. Most newer furnaces have an LED that is visible ... | |
| furnace | 2/23/2010 |
| Q: My furnace just started acting up in comes on light up the gas burners and then goes for 2 to 3 ... A: Normally if the burners only stay lit for a couple seconds, the problem is a dirty flame sensor. It ... | |
| cracked heat exchange | 2/18/2010 |
| Q: I have a dual Gas Heat/Forced Air (air conditioning) unit. Recently, I was told I have a cracked ... A: Yes you can use the A/C even if you have a cracked heat exchanger. Were you shown where the heat ... | |
| Emergency Heating a Room without Electricity | 2/18/2010 |
| Q: Norval. Recently, my family and I made it through a major blizzard during which we lost power and ... A: A natural gas powered emergency generator would be the high end choice. Or you could get a smaller ... | |
| Programmable thermostat wiring | 2/17/2010 |
| Q: I recently purchased a LUX1500E programable thermostat to hook up to my Trane XV90 furnace. The ... A: R on the furnace would go to either RC or RH on the thermostat (keep the jumper in place on the ... | |
| furnace and AC | 2/17/2010 |
| Q: I am in the process of getting a new gas furnace and ac unit. I live in a small town and an older ... A: I am not familiar with new unit costs, but you are in the ballpark for a 95%+ furnace. At present ... | |
| Combine heat pump and propane furnace | 2/14/2010 |
| Q: Our heating system (air exchanger and heat pump) blew out on a cold day this winter. we rushed to ... A: When changing from a heat pump with aux. electric heat to a heat pump with a propane furnace, ... | |
| Heat Pump | 2/12/2010 |
| Q: I need your opinion on something. I recently had a major HVAC provider install a new HVAC system. ... A: If I were you, I would contact the Manufacturers customer service directly and explain your problem ... | |
| outside unit iceing | 2/6/2010 |
| Q: Thursday nite i set the thermostat to 72. Woke up in the morning, the unit was completly in ice. I ... A: I assume that you are talking about a heat pump and that you are new to this system. Heat pumps do ... | |
| heating duct | 2/5/2010 |
| Q: My furnace is 5 years old and is rated at 100,000 BTU. The heat chamber has to be replaced because ... A: Yes it is possible that your heat exchanger failed due to the furnace being oversized and/or ... | |
| Trane XE 900 heat pump failure—electrical? | 2/4/2010 |
| Q: My heat pump abruptly quit without warning (no prior squealing, vibration, etc.). The system worked ... A: The disconnect switch is actually the fused pullout that had the bad fuse(hopefully you replaced it ... | |
| Trane XE 900 heat pump failure—electrical? | 2/4/2010 |
| Q: My heat pump abruptly quit without warning (no prior squealing, vibration, etc.). The system worked ... A: Your problem is with the 240 volt power supply to the outdoor unit. You are only getting 1 hot leg ... | |
| Trane XE 900 heat pump failure—electrical? | 2/3/2010 |
| Q: My heat pump abruptly quit without warning (no prior squealing, vibration, etc.). The system worked ... A: How are you measuring voltage at the contactor terminals? Voltage to ground? With the system on or ... | |
| 98 Carrier Weathermaker gas furnace | 2/3/2010 |
| Q: I just had my burner assemble replaced on my gas furnace hoping it would solve the problem of my ... A: Without a thorough inspection that's a tough one, but this might give you an indication. Turn the ... | |
| Rheem Criterion Furnace, inconsistent | 2/2/2010 |
| Q: 15 yr old Rheem Criterion furnace. Temp in house was 64, but the thermostat was set at 68. Per ... A: It sounds as if you haven't had your furnace cleaned in a while and have a dirty flame sensor. The ... | |
| Central Heating and Air unit | 1/31/2010 |
| Q: I noticed smoke this morning coming from my central unit. I went back and the motor was running but ... A: Hard to say without more information. I assume that when you say the motor was running but the fan ... | |
| Upgrading Compressor | 1/28/2010 |
| Q: I have a 3 ton TRANE XE 1000 unit, 8-10 seer. (Sept.1993) The compressor appears to be bad and an ... A: The SEER rating of a system consists of more than just a newer more efficient compressor. It is ... | |
| Trane heat Pump | 1/27/2010 |
| Q: I am trying to determine if I was given a fair price for the replacement of my 12 year old Trane ... A: You are within what would be considered a normal range for the service. You must realize that a ... | |
| Trane XL1200 defrost (et al) trouble | 1/24/2010 |
| Q: I have troubles with my Trane heat pump: Boston area, mid-winter, 30F and below. I've read articles ... A: Running the system in A/C to defrost is not the same as a defrost cycle. During the defrost cycle ... | |
| Preemptive replacement of inductor motor? | 1/21/2010 |
| Q: I just had a service call on my Bryant 383KAV upflow gas furnace. It was not lighting when there ... A: If the inducer motor bearings a squealing, you should probably go ahead and replace before it fails ... | |
| Package or Split | 1/21/2010 |
| Q: We are looking to replace a 20yr old 2 ton Coleman Heat Pump (split system). The Company we are ... A: They may be trying to eliminate the work of replacing or cleaning up the line set to accept the new ... | |
| Do I need an upgrade? | 1/20/2010 |
| Q: First of all, great site and thanks for the information. I live in Phoenix and want to make sure my ... A: Looks like you have a 4 ton heat pump. If it is still working, I would wait until it needs a major ... | |
| HVAC unit producing water | 1/20/2010 |
| Q: We live in the north Dallas area – one story home (1700 sqft). Our unit is 12 years old (but we ... A: The only place that I can think of that the water may be coming from is the humidifier. Although it ... | |
| Trane XR11 Heat Pump problems | 1/16/2010 |
| Q: John, I'm a Florida renter in a house with a Trane XR-11 heat pump. As near as I can tell the ... A: A lot of warmer areas (Phoenix, Florida etc.) that do not normally get extremely cold weather do not ... | |
| gas furnace/thermostat problem | 1/13/2010 |
| Q: We have a gas fired carrier furnace/central air system at our home and a honeywell programmable ... A: Is the heat working ok? If a safety is open, it will make the fan run constantly. Disconnect the ... | |
| gas leak, carbon monoxide, shared flue | 1/10/2010 |
| Q: I rent. My Landlord does not have our natural gas hot water tank or natural gas heater serviced. The ... A: Yes, you should have a carbon monoxide detector. If the utility closet/apartment is tight, you ... | |
| Ruud Gas Pack Pilot light won't light | 1/9/2010 |
| Q: My 2.5 ton Ruud Gas Pack's pilot doesn't appear to be lit, and therefor there's no flames in the ... A: It sounds as if you might have a standing pilot gas valve and a system with a constant pilot flame. ... | |
| Heat pump problem | 1/8/2010 |
| Q: Purchased an Armstrong 4SHP heat pump last fall primarily for heating purposes,(live in Montreal ... A: If the heat pump is running at 10 degrees F some of the water from the defrost cycle may be freezing ... | |
| Freezing Coils | 1/8/2010 |
| Q: I am sure you will fin this an odd time to be asking about Ice on a coil. However, being an ... A: The indoor coil or the outdoor coil? The outdoor coil of a heat pump will ice up in the heating ... | |
| Two thermostats | 1/7/2010 |
| Q: This question is regarding a rambler with a finished basement (~900 square feet per floor). ... A: It sounds as if your existing thermostat is on the upper level. You could have two separate ... | |
| direction of blower | 12/17/2009 |
| Q: m confused being that original install:air flow goes thru motor into cage then forced upwards towads ... A: It doesn't matter which side of the unit the return connects to. The direction of the cups of the ... | |
| Rheem Outdoor Unit Icing at 47°f and Raining | 12/12/2009 |
| Q: We need your help. We have a Rheem Classic High Efficiency Heat Pump model RPLA-041JAZ manufactured ... A: All heat pumps ice up the outdoor coil in the heating mode. The colder it is outside and the more ... | |
| blinking light on furnace | 12/8/2009 |
| Q: Ameristar furnace. Tried turning it on and it would but cut out after a couple seconds. Realized ... A: I am not familiar with the Ameristar, but newer furnaces all light automatically on a call for heat. ... | |
| WeatherMaker 9200 not heating | 12/8/2009 |
| Q: I have a WeatherMaker 9200 and since yesterday it stopped heating my house. The fan on it works and ... A: Check the window on the blower compartment door to get the fault code being shown by the furnace ... | |
| "clunk" noise when blower turns off | 12/8/2009 |
| Q: When the blower on my central heat/cool turns off(at this point I hear no noise at all) there is a ... A: You may be hearing the sheet metal in the return ductwork "tin canning" (expanding). Turn the fan to ... | |
| Thermostat wiring to a Arcoaire rpj ii | 12/6/2009 |
| Q: I have an Arcoaire RPJ II furnace that I picked up for the garage and was going to hook up the ... A: Between thermostat and furnace, R on furnace to RC(24v hot for cooling) and RH(24v hot for heating) ... | |
| pressure switch | 12/5/2009 |
| Q: My heating unit doesn't blow heat. According to the schematic on the unit, it seems that the ... A: You may have a pressure switch that is sticking or you may have a problem with the inducer or ... | |
| Lennox furnace blower working | 12/2/2009 |
| Q: My furnace Lennox 80MGF3-75A-1 doesn't work. It starts working and then after 2-3 minutes stops ... A: I haven't worked on an 80MGF in a number of years. The last circuit board I replaced on 1 needed to ... | |
| Lennox furnace blower working | 12/1/2009 |
| Q: My furnace Lennox 80MGF3-75A-1 doesn't work. It starts working and then after 2-3 minutes stops ... A: You need an O.E.M.(Original Equipment Manufacturer) replacement control board from Lennox. They do ... | |
| Furnace humidifer | 11/26/2009 |
| Q: We had a gas furnace installed awhile ago and the existing (but older) drum humidifier was not wired ... A: One side of the transformer primary would go to the terminal labeled HUM and the other side of the ... | |
| Furnace humidifer | 11/25/2009 |
| Q: We had a gas furnace installed awhile ago and the existing (but older) drum humidifier was not wired ... A: Most newer furnace circuit boards have a terminal(s) labeled "hum" that supplies either 24v or 120v ... | |
| trane XR12 | 11/24/2009 |
| Q: My unit is drawing power and buzzing loudly although I have shut it off at the breaker. When I power ... A: The outdoor unit gets control voltage from the indoor unit to power the coil of the contactor ... | |
| Question about HVAC tape | 11/21/2009 |
| Q: I had a piece of tape fall of a pipe, or flue, and someone gave me some aluminum tape to replace it. ... A: If the tape came off the flue pipe, it shouldn't have been there in the first place. Correctly ... | |
| Gas valve wont open | 11/18/2009 |
| Q: I have a Trane XE 70 that won't heat. The gas supply is good, and the electronic ignition is coming ... A: Check at the plug that goes into the gas valve with wires attached to it to see if you have 24 volts ... | |
| Heat Pump Pressures | 11/15/2009 |
| Q: How can you determine if the compressor valve is bad or it's the reversing valve that is not ... A: Run the system and disable the condenser fan motor while the system is running(the blower motor in ... | |
| humidistat setting | 11/11/2009 |
| Q: My home always feels damp and warm. Have not had a humidistat for long time and in our new place it ... A: The humidifier is not normally used at the same time as the A/C. The A/C is taking humidity out of ... | |
| Split AC unit with Freon leak | 11/10/2009 |
| Q: I have a split HVAC unit. It is a Goodman 4-ton, 12-seer unit. I recently had the dye test done to ... A: That seems a little early in the systems life to develop a leak. I would ask exactly where the leak ... | |
| Wiring of a Condensate Pump to my System | 11/6/2009 |
| Q: I have a question regarding the wiring of a safety switch of a condensate pump to my residential ... A: If the pump must work both summer and winter you would have to break the "R" wire with the safety ... | |
| Heat will not operate in auto fan mode | 11/5/2009 |
| Q: I have central air with "strip heat" in my home. I replaced my old thermostat with a new ... A: There is normally either a switch(physical) inside the thermostat or a setup option(programming) to ... | |
| Replacing T-Stat | 11/3/2009 |
| Q: I have a White-Rodgers 2 stage heat pump/AC thermostat (#0745T) (cannot set temperature to be ... A: Yes you would need a heat pump capable thermostat. With only 4 wires to the t-stat you are not ... | |
| heater | 11/2/2009 |
| Q: Norval Trimborn, I have a Trane XR 80 forced air furnace about 7 years old. The problem with it ... A: An open high limit can be from a previous cycle of the furnace. This can be due to overheating from ... | |
| damper assembly installation | 10/31/2009 |
| Q: I've been told by an HAC guy that my upstairs zone damper assembly needs to be replaced. The ... A: Although the cost may seem high compared to the "internet" price of the part you must realize that ... | |
| mold on coils | 10/29/2009 |
| Q: I just had my furnace cleaned. My house is only four years old and the service man said and showed ... A: Yes, the moist environment by the A coil can promote the growth of mold and bacteria. The use of UV ... | |
| gas furnace | 10/29/2009 |
| Q: My furnace works very well when it comes on. I have to push the reset button on the furnace sometime ... A: It depends on which reset button you are pushing(vent safety or rollout switch ). In either case you ... | |
| Residential Outside condenser. | 10/28/2009 |
| Q: Our 4 ton consendser went out. We had a service tech come out and he diagnosed that the compressor ... A: The 4 yr. old coil should not need to be replaced. The oil and refrigerant in the system will have ... | |
| payne furnace | 10/24/2009 |
| Q: my furnace is displaying a code 33 signal. this model does not have a flame rollover reset. i am ... A: Carrier 33 fault code is for a limit fault(high limit, rollout etc.). The device with the 2 red ... | |
| Furnace Exhaust | 10/22/2009 |
| Q: Situation:I live in Canada, Southwestern Ontario,. I have a Armstrong HE furnace about 3 years old. ... A: Installation guides normally dictate that the vent termination must be at least 12" above the snow ... | |
| Heating unit not heating | 10/20/2009 |
| Q: I have a ducane unit that is about 4 years old and have had a few problems with it not heating at ... A: It sounds as if you might have a heat pump from your description. What were your previous problems ... | |
| old jenitrol furnace blower | 10/19/2009 |
| Q: My heating works and the blower comes on, but the blower will not shut down when furnace turns off ... A: On older furnaces the blower was turned on by a helical bimetal fan/limit switch in the heat mode. ... | |
| Flame Sensor | 10/19/2009 |
| Q: I have a Snyder General furnace, Model GUI100A016IN, Serial #R910500537. This thing chews through ... A: It isn't normal for a flame sensor to need to be replaced more than once a year or even yearly. They ... | |
| 12 year old furnace broke - fix or replace? | 10/17/2009 |
| Q: our 12 year old ICP/Keepright gas high efficiency furnace broke. The gas valve is defective and the ... A: Although parts can last longer than 10-12 yrs. there is also a good chance that you can have 1 or ... | |
| 12 year old furnace broke - fix or replace? | 10/17/2009 |
| Q: our 12 year old ICP/Keepright gas high efficiency furnace broke. The gas valve is defective and the ... A: You need to know why the 12 yr. old heat exchanger failed. Manufacturing defect (some keepright ... | |
| Upgrade from 92-95% and adding variable valve/speed-Worth it? | 10/16/2009 |
| Q: I currently have TWO 80% 20 year old Tempstar 150K BTU furnaces, one for each floor in my 4600 sq ft ... A: It's a little tough to estimate the portion of your gas bill that is due to the furnaces as they are ... | |
| pilot light | 10/16/2009 |
| Q: I'm trying to light my pilot for the first time this year. My nephew usually does this for me. It ... A: Yes , you need to hold down the red button on the gas valve with the gas valve selector/dial in the ... | |
| Trane A/C | 9/19/2009 |
| Q: I am the president of an association that has a large trane a/c system less than 10 years old. We ... A: Your rooftop package unit is probably going off on the high pressure safety(and holding relay which ... | |
| 3 part question | 9/18/2009 |
| Q: Can a clogged freon line cause the inside unit to leak? If a tech has to add freon when the unit is ... A: A system that runs with the freon low will damage the compressor. There is a good chance that the ... | |
| 4-ton A/c condenser replacement | 9/17/2009 |
| Q: Trimborn: We need to replace our 4-ton residential Lennox A/C condenser. We will be using a ... A: I am partial to both Trane and Carrier as brands. You have a wide range of options with either ... | |
| Air Conditioning & Thermostat | 9/13/2009 |
| Q: My a/c unit does not shut off when the thermostat does. We replaced the square 0 2 pole 60 Amp 240 ... A: It sounds as if you have a heat pump from the number of wires that you have to the thermostat. ... | |
| residential hvac | 9/12/2009 |
| Q: I just replaced the thermostat for my residential hvac system (gas heat, std hvac). I didn't turn ... A: You need to check and see if the condensing unit contactor is pulled in with or without 24 volts to ... | |
| New AC unit not cooling enough | 9/10/2009 |
| Q: I live near Tampa Fl. We puchased a new 3 ton central ac unit for our 1585 sq ft house. When it's ... A: A 3 ton system is a 3 ton system. If operating properly the new unit should cool as well as the old ... | |
| water overflow from evaporator | 9/10/2009 |
| Q: We are having a problem with water over flowing from our carrier a/c unit. We have checked the pipe ... A: When the drain line was plugged up, the water would have filled the evaporator condensate pan and ... | |
| Plenum question | 9/9/2009 |
| Q: Greetings from MN, I recently had a new outside AC unit replaced as well as the coil inside my ... A: Yes, the ugly putty is the norm for sealing the lines as they go through the plenum. It can be done ... | |
| Rheem not blowing cool air | 9/7/2009 |
| Q: My Rheem a/c is approximately 4 1/2 years old. It suddenly stopped blowing cool air and I don't ... A: The handle in the service disconnect (that says on/off) is a pullout to interrupt power(240 volts) ... | |
| Replace A/C evaporator coil or get new unit | 9/5/2009 |
| Q: I have a 15 yr townhouse in CA and the original A/C unit in the attic has apparently been leaking ... A: At 15 yrs. your system would be considered well past middle age. R22 coils are still available until ... | |
| no power - not breaker | 9/5/2009 |
| Q: I have no power to either the inside or outside units when I switch the thermostat. I hear the ... A: Did you check for power with a volt meter? If so you will need to check from the unit(s) back toward ... | |
| A/c fan inside will not come on | 9/5/2009 |
| Q: I have an old whirlpool/Honeywell patched together HVAC unit in closet. bout 15-20 yrs. No computer ... A: You might be trying to use a relay with a 240 volt coil when you should have a relay with a 24 volt ... | |
| Nordyne blower for AC unit | 9/4/2009 |
| Q: and we went up into the attic where the heater blower is. It's a Nordyne model#FG6RA 072C-12A. The ... A: Is the fan motor in the attic unit running? If it is and the system is iced up it is usually due to ... | |
| Freon Leak Detection cost | 8/30/2009 |
| Q: I had regular maintenance scheduled and was told that my freon was low(our unit uses R22 freon). I ... A: Did you at least get a copy of the maintenance agreement that you signed up for? You should be able ... | |
| freezer compressor | 8/29/2009 |
| Q: Norval, I realize this question may be off the beaten track but thought you might know the answer ... A: I haven't done any refrigeration in more than 30 yrs.. A lot depends on what the compressor failure ... | |
| purchasing new furnice | 8/29/2009 |
| Q: Our home is bi-level. 2,400 sq. ft. We are going to be purchasing a new furnice. I say we replace ... A: For information on which furnaces and air conditioners qualify for a tax credit go ... | |
| AC fan motor works intermittently | 8/28/2009 |
| Q: I have a Carrier AC system. The compressor works fine, but the AC fan is working intermittently. ... A: I am assuming that you are talking about the outdoor fan motor. It could be the motor itself or the ... | |
| Heat Pump Layout | 8/27/2009 |
| Q: Norv, Probably dont' get questions like this very often. My a/c exterior condensor fan went out a ... A: In straight AC operation the outside coil rejects heat and the inside coil absorbs heat. In a heat ... | |
| Trane 1000xb not cooling | 8/27/2009 |
| Q: I just bought a house that was built in 2000 we have a trane AC unit out back. My outdoor unit ... A: It sounds like you have a problem with the condenser fan motor. It may be either the motor itself or ... | |
| Basement hating question | 8/27/2009 |
| Q: I have a 6 year old 2,400 sq ft ranch with a basement with 1,400 sq ft finished. I have ceiling ... A: Do you leave the stairway to the basement open or is there no door to the basement stairway? If ... | |
| evaporation coil | 8/25/2009 |
| Q: Our A/C unit is only 4 yrs old and we had to call a service company today to have it checked because ... A: $1157.00 labor to replace an evaporator coil that is under warranty is WAY out of line! You might be ... | |
| copper piping leak? | 8/24/2009 |
| Q: My house was built in 2003 and it had a Carrier (4 ton, 10 seer I believe). The outside unit was ... A: It is not normal to have to replace a six year old system(it should have a much longer lifespan). ... | |
| Bad compressor in o/s condensor unit of heat pump | 8/23/2009 |
| Q: I'm in east central PA. I've had to repl compressors 3 times in the 22 yrs I've had this heat pump. ... A: It sounds as if you may have a shorted/grounded compressor. Bad compressor doesn't mean ... | |
| replacement HVAC system | 8/23/2009 |
| Q: We are replacing our 15 year old split A/C and gas furnace as the E coil is leaking Freon and cannot ... A: Although the information that you have given is fairly thorough it is still difficult to tell ... | |
| Capacitor Blown | 8/22/2009 |
| Q: My a/c recently stopped working, after some investigation i discovered the outside unit fan doesn't ... A: When you say that the capacitor was blown, do you mean that the outside casing of the capacitor was ... | |
| 410A Pressure Temerature Chart Conversions | 8/22/2009 |
| Q: I have a technical question about 410A and pressure temperature charts and i really need some help. ... A: The old ambient plus 30 degrees only applied to old low SEER systems and then was only an ... | |
| Freon Leak Detection cost | 8/20/2009 |
| Q: I had regular maintenance scheduled and was told that my freon was low(our unit uses R22 freon). I ... A: Did the service technician ask you if you wanted to have the system leak checked before he put the ... | |
| new burner or boiler | 8/20/2009 |
| Q: Our Wisconsin church has a 40 yr old non-condensing hot water boiler heating system. The boiler ... A: Condensing/noncondensing refers to whether or not enough heat is removed from the products of ... | |
| new burner or boiler | 8/19/2009 |
| Q: Our Wisconsin church has a 40 yr old non-condensing hot water boiler heating system. The boiler ... A: You don't mention much about the building/piping layout and usage. Church only, church and offices ... | |
| residential high-efficiency fans | 8/18/2009 |
| Q: What is the cost difference between a high efficiency fan and a standard fan for residential HVAC ... A: A continuously variable speed DC motor is more expensive initially than a standard blower motor, but ... | |
| Amana furnace problem | 8/17/2009 |
| Q: We have an Amana furnace that is about 7 yrs old and isn’t working. We had our vents cleaned last ... A: Most newer furnaces have an automobile style 3 or 5 amp low voltage fuse on the circuit board in the ... | |
| aircondotion/heating | 8/17/2009 |
| Q: I have a twop storied houise served by one centtral unit. the problem is that the 2nd floor is so ... A: Putting the fan in the "on" position instead of the "auto" at the thermostat may help some. If you ... | |
| heater ignitor | 8/17/2009 |
| Q: I have a question regarding my heater, how I could change the furnace ignitor? by the way I am a ... A: Is it a hot surface ignitor? There are 2 types. Silicon carbide ignitors have a ... | |
| home ac | 8/16/2009 |
| Q: my home ac unit seems to run alot and have a hard time cooling the house down. i have cleaned my ... A: Do you have an upflow furnace in the basement, a downflow in a closet/laundry room or a horizontal ... | |
| central a/c | 8/15/2009 |
| Q: Trimborn. The air coming out of the vents is very low so I called a tech. During the inspection he ... A: An 8 yr. old system should still have many years of life left in it. If this is the first time that ... | |
| NEW FAN MOTOR | 8/14/2009 |
| Q: My HVAC units fan motor had to be replaced. I pulled the old motor, while taking photos of the ... A: It sounds like you you don't have the correct replacement motor. The old motor sounds like a single ... | |
| central a/c | 8/14/2009 |
| Q: Trimborn. The air coming out of the vents is very low so I called a tech. During the inspection he ... A: How old is your system? That can make a lot of difference. Some leaks are repairable and some aren't ... | |
| New Blower Motor Barely Turns | 8/14/2009 |
| Q: I have a 10-12 year old Tempstar PGF018K040A package gas/electric unit. The blower stopped working ... A: Check the voltage supplied to the motor when the motor is running. It should match the voltage on ... | |
| Central Air | 8/13/2009 |
| Q: We are currently experiencing no air flow in our home. The outside fan is moving and there is no ice ... A: If the filter has gotten plugged up in the past the air can't go through it, so it goes around ... | |
| high velocity system | 8/12/2009 |
| Q: I have a 1 year old 3.5 ton system that isnt cooling my house consistently. I have the tstat set at ... A: Was it just for a clean and check the last time the tech was out? 74 degrees doesn't sound like an ... | |
| extended warranty | 8/11/2009 |
| Q: I am going to have a Trane xr15 system installed in my 1752 sq ft house in Fl. Does it pay to get ... A: If you are referring to the extended warranty through Trane, I would consider it a good value for ... | |
| blower fan | 8/8/2009 |
| Q: My AC blower fan starts then stops, I've replaced the run capacitor, and sometime it works for a few ... A: If the blower motor stops while you still have full voltage supplied to it, the problem would seem ... | |
| dog chewed wires on central air unti | 8/7/2009 |
| Q: Ok, I came home from work to find my house hot! The furnace unit in the house was running but not ... A: If you reattached the wires outside while the AC was still supposed to be running you may have ... | |
| cleaning condenser coils | 8/7/2009 |
| Q: is there a best practice for cleaning a/c condenser coils on comeercial RTU's ANSWER: Some ... A: The amp. draw on a propeller style blade fan motor will increase if it is starved for air, so if you ... | |
| cleaning condenser coils | 8/6/2009 |
| Q: is there a best practice for cleaning a/c condenser coils on comeercial RTU's A: Some commercial rtu's have split condenser coils and the top of the units must be taken off in order ... | |
| TOO HOT IN MY HOUSE. | 8/6/2009 |
| Q: HOW DO YOU KNOW IF MY A/C UNIT IS FULLY CHARGED? MY UNIT RUNS CONSTANTLY AND HOUSE WILL GET UP TO ... A: The air coming out of the supply registers is normally 18-20 degrees cooler than the air coming into ... | |
| Trane XL1200 | 8/4/2009 |
| Q: This is a brief history of the questions asked previously. I have a TRANE XL 1200 Super ... A: Difficult to say. A grounded compressor should trip the breaker right away, yet you said that the ... | |
| New compressor and still not cooling | 8/4/2009 |
| Q: My outside unit stopped working, it is a Rheem from 2002 unit. The repairman changed the compressor. ... A: Was the compressor failure a burnout or a mechanical failure? Most early compressor failures are due ... | |
| HVAC coil | 8/4/2009 |
| Q: I live in Florida. The house I bought was completed in 06-2000, with an installed Trane TWE042 ... A: Most(but not all) early compressor failures are due to improper installation procedures or ... | |
| AC CONDENSATE | 8/3/2009 |
| Q: I recently noticed water dripping from the "REFLECTIX" insulation that covers the AC coil and duct ... A: A 5 year old drain pan should not be cracked, but it is possible. If the evaporator coil has become ... | |
| Indoor Humidity Issue | 8/3/2009 |
| Q: First off I live in Central Florida. It is very hot and humid right now, and also raining heavy ... A: Stumping me too unless the humidity is much higher than before or you have developed a way for more ... | |
| Indoor Humidity Issue | 8/2/2009 |
| Q: First off I live in Central Florida. It is very hot and humid right now, and also raining heavy ... A: I am assuming that you have made sure that the cond. coil, evap. coil and blower wheel were all ... | |
| Coli Cleaning | 8/2/2009 |
| Q: I just received an assessment of my 15-yr old Heil 5000 unit from an Admiral "freon-charging ... A: The price for cleaning the coil seems excessive unless the only way to clean the coil is to pump ... | |
| Size of plenum on residential a/c unit | 8/2/2009 |
| Q: I recently hired a company to conduct a yearly inspection/cleaning on my residential central air ... A: Has the system been working fine for the last 4 yrs. until recently? If so the problem would more ... | |
| Air Cleaner | 8/1/2009 |
| Q: Okay, so I am really confused. What I thought would be a simple purchase has completely complexed ... A: Electrostatic filters tend to be very restrictive to airflow(not good). Media filters tend to be ... | |
| Duct Work but No Compressor | 8/1/2009 |
| Q: My husband and I purchased a house 12 years ago. The house was built in 1985. It appears to have ... A: If your ductwork has been designed for heating only it will probably be inadequate for a cooling ... | |
| Heat Pump not working in AC mode | 7/31/2009 |
| Q: I live in CT and have a heat pump system that is approx 15 years old. When the system runs in the ... A: In cooling mode the large copper pipe between the outdoor and indoor unit should be cold. In heating ... | |
| problem with air & ins. coverage | 7/29/2009 |
| Q: Just moved in to a new house and purchased American Home Shield home warranty (AHS)in escrow. After ... A: Yes you can replace the furnace without replacing the condensing unit or coil. Your coverage under ... | |
| Kickstart / Dual Capacitor (45/5) | 7/29/2009 |
| Q: I just had an AC repair (Amana 14 seer)4 ton or 5 ton unit. The tech came & installed a 45/5 Dual ... A: Mark ups are high in this business. Technicians, office personnel, physical plant, vehicles and ... | |
| Connecting wiring for electronic air filter | 7/28/2009 |
| Q: I have a Dynamic electronic air filter. I say's to connect the two wires to R and C. I understand R ... A: The 4 wire run from the t-stat connects to R,W1,G and Y. The 2 wire run from the outside AC ... | |
| HVAC Theory | 7/28/2009 |
| Q: I recently had an Amana 3 ton ASX16 16 SEER HVAC system with gas heat installed in my house in ... A: It sounds as if you have a variable speed DC motor for the blower. The correct setting for a 3 ton ... | |
| HVAC Theory | 7/27/2009 |
| Q: I recently had an Amana 3 ton ASX16 16 SEER HVAC system with gas heat installed in my house in ... A: Older systems with a fixed metering device feeding the evaporator coil did not throttle down the ... | |
| compressor delay | 7/27/2009 |
| Q: NOT ALL THE TIME BUT ONCE IN AWHILE MY O/S UNIT STARTS WITH THE FAN ONLY THEN AFTER ABOUT A MINUTE ... A: Both the compressor and the condenser fan motor are powered through the contactor. They should both ... | |
| air conditioning argument | 7/26/2009 |
| Q: "My father (88) and I (62) have a running disagreement about how to run the air conditioner in our ... A: Economically it is better to open the windows if there is enough circulation in the house when it is ... | |
| compressor delay | 7/26/2009 |
| Q: NOT ALL THE TIME BUT ONCE IN AWHILE MY O/S UNIT STARTS WITH THE FAN ONLY THEN AFTER ABOUT A MINUTE ... A: There should be no delay for the compressor starting. If it is an older unit you may benefit from a ... | |
| Trane XB 1000 Bad Compressor | 7/23/2009 |
| Q: I was having a problem with my ac unit not cooling down my house. As the temperature rose ... A: 100 PSI on the suction side is a high reading and 160PSI on the high side is a low reading. A 100 ... | |
| replacing freon in a 5 ton compressor | 7/23/2009 |
| Q: THe repair man who is installing new compressor in my 3 year old Carrier unit tells me the freon ... A: The freon in the system must be removed in order to replace the compressor. What was the problem ... | |
| removimg a gas furnace | 7/23/2009 |
| Q: I need to remove a furnace and cap off a gas line in order to have a heat pump/air conditioning unit ... A: It sounds like your taking all the precautions that you should. Once the pressure is off the gas ... | |
| Kenmore gas water heater Power Miser 9 | 7/22/2009 |
| Q: Main burner ignites and burns maybe 5 minutes. when it shuts down the pilot goes out with it. I ... A: Water heaters aren't my specialty, but years ago when HVAC techs did service water heaters I ran ... | |
| AHU Variable Speed | 7/20/2009 |
| Q: I recently had a new Goodman 4 ton system installed and the AHU has a variable speed fan. The ... A: On many variable speed units the default blower speed for the fan ON setting at the t-stat is 25-50% ... | |
| HVAC Problem | 7/19/2009 |
| Q: I have a rheem HVAC, Out of a 100 start ups once it want'ts to start but i only hear a suction or ... A: How old is your system? Adding a hard start kit to an older system(or even a new one that didn't ... | |
| airconditioning/heating | 7/19/2009 |
| Q: My office is at the far end of the house and it is freezing in the summer and too warm in the ... A: Normally there is a damper at the point that each supply takeoff comes off the main supply trunk. ... | |
| Carrier 38BRB - adding R-22 | 7/18/2009 |
| Q: Do you know if the Carrier 38BRB can with back seated valves - even though I do see a schrader valve ... A: I am not familiar with that specific model of Carrier. Most of the Carrier cond. units I have seen ... | |
| Condenser motor Noise | 7/18/2009 |
| Q: AC makes horrible noise when running, pinpointed noise to condenser motor. Sprayed some lubricant on ... A: If it hasn't been oiled regularly you may be past the point of oiling doing any good on a permanent ... | |
| MEASUREMENTS | 7/18/2009 |
| Q: first it seems like my t-stat when i change something is turns off and then maybe turn back on, like ... A: With the t-stat set to OFF you should read 24 volts from the R terminal on the t-stat to all other ... | |
| Central air conditioning unit | 7/17/2009 |
| Q: I live in southern Louisiana and need to replace my central air conditioning unit. My home has ... A: That sounds a bit too large even for the Phoenix AZ area where I lived for 5 yrs.. What size is the ... | |
| Squirl Cage Blower | 7/16/2009 |
| Q: I have a Ruud Furnace/ air conditioner system from 1879. I need to replace the blower and want to ... A: Goodness that's an antique(1879). The blower wheel is replaced by diameter,width and rotation(the ... | |
| HVAC | 7/16/2009 |
| Q: I am in the process of shopping for a new centrtal AC unit but I don't have a clue of which brand is ... A: When you compare, it must be apples to apples. The SEER rating on the units you are comparing has to ... | |
| AC gurgling in drain line | 7/16/2009 |
| Q: At my new home in TN. our AC man been back to service the upstairs Goodman ac/heatpump 6 times.The ... A: Drains on the return side of the system must be trapped. After the trap, the drain line must be ... | |
| Honeywell RTH111/221 Thermostat | 7/15/2009 |
| Q: I am installing a Honeywell RTH111/221 thermostat to control my gas heat, ac and fan. The previous ... A: For normal color coding the red wire should go to RC/RH terminals on the t-stat which may be ... | |
| Residential AC | 7/13/2009 |
| Q: AC quit blowing cold, slowly getting warmer over apx. 3 month period. Had friend come charge system, ... A: The evap. coil can be pressurized to 50-100 psi and then checked the next day to if it has lost a ... | |
| A/C blowing from cold to hot with out changing.... | 7/13/2009 |
| Q: My a/c will run fine for as long as 2-6months, then suddenly start acting as if it has a mind of ... A: It would be difficult to tell without knowing more about the system. It seems as though you are not ... | |
| Residential AC | 7/12/2009 |
| Q: AC quit blowing cold, slowly getting warmer over apx. 3 month period. Had friend come charge system, ... A: Did the contractor say there was a leak in the evap. coil? If they replaced the evap. coil and had ... | |
| 5 ton condenser unit | 7/12/2009 |
| Q: i just replaced a 5 ton condenser unit that was grounded out and now my new one went out.What could ... A: How long after the condensing unit was replaced did this problem appear? It is possible that when ... | |
| humidity | 7/10/2009 |
| Q: I had a 4ton straight cool which was replaced with a 3 ton heat pump - per load calculation. It ran ... A: With a continuously variable speed motor you should have the option to decrease the air volume from ... | |
| air conditioner fan | 7/10/2009 |
| Q: Goodman unit, 4 years old. Stopped cooling upstairs, however I feel air going into the intake. The ... A: Does the compressor run in the outside unit or are both the compressor and the fan in the outside ... | |
| installing new furnace and air conditioning | 7/9/2009 |
| Q: We are currently replacing a radiant ceiling heat system. Under options is listed "electronic air ... A: Electronic air cleaners do a very good job(especially if someone in the house has allergies) but ... | |
| gas air conditioner | 7/9/2009 |
| Q: In Indiana visiting family and my moms natural gas central cooling system won't kick on. The blower ... A: If nothing runs outside you probably have a high or low voltage loss to the outdoor unit. You would ... | |
| baseboard heat | 7/9/2009 |
| Q: We have a boiler with pipes that run to the baseboard heaters in all rooms. We are installing a ... A: If you disconnect and cap off that run you will lose all the heat that radiator produced. If you ... | |
| AC blower turns on intermittently | 7/8/2009 |
| Q: I have a 13 year old LENNOX AC unit and some kind of builders grade blower in the Attic. The Unit ... A: You may have a problem with either the motor or capacitor the is causing it to shut down on internal ... | |
| altitude spec. on a/c unit | 7/7/2009 |
| Q: Will an American Standard Triumph 16 packaged unit with a specification altitude rating of 0 - 2000 ... A: The altitude specification is for the gas heating side of the unit. The gas manifold orifices should ... | |
| Freon cost $185.60 | 7/7/2009 |
| Q: In addition to the big annual check up fee I was charged $185.oo for four pound of Freon. The ... A: If you have a 3 yr. old system that needs 4 lbs. of freon, you have a leak. The technician should ... | |
| Control circuit issues | 7/6/2009 |
| Q: I wired together yellow of the cooling circuit and blue(common) before turning off the indoor air ... A: What was the original problem that had you tying the wires together? If the air handler has ... | |
| Air conditioner contracts | 7/5/2009 |
| Q: Trying to help out my elderly father down in Fla. He is asking me about getting a service contract ... A: Most companies these days do not write full coverage service contracts(covering cleanings and parts ... | |
| In attic A/C leak.... | 7/5/2009 |
| Q: Timborn, i have a question for you....I noticed a leak in my ceiling right where our attic A/C unit ... A: If its backing up into the drain pan and the drain pan is overflowing it is most likely a plugged ... | |
| ac drip at vent | 7/5/2009 |
| Q: in an upstairs closet the vent is dripping. There is an attic access panel in that closet. I live ... A: You should check the whole duct branch to the register outlet to see if moisture is accumulating in ... | |
| SEER rating | 7/4/2009 |
| Q: I've been trying to find the SEER rating of my ComfortMaker air conditioner unit. The installer ... A: How long the system runs depends on the outside temperature, whether everything is clean(filter, ... | |
| air handler drain line | 7/4/2009 |
| Q: Does the drain fittings need to be glued together and can they just hook together dry? I know it ... A: The drain fittings should be glued, but I usually leave the upstream side of one of the horizontal ... | |
| Turning off upstains AC | 7/3/2009 |
| Q: We have a two story home and are now empty nesters. We live in the downstairs and the upstairs is ... A: If you have high humidity in your area and you run only 1 of 2 units you may have trouble keeping ... | |
| Wrong run capacitor installed? | 7/2/2009 |
| Q: Due to a lack a parts at the time, I replaced a residential dual run capacitor rated 60/3 370 volts ... A: Yes you should replace the 5mfd with a 3 mfd. The voltage rating is ok since you can always replace ... | |
| Freon | 7/2/2009 |
| Q: I'm a new homeowner and would normally ask my Dad these questions, but he passed away suddenly in ... A: If it was very low on freon then there is a leak in the system. You need to have the system leak ... | |
| HVAC Handler in attic | 7/1/2009 |
| Q: Sir I am in the process of buying a townhome in Freeport FL and had the home inspected. The ... A: The air handler in the attic should have a secondary drain pan under the unit with a float or wet ... | |
| evap coil | 7/1/2009 |
| Q: I have a Rheem Model RCBA-2459GG14 cased evap coil, 1994 installed. Indoor unit is vertical, ... A: This should not be a capillary tube coil because of the install date. The distributor tubes are ... | |
| RHEEMS Compressor failed | 7/1/2009 |
| Q: Lodi, California (it was 110F on Sunday so I am motivated) The house I purchased in 1990 has a ... A: Yes you can just replace the compressor. Yes a new system will cost more than just replacing the ... | |
| airconditioner | 6/29/2009 |
| Q: I live in Houston Texas the tempature is around 100 degrees outside if i have the ac set on 70 at ... A: It depends on sizing practices in your area. If your area has high humidity during most of the ... | |
| a/c question | 6/29/2009 |
| Q: i have no low voltage to yellow wire coming from the thermostat or if i test at thermosta only red ... A: The majority of thermostats do not have a 24v common wire to them. What are you testing the R(red) ... | |
| Replacing outside unit of split system | 6/29/2009 |
| Q: My system is almost 20 years old. The compressor of outside unit must be replaced. Should the ... A: Yes the outside unit only can be replaced, but it doesn't make much sense as a 20 yr. old evaporator ... | |
| Need a new A/C & Heater | 6/28/2009 |
| Q: It is time to get a new system. We have gas. There are various businesses out there who can give us ... A: Most major manufacturers equipment are all comparable. In order to compare apples to apples, "good', ... | |
| 1/2 to 3/4 hp furnace blower motor | 6/27/2009 |
| Q: and thankyou ahead of time for any helpful info. I currently have a Rheem Classic 90 Plus ... A: The blower motor horsepower is sized by the manufacturer for the size of the blower wheel. Since ... | |
| Steam cleaning ac coils | 6/27/2009 |
| Q: I have access to my ac coils (condenser as I have heard it referred to) I have heard of the ... A: I am not sure which coils you are talking about. Condenser coils are the outside part of the system ... | |
| Central air conditioning units | 6/26/2009 |
| Q: Norval, What is the best company (brand) to buy a central air conditioning unit from? How do you ... A: Any of the major brands put out good solid equipment. Trane is one of the brands that I have always ... | |
| Bad A-Coil & Drip and and Should I Replace! | 6/26/2009 |
| Q: I recently discovered water at the bottom of my furnace after running my central air. Had service ... A: If you are just looking to get by until the condensing unit must be replaced then a replacement ... | |
| AC fan shuts off | 6/26/2009 |
| Q: We have a Goodman CKL-30-1f air conditioner. We had a repairman come and he found the capacitor ... A: If both the old and the new motor are the same voltage, horsepower, rpm and rotation it would seem ... | |
| Lennox HP22, cooling problem | 6/26/2009 |
| Q: I have a Lennox HP 22 Heat pump. The unit runs fine and has no out of the ordinary noises coming ... A: It is possible that the system is low on refrigerant. It is also possible that there is another ... | |
| AC Usage | 6/25/2009 |
| Q: Greetings, I have a general, non-vendor specific question I was hoping you could help with. My ... A: Running a central air system that is working properly and is clean and has a clean filter in it does ... | |
| Central a/c | 6/25/2009 |
| Q: If I am trying to cool my 760 sq. ft. apt to 70 degrees, what should the temp of the air that blows ... A: The supply air temperature should be 18-20 degrees colder than the return air at average relative ... | |
| HVAC working no, air in vents, house not cooling | 6/25/2009 |
| Q: Trimborn, I have an HVAC unit and it seems to be working full speed, but no air is coming out of the ... A: Check to see if the system is icing up. This starts at the evaporator coil inside and can work its ... | |
| New A/C Unit & Wiring Problem | 6/24/2009 |
| Q: We have a 30 yr old central air system. The a/c has been limping along for the past few years, ... A: Both the furnace and also the condensing unit should be dedicated electrical circuits( they should ... | |
| saftey switch on a little giant pump | 6/24/2009 |
| Q: I am installing a little giant condensation pump on my Trane central air unit.I have 2 wires coming ... A: You would actually put these 2 wires in series with the "Y" connection at the furnace/air handler ... | |
| central air conditioning | 6/24/2009 |
| Q: I need to replace my central air conditioner and gas furnace, I am leaning toward the duel fuel ... A: I have seen a great many heat pump systems in the 15- 25 yr old range. Is the normal life span of a ... | |
| hvac | 6/23/2009 |
| Q: We installed a new frigidaire hvac unit in 2004. We have had nothing but trouble w/ the temperature ... A: Not enough cooling, freezing up and water leaking sounds like the symptoms of a refrigerant leak. It ... | |
| Hard Start Kit for Residential A/C | 6/22/2009 |
| Q: I have a small ductless mini split system (Heat Controller, Inc.) that conditions a room over a ... A: If the run capacitor was ok but the compressor wouldn't start then the hard start kit kept you from ... | |
| A/C not cooling well. | 6/21/2009 |
| Q: I have a two story home with separate units for each floor. I never have the downstairs(basement) ... A: It could be a number of reasons. 68 degrees is a bit below the normal comfort range of 72-76 ... | |
| Line insulation | 6/21/2009 |
| Q: I noticed that only the large line (1/2"-3/4") from the heat pump to the air handler is insulated ... A: The smaller of the 2 lines is the liquid line and the liquid refrigerant in the line has been cooled ... | |
| Melted AC Drain Pan | 6/21/2009 |
| Q: I have a goodman GMPN100-4. Turned on the AC for the first time and had water all over the floor in ... A: There is a good chance that the drain pan was damaged when the blower motor failed if the furnace ... | |
| Honeywell Chromotherm 3 not working? | 6/20/2009 |
| Q: I have a Honeywell Chronotherm 3. When I turned the AC on the first time this year, the fan would ... A: It could be either. Check the battery contacts on the thermostat to make sure that they are not ... | |
| Attic fan versus whole house fan | 6/20/2009 |
| Q: My husband and I moved into a 3 year old two story home. The AC works great on the first floor but ... A: A temperature actuated attic exhaust fan will reduce the temperature difference between the attic ... | |
| reaching absolute optimal freon charge | 6/20/2009 |
| Q: For years (I'm 55) I have wanted to know how to reach supercool or optimize using supercool method ... A: I have to assume that your system has a fixed metering device rather than a txv. The most accurate ... | |
| seer | 6/20/2009 |
| Q: Can a 12 seer inside coil be matched with a 13 seer condensing unit? We installed a new furnace and ... A: Yes a 12 SEER indoor coil will work with a 13 SEER condensing unit. You will not achieve a 13 SEER ... | |
| AC drain line blowing cold air | 6/20/2009 |
| Q: There is a pvc line exiting the AC unit that has a short piece of pvc sticking up that is blowing ... A: The pvc line is the condensate drain line for the A/C. If the evaporator coil is on the supply side ... | |
| Central air & water | 6/19/2009 |
| Q: I have a Trane XE1000 and the attic unit is dripping water onto the ceiling. It appears that there ... A: The most likely cause is a plugged condensate drain line. If the insulation inside the unit is wet ... | |
| Frozen central AC | 6/19/2009 |
| Q: My Central AC unit is frozen. We just had it serviced 2 weeks ago, the freon was fine and we also ... A: A frozen unit is usually due to inadequate air flow(dirty filter,evap.coil, blower wheel or closed ... | |
| heat pump thermostat doesn't work | 6/19/2009 |
| Q: I live in Gulfport, MS. In Feb, contractor replaced old GE heat pump with new XL16 Trane heat ... A: If the system runs continuously but doesn't cool down the house it would seem that the problem is ... | |
| lennox ac unit model#10acb24-9p | 6/18/2009 |
| Q: my ac wont turn on i have a honeywell electronic thermostat and when i switch to ac the ac symbol ... A: The blinking AC normally means that the thermostat is not getting 24volts to power it. If this ... | |
| AC unit | 6/17/2009 |
| Q: I have a question about the coil on an American Standard Heat/Air home system. I am not sure how ... A: No problem with the length of the question. The more information you give me the better I can ... | |
| R-410 A/C system | 6/16/2009 |
| Q: I want to know what should be done on a residental air conditioning unit using R-22 to change the ... A: You will have to change both the outdoor unit and the indoor unit. It is also preferable to replace ... | |
| York Central Air Unit | 6/15/2009 |
| Q: I have a York Central Air Unit, 3 zones and 2 programmable thermostats. When you first turn the ... A: Without being able to see the system setup and directly troubleshoot the system while the problem is ... | |
| Central Air | 6/15/2009 |
| Q: I bought a house with a pretty old A/C unit that hasn't worked yet. Today I opened it up and hit the ... A: Is the burning smell inside or outside? It could be a motor, transformer, contactor or wiring etc.. ... | |
| Luxaire home central air problem. | 6/15/2009 |
| Q: i just moved into a house in Michigan with a Luxaire central air conditioning system that looks ... A: It sounds like you may have a system that is well past its prime with multiple problems. If there is ... | |
| Condensor fan replacement | 6/14/2009 |
| Q: The fan on my daughters outside condensing unit is making a lot of noise and needs replacing. I am ... A: As long as the fan motor is the same horsepower, voltage, rpm, direction of rotation and mount you ... | |
| Trane compressor not turning back on | 6/13/2009 |
| Q: I have three trane 4 ton units in my house. When i have a jerk of power meaning it goes off then on ... A: If you don't already have one a start relay and capacitor might help. You could also wire a small ... | |
| Goodman central A/C won't run | 6/11/2009 |
| Q: Mr. Trimborn, My Goodman A/C services my 400sf condo which is just 2yrs old. I used it 2 weeks ago, ... A: If you have a float switch in the secondary safety drain pan it should only be off(open) if there is ... | |
| variable speed air handler | 6/11/2009 |
| Q: Live in houston, tx and have a goodman vs airhandler w/ emerg. heat paired w/ 3.5 ton condenser. I ... A: I am not sure about the dip switch settings that are specific to your goodman unit. They should be ... | |
| Goodman central A/C won't run | 6/10/2009 |
| Q: Mr. Trimborn, My Goodman A/C services my 400sf condo which is just 2yrs old. I used it 2 weeks ago, ... A: If the A/H is in the attic you may have a safety float switch in the secondary drain pan under the ... | |
| Convert a 10 SEER to a 13 SEER | 6/10/2009 |
| Q: We built our house and moved in Nov 2006. We thought we got a 13 SEER AC unit. This weekend the ... A: If the evap. coil will accept either a piston or an expansion valve, then it can be converted. Not ... | |
| Problems with my York | 6/9/2009 |
| Q: I have a 3 1/2 ton outdoor York unit, about 18 years old. It has worked flawlessly for these 18 ... A: It is probably a bearing wear problem with the condenser fan motor and you may have to replace the ... | |
| blower moter | 6/6/2009 |
| Q: bought a blower motor for unit 58gp075-ga and the old motor is 4 speed 9.8 amps and no capacitor, ... A: I assume the new motor that you got is the same horsepower,voltage, rpm and direction of rotation. ... | |
| air conditioner capacitor | 6/5/2009 |
| Q: i am looking to replace the dual capacitor in our central air conditioner at home, it has a ... A: There are a few choices in finding out which capacitor you need. The first is to go to the ... | |
| Corroded coils | 6/5/2009 |
| Q: An HVAC technician just left after inspecting my upstairs unit, Carrier 38YCC, which is a little ... A: I assume you are talking about the outdoor(condenser) coil on a split system heat pump. At just over ... | |
| Lenox AC | 6/5/2009 |
| Q: I have a residential Lennox High Efficiency AC unit about 12 years old (I think it is a 2 ton). ... A: "Zerol Ice" is an additive that when added along with the oil already in the system help to decrease ... | |
| AC replacement/split system | 6/3/2009 |
| Q: I want to replace a Lennox model 10ac48. Does it matter much if I replace the condenser with another ... A: I assume you plan to replace the condensing unit only without replacing the evaporator coil. As long ... | |
| Freon vs. Puron | 6/3/2009 |
| Q: I am in the process of getting a new air conditioner. Went on the web and learned there are still ... A: While there are no inherent problems with R-410A as a refrigerant itself, it has some ... | |
| Air discharge Temp on cool cycle | 6/2/2009 |
| Q: My cooling system seems to run constantly. I checked the air intake temp, 76 degrees, and the air ... A: Delta T (difference in temperature between return air and supply air) is normally about 18-20 ... | |
| Heat Pump Not Working in Cooling Mode | 6/2/2009 |
| Q: We have a dual heating/cooling system in our home. Heat pump services the upper level. (Trane model ... A: The system should be repairable. While it is possible that the compressor failed due to a ... | |
| Replacing A/C unit | 6/2/2009 |
| Q: I live in a suburb of Kansas City. The house is approx. 11 yrs old with a Lennox Elite A/C unit. I ... A: If the leak can be found and repaired you may be able to get some more life out of the system. A lot ... | |
| ac air handler replacement | 6/1/2009 |
| Q: About 4 years ago I had my outside condenser only replaced with a miller 1.5 ton unit at my St Pete ... A: It is not unusual for a 25 yr. evap. coil to develop leaks at multiple return bends. I am not ... | |
| Residential air conditioner | 6/1/2009 |
| Q: What causes thne large line coming out of the condenser to ice over? What needs to be done to fix ... A: The flow in the large (suction) line is back towards the condensing unit. Icing up can be caused by ... | |
| New central air makes me sick and has weird odor? | 5/31/2009 |
| Q: I live in a 50 year old home that had a new central air conditioning unit installed. We used to use ... A: Cannot tell exactly what the problem is without being able to smell the odor. Possibilities would ... | |
| covering exterior vent pipes | 5/31/2009 |
| Q: I used to sell HVAC equipment to contractors before becoming a realtor. I referred an experienced ... A: I don't know of anything that is made to cover the vent pipes outside the house. Normally the vent ... | |
| heat pump | 5/29/2009 |
| Q: I have an american standard heat pump. At 80 degrees F today I am running a suction of about 80 and ... A: I would need more information to have an idea of what is going on with the system. What is the ... | |
| Rusted out drain pan | 5/29/2009 |
| Q: I have just learned that the drain pan is rusted out in my 20 year old unit. What concerns should I ... A: If an exact replacement for the original drain pan is available that would be an option. At 20 yrs. ... | |
| Lennox Heat Pump | 5/28/2009 |
| Q: I bought a brand new house in January and I recently needed the AC function of my brand new Lennox ... A: You should only need to switch the thermostat to the cool position to have the A/C run and cool. The ... | |
| upducts | 5/28/2009 |
| Q: We no longer use swamp cooler thus no use for upducts in ceiling for swamp cooler and I notice alot ... A: The only effective way of keeping the heat from the ductwork from entering the conditioned space ... | |
| "Attic" Smell | 5/11/2009 |
| Q: I have a smell coming from the duct work that smells somewhat like the smell of my attic, but ... A: Depending on the tightness of the house and the integrity of the return ductwork by the furnace it ... | |
| Central Air Conditioner Question | 5/11/2009 |
| Q: I live in a home in AZ I bought brand new 3.5 years ago. First time I noticed that my AC (for ground ... A: I lived in Scottsdale for 5 years, so I know what the weather is like. While it is entirely possible ... | |
| Home AC Unit | 5/11/2009 |
| Q: I know I'm going to sound silly but I have a Carrier home AC unit. I know that there is a part of ... A: You will probably need a service technician to get to the source of the problem. If the inside runs ... | |
| Compressor, coil, air handler | 5/10/2009 |
| Q: I'm told that one of my compressors and coils will need to be replaced. Is it normal to replace ... A: In a cooling only application, the evaporator coil normally comes with the air handler. If you are ... | |
| Trane heat pump | 5/10/2009 |
| Q: I have a Trane split system heat pump about 18 years old. It's model# is TWD724B100A1. Is this a ... A: Yes that is a 2 ton system. If you are planning on repairing rather than replacing the system you ... | |
| AC/heaters | 5/9/2009 |
| Q: We have a very old (30yrs) Carrier AC/heater combo in Phoenix, AZ, and it currently works well. It ... A: Some parts may be available as universal replacement parts and some strictly O.E.M. (Original ... | |
| Fuse blowing on furnace | 5/9/2009 |
| Q: I have a York High efficiency Tubular Heat exchange series GY8S Furnace, the thermostat wasn't ... A: Blowing the low voltage fuse on the circuit board intermittently can be a very difficult problem to ... | |
| Amana PTAC will not operate | 5/8/2009 |
| Q: I have an Amana Model PTH153A35AA ptac (heat pump). the unit is 12 years old. For the last year, it ... A: From the price you are telling me that a new unit costs, I am assuming that this is a through the ... | |
| Air conditioner | 5/6/2009 |
| Q: I believe I may have emailed you earlier but now another problem. I'm the one with the Emerson air ... A: If the compressor is running but the outside fan is not the system will develop excessive head ... | |
| Contactor points | 5/6/2009 |
| Q: I have a Cariier unit that sits outside the house, when turning the AC, air comes out of the vents ... A: Contactor points are not available as a separate part, you must purchase a replacement contactor. ... | |
| which a/c unit to purchase | 5/6/2009 |
| Q: We have two Trane 2.5 ton heat pump, split systems, that are 22 y.o. They both need replacing. We ... A: Any brand of system or unit that is rated at the same efficiency and has the same features should do ... | |
| heating and air conditioning units | 5/6/2009 |
| Q: Building a new home 2000 square feet and want to know what size units (heating and air conditioner) ... A: Old "rules of thumb" for sizing a/c units by square footage are different in different parts of the ... | |
| Cleaning coils on York air handler units | 5/5/2009 |
| Q: How do I clean between coils that are sandwiched together? A: It depends on how dirty and packed the space between the fins are on the coil. Normal yearly ... | |
| supply register on furnace plenum in basement | 5/5/2009 |
| Q: I live in Western NY and have a ranch house with unfinished full size basement with forced air NG ... A: The window question is outside my area of expertise, but it seems that if cold air is leaking into ... | |
| Condenser Fan isn't working | 5/4/2009 |
| Q: . I live in Ohio ... the heat hasn't hit bad yet, but I noticed when we had the air on the other ... A: It could be either the motor or the capacitor. A capacitor can be weak without being "bloated" or ... | |
| S.E.E.R. rating&freon loss | 5/4/2009 |
| Q: I moved in two years ago,I have had to get freon every 6to8 weeks since.My home warranty says it ... A: SEER rating is the BTU output divided by the watt-hours of energy input over a specific period of ... | |
| supply register on furnace plenum in basement | 5/3/2009 |
| Q: I live in Western NY and have a ranch house with unfinished full size basement with forced air NG ... A: Closing the register on the supply plenum won't affect the combustion air for the furnace in a full ... | |
| Capacitor | 5/2/2009 |
| Q: "Outdoor Capacitor is a 35/5. Lowest allowed by MFR - 32/9. Now testing at 32/7." Replace for ... A: Capacitors should be within plus or minus 10% of their rating to operate correctly. If they are ... | |
| heat return | 5/2/2009 |
| Q: We live in a capecod with an attached garage. We are finishing off a large bonus room over our ... A: The ideal placement for returns and supplies for air conditioning are for both to be high. The ... | |
| TRANE XE-80 heating problrm | 5/2/2009 |
| Q: ..I live in CA. Problem with Trane XE-80 heating. ( A/C works fine ). When set to heat, flame comes ... A: The normal reason for tripping the high limit is insufficient air flow. Most of the time if the unit ... | |
| 1980 model HVAC system versus enery efficiency HVAC system now | 5/1/2009 |
| Q: energy saving of using new model HVAC compare to old model 1980 HVAC system. What are the benefit ... A: In gas furnaces, the efficiency relates to the percentage of the heat produced that actually goes to ... | |
| Intertherm AC drip pan rusts, plugs, overflows | 4/30/2009 |
| Q: My mother's modular home in Michigan has an Intertherm central forced-air combination gas furnace ... A: Most newer units have changed to plastic condensate pans, but the older ones were steel. With the ... | |
| new HVAC unit | 4/30/2009 |
| Q: I have been getting some estimates for a new HVAC unit. Ours is over 25 years old. I've been ... A: The Gibson brand is made by Nordyne. I have not been impressed by either Gibson or Coleman. Try ... | |
| access valve | 4/29/2009 |
| Q: on a reciprocating compressor that has a port above the sight glass for a access valve fitting, what ... A: Yes you can add oil through the suction port. HVAC parts suppliers have pumps specially designed for ... | |
| American standard vs trane and amana | 4/28/2009 |
| Q: I am getting a quote from different contractors to install a 3 ton a/c unit.. I have quote of 6000 ... A: Trane and American Standard with the same features and efficiencies are basically the same unit. If ... | |
| Conversion to multi-zone possible? | 4/28/2009 |
| Q: I have a 30-yo 2500 sq-ft home in Northern Virginia with forced air heat and AC. Single zone ... A: I can't really answer the question as to cost because I have never priced out that type of job for a ... | |
| Outside Compressor issue | 4/27/2009 |
| Q: I had a heating contractor fix my furnace this winter and I just tried using our A/C but the outside ... A: The terminal marked Com24v is the same as C. There are normally 4 wires coming from the thermostat ... | |
| Goodman 13 Seer Heat Pump Problems | 4/27/2009 |
| Q: Our power more than doubled 4 months ago so we had the people who installed come out and look at our ... A: It sounds as if you have a leak in the system. While it's possible that there was a leak at the cap ... | |
| Rheem RQKA-A042JK With Option 541 | 4/27/2009 |
| Q: My unit is freezing up. So I contacted a local ac tech. He came out and charged my system for me ... A: 55-65 psi on an R22 system corresponds to just below or just above freezing(32 degrees). When run at ... | |
| HVAC unit blower | 4/27/2009 |
| Q: You have previously answered this question .The fan on my air conditioner/heater system will not ... A: Some questions are specific to individual units/brands and can't be taken as a general across the ... | |
| Running Central AC with cover on | 4/26/2009 |
| Q: My super intelligent wife has been running the Central Ac unit of my house for 20 hours with the ... A: It is possible that you have a dead compressor. Running the unit with the cover on will cause ... | |
| gas furnace fan rumbles | 4/26/2009 |
| Q: I have a coleman presidential 7600b series gas furnace from the 70's in my 70's trailer house. ... A: This problem can have a number of causes. The blower wheel can be out of balance or dirty. The ... | |
| breaker / to much voltage | 4/26/2009 |
| Q: Good morning,The problem i'm having is with my central air ! when i go to turn the a/c on the ... A: 260 to 300 volts seems high for supply voltage. Most electric service providers regulate the supply ... | |
| a/c causing damp wall | 4/26/2009 |
| Q: my a/c split unit has a pipe to lead the waste/condensed water out of the house. this pipe(set in ... A: Depending on where the unit is located it may be possible to use a condensate pump by the indoor ... | |
| air conditioning | 4/25/2009 |
| Q: I have hot water heat in an older house. How can I install air conditioning? Thanks......Darlene A: One of the easiest ways to install A/C in a house with hot water heat is to use a high velocity/low ... | |
| Payne Heat Pumps | 4/25/2009 |
| Q: I need to replace a 23 year old 2 ton York heat pump on a rental unit. The best bid that I've ... A: Builders models of HVAC equipment are generally the lowest cost bare-bones types of units. They tend ... | |
| What heat pump unit with gas pack is best | 4/25/2009 |
| Q: my present heat pump is 18 years old. It has been serviced regularly and is still working fine, but ... A: I am not familiar with the lowest winter temperatures that you see in that area. Do you have only a ... | |
| no air from ducts | 4/25/2009 |
| Q: I have a Goodman heat pump/AC, and the air filter has been changed, and there is power supply to the ... A: Some Goodmans use a time delay relay to delay both the starting and stopping of the blower motor. ... | |
| outside york unit | 4/24/2009 |
| Q: have 2 york's outside, one runs upstairs, little bigger one runs middle floor and basement, the one ... A: If the compressor and fan run when you push in the "points" on the contactor it would indicate a ... | |
| burned up motor in furnace and a/c | 4/24/2009 |
| Q: I just found out that my a/c unit burned up a motor. How does that happen? What can a DIY do fix the ... A: From what I understand, the blower motor in your furnace burned out while you were running the air ... | |
| outside york unit | 4/24/2009 |
| Q: have 2 york's outside, one runs upstairs, little bigger one runs middle floor and basement, the one ... A: Since both the fan and the compressor will not run the problem should either be no line voltage ... | |
| drip pan overflow | 4/23/2009 |
| Q: where can I purchase a overflow switch that would shut off the ac and possible sound an alarm or ... A: A number of types of safety switches are available for drain pans that will install in either the ... | |
| rheem | 4/22/2009 |
| Q: have a upflow rheem as a piggyback on heat pump with control board that goes into emergency heat no ... A: It is very difficult to diagnose a problem without being on the spot and able to logically follow ... | |
| copeland compressor | 4/22/2009 |
| Q: steps on how to add oil to a compressor? what equipment is needed for the job? any tips? thanks. A: Why do you need to add oil to a compressor? Most new and replacement compressors are shipped with ... | |
| heating problem | 4/22/2009 |
| Q: I have a comfortmaker furnace that comes on, the pilot lights but gas never flows. If i take the ... A: If the furnace has an intermittent pilot that always lights off, but you do not always get the ... | |
| time delay relay | 4/21/2009 |
| Q: Looking for a time delay relay for a 36000 Btu Friedrick a/c. Have a generator in power system when ... A: Time delay relays are usually available through an HVAC supplier(most will not sell to an ... | |
| furnace not working after power outage | 4/21/2009 |
| Q: I'm having a problem with my gas forced air furnace after just recovering from a 4 day power outage ... A: Check the low voltage at the circuit board first. If you have 24v at the circuit board, the problem ... | |
| furnace not working after power outage | 4/21/2009 |
| Q: I'm having a problem with my gas forced air furnace after just recovering from a 4 day power outage ... A: Without being there to troubleshoot it is difficult to diagnose. Do you have 24v between R and C on ... | |
| Mitsubishi 3.5hp split system air conditioner | 4/20/2009 |
| Q: My Mitsubishi 2 way split system air conditioner about 7 years old has stopped working. I recently ... A: Very difficult to diagnose without actually being there to check the unit. How long was the unit ... | |
| replace theromstat | 4/19/2009 |
| Q: i live in socal., and i recently replaced an old mercury run 4 wire thermostat with an honeywell ... A: Was the old thermostat working when you replaced it or did you replace it to try to solve a problem? ... | |
| Smell Of Death | 4/18/2009 |
| Q: There is an extremely foul odor coming from our vents.Even when the heat or a/c is shut off it is ... A: I would think that a pest control company would have experience in removing dead or live pests from ... | |
| Gibson GL1RA series | 4/17/2009 |
| Q: My tenant reports that one morning the pre-programmed thermostat did not kick on the heat as usual. ... A: Very difficult to say without being there to troubleshoot when the problem was happening. The first ... | |
| ac handler | 4/17/2009 |
| Q: Ineed help and this is the problem: "Compressor will kick on but the air handler will not" I ... A: It could be a number of things. Some Goodmans of that approximate age had time delay relays to turn ... | |
| heat calculator pump | 4/17/2009 |
| Q: What does it mean when the light in on and it says to call for heat calculator pump? A: You haven't given me very much information to work on. What type, make and model of equipment are ... | |
| Heat Exchange Unit | 4/16/2009 |
| Q: I have an older forced air furnace (Carrier DNP 24cc-9). I was told recently that the heat ... A: Most heat exchangers can be replaced if they are available, but manufacturers generally only have ... | |
| hvac unit on roof of house | 4/15/2009 |
| Q: is it okay to mount an hvac unit on the roof of a house or is it a code violation? the house is ... A: I am not sure about local(or association) codes in your area, but when I lived in Scottsdale AZ it ... | |
| Leniox Furnace model VR8200 | 4/15/2009 |
| Q: I have a Leniox furnace model vr8200 and I can not find the filters.. the furnace is in my attic. A: All newer furnaces have been mandated to ship with a means of filtering integral to the unit. This ... | |
| troubleshooting HVAC | 4/14/2009 |
| Q: What are the symptoms of a dirty evaporator coil. What will my pressures and temperatures read. ... A: ??? Ambient temperature is outside temperature. No relation to SEER rating except for the specific ... | |
| Bryant gas furnance works randomly | 4/14/2009 |
| Q: I have a Bryant Model 376CAV048095 Gas furnace. It was working randomly by turning on and off the ... A: The circuit board powers the gas valve after a predetermined amount of time to warm up the hot ... | |
| Finding A/C System leak | 4/14/2009 |
| Q: During a recent checkup My mom's Lennox 10 SEER 2 ton with Armstrong indoor coil has developed a ... A: ultrasonic leak detectors are really good at finding leaks in hard to reach places where sniffers or ... | |
| rheem furnace | 4/14/2009 |
| Q: I have an older rheem furnace and it has worked perfectly for the past 8 years I have owned the ... A: On a standing pilot system where the pilot will only stay lit for a short amount of time the problem ... | |
| adding an economizer to an existing system | 4/14/2009 |
| Q: i have a luxaire package ac and heat unit model # dl-05ni3ataaa1 serial # noc6124606 5ton unit. The ... A: Is this for a residential system? Most package units have the ability to accept an economizer, but ... | |
| AC unit replacement | 4/13/2009 |
| Q: Currently in the process of getting quotes on replacing my 13 year old AC/heating unit. My current ... A: It's always helpful to know what area of the country that you live in in order to try to answer most ... | |
| condensate pump | 4/12/2009 |
| Q: i recently switched my air handler from gas to electric the problem is installing a condensate pump ... A: When switching from gas to electric furnaces supply voltage is normally increased from 120V to 240V. ... | |
| troubleshooting HVAC | 4/11/2009 |
| Q: What are the symptoms of a dirty evaporator coil. What will my pressures and temperatures read. A: Temperature difference across system in either heating or cooling will increase( difference between ... | |
| Combination Boiler/Furnace Operation | 4/11/2009 |
| Q: I recently saw a combination oil boiler / heat pump. How do I determine which is primary heat and ... A: I am not familiar with these combinations. Boiler(hot water/steam) and Furnace(forced air) or oil ... | |
| NuTone ComboPak HVAC | 4/10/2009 |
| Q: Mr Trimborn, I currently have a Goodman combopak HVAC and have replaced just about every component. ... A: Mark, I am not sure what you mean by a combopak? Residential split systems have a furnace inside ... | |
| a.c. will not run | 4/10/2009 |
| Q: Kenmore condenser unit, app. 5 yrs. old 2 ton, grandaire air handler same as ruud, brand new 2 ton. ... A: I am assuming that this is an A/C ONLY system. Is the new tstat a honeywell T86F? Some new tstats ... | |
Heating, Air Conditioning, Fridge, HVAC
Answers by Expert:
Norval Trimborn
Top Expert on this page
Expertise
Residential and light commercial HVAC service and repair questions
Experience
40 years of HVAC Service
Organizations
Refrigeration Service Engineers Society
Education/Credentials
HVAC Certificate, Trane Comfort Specialist, NATE certified Heat Pump Technician
©2012 About.com, a part of The New York Times Company. All rights reserved.