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About Joe
(Top Expert on this page)

Expertise
Answer questions pertaining to Residential and Commercial Air Conditioning and Heat Pump systems. Mechanical and Electrical troubleshooting of these units.Be as detailed as possible when describing problem.Packaged unit vs split systems.Give age of eqiuptment.And what type of heat,Heat Pump,Oil, Gas ,or Electric.

Experience
35 years experience, diversified HVAC/R . Installation and Troubleshooting, Mechanical and Electrical, in following areas, Refrigeration( Walk in and Reach in Coolers and Freezers )Commercial Roof Top and Packaged Heating/Cooling ( Natural Gas,Propane, Electric, and Heat Pumps ) Computer Room Air Conditoning Systems,Commercial Chilled Water Air Handlers and Recipercating Compressors. Residential Packaged and Split Systems Air Conditoning and Heat Pumps.Warm Air Oil and Natural and Propane Gas Heating systems.

Education/Credentials
Graduated from Private Technical School in 1975.Presently an HVAC/Refrigeration Contractor. Have Unlimited Heating/Piping and Cooling Contractor License.Limited Sheetmetal Contractors License.NATE Certifield. York Certifield Heat Pumps in 1981. Served 33 years combination Active Duty Air Force , Air Force Reserves and Air National Guard in the HVAC/Refrigeration Shop.Starting as a Apprentice then Technician troubleshooting/installing HVAC/Refrigeration Equiptment Worldwide. Retiring in 2003 as a Mechanical Superintendent.

Awards and Honors
I got many atta boy awards over the years

   

You are here:  Experts > Home/Garden > Home Appliances > Heating, Air Conditioning, Fridge, HVAC

Questions Answered By Expert  Joe 
In Category  Heating, Air Conditioning, Fridge, HVAC

SubjectDate Asked

heating11/20/2009
  Q: I HAVE A 1993 RHEEM AC AND HEATING package UNIT I REPLACED THE FAN LIMIT switch BUT THE UNIT TURNS ...
  A: Carlos, What motor are you talking about???????? I was referring to the ventor motor ( removes ...
Weil McLain EG35 Boiler - transformer burning out11/20/2009
  Q: The boiler was not powering on and I suspected the transformer which was white-rodgers s84a-85 ...
  A: Raj, If your running only heat , you do not need Y and G at the t-stat hooked up. remove and tape ...
heating11/20/2009
  Q: I HAVE A 1993 RHEEM AC AND HEATING package UNIT I REPLACED THE FAN LIMIT switch BUT THE UNIT TURNS ...
  A: Carlos, I would determine that the centrifugal switch is not stuck in the closed position first. ...
Weil McLain EG35 Boiler - transformer burning out11/19/2009
  Q: The boiler was not powering on and I suspected the transformer which was white-rodgers s84a-85 ...
  A: Raj, Just disconnect the low voltage wires from the t-stat at the boiler leave the transformer ...
Weil McLain EG35 Boiler - transformer burning out11/19/2009
  Q: The boiler was not powering on and I suspected the transformer which was white-rodgers s84a-85 ...
  A: Raj, A transformer is a transformer, if your boiler is 220 volt you may be hooking it up to a 208 ...
Condensers & air handlers11/18/2009
  Q: we are replacing our central a/c systems and looking at Rheem condenser 14AJL series vs. 14AJM ...
  A: Roman, Basically if you want the $1500.00 tax credit you would need to go with the 14AJM as you ...
Heat pump Pressures11/18/2009
  Q: How do you determine if the compressor valves are bad or the reversing valve is not switching 100% ...
  A: Hear is an answer I gave to two other persons with similar problems as you Questioner: John ...
thermostat wiring problem11/17/2009
  Q: I have a 9520 Robertshaw thermostat with a York unit Model # E1RC030S06D. I also have a 2 stage ...
  A: Jordon, See , in the excitement you forgot to write everything down.....Remove access panel from ...
furnace gas valve keeps shutting itself off (PART 2)11/16/2009
  Q: If you recall my previous post on 11/9 asking you about the gas vale keeps turning it off. I was ...
  A: Jak, buy new one on line and be done with it many companies sell OEM parts. What does the wiring ...
A/C11/13/2009
  Q: I had a new 4 ton A/C installed in my 1400 sq. ft. shotgun style house. The installer put the ...
  A: Julie, Four tons seems large for a 1400 square ft. house, you can have the outdoor unit pretty much ...
blower11/11/2009
  Q: Joe I have a split heatpump with heat strip every time I turn off the a/c or heat at the t'stat the ...
  A: Philip, To check for ground you need to set meter to ohm and pull all the motor wires off of any ...
blower11/11/2009
  Q: Joe I have a split heatpump with heat strip every time I turn off the a/c or heat at the t'stat the ...
  A: Phillip, Usually pulling the wire off the sequencer stops the electric heat and blower.My first ...
AC Unit.... what to do???11/10/2009
  Q: I'm very confused about a problem with my outside AC Unit and would be really grateful to hear your ...
  A: Juliet, If the $300.00-$350.00 includes labor to install it, plus you get a one year warranty on ...
AC compressor and furnace ton ratings11/9/2009
  Q: I'm in the process of replacing my 22-year old Lennox split system Central Air Conditioner with gas ...
  A: Harvey, If you have no rebate normally you would install the same size indoor coil to outdoor ...
furnace gas valve keeps shutting itself off11/9/2009
  Q: I have read your post on a similar issue I have. Your post has the subject "furnace keeps goes on ...
  A: Jak, There are literally hundreds of models out there ,Pretty much all work a little different from ...
AC compressor and furnace ton ratings11/8/2009
  Q: I'm in the process of replacing my 22-year old Lennox split system Central Air Conditioner with gas ...
  A: Harvey, The furnaces are rated to accommodate up to a certain tonnage coil.In order to qualify for ...
ac and furnace blower11/7/2009
  Q: i have a nordyne heating furnace and the blower motor continue to run in off position or auto the ...
  A: Martha, you don't say how old unit is.One possibility is that the fan relay contacts point welded ...
armstrong gaspack11/6/2009
  Q: I HAVE AN 80% package unit that when turned to heat combustion air motor comes on pressure switch ...
  A: Lisa, The only thing I can think of is possible your gas pressure is not correct. 3.5" for natural ...
Heat Pump defrosting often11/5/2009
  Q: Joe, I have a two story 2300 sq ft home on a slab in central Indiana. Split Bryant heat pump ...
  A: Brett, Should not be initiating a defrost every 5 minutes, on the board of the outside unit The ...
Honeywell Mini zone EMM 311/4/2009
  Q: Residential EMM3 mini zone issue - I have 3 zones, all work normally most of the time. Zone 2 will ...
  A: Don, Found this Question DEAR SIR I HAD NEW FURNACE WITH EMM-3.SOMETIME THE RED LIGHT FROM EMM-3 ...
furnace gas valve keeps shutting itself off11/2/2009
  Q: I have read your post on a similar issue I have. Your post has the subject "furnace keeps goes on ...
  A: Jak, look at the wiring diagram ,usually attached to the inside of the blower door. usually ...
furnace gas valve keeps shutting itself off11/2/2009
  Q: I have read your post on a similar issue I have. Your post has the subject "furnace keeps goes on ...
  A: Jak, you don't mention if the main gas valve relights again or if it shuts down and stays off ?? ...
Heil gas furnace blows cold air continuously11/1/2009
  Q: I have a natural gas furnace made by Heil. The model number is NTC6075FBA1. The serial number is ...
  A: Alex, Pilot light on ,next sequence is the flame sensor senses the pilot light and opens the main ...
Goodman AR3210/30/2009
  Q: I have a Goodman AR32 that was installed 3 years ago. The Coil has failed. Leaks. The system had a 2 ...
  A: Stephen, Lets see you want to stuff a 2.5 ton coil inside a 2 ton air handler and match to a 3 ton ...
GE Profile Water Dispenser/Cooler10/27/2009
  Q: I have recently purchased a GE Profile Water Dispense. The one with the three temperature options ...
  A: Jefferey, You would need to find the wiring diagram of the unit, may need to remove plastic outer ...
AIR RETURN10/26/2009
  Q: I was wondering if it would be okay to add another cold air return to my heat pump system. ...
  A: Michelle, you could install another return ,keeping in mind a return duct is sized to the existing ...
Line Set Length10/25/2009
  Q: Is it possible to add length to a line set using soft copper tubing or would I have to purchase an ...
  A: Mike , if the tubing is rated for AC/R duty and it's clean on the inside you can add to system.You ...
Trane A/C leak10/25/2009
  Q: Our THE048C140F4 A/C sits on a plywood deck above an insulated plenum with 2 large return vent ...
  A: Jay, You didn't read my answer about the 1/2" round hole on older Trane units..More I think about ...
Trane A/C leak10/24/2009
  Q: Our THE048C140F4 A/C sits on a plywood deck above an insulated plenum with 2 large return vent ...
  A: Jay, When was the last time you flushed out your drain line ,usually sediment fills the bottom of ...
new gas furnace10/23/2009
  Q: I have to get a new gas (steam) furnace, the old one leaks.its about 20-25 years old. two ...
  A: Aron, I'm not aware that there is a steam furnace a steam boiler yes.One contractor says stick with ...
low voltage wire10/22/2009
  Q: I need to twin two furnaces together with a single evap coil and cond. Would like to know the proper ...
  A: John, Low voltage is 24 volt ac, make sure evap. coil goes downstream of furnace heat exchangers ...
restriction heat pump10/22/2009
  Q: Have a carrier 3 ton heatpump with a restriction. Can the indoor txv cause a vacuum and improper ...
  A: Mike, When unit is in heat mode RV valve is deenergized, so pulling the wire off of the solenoid ...
inverter10/20/2009
  Q: I have a small print shop of 12,00m2; there is no heating in it. I bought an inverter air condition ...
  A: Mufid, Did you do a heat loss heat gain calculation on your building. To me it sounds like your ...
Heating Unit will not heat properly10/19/2009
  Q: We had a 2 ton unit and then installed a new 3 ton unit. The air conditioner works GREAT but the ...
  A: Donna, You may have the blower fan set to high a speed ,the blower fan are multi speed such as low ...
Central air conditioning troubleshoot10/17/2009
  Q: I have a 3 year old American Standard unit. I tried to turn it on last week and only the inside ...
  A: Cathy, Being only three years old and you having a service contract already, it's probably ...
Central air conditioning troubleshoot10/16/2009
  Q: I have a 3 year old American Standard unit. I tried to turn it on last week and only the inside ...
  A: Cathy, two things ,it's either the low voltage circuit ( 24 volt ) or the high ( 220 volt ) You ...
rite temp thermostat10/15/2009
  Q: We just replaced our honeywell with a rite temp thermostat to opearate the heat (gas). There were ...
  A: Sabrina, what happens if you rehook up your old stat ? Same thing? Also while unit is running remove ...
central air heating10/14/2009
  Q: my central air thermostat has a digital readout screen , but as of now there is no readout and also ...
  A: E, Don't know what light your referring to,Fan runs but no heat ,probably a safety control tripped ...
Furnace not lighting.10/12/2009
  Q: Our furnace is not lighting. We called a local oil company and the person on call said it sounded ...
  A: Vanessa, You also may need a good cleaning, should check the adjustment of the electrodes. It's ...
Rudd gas furnace10/12/2009
  Q: is the gas burner supposed to stay lit as long as the t,stat is on or does it go on an off during a ...
  A: Doyle, Stays on as long as the stat is calling, if it is cycling off, chances are it's tripping on ...
Nordyne Furnace10/11/2009
  Q: My Nordyne g6rc stopped working. When I pulled the cover off I noticed that there was a flashing led ...
  A: Rick, look at the wiring diagram (usually found on the back side of the blower door. Probably a ...
Furnace not lighting.10/11/2009
  Q: Our furnace is not lighting. We called a local oil company and the person on call said it sounded ...
  A: Vanessa, no mention if your husband set the electrodes.There are specific distances apart ,in front ...
a/c unit10/10/2009
  Q: I cleaned out the condenser outside the house and then proceeded to clean the evaporator inside the ...
  A: Jaime, You don't say how you cleaned it, using water and being very careful not to get any water ...
furnace draft inducers10/9/2009
  Q: I have a rheem furance and the draft inducer on the unit has 2 cracks in it. What does this mean? Is ...
  A: Kathy, Without seeing the unit up close ,I would say they are stress hair line cracks due to age ...
Honeywell TH8320U10/7/2009
  Q: John, I have a Westinghouse forced air furnace (secondary heat source) and a Westinghouse heat pump ...
  A: Joel, Don't know what to tell you about your delay in heating,except try calling Honeywell they ...
Furnace won't complete start-up cycle10/7/2009
  Q: Have a Rheem gas furnace model # RDRA 12ERAJS. Furnace goes through start cycle but quits at the ...
  A: Charles, I was unable to find that model number listed , even doing a google search, ( RDRA ) ...
Trane xe90 blower motor10/6/2009
  Q: I have a trane xe 90 that the blower motor does not come on unless you give it a spin, the led on ...
  A: David, I would buy a new cap.cost around $12.00-$20.00 to check a existing cap. without using a ...
supplemental heat for reduced electricity cost10/3/2009
  Q: Joe, My house is an early 70's split level 3br with garage, total electric with ceiling heat. As you ...
  A: Mark, Yes electric is quite expensive,any of the three would work, LP would be less work as far as ...
Lennox Gas/Electric Starter10/2/2009
  Q: Hey there Joe, Winter is coming, and it's getting pretty chilly around my neighborhood. I tried ...
  A: Andrew, Do you get the spark ignition. Look at your wiring diagram to see all the safeties you ...
Residential versus manufactured AC10/1/2009
  Q: I own a double wide all electric manufactured home with overhead ducting. I would like to replace ...
  A: Tom, Central unit would need to be 16 Seer 13 EER, using ARI number to get the credit.Taking into ...
Wiring connection from HVAC to Thermostat & Outdoor Unit9/30/2009
  Q: I replaced the blower wheel but didnt mark the wires. The wiring diagram is partly damaged and I ...
  A: KK, What blower wheel are you talking about ? Also what does replacing a blower wheel have to do ...
Used heat exchanger9/29/2009
  Q: We have a 30 plus year old Rheem Package Unit (electric air and gas heat) that we are told has a ...
  A: Pat, Why not buy a new unit yourself, many web based companies sell new units google( HVAC Parts ...
HeatPumpHumidity9/28/2009
  Q: Our ac, trane heat pump, was working great until a company came over to do a yearly maintenance. ...
  A: Lisa, Possible your unit is not reducing the humidity due to now having the correct charge and ...
Car A/c - Honda Acura.9/27/2009
  Q: I really do not know who to meet on this. I have a car. This car was purchased as a fairly used. ...
  A: Mike, Sounds like it's a little low on charge, If your mechanically inclined ,you can buy a can ...
switching to Infinity control9/26/2009
  Q: I am wanting to switch from the Honeywell TH8000 thermostat to the Carrier Infinity Controller. I ...
  A: Larry, I am not familiar with the TH8000 to Infinity controller hook up.There are literally ...
poor heating in addition9/25/2009
  Q: I have afive year old system put in when we had our addition on our home.Since then the heating has ...
  A: Cory, You don't mention if you have balancing dampers in the supply/branch line to direct the air ...
R8184G Control9/24/2009
  Q: How to attach monitoring device. We want to attach a self dialer to send an alarm when the R8184 ...
  A: Dee, Certainly whatever monitor you buy should come with wiring instructions . Possibly you may ...
Central Air Replacement9/22/2009
  Q: Our air conditioning unit at our condo in Florida needs to be replaced. We are in Southwest ...
  A: Linda, In order to get the tax credit ,unit would need to be 16 SEER or higher and must be ...
Bryant9/20/2009
  Q: Changing filter, little "dohickey" hangs BELOW the filter. THINK it might be a temp sensor, not ...
  A: john, look at the wiring diagram it will tell you what part that is,I don't know what your ...
smelly split unit A/C9/20/2009
  Q: I live in a condo and the A/C that came with it is a split variety made by LG. The indoor went is ...
  A: H, Need to wash the air filter, usually ductless air filters are a fine plastic mesh, also wash ...
Bryant9/19/2009
  Q: Changing filter, little "dohickey" hangs BELOW the filter. THINK it might be a temp sensor, not ...
  A: John, Yea change it , go to google Hvac Parts, many web based company will sell your dohickey ...
Lennox G89/18/2009
  Q: I have an old Lennox G8 (What the front says) which is making some noise. Every time the fan ...
  A: Grant, I don't know what your referring too, a gas indoor unit? ,a split system A/C unit?. the ...
odor from vents9/16/2009
  Q: We have a 25-30 year old Carrier heat pump. The air handler is in our attic. About 2 months ago we ...
  A: Sheila, they did replace the replacement motor, possible they used a marginal rated motor and your ...
odor from vents9/16/2009
  Q: We have a 25-30 year old Carrier heat pump. The air handler is in our attic. About 2 months ago we ...
  A: Sheila, Where does your condensate drain line go to? outside or a vent pipe , if vent pipe and no ...
Higher SEER rating = more money saved9/15/2009
  Q: I had an old 4 Ton Bryant 10 SEER AC and heat pump. I replaced it with an 4 Ton American Standard ...
  A: Marvin, The only why to tell is to put an amp. probe on the compressor,indoor and outdoor fan motor ...
Higher SEER rating = more money saved9/15/2009
  Q: I had an old 4 Ton Bryant 10 SEER AC and heat pump. I replaced it with an 4 Ton American Standard ...
  A: Marvin, KWH referring to your electric heater ? Heaters haven't changed in decades as far as ...
Sprial Ducts9/14/2009
  Q: I'm installing spiral duct on a 7.5 ton air handler. Installing (2)16" round spiral ducts at ...
  A: Daryl, Why not go to goggle/yahoo and punch in duct design ,duct calculations ,there are many ...
Blower motor9/13/2009
  Q: Joe, my air condition unit outside is working, but the blower motor will not kick in. how do you go ...
  A: Rodney, No mention of age of equipment, if older unit chances are motor is bad,possible the run ...
gauge reading-ac unit -residential9/12/2009
  Q: What are the average high and low pressure readings for home ac with ambient outside temp of 80 ...
  A: Jim, Using temperature/pressure chart around 225 Psi high side . low side Aprox. 63-68 depending ...
Thermostat not working9/11/2009
  Q: I went home and noticed the thermostat was out...I purchased a new one from Home Depot..a Honeywell ...
  A: Jenny, If you feel you wired it correctly then chances are you do not have any 24 volt ac to the ...
Thermostat not working9/11/2009
  Q: I went home and noticed the thermostat was out...I purchased a new one from Home Depot..a Honeywell ...
  A: Jenny, Remove access panel on your indoor unit and wire accordingly, if you have a packaged outdoor ...
Hole in accumulator9/10/2009
  Q: The compressor on my Bryant Heat Pump model #661CJ048-C stopped working. HVAC tech found a hole in ...
  A: Manufactors warranty of their equipment vary, not sure what the parts and compressor warranty is on ...
de grating or rating a 4 ton air handler to 3 ton9/10/2009
  Q: I recently had a brand new 4 ton air handler installed in a residental apartment. Due to the air ...
  A: Ivy, I am not to sure what you are talking about a "valve or water limiting device" possible that ...
Hole in accumulator9/9/2009
  Q: The compressor on my Bryant Heat Pump model #661CJ048-C stopped working. HVAC tech found a hole in ...
  A: Joe, I don't know what to tell you, normally Manufactures would not wire tie firmly to the suction ...
Condensation coming from A/C Duct9/9/2009
  Q: My mother just bought a 50 year old house which is on a pier and beam foundation. We live in Texas ...
  A: Michael, From my experience the water dripping from the register is coming from hot exposed metal ( ...
Hole in accumulator9/9/2009
  Q: The compressor on my Bryant Heat Pump model #661CJ048-C stopped working. HVAC tech found a hole in ...
  A: Joe, Seen Manufactures use metal support for fan motors,including copper to run all types of wiring ...
air conditioner9/4/2009
  Q: I flooded my kitchen today by accidently leaving the faucet running. I belive some of the water went ...
  A: Jamie, Doubt water did any electrical damage. the duct work is isolated from the control circuit. ...
Seized(Stucked)Compressor9/3/2009
  Q: If three phase compressor Seized (Mechanically Stuck)most of them re-set at original running ...
  A: Nadeem, Single phase, use a large start capacitor match the voltage of the capacitor to the ...
Compressor Failure9/2/2009
  Q: What are the most common reasons of compressor failure in HVAC system.How low Voltage Effect of ...
  A: Nadeem, where is the wiring diagram from the unit?? For SINGLE PHASE system. The C is common and ...
comfortmaker ac8/30/2009
  Q: Where can I find the product information, owners manuels ect on my air conditioner? It is a ...
  A: Nanci, you probably have to call a Distributor in your area that handles that brand. You can go to ...
A/C8/29/2009
  Q: Ball park figure as to the cost to install a/c in a split level home, 1800 sq.ft. Heating is gas, ...
  A: Conrad, Hard to say, varies what part of the country you live in,Cost are higher in my state.Also ...
Compressor Failure8/27/2009
  Q: What are the most common reasons of compressor failure in HVAC system.How low Voltage Effect of ...
  A: Nadeem, The refrigerant coming back to the compressor helps cool the internal motor windings ...
13 sear condensor8/27/2009
  Q: just installed a new 13 sear condenser from a 13 year old condenser but has exsisting a coil. do i ...
  A: Thomas, Unit will still work with existing piston,certainly not as good as matched equipment, but ...
Compressor Failure8/26/2009
  Q: What are the most common reasons of compressor failure in HVAC system.How low Voltage Effect of ...
  A: Nadeem, If your compressor is seized, drawing high amperage, doubt you will be able to get ...
Central Air-Heat Pump8/23/2009
  Q: We have a Trane Heat Pump with our central air system. The inside unit is vented with a 3/4 inch PVC ...
  A: Ken, yes the PVC line ,if the PVC trap is not partially plugged and you feel that its draining ...
Central Air-Heat Pump8/23/2009
  Q: We have a Trane Heat Pump with our central air system. The inside unit is vented with a 3/4 inch PVC ...
  A: Ken, blow out your drain line, backflush it with a garden hose, remove evaporator access panel ...
airconditioners causing wet ceiling tiles8/22/2009
  Q: i work in a school system. we have a commercial air conditioner mounted in ceiling. it is sweating ...
  A: Dave, Probably the easiest to control the dripping would be to install a metal auxialry drain pan ...
Amibent Sensor8/21/2009
  Q: I have a York Heat Pump Model E1FB018S06a The unit would not pull in the coil to start. I removed ...
  A: Frank, The older York units used the ambient sensor to set at what OD temp. it would bring on the ...
a/c8/21/2009
  Q: I just replaced my fan motor on my a/c the last motor had the fan pulling air in now the new one is ...
  A: Bill, Blower motor ??? If you took the squirrel cage assembly ( blower wheel )out also to clean ...
McQuay EnerSaver Heat Pump compressor.8/20/2009
  Q: I recently started working in an apt. complex that has McQuay EnerSaver Packaged Terminal Air ...
  A: Bob, You didn't mention the operating pressures while they were running or amp. draw .What caused ...
Airi Conditioner Problem8/18/2009
  Q: My air conditioner stopped working because the capacitator (not sure how to spell it) broke (it was ...
  A: M, If your outdoor condensing unit is blowing cool air and your condenser fan is turning,chances ...
Airi Conditioner Problem8/18/2009
  Q: My air conditioner stopped working because the capacitator (not sure how to spell it) broke (it was ...
  A: M, are you asking why the capacitor bubbled? If so chances are your unit tried to start before the ...
Outside A/C unit, wires disconnected8/17/2009
  Q: Joe, while weed-eating today at a new home I pulled the wires loose from the unit outside. There are ...
  A: Mike, Looks like you have a 5 bundle wire using only the red and white.The green is probably a ...
Power Failure8/16/2009
  Q: The A/C was working till abt. 4pm we smell something burning in the air, then on the monitor it says ...
  A: Michelle, you don't say if the blower fan runs, if nothing is running your transformer may have ...
Replacing central ac unit8/14/2009
  Q: I live in southern NJ and am replacing a 10 seer York contractor grade central ac unit with a Trane ...
  A: Joe, Cost vary from states to states, you don't mention what they are doing.Location of indoor ...
a/c8/13/2009
  Q: I NEED YOUR EXPERTISE, i HAVE THE INSIDE UNIT THAT IS 2 YEARS OLD.THE OUTSIDE UNIT IS NOT EVEN A ...
  A: Mary, You don't mention if this is a complete new system including duct work ,or you replaced your ...
AIR RETURNS8/12/2009
  Q: My house is 1752 sq. ft 1 level. I am located Port St.Lucie Fl. My ac unit is a 4 ton ICP 6 yrs old. ...
  A: Shelly, You know the layout of your house better than anyone ( as far as what areas are warmer ...
blower fan inop on cool setting8/11/2009
  Q: Blower fan inop on cool,but works w/heat & continuous
  A: Jim, while in cool mode put voltage tester on fan relay ( blower ) if you don't have 24 volts ac ...
heat pump problem8/10/2009
  Q: I have a 5 ton Bryant heat pump outside with a Bryant air handler in my attic. Lately, the house ...
  A: John, Possible the blower motor is bad and shuts down ( internal overload )(You never mentioned the ...
AC unit8/9/2009
  Q: My house was just built 3 1/2 years ago and the unit inside the garage is overflowing with water ...
  A: Noel, Chances are your drain trap is plugged,you can try to backflush it with a garden hose at ...
trane xr118/8/2009
  Q: I have a Trane heat pump system that has quit working. The system is about five or six years old. ...
  A: Travis, lights dimming in house and unit not starting would be an indication of the compressor ...
Outside Aircondition8/7/2009
  Q: My aircondition is about 8yrs old it was blowing fine and it won't come on at all outside,but the ...
  A: Barry, Where is your blower outside?? Do you have a self contained unit or a split system with fan ...
A/C is barely cooling the air8/6/2009
  Q: I am hoping to get some advice on a problem I'm having with my AC. The entire HVAC system was ...
  A: jennifer, If the low side is low and the high side is normal, you may have a partial restriction in ...
Noise from A.C8/5/2009
  Q: I live in a house with central A.C a month ago the ac started to cool the house less, I checked the ...
  A: Ron, Have them check your blower motor wheel (squirrel cage ) to make sure the lobes are not caked ...
Noise from A.C8/5/2009
  Q: I live in a house with central A.C a month ago the ac started to cool the house less, I checked the ...
  A: Ron, Iced coil may be from your indoor coil inlet side being dirty, restricting air flow thru the ...
airease HVAC8/4/2009
  Q: 2001 approx install of; Armstong Tech 80 Ultra V 45647-001 and Airease evap coil C2E36A-1A (R22 or ...
  A: Bryan You would be unable to take advantage of the rebate ,as you state evaporator coil section ...
airease HVAC8/4/2009
  Q: 2001 approx install of; Armstong Tech 80 Ultra V 45647-001 and Airease evap coil C2E36A-1A (R22 or ...
  A: Bryan, Don't quite understand your question ,taking it you have a 80% furnace with either a cased ...
Trane XL1200 not cooling8/3/2009
  Q: I have a TRANE XL 1200 Super Efficiency Air it quit blowing cool air last evening and I also noticed ...
  A: Rob, In your first statement you only mentioned that the fan was running slowly.And you reset the ...
Trane XL1200 not cooling8/3/2009
  Q: I have a TRANE XL 1200 Super Efficiency Air it quit blowing cool air last evening and I also noticed ...
  A: Rob, no mention of age , but usually when a motor turns slowly it's an indication of ...
hvac air flow7/30/2009
  Q: I have been having air problems for a while now & was told it probably due to air flow. I only have ...
  A: Jennifer, You can have the system designed and buy the right equipment. one source would be ...
switching thermostate (heat pump)7/27/2009
  Q: I have heat pump on 2nd floor and current thermostat is Aprilaire 8346. I would like to replace it ...
  A: Vijay, First of all ,there are literally hundreds of t-stats model out.I don't pretend to know them ...
switching thermostate (heat pump)7/23/2009
  Q: I have heat pump on 2nd floor and current thermostat is Aprilaire 8346. I would like to replace it ...
  A: Vijay, The difference bewteen a packaged and split unit is a packaged is self contained ,has all ...
Hvac blower7/22/2009
  Q: First of all I am so thankful for your time. I have a Goodman system. The A/C unit was just replaced ...
  A: Michael, Goodmans website is goodmanmfg.com They have a "contact us" if you have any questions. ...
switching thermostate (heat pump)7/21/2009
  Q: I have heat pump on 2nd floor and current thermostat is Aprilaire 8346. I would like to replace it ...
  A: Vijay, wiring diagram is pretty straight forward that comes with your new stat.Does your new stat ...
A/C unit outside not blowing air7/19/2009
  Q: We have a 1997 heating/cooling system. One unit combined outside. It gets serviced every other year, ...
  A: Tracy, Probably a low voltage problem ( 24volt ) if you know electrical you can ohm out wires from ...
Life span for capacitors?7/18/2009
  Q: Woke up this morning to find the central air was not working (fan was blowing, but no cooling.) ...
  A: Elizabeth, Capacitors can last the life of the unit, many things affect the lfe,certainly number of ...
janitrol air conditioner7/17/2009
  Q: I have a janitrol central heat/air system in my house. My home was built in 1999. When I got up ...
  A: Felicia, Humming sounds would be the compressor contactor pulling in, so your low voltage 24 volt ...
Residential AC7/16/2009
  Q: Should I keep 2 different temperature settings for two-story home at night? i.e. higher setting on ...
  A: Pat, Judgement call on where to set your stats at night,What you suggest sounds good to me. 2nd ...
central air unit5/27/2009
  Q: if i shut the sir off and turn the fan on it works fine any help in regards to this would be much ...
  A: Ryan, double check your hookups at the t-stat to air handler to outdoor unit should be pretty basic ...
new unit5/11/2009
  Q: I have several bids for a new Central Air Unit using R22 and r410 .They did say that r22 unit will ...
  A: John, Compare cost of the two different refrigerant units , for the most part you will need to ...
water soaking my a/c filter5/7/2009
  Q: I have a Goodman system, 2 years old. Everything is new. We had to have some home repairs done and ...
  A: Michelle, How did your system work last year ? need to verify all supply registers are open as well ...
AC & htg system5/6/2009
  Q: I am really in a dilemma as to what kind of system to get. My old one - 1987 (4 ton) is a Trane (I ...
  A: Doris, The #6 wire to the air handler is if you decide to go with electric heat instead of a heat ...
coil freeze5/6/2009
  Q: 4 ton split hp.goodman 13 seer with txv. subcool 15f superheat 23f. high side 139psi low side 50psi ...
  A: Steve, Which coil are you referring to that's freezing indoor or out??. you do state you have a ...
AC & htg system5/5/2009
  Q: I am really in a dilemma as to what kind of system to get. My old one - 1987 (4 ton) is a Trane (I ...
  A: Doris, As a Contractor myself I don't quote ultra high Seer rated equipment unless the customer ...
Heating and cooling unit replacement5/1/2009
  Q: I have a 3200 square foot home. The upstairs heating and cooling unit is old and needs replacing. ...
  A: Dawn, Suggest you get several bids from reputable companies.You can go to BBB website to see if ...
HVAC - Fan runs but dampers stay closed4/30/2009
  Q: I sometimes want to run my fan to circulate air in the house when there is no call for heat or a/c. ...
  A: Rob, From my experience with zone dampers is that they are normally open when nothing is calling, ...
r 22, fixed orifice4/29/2009
  Q: my head pressure(when unit it turned on) rises to 350 then immediately drops to 250psi and it then ...
  A: Luis, Personally I would start from scratch and reclaim charge ,you can weight it and compare it ...
A/C4/28/2009
  Q: when i set my a/c to auto and put the temp, at 20 it comes on and cold air comes out but the a/c ...
  A: Tommy, To me it sounds like your stat is out of calibration or not level ( mercury type stat ) Also ...
Comfortmaker HVAC outside unit4/27/2009
  Q: Our Comfortmaker unit was installed in 2004 and I have had a sunshield suspended about 5 feet over ...
  A: Jon, If your referring to the condensor fan motor that should start when ever the compressor ...
AC in 2 story home can't keep up4/23/2009
  Q: We bought a 2 story home last year with 2 central air units, 1 for the main floor and basement and 1 ...
  A: Erin, Is your ductwork in a hot attic?, maybe your duct is not sealed correctly,and bringing in hot ...
copeland compressor 3 phase4/22/2009
  Q: what are the steps to add oil to a condensing unit compressor? what equipment is needed for the job? ...
  A: Because compressor is used you may want to check the compressor terminals to ground to make sure ...
copeland compressor 3 phase4/22/2009
  Q: what are the steps to add oil to a condensing unit compressor? what equipment is needed for the job? ...
  A: Jesus, If this compressor is a semi hermetic with a oil site glass ,you need an refrigeration type ...
Breaker Requirements4/21/2009
  Q: We just had a 5 ton unit installed (Day & Night). It has been running fine for about 1 month. ...
  A: Butch, you may have a too small a size breaker rating, reason for it tripping, it should clearly ...
Adding AC to my home4/20/2009
  Q: I want to thank you in advance for taking the time to review my question. I appreciate any advice ...
  A: Jason, I thought you said you were going to let someone else "weld the line set and charge up the ...
pavers4/20/2009
  Q: I have a rental home about 1100 square feet, rancher. I want to buy all the equipment and pay an ...
  A: Steve, Don't know what size unit your installing ,don't know if unit is a packaged or split ...
rudd furnace4/17/2009
  Q: my furnace in my attic blows air, but no heat. the polite light wont stay lit. is this a common ...
  A: Wayne, If you have a spark ignition type pilot, your pilot flame may be weak and not engulfing the ...
pilot lite won't ignite Ruud UGDA0 07EAUER4/16/2009
  Q: The unit starts up fine, blower is good, 12-15 seconds when the gas kicks in, the pilot won't lite, ...
  A: Mike, You should first concentrate on getting the pilot to light as that is the first step ...
Adding AC to my home4/15/2009
  Q: I want to thank you in advance for taking the time to review my question. I appreciate any advice ...
  A: Jason, Your heating unit is 70,000 BTU @ 95% efficient handles up to a 3 ton cased or uncased ...
replacement decision Trane vs American Standard4/14/2009
  Q: Our a/c system is "builder grade" 1997, not keeping up with our Houston needs, we're looking at ...
  A: Cathy, Looked briefly at both brands, the AM.Std. has three tier levels with the Contemporary ...
1987 Carrier Fan Motor Keeps Running4/13/2009
  Q: Natural Gas Furnace, Carrier 58SX. Problem just started recently. Fan motor will not shut off. ...
  A: You can try to adjust the resister to a lower setting to see if the fan stops.say 120 sec.or 60 sec. ...
1987 Carrier Fan Motor Keeps Running4/13/2009
  Q: Natural Gas Furnace, Carrier 58SX. Problem just started recently. Fan motor will not shut off. ...
  A: Loretta, Would need a voltage tester and know how to use one to really trouble shoot your unit.On ...
HVAC Furnace Ignitor FC007 Miller York FC035K 902661 remains on4/11/2009
  Q: This morning when we turned off the HVAC unit the fan kept going and the HVAC Furnace Ignitor FC007 ...
  A: Feraz, Disconnect the thermostat wires from the furnace terminal hook up and see if it sparks.If it ...
blower4/9/2009
  Q: My gas furnace kicks on fine and goes off but the blower fan keeps runnig until I un plug it,keeps ...
  A: Wayne, First thing to check would be the fan relay, possible N/O normally open contacts welded shut ...
HVAC Condenser Failure4/7/2009
  Q: I manage a shopping center which was constructed in 2004 - we have our HVAC units serviced every 6 ...
  A: Kelly Drossing, Many things will affect Compressor failure, Units not matched (indoor coil to ...
Heating and Air Conditioner by Frigidaire4/6/2009
  Q: I have a brand new Heating and Air Conditioner by Frigidaire when I put it on heat it stays on for a ...
  A: T'sha, When does your blower fan start? Does the burner shut down before fan starts? if so it may ...
Rheem split system4/3/2009
  Q: the heat goes on in a/c mode - does this mean that the control board need be replaced as I have ...
  A: Joe, I would bypass the thermostat and thermostat wire and at the indoor unit where the low voltage ...
Connecting common wire for heat pump4/1/2009
  Q: I am trying to connect common wire for my new thermostat. My wiring for the heat pump is y,g,w,r and ...
  A: Ken, not following you all the way,The low side of the transformer which supplies the 24 volt ac to ...
Rerouting lines3/31/2009
  Q: My ac compressor is outside the house.The evaporator is inside the garage.The supply and return ...
  A: Ozzie, From my experience if your unit is not a Heat Pump ( the large vapor line is the high ...
Rheem A/C will not come on, inside fan ok.3/30/2009
  Q: I have a Rheem A/C unit model RACC036JAS for my home. The outside unit will not come on compress ...
  A: Jason, A yearly check by a professional would have avoided this situation. On many Rheem A/C unit ...
Janitrol Gas Furnace A/C unit3/27/2009
  Q: I have a Janitrol Gas Furnace a/c unit that is approximately 18 years old. It is an upflow HEFF ...
  A: Bob, Being nearly 20 years old,first thing I would do is verify that your inlet side of your A/C ...
emergency heat comes on when air is on3/26/2009
  Q: I have a heat pump that is about 13 years old. Last year I started having problems. When I turn ...
  A: Wanda, You didn't tell me if you have a split system unit or a packaged unit or the location of ...
emergency heat comes on when air is on3/25/2009
  Q: I have a heat pump that is about 13 years old. Last year I started having problems. When I turn ...
  A: Wanda, Only need a competent A/C Service Tech. the low voltage wiring is only 24 volt. If the ...
emergency heat comes on when air is on3/24/2009
  Q: I have a heat pump that is about 13 years old. Last year I started having problems. When I turn ...
  A: Wanda, You may have a low voltage wiring issue,wrong stat,defective electric heat relay,etc. ...
furnace not working correctly3/23/2009
  Q: ,it blows cool air on heat setting with a one flash light. thank u for your time
  A: Dana, I don't know what One blinking light means on a American Standard furnace .There are ...
refrigirator not cold3/22/2009
  Q: I have a Frigidaire Pure Source Plus FRS26ZNH and over the last couple of days it just started ...
  A: Joe, The motor is that the compressor or a condenser fan motor your referring to. You would need to ...
bard tsf 803/21/2009
  Q: Jim, i have asked about this unit before here is some added info. furnace not firing gas valve ...
  A: John, If you suspect control board,or gas valve suggest buying one on line Goggle Hvac parts, many ...
Outside Heating Vent3/20/2009
  Q: My outside heating vent drips water, below the heating vent formed icicles below the vent. This is a ...
  A: Kai, Don't know what your referring to "outside heating vent" if you have a condensing furnace ...
Hvac3/19/2009
  Q: Just bouught a trailer with electric heat it hasent been used in 2 years because breakers kept ...
  A: Mark, Possible part of your heater element is bad. ( element is electrically open when ohm with ...
mobile home electric heat3/18/2009
  Q: central a/c works but electic heat does not. home 8 years old. fan blows but no heat... thanks
  A: Rev. Gerald, Possible bad heater element. ( element is electrically open when ohm with meter ) or ...
heat pump3/17/2009
  Q: is it likely that a 10 seer heat pump w/ electric emergency heat would cause a 2 person family ...
  A: T, Before you condemn the Electric Company , you may want to consider that to heat a 3000 sq. ft. ...
Ceiling Damage due to condensation3/17/2009
  Q: I am a Refrigeration Mechanic and have been called to a Job where the home owner runs his Daikin 16 ...
  A: Peter, I had a similar situation with my residence , mine was condensation dripping from my supply ...
furnace, please help3/16/2009
  Q: model 50e47-843 . im getting a yellow blinking light on it thats says improper polarity. so i ...
  A: David, Equipment may not be grounded or control module may not have a good ground. Look at wiring ...
Furnace some times does not start.3/6/2009
  Q: Furnace does not need to cycle on like it should some times, so as my wife says I need to go down to ...
  A: Jack, The literature you have may be the owners guide. need the install/troubleshooting ...
Heat Pump Starting Problem3/5/2009
  Q: I have a Tempstar TCH436AKA3, serial L023876685 heat pump with a MV12F1900A4 air handler. It is ...
  A: yes applies to scroll or reciprocating, also change the compressor capacitor.when changing ...
rheem package heatpump model rqnm-ao48jk.0153/5/2009
  Q: my question is i live in a doublewide home it is twelve years old and came with a coleman 4-ton ...
  A: Jimmy, First thing I would do is run your fan only and check the return air vs the supply air it ...
Armstrong Air Ultra 803/4/2009
  Q: My unit kicks on, the electric pilot light turns on, gas ignites, pilot light goes out, gas stops. ...
  A: Scott, Does your blower fan run ,if not, it is tripping off at high limit. No mention from you if ...
Heat Pump Starting Problem3/3/2009
  Q: I have a Tempstar TCH436AKA3, serial L023876685 heat pump with a MV12F1900A4 air handler. It is ...
  A: Bruce, Would need to flush system of any acidic oil, as this is your 2nd compressor or replace line ...
AHU No Heat But Fan3/2/2009
  Q: We have a small residential Grand Aire AHU in our condo (about 4 yrs old). The system should be ...
  A: Kate, pressure switch is located in conjuntion with the inducer/ventor motor. Either your inducer ...
Rheem Heat Pump - No heat3/1/2009
  Q: My a/c runs fine but when calling for heat, the indoor air handler starts fine but the outdoor ...
  A: Paul, All the residential A/C Heat Pumps i worked on use AC volts, you clearly state your meter is ...
Gas furnace condensate disposal2/28/2009
  Q: I'm a home improvement contractor (carpenter) who is helping my neighbor with a new HVAC ...
  A: Doug, As long as the dehumidifier and condensate drain from the A/C unit drains without a visible ...
Electrical schmatic for Rheem economizer2/27/2009
  Q: I'm a facilities manager for a 4 story office building. We have Rheem HVAC units on the roof and ...
  A: Al, You would have to contact a Rheem Distributor ( a HVAC Contractor who sells Rheem may help but ...
Furnace2/26/2009
  Q: I Have a Snyder General Propane furnace. The furnace is working, although there is no heat coming ...
  A: Barry, What does the "furnace is working although there is no heat coming out" mean? Does your ...
5 ton Lennox gas furnace2/26/2009
  Q: blower will activate when tstat calls for it. i am not getting 24 volts out to condensor contactor ...
  A: Kevin, No power to contactor ,would need to look at wiring diagram ,if you have a low pressure ...
Replacing older Heat Pump2/25/2009
  Q: I have an older split system Heat Pump and would like to replace with newer energy efficient. do you ...
  A: John, Recommend replacing both units,several reasons Manufacture brand may not warranty unit if ...
hot water2/24/2009
  Q: Question I had a repair man turn down my hot water because it was just to hot and now I have cold ...
  A: Chrissy, Reading your question I'm taking it that you get your domestic hot water from a boiler. He ...
rheem gas furnace 10 years old 80000 btu2/23/2009
  Q: The fan remains on for a long period of time after heat has stopped heating the house, thereby ...
  A: Rich, Look to see what type of fan control you have , many where the time delay on and time delay ...
split system A/C2/22/2009
  Q: after a power cut my split system airconditioner has never been the same. l have tried to turn the ...
  A: Sam, Sounds like you have a ductless split unit.Short of verifying that you have the correct ...
gas boiler2/21/2009
  Q: I replaced a leaking boiler pressure relief valve on my pennco gas fired boiler, now I hear water ...
  A: Vince, You should have a automatic water feeder on your system usually set to 12-15 psi mounted on ...
Trane XE 78 Intermittent Burner Shutoff2/20/2009
  Q: I have a Trane XE 78 natural gas furnace that is @17 years old that works in conjunction with a ...
  A: Craig, The below two paragraphs I found on the Internet They are not my wording. I have noticed ...
HVAC Heat Pump2/19/2009
  Q: I have an issue (I think I do anyway) with a Lennox Heat pump. The unit is providing heat and ...
  A: John, Great info to work with!,being only 1.5 years old ,chances are your outdoor unit fan motor is ...
Payne electric heat pump2/18/2009
  Q: We recently put on a 540 sq ft addition with 14' ceilings.The rest of the house is heated with an ...
  A: Jim, You don't mention if you have electric heat strip heaters in your air handler ,you do mention ...
Hi pressure reading (30psi) from boiler gauge.2/17/2009
  Q: I have an old Weil-McLain natural gas hot water boiler for the second floor apartment. It's probably ...
  A: Norvin, you can get the pressure down by opening the relief valve on the unit manually . Also you ...
a/c problem2/15/2009
  Q: I have a ruud energy star unit that is 11 months old. The thermostat works fine and when it click on ...
  A: Thomas, What do you have a packaged or split system, I clearly ask for that info on my write up. It ...
furnace problem2/14/2009
  Q: I have a Keeprite furnace DC90 Ultra High Efficiency, it is 9 years old, the problem start when i ...
  A: Aky, You don't mention if you have natural or propane,if you have propane possible there is a gas ...
goodman heater & a/c unit2/13/2009
  Q: I have a Goodman Model # GMS-911-55DXA SER#0603798537 ,I can't find any info regarding the warranty ...
  A: Joe, Pressure switch stuck in closed position ,they may tell you to spray contact cleaner or ...
Problem with my AC unit2/12/2009
  Q: the model # is B20-03-15c00001T its a sun dail it was working all fine then i turn the AC on the ...
  A: Phillip, Next time you buy a transformer ,buy on that has a built in overload,reset button on it. ...
Problem with my AC unit2/12/2009
  Q: the model # is B20-03-15c00001T its a sun dail it was working all fine then i turn the AC on the ...
  A: Phillip, If indoor fan works for heat but not cool ,you have some wiring issue in cool mode. Don't ...
Problem with my AC unit2/12/2009
  Q: the model # is B20-03-15c00001T its a sun dail it was working all fine then i turn the AC on the ...
  A: Phillip, What fan would that be that's not turning on in cooling , Condensor or the ...
furnace keeps goes on and off2/11/2009
  Q: My furnace and thermostat are about ten years old. The thermostat is a White Rodgers. After I turn ...
  A: Taking t-stat out of circuit by jumping wires to test unit operation eliminates one possible ...
furnace keeps goes on and off2/11/2009
  Q: My furnace and thermostat are about ten years old. The thermostat is a White Rodgers. After I turn ...
  A: Joe, possible going off at a high limit control before it gets a chance to satisfy.Not enough ...
Programmable thermostat installation2/10/2009
  Q: I am replacing a standard thermostat (FHP Manufacture, Simple comfort) with a Honeywell Focus Pro ...
  A: Jim, Are you sure the blower fan is not a delay now ( delay on delay off )on a call for heat or ...
a/c with heating add on2/9/2009
  Q: I have a 5 year old rudd a/c handler is the attic for the second floor without the factory installed ...
  A: Marc, All I know is electric heat is expensive. A typical refrigerator draws 3-6 amp. compare that ...
Payne-a/c & heating2/8/2009
  Q: we have a Payne A/C and single pump heating unit. This was already installed when we bought the ...
  A: Lisa, The unit wiring diagram should be plastered on the inside of the electrical access panel. ( ...
a/c with heating add on2/7/2009
  Q: I have a 5 year old rudd a/c handler is the attic for the second floor without the factory installed ...
  A: Marc, You should be able to add a heater element with no problem, use a Ruud/Rheem heater as it is ...
I believe I have a wiring issue2/6/2009
  Q: My unit is 1yr. old and I cant get the Heat to work then switch to AC. It has been this way since ...
  A: P, Don't know what type of heat you have ? ,don't know if it's a packaged unit or a split unit ? ...
Central Heat not working properly2/5/2009
  Q: When I turn on the heat in auto mode, it worked for 15-20 mins and then circuit breaker which is ...
  A: Bill, If you told me originally you have electric heat, i would have told you to check the heater ...
RHEEM CRITERION2/4/2009
  Q: Furnace cycles about 10-15 minutes, flames go out, vent loader shuts down, blower motor runs to cool ...
  A: Andy, you don't say "all the while still calling for heat at the stat. or the stat satisfies " I ...
Heating Fan2/3/2009
  Q: I have Trane auto heating system, when I set target at 72F, the thermostat cut off at 72F but the ...
  A: Sam, Fan at t-stat set to " on " position instead of auto. fan relay not deenergizing ( 24 volt ) ...
RUUD Hot air oil furnace blower stays on1/30/2009
  Q: I have a 1990 Ruud Hot air oil fired furnace. The heat works but when the unit reaches temperature ...
  A: Mark, Should not be to difficult to find fan relay, trace the wires from the blower motor back to ...
outdoor condensor fan1/29/2009
  Q: I replaced the capacitor and the relay today on our unit outside due to the relay sticking and the ...
  A: Melissa, Need to match capacitor MFD and voltage to fan motor and be wired correctly. If you ...
heat1/27/2009
  Q: "Currently my heater is blinking 2/3 which indicates that the "low or high heat pressure switch did ...
  A: Quentin, Is the reference referring to the air pressure switch of the inducer/ventor motot? if so ...
Heat Pump Occasional Problem1/26/2009
  Q: I have a 4 ton Carrier 38YRA heat pump that is about 9 years old. It has an intermittent problem ...
  A: Richard, 1st. question, Compressor holds off for a few minutes, could be several reasons You ...
Heat Pump outside fan turns on and off several times1/25/2009
  Q: Our Carrier Heat Pump was installed over a year ago specifically to heat and cool our finished ...
  A: Rocco, In one sentence you state outdoor unit is cycling,next line outdoor fan ? If the compressor ...
heat exchanger freezing1/24/2009
  Q: i have a Heat Controller 2 ton geothermal/watersource heat pump less than 3 years old. it was ...
  A: Bill, I would look at possible low on charge Possible restriction ( refrigerant side ) Filter ...
Heat pump/ EM Heat1/23/2009
  Q: I have a Coleman/Evcon heat pump that is about 10 Yrs Old. Starting about 2 weeks ago when it got ...
  A: Nikam, Reason for no wire hooked up to E terminal could be that the wire bundle they ran to the ...
trane ae1000 heat pump1/22/2009
  Q: have the trane unit indoor/outdoor heat pump, noticed it was making a thumping or dull popping ...
  A: John, What does blow the condensor mean,meaning the outdoor fan motor ? if so maybe when he changed ...
coleman furnace blower connection1/21/2009
  Q: I have a intertherm?? furnace which needs a blower. I have a coleman 3500-690 blower. Can you ...
  A: Steve, According to you you say you have a variable speed, My experience for a variable speed to ...
coleman furnace blower connection1/20/2009
  Q: I have a intertherm?? furnace which needs a blower. I have a coleman 3500-690 blower. Can you ...
  A: Steve, What does the wiring diagram on an inside panel of the Intertherm ( Nordyne Brand ) and the ...
HEAT PUMP/FREON1/20/2009
  Q: I live in Az and I have a heat pump on our ac/htg unit in a rental (condo)we own. We had a Freon ...
  A: Jim, The more correct wording would be refrigerant ( same thing thou )Freon is a registered ...
Hum sound on AC1/19/2009
  Q: Maybe an easy question for you. My compressor (3 ton) on my AC hums when the fan shuts off. When the ...
  A: John, Do you have a packaged unit? or split? What fan are you referring to ,blower or condensor? ...
HEATER BLOWS COLD AIR1/18/2009
  Q: 4 YEAR OLD AC/HEAT PUMP IS BLOWING COOL AIE. TEMP INSIDE OF HOUSE IS 59 DEGREES OUTSIDE ITS 30 ...
  A: Steve, The fuse(s) your taking out is that for the electric heaters, if so you would need to ...
A/C & heater, original with 20 yr old house1/17/2009
  Q: What is expected life of a/c & furnace system? Can you recommend manufactors with good reliability? ...
  A: Edwina, I don't personally recommend one brand over another .One thing I look at is warranty, All ...
eubanks heating unit1/16/2009
  Q: I am working on a eubanks heating and a/c unit that fits in front of construction trailers electric ...
  A: Michael, Unable to find much info on Eubanks states that it was a Texas Manufacture of cooling ...
water in ducts and indoor unit1/15/2009
  Q: I have a 4 yr old 18 seer 5 ton American Standard with a heat pump with a variable speed fan. It is ...
  A: If you have supply register(s) in the bathroom(s)or near by certainly when taking a hot shower ...
water in ducts and indoor unit1/15/2009
  Q: I have a 4 yr old 18 seer 5 ton American Standard with a heat pump with a variable speed fan. It is ...
  A: Tracey, I had same problem years ago with my unit ( air handler in attic ) New England Area. ...
Heat Pump Performance Highly Variable1/14/2009
  Q: I have a two-zone Trane XL90 heat pump system with an air handler in the attic in my 1940s Virginia ...
  A: Don, As far as fan not running on fan "ON" position ( upstairs unit ) I would not worry to much ...
Heat Pump Performance Highly Variable1/13/2009
  Q: I have a two-zone Trane XL90 heat pump system with an air handler in the attic in my 1940s Virginia ...
  A: Don, OK I'm taking it that you have two separate Heat Pumps and not one unit with two ...
H1 H21/12/2009
  Q: Joe Have a 1 year old 2.5 Ton Goodman Package unit and Goodman manual thermostat just had the ...
  A: Jim, Explains alot, your heat pump is first stage ,energizing O terminal - reversing valve and Y ...
H1 H21/12/2009
  Q: Joe Have a 1 year old 2.5 Ton Goodman Package unit and Goodman manual thermostat just had the ...
  A: Jim, No mention if you have a straight A/C unit only, and an A/C & heat stat and installing ...
Trane heat and air unit1/11/2009
  Q: I have a Trane heat and air unit. When I am outside and the fan is not running you can hear a ...
  A: Kathy, I don't know exactly what type of heat you have from your description.If you have a gas ...
mitsubishi ductless1/10/2009
  Q: I have a mitsubishi ductless system at work. Unit will only run for about 2-5 minutes before it ...
  A: Matt, Not that hard to check for a plugged orifice , pistons usually just passed the liquid line ...
commercial ac1/8/2009
  Q: I was wondering if you could tell me what I need to do to jump start a commercial ac unit from on ...
  A: Louie, To observe operation of a RTU being right there. Find low voltage terminal strip hookup and ...
Heating ducts1/7/2009
  Q: I am in a new construction home and find my furnace running constantly. I only keep the temp at 68 ...
  A: Natalie, If you have metal ducts,it's possible you have insulation on the inside of the duct. It's ...
Comfort heat pump1/6/2009
  Q: The electric was turned off for this house for about 1 1/2 years and turned on for the first time ...
  A: John, Being off for 1.5 years possible you may have lost the refrigerant charge and the low ...
Rheem Furnace won't start1/4/2009
  Q: i have a rheem electric ignition furnace model RGDD-06NC-ER. It's 15 years old and it worked well ...
  A: Tom, Looked at other sites says you have a glow coil igniter and not a spark ignitor. What is the ...
lennox question1/3/2009
  Q: Happy new year. I have a few questions. We have a gas lennox model GCS20RV installed in 1994. It ...
  A: April, looked briefly at your unit on line.www.hvac-direct.com/pdf_files/service/0110a.pdf gives a ...
New Trane Heat Pump not defrosting1/2/2009
  Q: I have a new Trane heat pump that will not defrost. Dealer has changed defrost board, and at least ...
  A: Phil, First off snow like ice is normal , heavy thick solid ice on both sides of the outdoor coil ...
HVac design1/1/2009
  Q: Can you tell me Sir in 1) What are different type of Duct Layouts 2) How to design Ducts (suggest ...
  A: Sudesh, Unicosystems.com is one type of duct system. They use high velocity air threw there duct ...
Wind noise at registers12/31/2008
  Q: several years ago I got a forced air HVAC system (heat pump) installed including ducts which the ...
  A: Denis, Air takes the path of least resistance,meaning you need to install balancing dampers in your ...
Heat Pumps12/24/2008
  Q: How can i tell if i have a bad reversing valve or compressor issues or check valves. The head ...
  A: John, Here is an answer I gave to another person that had a similar issue. Reversing valves ( RV ) ...
HEATER WONT WORK....12/23/2008
  Q: My heater wont work. We turn on the switch at the bottom it turns red and stays red and it does not ...
  A: Lilia, First off, GAMA CAT 1 is not a name of a heater brand it stands for Gas Appliance ...
AIR FILTER IS WET12/22/2008
  Q: I WAS REPLACING THE AIR FILTER IN MY LENNOX ELITE SERIES AIR HANDLER (MODEL cb29m-51-IP)AND NOTICED ...
  A: Pat, Briefly looked up your Air Handler,your air filter is down stream of the indoor coil it's ...
Furnace Question12/21/2008
  Q: When I turn on the heat, I can hear the furnace turn on in the basement. After a few minutes, it ...
  A: Sheila, Sounds like the blower motor is not running, On the t-stat put fan selector switch to "on" ...
Carrier Weathermaker SX heat exchanger 15 year old12/20/2008
  Q: Carrier Weathermaker SX furnace locks out few times a week mostly at night, had the trap cleaned ...
  A: Scott, I seen you asked this questions at another forum. The write up was exactly the same.Heat ...
Furnace Installation extras12/18/2008
  Q: Live in the Dallas-Ft Worth area and the old furnace died (circa 1986)and we're getting a Fedders ...
  A: Dave, You didn't mention what type of vent pipe they are installing - single wall which is MINIMAL ...
Forced air heater12/17/2008
  Q: I have a gas forced air heating system. It goes through its regular cycle to bring house temp up and ...
  A: Larry, No mention of age of unit, older furnaces used a bi-metal(looks like a curly piggie tail ) ...
carrier 58dhb07512/15/2008
  Q: ventor motor comes on, pilot lites,burners come on, supply fan comes on, about 5 min. later burners ...
  A: Cheryl, If main burner shuts off after 5 minutes ( no mention on how soon the main burner relights ...
heat pump thermostat12/14/2008
  Q: I had a power outage in my house today. Not sure how long it lasted, but I called it in to the power ...
  A: Suzanne, There are hundreds of thermostat models out there, I don't pretend to know anywhere near ...
Heat Coils12/12/2008
  Q: I have a question concerning the heating coils in my electric furnace. When the tech. installed the ...
  A: brandon, Heating coils come in anywhere from 3 KW to 30 KW ( kilo watt )for most residential ...
heating a garage12/10/2008
  Q: I am not sure if I am in the proper section of this forum for this question...but here goes. I have ...
  A: Cathy, Don't know what type of heat you have, oil or gas.If you have gas and plan on turning the ...
Robertshaw 9520 thermostat12/9/2008
  Q: I went away for a week & when I returned there was nothing on the thermostat's display screen. It ...
  A: Linda, A thermostat USUALLY has two parts, a subbase, which is mounted on the wall first usually ...
Robertshaw 9520 thermostat12/7/2008
  Q: I went away for a week & when I returned there was nothing on the thermostat's display screen. It ...
  A: Linda, Need to check to see if you have 24 volt ac at terminal R and C at the subbase of the stat. ...
Westinghouse Heat Pump Compressor Noise12/5/2008
  Q: I have a Westinghouse 3 ton heat pump, 2 months old that the scroll type compressor is making a very ...
  A: Tom, You should be asking the Installing Contractor about your concern, you have a labor ...
heat pump - emergency or auxillary heat12/4/2008
  Q: I'm buying (trying) my first house. It is all electric with a heat pump. I had a home inspection ...
  A: Shauna, Depending on where you live ( Southern part ) Possible you may only be using Electric strip ...
trane heat pump unit12/3/2008
  Q: mod#sphc-6ioh-302-a serial# 09g-16492 it wont heat on pump side what should i check/clean, whats the ...
  A: Sean, Dude your question is way vague.Pressures depend on outdoor temperature, and indoor ...
water from air outlet(indoor side)12/2/2008
  Q: I have a GE window air conditioner for 2 years now. It has had an issue since I had purchased it. ...
  A: shrutesh, Don't know what to tell you, maybe it's a design flaw with that model, or critical ...
lenox furnace12/1/2008
  Q: my son has a fairley new lenox gas furnace,model # G24M3/4-100A-11 se # 6388L03556 last year it ...
  A: Ike, I don't know every brands what the blinking lights mean, each Manufactures blinking light is ...
Ground source heat pump11/29/2008
  Q: How do I do an acid wash of primary and secondary heat exchanger. This is a 1.5 ton unit, and the ...
  A: Aubrey, Not 100 % sure without looking at system, I would say disconnect the inlet and outlet water ...
Miller Heat Pump very cold air in winter11/26/2008
  Q: Miller heat pump 4 years old. Had to use emergency heat because thermostat set at 75 house ...
  A: Bernadette, There may be a high pressure switch reset button some where on the outdoor unit. May ...
Return Air efficiency11/24/2008
  Q: I, myself, recently install a new high efficiency heat pump with a gas high efficiency backup ...
  A: Jim, As far as I know they still make zone dampers on the supply registers itself , but that is ...
Heat Pump11/23/2008
  Q: What size wire and breaker do I need to run for 3.5 ton unit> (Out side unit)
  A: Ernest, As far as the breaker size it will clearly state the Maximum HVAC type on the data plate on ...
Super S Heat Exchanger11/21/2008
  Q: I have a Carrier WeatherMaker 8000 purchased in '98. A repair man has informed me (and shown me ...
  A: Kurt, Don't know what you mean by broken coils except for maybe braces ( which is somewhat normal ...
heat pump:blower fan won't stay on11/20/2008
  Q: I have an approx. 10yr old Janitrol heat pump. The system comes on normally but after about 15 min. ...
  A: David, Need to put your hand on the blower motor after the 15 minutes, it should be warm to the ...
Intertherm 90,000 btu heater11/20/2008
  Q: I have a problem with my heating system. It is about 10 years old and has had the ignitor, ...
  A: Dennis, Did they check the gas pressure at the valve?? How was the system running before you ...
Century gas (propane) furnace11/18/2008
  Q: I have a Century reclaimer 90 high effi.furnace it seems to only operate properly with the air ...
  A: Tom, Your write up is vague, need more detail. What does it do with the filter in place?? blower ...
york heat pump11/14/2008
  Q: When I turn on my heat pump the unit does not turn on, I hear some clicking sounds coming from it ...
  A: Art, Clicking sound probably would be your compressor contactor energizing on a call for ...
Gas valve has 24 v and igniter is clicking, but no pilot or mv flame11/13/2008
  Q: I have a gas furnace with a Honeywell intermittent model S8 600H pilot ignition system. This year my ...
  A: Jim, FIRST thing to do is purge the gas line ,quite possible you have air in there. crack the ...
Black Filter11/12/2008
  Q: I went to change my filter tonight and for the first time it was black. it has never been black ...
  A: Trey, If your air filter is in a furnace ,you could try to put another filter ( attach it )on your ...
Trane Heat Pump11/11/2008
  Q: I have a 3 ton Trane Heat Pump, around 4 yrs old. I just started running the heat pump lately, ...
  A: Rich, When you check the pressures,what was the pressures when you were running at 7 amps. vs 11-12 ...
Gas Furnace11/9/2008
  Q: I have a Bryant Gas furnace that is approx. 14 years old. The standing pilot continues to go out ...
  A: John, Check pilot orifice to make sure it's not partially plugged, The orifice is quite small, blow ...
problem with Ameican Std furnace11/8/2008
  Q: I have a 3 1/2 yr old American Std Freedom 90 single stage furnace that is acting up ...
  A: Jim, The fan is on a time delay ,so as long as it's calling for heat it will start after a ...
GMNT 100-4B Goodman furnace11/8/2008
  Q: Will not ignite and had worked fine until today. Circuit panel blinks red with intervals of one. I ...
  A: Wayne, look at wiring diagram on inside of a panel.Did not find GMNT 100 series on web site . Look ...
leak at elbow area of pvc pipe coming from heater11/7/2008
  Q: First, why is there condensation in a forced air heater--with no air conditioning hooked up? We ...
  A: Dave, Moisture is a by product of combustion ,so they say. Guessing the large PVC pipe is 2" for ...
Holly forced-air heating fan stays on11/6/2008
  Q: I have a Holly brand forced-air heater in a closet-type space. My thermostat works fine, as the ...
  A: Andy, From my experience "Summer Switches " bypass the t-stat and starts the fan and the fan will ...
Rudd gas furnace10/29/2008
  Q: Started Rudd gas furnace for first time this year. Only 2 of the ports ignite. Cleaned and blew ...
  A: Todd, No mention if propane or natural, would need to check gas pressure at main gas ...
20 yr old gas furnace10/29/2008
  Q: Have a 20 yr old gas furnace, and the pilot light keeps going out! I replaced the thermocouple, no ...
  A: Don, If you have a "standing pilot" ( stays on all the time )could very well be the main gas valve. ...
Forced Air Oil Furnace Over Temp10/20/2008
  Q: Greetings Craig! I have a 20+ year old Janitrol/Goodman/Ducane/Webster forced air, up-draft, oil ...
  A: Brian, Anytime a unit goes off on high limit ,for me the first thing I check is for not enough air ...
HVAC Fan Problem10/19/2008
  Q: I have an Intertherm Central heating and cooling unit, made in 1995. In heat mode, the fan comes on ...
  A: Terry, I would look at what brings on the fan in heat mode they use a time delay relay that will ...
Air Handler10/15/2008
  Q: We are having a new Carrier 3 Ton 13 Seer Air Handler installed. What other services (i.e. flush ...
  A: Beth, No mention where the Air Handler is being installed, if in attic ,highly recommend an ...
Electric Heat stages10/14/2008
  Q: If I have a variable speed electric blower, a heat coil, and a multi-stage T-stat. What is the ...
  A: Don, Staged heat is usually a heat pump being the first stage and if it cannot handle the load a ...
Need Help Trane models10/12/2008
  Q: I need to replace my central Heating & Air unit. I had two estimates both are in the same price ...
  A: Judy, Looked briefly at Trane website on those models, both appear to be 80 + efficient range, ...
Adding second tank for fuel oil furnace10/12/2008
  Q: My husband bought a second 275 gallon tank for our daughter's fuel oil furnace. The original tank is ...
  A: Debbie, Living in New England and having two 275 gallon tanks in my basement. I have two separate ...
13 seer to 10 seer coil10/10/2008
  Q: I am in the process of taking estimates to replace my A/C unit in my home. It is a 10 seer ground ...
  A: Jo, In my opinion both units need to be replaced ( using a matched indoor unit to outdoor unit )to ...
new heaters and acond units10/8/2008
  Q: I am shopping around for a new heater and ac unit and have never heard of Gibson. I was wondering ...
  A: Jeff, Gibson been around over 60 years and is under the Nordyne Manufactory Company along with ...
Armstrong Ultra 80 won't ignite10/8/2008
  Q: I’ve got an Armstrong furnace that won’t go past the pilot ignition stage. What it does when I call ...
  A: Joe, Look at wiring diagram on unit possible a roll out switch is open (if equipt.),would be a ...
Outside unit not running like it should10/5/2008
  Q: My Coleman EB15b Heat pump has not been running right. It will run during the day and cool just ...
  A: David, Doubt one capacitor is causing all your problems more like incorrect wiring or low voltage ...
AC runs 1hr+ to cool down 1 degree9/21/2008
  Q: Had a TempStar 3 ton 13 seer installed in my 1500 SF mobile home.They replaced my duct work at the ...
  A: CD, Need to check the temperature difference between the supply grille and the return.Run only the ...
outside condenser9/21/2008
  Q: I recently lost power for about a week. The outside condenser unit turns on and off now since power ...
  A: Craig, I am assuming that the compressor and condensor fans start OK and your indoor fan starts ...
HARD START9/21/2008
  Q: I RECENTLY BOUGHT AND INSTALLED A GOODMAN 14 SEER 4 TON AC WHICH HAS A COPELAND SCROLL COMPRESSOR. ...
  A: David, As far as the correct charge goes, When you buy the equipment the total charge is shipped ...
a/c condenser fan replacement9/20/2008
  Q: would a three bladed fan make my 036jaz rudd condenser quieter? I'm r&r,ing the fan motor because ...
  A: David, Personally I would change the motor and capacitor and use the original blade first before ...
circuit board failure or not?9/17/2008
  Q: we have a problem with our gas central air unit not heating... called a repairman he told my wife (I ...
  A: Maurice, Google HVAC parts ,their are many stores that will sell to the public. Need model and ...
Heat Pump for cooling9/16/2008
  Q: My heat pump stopped going on and off yesterday and I hit the red pressure button and it came back ...
  A: George, Several things could be causing unit to trip on high pressure. Possible HPS is out of ...
Matching an evaporation to an a/c compressor9/16/2008
  Q: The 27 year old Dayton (now Grainger) residential 3 Ton air conditioner with an outside compressor, ...
  A: Paul, Tech. is correct in recommending replacing indoor coil along with a MATCHED outdoor unit. You ...
compressor problems?????9/14/2008
  Q: What would cause a compressor to operate with the conditions given below? Liquid line pressure is ...
  A: Scott, First check that the outdoor coil is clean , and has good air flow thru the condenser ...
Heat pump not heating well9/13/2008
  Q: I live in Canada and had a new 2 ton Lennox XP15 heat pump installed in June. Now that it's cooling ...
  A: Keith, No mention from you as far as to the return temperature,your return temperature has a great ...
Freon in a Goodman9/7/2008
  Q: How many pounds of freon should be considered normal in a 3 ton goodman heat pump system. I believe ...
  A: Roscoe, It should state the total charge on the outdoor unit data plate (includes the indoor unit ...
A/C fan, must spin manually to start9/7/2008
  Q: Now whenever I turn my home A/C on, I MUST go out and give the fan a slight push (with a stick or ...
  A: Curt, Did they replace the motor with an exact match. Correct amp.correct horsepower and Rpm and ...
INTERTHERM PAS036x A Coils8/16/2008
  Q: Where can I locate the above A coils? these coils are sitting on a furnace intertherm FEB 017h which ...
  A: Russ, Nordyne owns intertherm, you would need to call the manufacture to locate a distributor in ...
Bryant evaporator coils8/14/2008
  Q: On July 24, 2008 we replaced our outdoor R-22 compressor with a new Bryant legacy line puron ...
  A: Lorinalujan, The indoor unit is made for R22 refrigerant only not R410A.Unless he can proof that ...
Goodman gmpn 080-4 rev a8/13/2008
  Q: I purchased the Goodman Gmpn 080-4 Furnace used and would like to know what size ac or heat pump ...
  A: Jon, Look at the install guide that comes with the unit ,it should tell you what is the maximum ...
Goodman condenser compressor8/12/2008
  Q: My son had a Goodman condenser replaced last November but the contractor did not run it (late in the ...
  A: Gary, Possible the contractor did not open the brass service valves on the unit remove the caps ...
Water leaking from Carrier indoor unit8/11/2008
  Q: I just returned from a week vacation, and to my surprise, our basement carpet was soaked with water. ...
  A: Matt, Plugged condensate drain would be my guess, They should be blown out occasionally or if you ...
central a/c8/11/2008
  Q: The cooling fan motor on my outside unit of my central a/c runs continuously. It is a 220v fan ...
  A: Joe, Yes,usually they run at a slower speed or even backwards, try ohming out motor to ground. ...
Cooling8/7/2008
  Q: I live in Florida It was in the 90's today. Around 6:30 pm I notice house seemed warm. The ...
  A: John, Clean the outdoor coil really well and check to make sure outdoor fan is rotating at full ...
Payne 2.5 ton pkg. heat pump8/2/2008
  Q: Installed unit on my home.Started unit in cool mode.Blower fan started, but compressor and condensor ...
  A: Mark, Doubt defrost relay is your source of problem ,double check your wiring .Remove t-stat to ...
Day & Night Model 398AAV7/28/2008
  Q: When I turn on my a/c (78 degrees) the unit turns on like normal. After about 3-5 minutes the ...
  A: Brian, You would need to start by putting system in A/C mode and using a voltage tester check to ...
age of AC unit7/23/2008
  Q: hOWdo I determine the age of my York condenser unit?
  A: Doug, Get model and serial number from data plate, usually the date is in the serial number.For ...
old Rheem system7/6/2008
  Q: I'm looking into whether the a/c side of an old (25 yrs. ?) Rheem system (outside package unit) ...
  A: Tab, You should not need much refrigerant as the pressures are not that off. ( it's not like the ...
Thermostat wireing7/6/2008
  Q: I am trying to replace my 15 year old thermostat with a digital thermostat. There are 4 wires( ...
  A: Jerry, G to green ( runs indoor fan ) Yellow to y1 but you state that is for heat pump application ...
Reversible Heat Pump6/30/2008
  Q: I am having the heat pump in my house replaced and I am a little unsure as to what to get. My ...
  A: Rob, As far as going with a 3.5 ton vs 4 ton you can buy the software and do a heat loss and heat ...
central air6/5/2008
  Q: I tried my ac today but it did nothing. I checked the circuit breaker and that is on. The only ...
  A: Keith, Furnace power needs to be on ,(Furnace can be broken yet A/C can work ) which feeds the ...
Condensate pumps on humidified furnace5/30/2008
  Q: I would like some advice on what to do with a failure problem we have with condensate pumps on our ...
  A: Evan, Need to buy a pump that is rated for the proper lift may need to install a check valve on ...
residential A/C compressor5/22/2008
  Q: I have a Copeland 2.5 ton compressor Model 2R28K1-PFV-230 that is 11 years old (it's in a Carrier ...
  A: Edwin, Residential compressors come as hermetically sealed with rubber plugs at the openings and ...
Snyder GENERAL RTU5/13/2008
  Q: SNYDER GENERAL RTU MOD R160ETYC 460V 3 PH I INSTALLED A NEW COMPRESSOR ON THIS UNIT .ORGINAL ...
  A: Phil, First thing to check with a 3 phase scroll is rotation, unlike a reciprocating compressor ...
Hunter Thermostat4/28/2008
  Q: I have a mobile home heat and ac unit and I am having a problem with the thermostat. I bought a new ...
  A: Mark, I don't see how you can possibly run A/C and Heat with ONLY a 2 wire thermostat. You need at ...
Transformers4/27/2008
  Q: I have a transformer that is bad on my heat pump. The numbers are.HTO1AW230E CLASS 2 CIN TRAN ...
  A: George, Most cases the transformer controls the outside unit also even thou the transformer is ...
weak air conditioning4/14/2008
  Q: I am renting a house in Los Angeles. The house has Central Air. It is a one story dwelling and all ...
  A: Scott, Having it serviced would be my only suggestions to make sure it's working at it's peak ...
loud buzzing coming from reversing valve4/13/2008
  Q: My YORK AC unit works fine however it has a loud hum or buzzing coming from the reversing valve. ...
  A: Fred, It's a common sound, sometimes you can quiet it down by tightening the nut that holds the ...
compressor stays on after temperature is satisfied4/13/2008
  Q: What could be keeping the compressor running when the thermostat is satisfied and the air handler ...
  A: Linda First thing to check would be the compressor contactor which controls the outdoor fan also. ...
Air conditioning4/11/2008
  Q: I bought a house a couple of years ago. The air conditioning unit is probably 6 years old. It will ...
  A: Patti, First thing that comes to mind is that when the unit starts the low side refrigerant drops ...
upper limit switch on furnace, having to reset4/10/2008
  Q: Have a goodman 100,000 output GMPN series, Multi-position furnace 12 years old installed in the ...
  A: Gary, Not enough air flow across heat exchanger due to but not limited to would be a good start. ...
Thermostat stoped working4/2/2008
  Q: My thermostat quit working completely. No fan, no a/c, no heat. I checked the breaker and it wasn't ...
  A: Lesa, Sounds like you do not have 24 volt control power due to Bad transformer, low voltage ...
heat won't turn on4/1/2008
  Q: I have set the control to fan only and the blower will turn on. When I set it to auto for the heat ...
  A: Keith, What happens if you put fan to "on" and called for heat? does everything work ok? ( heat ...
Honeywell Thermostat3/31/2008
  Q: I have a RTH7500D Honeywell thermostat controlling a 19 year old 5 ton Trane single stage heat pump ...
  A: John, I looked briefly at your stat @Honeywell website installation instructions,on a pdf file, ...
Room addition HVAC needs3/30/2008
  Q: We are building a room addition of approximately 400 square feet and need a unit to cool/heat the ...
  A: Donna, The smallest Air Conditioning Unit using duct work would be 1.5 ton or 18,000 BTU. My ...
heat pump3/29/2008
  Q: hello i live in a mobile home 14wide 80ft long would you know what size heat pump i would need to ...
  A: Jeff, You can buy the software and do it yourself Correctly instead of me giving you a rule of ...
new trane heat pump did not get new air handler3/28/2008
  Q: I recently replaced my outdoor unit heat pump with a trane 3.5 ton unit. I replaced a comfort maker ...
  A: Ann, Part of the reason your Electric Heat comes on is the wiring diagram is different because of ...
1994-95 coleman heatpump3/27/2008
  Q: we are trying to find the model number on our heat pump it was on a silver sticker on the outside ...
  A: Douglas, Yes , indoor units have model and serial numbers also .But are a little different from ...
Contactor won't close/Installed new compressor3/26/2008
  Q: I'm a mainteance tech and i installed a new compressor on a 1.5 ton goodmand split system.The ...
  A: Sterling, Is your unit equip with a low pressure switch ??,If yes than that would be a reason. ...
AC3/25/2008
  Q: The AC fan comes on for about 1 min then shuts off for another min then comes back on for a min. I ...
  A: Scott, I'm assuming your talking indoor fan , need to check voltage at fan relay to see if its ...
split system air conditioner squeak3/20/2008
  Q: I have a split system air conditioner sorry don't know the brand name. Over the past few months it ...
  A: Candice, From what I can gather from your description it sounds like the blower motor itself , or ...
gas water heater vent3/19/2008
  Q: I recently sold my home and the inspector said that the exhaust vent from my gas water heater was ...
  A: Ron, You can go to yahoo and put in "Furnace cement ". shows many on line Companies costs around ...
Central A/C water (by-product)3/16/2008
  Q: At the end of last summer/fall the air intake (located in the ceiling of one of my rooms) began ...
  A: Thomas, Are you describing the V-bend as your trap that comes out of the air handler unit ( fan ...
Heat pump3/12/2008
  Q: I'm hoping to install a forced air heat pump in a new two storey home (building in Canada) PLan on ...
  A: Krista, You have several options, you can consider installing two units one for each floor. Air ...
rheem compressor problem3/10/2008
  Q: I have a 10 year old rheem central a/c onit 4 tons. About three years ago everytime the thermostat ...
  A: David, Replace the compressor contactor if it's the original,points may be corroded and not ...
Rheem Furnace3/7/2008
  Q: I have a Rheem model 09EZAJS about 3 years old. Unit starts, goes thru ignition and burner lights. ...
  A: John, I'm taking the " blower stays on to clear gas " your meaning the ventor motor vs the indoor ...
unit size3/6/2008
  Q: i was wondering if any one could tell me the size of my kenmore cental unit by the model number im ...
  A: Tim, I don't know what size unit you have based on those numbers ,usually there are numbers with ...
burnt hair smell from register on central heat and air unit3/5/2008
  Q: I have a Goodman Central Unit all electric. This p.m. I noticed a burnt hair smell coming from the ...
  A: Jim, Usually when the electric heat is run for the first time in heat mode you will get an ...
Heater2/27/2008
  Q: I have a magic chief forced air furnace. It just stopped working. The pilot light is out. I tried ...
  A: Jodi, From your write up it suggest you have a standing pilot meaning it's on 24/7 vs a spark ...
How to repack a suction king valve?2/26/2008
  Q: Is it just a matter of recovering gas and loosing packing nut? Will I find a bad gasket or o ring in ...
  A: Gene, I'm not aware of rebuild kits for service valves for refrigeration unlike steam valves.In the ...
Goodman 13 Seer Split System2/22/2008
  Q: We had our old system, a 17 year old York split system, replaced with a Goodman Split System ...
  A: Dottie, What type of system was your York unit, a Central Air Conditioning with electric heater ...
Heat pump thermostat control2/21/2008
  Q: I recently installed a new heat pump and air handler; the heat pump runs fine, but when the heat ...
  A: Pete, Does the green light come on only when it's in defrost or does it come on also when the 2nd ...
ac/ heat pump window unit2/20/2008
  Q: I have an Amana AH183A35MA 18,000 BTU Heat Pump room AC with auxiliary electric heat unit is less ...
  A: Tammie, I checked their web site @amana-ptac.com under WRAC series, AH18 It shows the installation ...
furnace issues2/19/2008
  Q: my gas furnace comes on but the burners go out periodically, then come back on. the blower remains ...
  A: Amy, I would lean more to unit tripping on a high limit switch as you state burners go out ...
York furnace schematic2/16/2008
  Q: I need to find a york furnace schematic for a model#P2MPD14N08001E. Looked on the internet to no ...
  A: Bob, You might want to try a York Distributor in your area. Not a dealer but a Distributer.Go to ...
emergency heat2/13/2008
  Q: What is function of "emergency" heatcoil switch. I've heard it should be used if outside is below 38 ...
  A: Dale, Emergency heat mode is used mainly if your heat pump unit outside breaks. While in that mode, ...
HEAT NOT BLOWING2/8/2008
  Q: OUR HEATING FURNACE AT HOME/NORTHERN CALIFORNIA (MODEL GMP075-4 CARRIER) 13 YEARS OLD, HAS AN ...
  A: Chris, The way I read your problem is that it starts ok but has problem with a restart ( as you ...
What temp to switch HP off2/7/2008
  Q: I have read that HP efficiencies drop off at about 40 degrees. I have a Honeywell Visionpro 8000 and ...
  A: Robert, Ask five Experts and you probably will get five different answers.You can start at say 35 ...
Rheem Heat Pump2/6/2008
  Q: I am trying to figure out if I need a tech guy to come out and examine our heat pump. The heat pump ...
  A: Brandi, I don't know what your referring to when you say "there has been no activity for quite a ...
Freon leak tsting2/2/2008
  Q: My heat pump and AC unit run low about 2 times a year..They get refilled by maintenance man. He said ...
  A: Marty, The word your looking for is refrigerant,look for any oil stains on any fitting .take a ...
Air Flow2/1/2008
  Q: Our house is 2100 sq ft, and we are getting very little air flow to the most distant 2 of our 3 ...
  A: Gary, Does your duct work have balancing dampers on each branch line take off ? If not you may ...
Compressor not running2/1/2008
  Q: I have a 1992 vintage Tempstar heat pump unit. I had the compressor replaced 2 years ago. The ...
  A: Barney, Look at the capacitor closely to see if it mushroomed or leaking at the terminals,with any ...
Swamp Coolers and Heating1/29/2008
  Q: We are currently planning to build a house in Carrizozo, N.M. and are seriously considering the ...
  A: KW, If you researched all those products on the web ,you probably can answer most if not all of ...
AC Problem1/28/2008
  Q: A few years ago, I moved into a new house and installed dining room AC in the wall to cool off ...
  A: Joe, Window unit...,you may need to run your fan on high speed to try to get as much air across ...
short cycle furnace1/27/2008
  Q: I have a carrier 58pap furnace . It is 15 years old This is the cycle, The burner lights, blower ...
  A: Steve, There is no mention if the t-stat cycled off after the 4 minutes.Is the t-stat still calling ...
humidifier1/26/2008
  Q: The expert can't answer your question. Your Question was: I installed a honeywell he120a ...
  A: Larry, I read up briefly about that model , Honeywell states supply air temperatures of 120 ...
Bad Compressor1/25/2008
  Q: We live in Tennessee and just purchased this house in June. It has 2 Goodman A/c units. A 3 ton up ...
  A: Dan, Did your electric rates change recently. The state I live in increased 30 % in one year ...
carrier weathermaker 8000 code 331/24/2008
  Q: ii have a carrier weather maker 8000 the thermostat is blank (no power) the blower motor runs ...
  A: Roger, Besides calling for service, you can check your t-stat for 24 volts if you have a meter .go ...
Rheem 1215T Heat Pump1/18/2008
  Q: First of all, thank you for being available on this forum to answer questions like this. I am not ...
  A: LIoyd, Don't know what the clicking sound would be from your indoor unit. On the regular Heat pump ...
Rheem inducer vibration1/17/2008
  Q: My Rheem furnace is approx. 10 years old and regularly maintained. A few weeks ago, the inducer ...
  A: David, The Squirrel cage assembly or the small ventor motor was changed? Reading your write up it ...
Bryant Heat Pump1/16/2008
  Q: Just bought a Bryant Heat Pump in July of 2007. It is a "split system", 3 ton 13 seer. We invested ...
  A: Stacy, Your heat pump goes into a defrost cycle using a strap on t-stat/sensor on one of your ...
Funny odor every time heater turns on1/16/2008
  Q: We notice a peculiar odor not unpleasant but pungent every time our heater turns on. It stays for a ...
  A: Kristine, Don't know what type of heat you have?, I know with electric warm air furnace sometimes ...
fan direction on outside unit1/11/2008
  Q: my rheem outside unit has 2 fans. Just noticed they are blowing in opposite directions of eachother. ...
  A: Byron, Assuming your talking about the condenser fans. If so one fan may not be on (fan may be on ...
Rheem Heat Pump AC reset issues1/11/2008
  Q: I have a 2004 heat pump unit, routinely it requires a reset in order stay on. In both AC and heat ...
  A: Daren, Difficult to troubleshoot something via Internet at times,What reset are you talking about ...
heat and air unit1/10/2008
  Q: My sister has a TAPPAN model EHF 27-24-41 the problem is sometimes the heater stays on past the ...
  A: JW, With the info you gave,if you have the old mercury bulb style t-stat good chance it's out of ...
Dehumidifiers1/9/2008
  Q: I have a dehumidifier with settings of 35, 40, 45, 50%. If set at 35%, does this mean it attempts to ...
  A: Ken, try this website http://www.allergyconsumerreview.com/acr-62.html#508 .They recommend 45-50% ...
jenn air refridgerator1/8/2008
  Q: have a jenn air side by side fridge/freezer that it is about 7 years old. There is water leaking ...
  A: Renee, I prefer to answer questions concerning residential Heat Pumps and Air conditioning as my ...
central air1/7/2008
  Q: I have a 10 seer system and the condenser (5) ton needs replacing. Can I purchase a 10 seer anywhere ...
  A: Stephen, You may still find one by asking a contractor but I Doubt you will find a 10 SEER unit as ...
Janitrol Gas furnace vent motor won't start.1/7/2008
  Q: I have a Janitrol gas furnace only 2 years old, and recently the main power line failed and the unit ...
  A: Tom, Thought I answered this already 1/07/2008 Your low humming noise may be your transformer,which ...
Janitrol Gas furnace vent motor won't start.1/6/2008
  Q: I have a Janitrol gas furnace only 2 years old, and recently the main power line failed and the unit ...
  A: Tom, Your low humming noise may be your transformer,which would be a normal sound if that is where ...
Kenmore Heating and Cooling Unit Defrost1/5/2008
  Q: A tech came out to the house and said we were missing a part pertaining to the defrost function. He ...
  A: Kim, Guessing a part was not functioning and he had to order one .I am assuming your Heat Pump was ...
LP to Natural Gas conversion12/27/2007
  Q: I have a used furnace that was converted to LP. Is it possible to convert back to Natural Gas? The ...
  A: Dan, From the factory they ship units as natural gas, they make propane conversion kits but I don't ...
Heat pumps12/21/2007
  Q: When the W or W2 terminal is energized on the heat pump, does this shut down the compressor?
  A: Dale, When W2 energizes it should bring on 2nd stage heat ( if equipt.) the outdoor heat pump ...
Heater Fan Problem12/20/2007
  Q: "Auto" fan switch for heater (at thermostat) won't turn on gas heater (BUT it does work well for AC ...
  A: Don, When in heat and "fan auto" ,the blower fan turns on either by a TIME delay Relay at a set ...
furnace won't stop heat pump won't start12/20/2007
  Q: I have a chronotherm 3 thermostat, Lennox CB19/CBH furnace and a Lennox HP19-651-6d heat pump. The ...
  A: Dawn, What does not turn off the furnace or furnace fan?? If it's the fan first check to make sure ...
existing heat pump12/19/2007
  Q: Existing York heat pump 31/2 tons installed 17 years ago is still working. I would like to make ...
  A: John, It's recommend by the manufactures also some Manufacture may not warranty the outdoor unit ...
extra inline vert fan relay12/18/2007
  Q: I have a Payne heat pump, Payne AC and gas unit. I put in an extra air booster and had electrician ...
  A: Rick, Probably the easiest way would have been to hook up the fan(s) in parallel (if they were the ...
dual fuel heat pump/propane setting12/18/2007
  Q: We recently had a Trane XL14i heat pump/Trane XR90 propane furnace system installed, with a ...
  A: Chad, I looked up your t-stat on line.Honeywell lists 43 different models.I am not familiar with ...
Outside unit not working12/17/2007
  Q: Brief history on this unit (and forgive my terminology if it is wrong) 1984 Coleman heat pump ...
  A: Jay, First off, when you physically switch to EMERGENCY HEAT at the stat it's suppose to lock out ...
Heat Pump Replacement vs. Compressor Replacement12/17/2007
  Q: I currently have a Janitrol HP circa 1993 model 2 ton that cares for the upstairs comfort in my ...
  A: Mike, What is the condition of your existing unit ,does it have many of the original parts? never ...
Replacement Fraser - Johnston gas valve12/15/2007
  Q: I have a Fraser - Johnston gas furnace in my home. The gas valve is sticking on, so I need to ...
  A: Bruce, I would call an HVAC Company to install or at the very least you can buy one at and have an ...
Funrance won't turn off12/15/2007
  Q: I have a Lennox natural gas heater that is at least 35 years old and works great. I replaced the ...
  A: Cliff, First I would not be too concerned about your increase fan speed when you switch from auto ...
dunham spacepak issues12/14/2007
  Q: I HAVE A 1971 SPACE PAK SYSTEM BY DUNHAM. THE BLOWER MOTOR WENT BAD AND CAN NOT BE REBUILT. DO YOU ...
  A: Rich, Found another person or maybe it's your listing that has the same problem at another web ...
HVAC Dry Air12/13/2007
  Q: My HVAC unit dries out the air in my home. We wake up with dry mouth. Any suggestions?
  A: Robert, Warm air furnace ,install a furnace mounted Humidifier to handle your particular sq. ft. ...
new furnace12/12/2007
  Q: can you give me direction on buying a new gas furnace.i have my eyes on a 95% armstrong.can you ...
  A: Mark, Armstrong is owned by Lennox, Certainly one of the bigger Manufactors with many distributors ...
Tempstar 80% gas furnace12/11/2007
  Q: Is there anything I can do to lessen the noise from the burner ignition and the inducer fan ...
  A: Ryan, Was your unit installed recently by a reputable Contractor, if so what did they say? You can ...
Oil Furnace HELP12/10/2007
  Q: I purchased another home with an oil furnace it worked fine the first week although i had to reset ...
  A: Randy, When was the unit serviced last??,If the previous home owner had it serviced he/she ...
changing T-stat12/8/2007
  Q: I have a Nordyne (model Q3RA-024K) 2 stage heat pump and 1 stage cool system and want to change my ...
  A: James, First I would say call Hunters toll free number on the installation instructions during ...
Lennox Air Unit11/30/2007
  Q: I have a Lennox air unit; i believe it is a 13 series. When I use the heating system in my home the ...
  A: Brenda, I would call out an HVAC Service Contractor to check the A/C unit .If everything is ok it ...
Carrier Model 28RC024000 Gas Furnace11/29/2007
  Q: Problem: Thermostat is set to the heat cycle. Unit turns on and flame ignites but the flame shuts ...
  A: Dwight, Did not find any info on the 28 RC series, are you sure it's not the 58 series. If you ...
Goodman Heat pump operation11/28/2007
  Q: . Just installed a Goodman Heat pump, 3 Ton, 13 SEER, HSPF = 9.5 c/w a Goodman A/H unit with 2 ...
  A: Dale, The installation guide that comes with the Air Handler clearly shows how to hook up your ...
Goodman PH036-1011/27/2007
  Q: My heating/air unit's air hander fan wants to go out when it runs for a while now that the Tennessee ...
  A: Burton, To prove it's your blower motor you can go to your t-stat and put the fan selector switch ...
Central AC Unit Constant Buzzing11/21/2007
  Q: I have a GE Model RWF948C10000 heating and air conditioning unit in the house on the floor level ...
  A: Stefan, I'm taking the sound is coming from the fan section ,if so more than likely it's the ...
Humidistat Wiring11/14/2007
  Q: I have a humidistat (I forget the brand) connected to an older model Aprilaire humidifier. I want ...
  A: Ross, The humidistat just breaks one leg and is not directly hooked up to the transformer,you ...
Return Air Registers11/13/2007
  Q: In my 18 year old home here in Lakeland, Florida, I have 1 (one) return air register. It is located ...
  A: Joe, For the most part one central return is adequate if you have say a ranch style home.( most ...
replace with hvac or heat pump11/10/2007
  Q: i live in a 150 yr old home. Downstairs, we have a 9 year old heil 9-10 SEER self enclosed propane ...
  A: Phil, Sounds like you have a "packaged unit" everything in one box vs a split unit. What fan are ...
comfortmaker vs gibson11/9/2007
  Q: which is a better unit Comfortmaker sx 2300 R410A or Gibson 13 seer ? Thanks.
  A: Russell, I didn't go into great detail looking them up on their web site on either brands but the ...
Heat Pump Question11/8/2007
  Q: I have a newer Goodman heat Pump 13 seer 3 ton. I have a couple of questions and I would really ...
  A: Sheridan, Question 1, yes the air fluctuates depends on outdoor temp. it may be as high as 115 on ...
LENNOX GAS Furnace11/7/2007
  Q: My mom has this LENNOX Gas Furnace. It has been wired for the fan to run constantly, and I am ...
  A: Carlos, The wiring diagram should be located on the inside cover somewhere either the blower access ...
Trane XL80 Pressure Switch Code Problem11/5/2007
  Q: Just replaced an exhaust fan after unit sat for the winter. Furnace started fine and no problems. ...
  A: E, Where is the trouble shooting Guide usually it's left on the job.If your unit is not that old ...
Thermostats & transformer11/4/2007
  Q: Joe: My older Amana heat pump compressor went out. Since I am putting in a hydronic system and it ...
  A: Q, Welcome to the real world of troubleshooting HVAC units. If you have the fan circuit running ok ...
crappy janitrol11/3/2007
  Q: My grandmother has a janitrol air conditioner/gas furnace package and when you turn it on the ...
  A: M, The blower motor is not turning is what I'm getting from your description, I assume the A/C ...
Amp draw of a blower motor?11/2/2007
  Q: My central heat and A/C fan has not come up to full speed accompanied by a strong smell of hot ...
  A: Erik, Indoor fan use run cap not start. The 7 amp does not include a service factor amps of maybe ...
Heat Pump11/1/2007
  Q: I have a Trane heat pump model TWP042C100A3. The unit is not heating properly and the aux. heat ...
  A: Dexter, Don't bother checking, Buy new one cost $20.00 .pull out the old one ,clearly marking ...
Rheem heat/air conditioner (heat pump)10/31/2007
  Q: We are seniors and have a few rental units with Rheem heat/air (heat pumps) They were built in ...
  A: Jerry, You can buy from the Internet, yahoo or goggle to find a company,only problem with Rheem ...
Pumpdown10/26/2007
  Q: I would like you to explain to me how the service valves work on a standard split system. If i turn ...
  A: C, YES you are correct turn in the high side ( 3/8" line ) run unit observe if it gets to real ...
Line Set Sizing10/25/2007
  Q: I am in the process of installing split AC that calls for a 3/4" suction line.The question is there ...
  A: Rich, What tonnage are you talking about ??? Rule of thumb if its a 3 ton and less than 25 ' of ...
Air Handler Thermostat10/24/2007
  Q: I live in a very old building with a peculiar HVAC system. The building pumps hot water in the ...
  A: Andrew, Just because there is 120 volt feeding the air handler does not mean you have a 120 ...
Contactor and relay10/23/2007
  Q: I had a certified air conditioning company out to inspect my heating / air conditioning unit. I was ...
  A: Joe, 32 years out of the original contactor is Great!! buy from grainger.com contactor is probably ...
13 seer10/19/2007
  Q: I have a 14 year old 12 seer air cond, compressor is shorted out. Can i just change outdoor unit or ...
  A: Chad, If you have a piston for a metering device ,if you want to go to 13 SEER by just changing the ...
gas furnace10/18/2007
  Q: I'm renting an old apartment temporarily and the furnace is making me a little nervous. It sounds ...
  A: AMY, gas coming up thru the house would indicate a cracked heat exchanger. you would notice a ...
condensing unit tripping main breaker10/17/2007
  Q: I have a three ton goodman condensing unit and it keeps tripping the main 125 breaker. I checked ...
  A: Jay, Probably the double 30 inside is arced so it will not trip .Check it by turning it off and ...
A/C not working10/11/2007
  Q: I'm having a problem figuring out what is wrong with my home central air conditioner. The outside ...
  A: Mark, 24 volts at the Contactor Coil is what your looking for when your calling for cooling.When ...
On heat pump10/2/2007
  Q: I have a York heat pump, model E4FH036S06A. I have lost the manual. I need to know what the ...
  A: Kathy, Try calling York in Pa. they must have a technical department that can assist you. ...
Air Handler10/1/2007
  Q: ! I am needing to replace my air handler. It is 3.5 ton but I was wondering if anything bigger would ...
  A: Jessica, Pretty much any brand 3.5 ton should be ok ,If your were to change the outdoor and indoor ...
Fan on, no air.9/30/2007
  Q: I have a Payne A/C unit, heaven knows how old, but I'd hazard a guess at minimum 15yrs. Works like ...
  A: David, turn the fan on only by moving the fan "auto" to "on" position, observe the air flow , ...
Wire cut9/29/2007
  Q: I have a Rheem Corsaire HVAC, my landscaping team accidentally cut the sensor wire that goes out to ...
  A: Suby, assuming the sensor wire your talking about is the low voltage control circuit, shut off ...
Heat Pump Problems9/27/2007
  Q: I have a problem. About a week and a half ago, I had a heating/air conditioning repair person come ...
  A: Harold , Reset button is probably the high pressure switch , the part for the outdoor fan was ...
compressor freezes on my heat pump9/25/2007
  Q: i have underground source heat . if i take a garden hose and place it in the inlet anothe hose on ...
  A: Rick, Are you referring to the air conditioning coil freezing? To check if your underground coil is ...
Water collecting in basement air handler9/23/2007
  Q: The air handler in my basement is collecting water below where you install the filter - I just ...
  A: Ken, Drain is plugged , need to clear your drain line if you have a condensate pump that may be ...
AC hardly blowing through vents9/22/2007
  Q: My air conditioner is running, blowing cold air through the vents in my house, but the air is not ...
  A: Christy what is the history of the unit was it always like this? if so there may not be anything ...
goodman heat pump package unit 42000btu9/22/2007
  Q: Unit will come on, air will blow, unit satisfies goes into defrost, unit seems to be operating right ...
  A: Harold Do you have backup heat such as electric if so are they staying on. Reversing valves ...
residential equipment9/19/2007
  Q: Joe, Will you provide me your opinions on the following. a) Is installing an electronic air ...
  A: Barry, I am assuming the air handler was going in the attic, if so yes , use a garden hose from ...
residential equipment9/18/2007
  Q: Joe, Will you provide me your opinions on the following. a) Is installing an electronic air ...
  A: Barry, I am assuming the EAC is BEFORE the indoor coil, as long as the drain line does not plug up ...
Split system evaporator won't run9/14/2007
  Q: My compressor and fan outside are running but my inside evaporator fan won't run. What do I look ...
  A: Joe, Bound up fan motor open blower motor access panel and free spin the blower wheel ,it should ...
Outside a/c unit9/9/2007
  Q: My roommate had a guy replace a new 35/5 capacitor with a used and all rusted one and I believe he ...
  A: Dale, First buy one yourself from grainger.com cost $30.00. Dual capacitors have lettering on them ...
Old Mercury Thermostat9/8/2007
  Q: The expert can't answer your question. Your Question was: Hi all, I have an old mercury ...
  A: Kerry, your old stat had 2 wires on each hookup probably because they were to thin to carry the ...
AC compressor start-up noise9/7/2007
  Q: I have recently been noticing a loud noise when my just over 2 year old AC compressor initially ...
  A: Pete, I have heard compressors make noise on start up, usually refrigerant migrates to the ...
Haier fridge with frost problem9/6/2007
  Q: It's a fairly new Haier HTE 14WAAWW, but every three months the ice will build up on the coils to ...
  A: Maryann, could be the timer not turning correctly ( slower than normal due to dirt getting ...
Ice build up on copper pipes inside furnace9/5/2007
  Q: I noticed that I wasn't getting any cold air in my house. I took the back panel of the furnace off ...
  A: Brian, Low on charge most likely, also dirty indoor coil or dirty ( plugged filter ) many supply ...
Home Central AC9/5/2007
  Q: My central home AC isn't blowing any cold air. The coil and outside unit is 13 years old. About ...
  A: Mike, I answered this question, Reset circuit breaker on panel, go outside to outdoor disconnect ...
central air conditioner8/31/2007
  Q: We had a small storm today that caused the lights to flicker my wife and I were both at work at this ...
  A: John, if your handy with an ohm meter you can ohm out the compressor ,follow the 3 wires from the ...
A.C. problem8/30/2007
  Q: c can mess up because of my condenser inside my house is a little dirty. my ac unit has a heat pump
  A: The indoor coil is called a evaporator if you have only A/C .You having an Heat Pump the indoor ...
Air Conditioner expansion valves8/30/2007
  Q: what is the rate/frequency that an expansion valve cycles in a typical system. I have two new ...
  A: Ron, yes it's the TXV opening and closing according to the load in your house. TXV are better than ...
payne a/c running for long periods8/30/2007
  Q: i have a payne furnace and a/c system that was installed by previous home owners in 2003. the air ...
  A: Todd, what is the tonnage? should be around a 2.5 to 3 ton only guessing there is a web site that ...
Cleaning Evaporator Coil8/29/2007
  Q: I have 2 AC Units one for upstairs and the other for downstairs. Bottom of the Coils got rusted and ...
  A: Sreedhar, No mention of the age of the equipment , but assuming it's old,you can clean the rust in ...
Serviceman Possible Misrepresentation8/28/2007
  Q: We just replaced a 2 ton Coleman 12 SEER/2 1/2 ton air handler unit with an American Standard 2 ton ...
  A: Karen, I looked up the unit on the web PDF .You can check yourself Trane.com website .The "B" ...
Central Air Freezing8/27/2007
  Q: We live in St. Louis, MO, it's been very hot this summer, we never had a problem with our AC. IN ...
  A: SYK, Changed filter is a good start, how about the evaporator coil itself ?? if it's plugged ...
A/C blower transformer8/27/2007
  Q: My wife alerted me to a burning electrical smell.I notice the A/C fan was not blowing and and so I ...
  A: John, You should be able to run the fan 24/7 if you wanted , with or without the A/C and the ...
ac compressor not working8/26/2007
  Q: My central air compressor does not come on. The fan does come on. I pulled the disconnect and I ...
  A: Cp, The bussing is probably the compressor contactor ( which starts the fan also that is a normal ...
No display on thermostat8/24/2007
  Q: We had a storm go through the area and now my Hunter 44408 thermostat is not diplaying anything and ...
  A: Chris, t-stat has 24 volt ac , remove t-stat to reveal the subbase wiring hookup should have 24 ...
AC won't cool in the afternoon8/23/2007
  Q: My house is 1200 sq feet. Just installed is a 3 month old Carrier model 50XP 4 ton AC ground unit. ...
  A: the "slinky covered with insulation" is called flex duct in the trade.It's difficult to troubleshoot ...
Fan mode8/22/2007
  Q: Does turning on an air conditioner on FAN mode affect the air conditioners efficiency?
  A: Nicolas, If you mean turning on the "fan on" option along with the A/C it does not affect the ...
AC won't cool in the afternoon8/22/2007
  Q: My house is 1200 sq feet. Just installed is a 3 month old Carrier model 50XP 4 ton AC ground unit. ...
  A: Ralph, Either you have a tremendous amount of glass in your house or high ceilings because a 4 ...
inside blower motor removal8/21/2007
  Q: How do you remove the inside blower motor on a Tempstar heat pump?
  A: Dennis, Shut power off,remove access cover, usually there are 2 5/16" hex head screws holding the ...
generator for an airconditioner8/19/2007
  Q: i want to size a generator for an air conditioner. the air conditioner is having a running current ...
  A: Arz, I don't know personally what size you would need ,but I know that your starting amps. are ...
House not cooling sufficiently8/19/2007
  Q: I have a 10 seer 2.5 ton Rheem air conditioner manufactured in 1993. Our brick home is 1100 sq. feet ...
  A: Shawn, Outdoor coil was cleaned, how about the fins on the outdoor coil are they bent over ...
Freon installation8/18/2007
  Q: Which side to you hook up to install Freon?
  A: Steve, Suction side which is the insulated line larger of the two lines ,you need to purge the air ...
Honeywell minizone not working8/18/2007
  Q: I have a Honeywell Mini zone that works with a Lennox air conditioner. The cool light flashes, but ...
  A: Vivian Looked up Honeywell Minizone code ZMS on Yahoo .There is a pdf file on the system.Call ...
Frigidaire Window Unit8/16/2007
  Q: I recently obtained a Frigidaire FAC107P1A5 and even when I push the on/off button to turn off the ...
  A: Andrea, Circuit breaker trips probably due to compressor still running and the fan stopped, when ...
compressor lockout8/15/2007
  Q: We've got a new furnace and coil (two weeks old) connected to a Goodman compressor (about 5 yrs ...
  A: Randy, Not a to detailed description of your problem,does the outdoor unit unit run at all?? Is ...
compressor wire8/14/2007
  Q: I have a four ton Rheem heat pump, while taking the cover off to clean my unit, I noticed both of ...
  A: William, When you say you cut both ends and put new connections on the RELAY are you talking ...
ac unit8/13/2007
  Q: my house central unit seems not to cool like it should I think it to small for the house its a ...
  A: Diane, You don't say if it's a brand new unit or you had it several years. First thing to check is ...
Wiring new thermostat8/9/2007
  Q: I have a Carrier FB4ANF042. The thermostat is a Hunter model 44408. I just purchased a Hunter ...
  A: Brent, On your old stat didn't you write down which color went to which terminal connection ...
Frigidaire Heat Pump Units8/8/2007
  Q: I have two new heat pump units in my home. When they kick off and on they make a gurgling, hissing ...
  A: Cheryl One way is to install a 24 volt solenoid valve outside or inside near the indoor coil on ...
A/C unit, no water drip, breaker trips8/8/2007
  Q: I purchased a Frigidaire FAC127P1A window A/C 12,000-btu unit. Installed it level onto the window ...
  A: Ollie , I would contact Frigidaire, if the fan motor is an "open" type which means there are ...
2-stage air conditioning system8/4/2007
  Q: could you please help a confused person? I have had 4 bids on an entire gas heat/new AC system. I ...
  A: Lori, This is my opinion only,The 17 SEER has a variable fan blower speed as the room temperature ...
Thermalzone mini split8/3/2007
  Q: i am working on a thermal zone mini split heat pump system and need to have it up and running ...
  A: Eddie, By the time you receive an answer to this question I'm sure the supply house will be open. ...
Blower motor turns off8/2/2007
  Q: When i turn on my air condition has been on for a while the blower motor turns off but the unit is ...
  A: Joe, Old unit I take it,replace motor and capacitor probably will solve your problem, get the ...
a/c7/31/2007
  Q: Joe. I have a Bryant split system It is not cooling the house outside 105 degree up stair runs all ...
  A: Phil, 105 degree OD temp. add 30 degree to that temp/pressure chart says Aprox. 310 psi head. ...
SEER rating of older central airconditioners.7/27/2007
  Q: I have a Seas Kenmore central Air conditioner which I had installed in the late 1970's. How would I ...
  A: Brian, Suffice to say at best your unit is a 10 SEER ,quite possible a 8 Seer. I don't know what ...
A/C Leak7/26/2007
  Q: Is there a way to find a leak in my unit? Or this task pretty much for a technician? I have a ...
  A: Cesar, Yes anyone can pretty much check for leaks , you can use spray 409 or soap suds. First ...
electrical specifications for a compressor7/25/2007
  Q: I have a 3 1/2 ton American Standard air-conditioner. I would like to know the amount of amperage ...
  A: Art, 35 LRA ( lock rotor amps. ) I don't know exactly what it is suppose to be but that sounds ...
air conditioner residential7/23/2007
  Q: the drain pan is overflowing can i still run the a/c the overflowing is going to the pan and then ...
  A: Mara, Yes you can run your unit until you clear up the drain trap . It's not unusual for a unit to ...
comfortmaker ac7/22/2007
  Q: We have a 1998 comfortmaker central air unit. upon start up it is very loud. quiets down after it ...
  A: Dave, I have heard compressors make noise on start up, usually refrigerant migrates to the ...
Electric requirements7/21/2007
  Q: My brother is buying a new mobile home, but his park says that they cannot upgrade his 50 amp ...
  A: Pat, If you want to get an accurate tonnage sizing for your brothers residence go to ...
Condo central air7/20/2007
  Q: I have been keeping the a/c vent and door closed in my spare bedroom which is never used. My ...
  A: Fred, I 've seen people block vents for same reason without problems as long as you don't' go ...
pros & cons of relocating inside AC unit to attic7/19/2007
  Q: Our inside AC unit (fan) is currently located in a hallway closet next to our water heater. We have ...
  A: Tammy, I don't know what part of the country you live in but $400.00 -$500.00 would be a bargain ...
SST7/17/2007
  Q: I CHARGED A HEATPUMP..LOW 85 HIGH 250...SUPERHEAT 15 SUBCOOLING 17....DELTA T 9...AMBIENCE WAS ...
  A: Angel, Having proper equipment , reclaim or remove total charge. Make sure piston does not have ...
air condition7/13/2007
  Q: my air conditioner was fine. when i got home it was 88 degrees. I don't know why it stopped ...
  A: Ida Very little information here that you are giving me.A/C not working ,check circuit breaker to ...
Trane A/C Unit Coils7/12/2007
  Q: Do I have to remove the top (that holds the fan)& the sides, just to clean the coils? Not sure what ...
  A: Susan, I just spray water from the outside in at a angle, you can get it wet then spray 409 or ...
thanks7/11/2007
  Q: Joe first off i would like to thank you for your answer to my motor blower. It was the motor by the ...
  A: Roc, Indoor coil use wire brush or some type of brush with bristles then wash out with garden ...
A/C7/10/2007
  Q: When I came home this afternoon the a/c was making a loud squeeking noise. It was still blowing ...
  A: Roc, Is the unit old? if so chances are the indoor motor lacks oil to the bearing and is squeaking ...
Coleman mobile home central air compressor wont start7/9/2007
  Q: I have a Coleman central air system for my manufactured home. It is ~2 1/2 ton. When I turn on the ...
  A: Craig, You didn't mention the age of your unit, if its' old and the outdoor fan does not run ...
A/C slow to start up7/8/2007
  Q: I have a Tempstar heat pump, model ch9525vka1, with a Honeywell ct70a1001 thermostat. We bought the ...
  A: John, I looked at the pdf file page 20 of page 124 for t-stat says for a Y594g1476 to remove the ...
central air system - running current low7/7/2007
  Q: 30,000 btu central air put in last fall - just started using this summer - inadequae cooling - runs ...
  A: Dave, If you were strictly checking the outdoor unit ( split system A/C ) .And the compressor was ...
AC Fan Not Turning7/6/2007
  Q: Today the fan on my outside AC unit stopped running and the units case was extremely hot. After a ...
  A: Carol, If it's an older unit, probably time for a new fan motor and capacitor. They can be changed ...
heat pump problems7/4/2007
  Q: I bought a Goodman 15SEER split system heat pump with a variable speed air handler online about two ...
  A: Casey, What keeps blowing ? just the fan section or both the outside and inside unit. If just the ...
Normal time to cool a house down7/3/2007
  Q: I just had installed a 3-Ton Ruud 14 SEER Achiever and furnace. I live in a basically uninsulated ...
  A: Rollie, Leave unit running for several hours,it may take several hours to cool initially. Check ...
outside home ac unit5/24/2007
  Q: My cousin has a small home with central heating/ac. Her outside ac unit is not working. The unit ...
  A: C.C., yes if you or someone determines that the fan is bad ( bound up motor is a good example ) and ...
Heat pump thermostat5/22/2007
  Q: We have a rheem heat pump. Lately the thermostatseems to have gone goofy. It is set at 75. House ...
  A: Dick, You would need to buy a 2 stage heat one stage cooling t-stat. In heat mode the first stage ...
Heating and Air Unit5/21/2007
  Q: I have a small Janitorial Heating and Air unit for the mother-in-law suite of my house. It is 7 ...
  A: Saundra, Unit cycles on /off …… several conditions Low refrigerant charge, trips on low pressure ...
Heat Pump Failure/Scam3/21/2007
  Q: My 17 yr old Ruud 4T Heat Pump/Compressor just bit the dust. Until last week it had performed great! ...
  A: Les, If you were told that the compressor capacitor was bad and caused the unit to fail,did they ...
Heat pump3/14/2007
  Q: It wont come on and the compressor ??? or condensor covered with ice?as well as the line coming into ...
  A: Your question is vague, Outdoor unit won't come on? breakers not tripped ?. Outdoor unit covered ...
heatpump3/8/2007
  Q: My problem is this: During the hot summer months (Florida) I turn on our AC in the morning and it ...
  A: Gene, When you refer to the breakers for the compressor are closed ( and good and clean ) are you ...
heater3/6/2007
  Q: We have just purchaced a brand new home. 2 story. Heat is electric. We have 2 bedrooms over the ...
  A: You don't mention if you have balancing dampers on each supply take off ( branch line ) to help ...
a/c overflow dish filling3/2/2007
  Q: My A/C unit in my house (2800 sq ft) overflow dish (the thing with the overflow sensor in it) is ...
  A: Francine, You didn't mention that you also replaced the indoor unit ,so I’m going to say you have ...
AIR FLOW WITH HEAT PUMP2/28/2007
  Q: WE JUST INSTALLED A BRYANT EVOLUTION FURNACE WITH A VARIABLE SPEED FAN AND A 4 TON PREFERRED BRYANT ...
  A: Jill, I checked Carrier/Bryant web site on your particular type of system,Carrier calls them ...
Armstrong Furnace Problem2/23/2007
  Q: I have an Armstrong Ultra V Tech 80 gas furnace that is 5 years old. It will not stay running. I ...
  A: Scott, I looked at the Armstrong/Air Ease website for your model.They have parts warranted for 5 ...
heat pump air handler2/22/2007
  Q: Our Carrier heat pump is 4 yrs old. We change filters each month. The last one was dirtier than any ...
  A: Barbara, Not to sure what your asking . Changing your air filter regularly is great. Hopefully you ...
size of central unit needed2/21/2007
  Q: What ton unit do I need to heat and cool a 1950 sq ft home
  A: Bryan, You can try this website www.heat-loss.com/main they have a residential package for ...
Home central a/c w/significant ice in flex tubing2/20/2007
  Q: Joe, I have a newly installed central A/C system installed in the attic of my well insulatated ranch ...
  A: Ray, Here is a question I answered for someone in December, basically the same question , also I ...
Refrigerant leak in A/C unit2/15/2007
  Q: My house was built in 2002 and I have a tempstar unit in my house and last time I had it check, the ...
  A: Millie, Why do you think your getting sick from the Air Conditioning unit and not some other things ...
Is it the heat pump or installers?2/14/2007
  Q: Trouble with new units. Briefly... we had new heat/air unit installed in our 2story home in ...
  A: Kelly, Not to sure what type of system you have besides two split system Heat Pumps, You describe ...
Warm Air Furnace2/13/2007
  Q: Our furnace runs on heating oil. It went out the other day. I beleive we ran out of oil. So, we ...
  A: Jennfier, No, warm air oil heat does not have a pilot like gas units, If you indeed ran out of ...
Trane XE 900 Capacitors2/9/2007
  Q: I just had some repairs on the inside air conditioner. The capacitor to the blower was dead and ...
  A: James, Shut the power off to the outside unit and remove the electrical access panel. Somewhere in ...
transformer burn2/8/2007
  Q: i have setting the cold&chiller room, the are together with same compressor. my problem is, ...
  A: Alamin, Hard to understand exactly what your saying , but if you have one transformer only,and it ...
rheem furnace2/7/2007
  Q: "The Furnace will ignite the gas and start the intake motor and heat up inlet chamber then the ...
  A: Doug, Here's how they pretty much work on a call for heat your inducer motor ( what you may be ...
RE: AC fans run without unit on2/2/2007
  Q: I am having such a time with my ac fans. They are running and the unit it not on. The thermostat ...
  A: Rachael, What fan are you referring to, in one sentence you say fans, meaning indoor and outdoor ...
Heat2/1/2007
  Q: I am experiencing a problem with my heat. The blower is continuously blowing cool air throughout ...
  A: Ben, The blower continuously running tells me it works on time and not temperature to start, so I ...
electric heater blowing cold air1/26/2007
  Q: I have an electric heating system. When used, it only blows cool or lukewarm air. I can not get ...
  A: Sara, What is the history of your house/apartment has it ever gotten above 66 degrees??? The ...
HUMIDIFIERS1/25/2007
  Q: . We built a new home in MN & put in a geo-thermal system with heat pumps. Our problem is that ...
  A: Jami, Go to WWW.Trane.com/Residential/Products/Humidifier then open " view the humidifier owners ...
LOCATION OF HEAT PUMP?1/24/2007
  Q: Building a new house. Thinking of using central split-unit. Where's the best place to put unit ...
  A: Denise, The way you describe it to me, "ducts under house" tells me no basement,with that in mind I ...
Rheem Criterion furnace - residential1/23/2007
  Q: Rheem Criterion furnace in a 2 story 2500 sq ft house built on slab. Thermostat on second floor. ...
  A: David, I looked at WWW. Rheem.com website Criterion furnace units ,they showed several types ...
Contactor doesn't pull-in1/19/2007
  Q: This question is in regards to a Peregrine Industries SmarTemp Model T-1000 swimming pool heatpump. ...
  A: Jim, That’s what I call a pretty detailed write up.and you don’t mind getting involved ...
York Heatpump / York air handler1/11/2007
  Q: I want to turn on outdoor heatpump unit from the board in the air handler without going upstairs to ...
  A: Brian, Somewhere inside your Air Handler you should have a terminal board/connection where your ...
No Heat1/10/2007
  Q: My husband tried to drain the sediment out of the bottom of our hot water heater and we think the ...
  A: Lisa, Not to sure what type of system you have, perhaps what you describe is a indirect water ...
PTAC unit not heating1/9/2007
  Q: I have a 3 year old Amana PTAC thru the wall unit. The a/c is working properly however when I turn ...
  A: Betsy, The thermostat could be defective ,I would shut the unit off.( unplug or shut breaker) then ...
Lights dim and loud heat pump start1/5/2007
  Q: I have a Goodman GPC/GPH heat pump recently installed. When it starts it makes a loud thump/click ...
  A: Tim, What did the Contractor say was wrong?? If it was recently installed they should have a ...
change from york d-600 to Honeywell TH8321U10061/4/2007
  Q: Good evening, Could you help me in wiring installation of Heating & Cooling Thermostat programmable ...
  A: Is this what you have? , a warm air furnace with a coil on top of it with a heat pump outside. If ...
blower wil not shut off , furnace will not ignite1/2/2007
  Q: i have an Arcoaire natural gas furnace , about 6 years old . the blower will run continuously and ...
  A: Chris, When you reset the limit ,everything works ok as you stated. The blower runs even when the ...
Air to air heat pump12/23/2006
  Q: Had this unit in Fl for 22 years, when thermostat called for heat, air coming from vents was warm. ...
  A: Tom, I live in New England and have an Air to Air Heat Pump in my house, using it in mild weather ...
moisture buld up in attic ac during winter12/21/2006
  Q: Hi Joe i have ac unit up in the attic the unit works ok in summer time the problem in winter the ...
  A: Gene, I had the same problem with my system ( Raised Ranch with Air Handler in attic and Baseboard ...

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