"dual evaps for residential system.. " , posted Sun 24 Aug 01:04

hey all,Putting in central air system for mother in law. Two brand new, never been used evaps are already installed, one is 2 ton, one is 3 ton. I would like to put one 5 ton condenser outside. ... read more

twentybelow

"New Air return above door " , posted Sat 23 Aug 14:50

My air conditioning unit has one air return centrally located in the house. The door to our master bedroom (bedroom,walk-in closets, and bathroom) is now closed to keep the pets out. Recently our elec ... read more

dossimoe

"Rheem Ruud Hot Water tank problem " , posted Sat 23 Aug 13:34

I have run into a problem with my rheem ruud hot water tank model #pvw180. When i plug it in, the ventor motor starts and runs continuosly, the hot surface ignitor glows, but the gas valve does not cl ... read more

gamacher

"Trane XE1000 Coil " , posted Sat 23 Aug 09:15

I have a Trane XE1000 A/C unit. It is just over 8 years old and the outside coil is leaking. The tech says it must be replaced but is having hard time locating one. Is there anyone out here that has ... read more

skbyoung

"Replacing thermostat with Honeywell rth8500 " , posted Fri 22 Aug 11:41

I am replacing an old thermostat in which wire codes are (GREEN connected to G) ( BLACK connected to C) (White connected to W2) (RED connected to R) (ORANGE connected to O) and (YELLOW connected t ... read more

Lynch

"Carrier Puron High Effeciency unit wont run. " , posted Fri 22 Aug 00:56

Greetings,I just purchased a home that has been vacant for nearly 6 months the power has been out since then and everything is fine but when my home inspector was doing his checks he was unabl ... read more

JasonH

"Help! control board fuse blowing " , posted Wed 20 Aug 12:18

th e 3amp fuse on my board keeps blowing only when the ac comes on ..the heat works fine and the fan works fine but as soon as i switch it to ac the fuse blows. i need to know where to start looking f ... read more

D-lux

"Burning Smell from Heat pump " , posted Wed 20 Aug 08:14

Hello,About 6 months ago (February) we were awaken by a very strong burning plastic smell and no air from the vents. HVAC tech came out and had to replace the blower motor. Everything was wo ... read more

deanj

"How to recover Help ( ez for u hvac Vets ) " , posted Wed 20 Aug 04:44

hello am quite new and i wanted to kno if any one had links to, guides or How to's on how to Recover on hvac systems. i kno the simple what goes where like Blue hose on the low side and stuff but It ... read more

dudeman

"Carrier Fa4anf036 will not cool " , posted Tue 19 Aug 21:36

We have a carrier split system model # Fa4an036-38ycc036-3. It will not cool. It is only blowing hot air. We have made no changes. It was just working one day and stopped the next. It has been wo ... read more

EEAir

"Blower Not Coming on " , posted Tue 19 Aug 14:41

Hi Guys - I have an issue and could use some help troubleshooting. My blower is not coming on unless I hold in the switch manually. When I hold it in everything seems to work fine. But can n ... read more

craigblitz

"Honeywell VisionPro TH8000 - Backlight " , posted Tue 19 Aug 12:45

How do I turn the backlight off until I need it? It currently is better than a night light. ... read more

dbieniek

"Payne 90 Plus Wiring... fan does not work " , posted Tue 19 Aug 11:53

I am a layman handyman, just trying to help my brother the pastor...The AC unit outside works, but the fan inside will not come on. There is not power getting to the fan. I am looking for a wi ... read more

tbalderm

"Furnace wont shut down " , posted Tue 19 Aug 00:13

I have a armstrong ultra V 93% furnace (switched to propane) with a air conditioning unit. controlled by a honeywell chronotherm IV plus thermostat. Any way the furnace and the ac wont shut off from ... read more

Reid

"tempstar 12 blower motor " , posted Mon 18 Aug 20:20

Hello, I have a Tempstar 12 Heat Pump A/C. Recently the blower fan motor has been stopping and smelling. After turning off for a while it will run again. while stopped the motor is extremely hot and i ... read more

bojackcd

"a new a/c system will not cool the house " , posted Mon 18 Aug 19:13:

just installed a new 3 ton a/c system in a 1,700 sq ft house but it wont cool it?? The temp split is 18 to 20 deg. dif. Cleaned all the returns and filters, blower is on the high speed for cooling, th ... read more

tigers37

"Noisy Supply Vent " , posted Mon 18 Aug 13:00

Just installed a new 14 Seer Goodman heat pump with variable speed air handler. Everything works great except I have one supply vent in a room that pulsates. It is an 8' run of flex coming directly o ... read more

pbhouse

"((Wiring)) Ruud T874R Q674L to Honeywell 7400 " , posted Mon 18 Aug 11:49:

Hello there. First of all, is this configuration accurate for a 2 stage? If so, do I need a jumper from the AUX to the E? This is what I configured:Y -> Y yellow wire)G -> G (green ... read more

cjones002

"Will TXV valve compensate for mismatched coil " , posted Mon 18 Aug 09:47

The home warranty company (HMS)will charge us $280 (for disposal of old parts, reclaim refrig & a new pad) and will cover parts and installation of a 14-SEER Goodman condenser unit, a TXV valve and a ... read more

jean55

"TXV Valve " , posted Mon 18 Aug 08:46

I purchased a 4 ton Heil 14 SEER split AC system (R22 refrig) from an internet seller (though I picked it up myself since they were located only 50 miles away). An acquaintance of mine, who is an AC ... read more

CogDis

"Lennox Elite Series Thermostat Loud Clicking " , posted Sun 17 Aug 21:25

This model (3 heat/ 2 cool programmable) makes a very loud clicking noise when turning on and off our Lennox air handler. I guess the relay is in the thermostat unit itself. Any ideas on how to muffle ... read more

rdurkan

"York Heat Pump " , posted Sun 17 Aug 21:02

We've had our heat pump for approx. 14 months. A few months ago I came home from work and the A/C was blowing hot air? I turned the unit off and called a repair man. He came out and couldn't find a ... read more

casmith12

"Control Board or Transformer: Trane XB80 " , posted Sun 17 Aug 18:48

Without warning, the display on my Honeywell t8601D Thermostat Went Blank, and of courrse the A/C is not operational here in the Texas Summer. Other unit in home works fine, and I switched thermostat ... read more

mark101

"Wiring New System - Help Please... " , posted Sun 17 Aug 18:27

Hi,I'm installing a new furnace, central air and thermostat and could use some advice regarding wiring it all up... the thermostat is a White Rodgers 1F85-0471 programable with cool sa ... read more

Imago

"GMP075-3 Control Board schematic " , posted Sun 17 Aug 18:24

Does anyone have or know how to get a hold of the schematicdiagram for the control board in a GMP075-3? It's the same board that's in the GMP030 or GMP050Thanks,Jimmy Baskerville ... read more

Baskerville

"help with thermostat wiring. " , posted Sun 17 Aug 14:26

I'm not new to wiring thermostats, but while changing the one at my house I noticed that W2 and Y2 were jumped together and had an incoming line that I traced back to the C terminal on the board. My ... read more

flamelessSE

"CARRIER MODEL ZAV115-16 " , posted Sun 17 Aug 07:16

Can some one tell me about carrier model 58zav115, Is this a 2 stage, single stage or what? does it have variable speed, 2 speed, single speed? I just can't find any Doc's anywher telling me this. ... read more

NOTSOSURE

"scamatics or manual for holly -general " , posted Sat 16 Aug 22:24

is there any where to get scamatics or a manual for a holly - general mod. 120 HF3A-9 furnace? ... read more

dmvictum

"OMg it is hot " , posted Sat 16 Aug 21:31

( It is a Lennox) It stared with the fan not blowing outside and the inside running non stop. I could play with the brakers and get the outside unit to come back on and oprate normally. Then it would ... read more

welkman

"Thermostat wiring confusion " , posted Sat 16 Aug 19:05

I have a Goodman heat pump (model CPLJ33-1A) and a new Honeywell TH8320 thermostat. Where do I connect the orange, black and brown thermostat wires? Thanks ... read more

negreys

"Need a new Sytem " , posted Sat 16 Aug 16:48

Replacing Forced Air Oil Furnace and AC compressor.....Is it better to use a flex system where the outside unit will heat the house using electricity until the temperature outside drops, requiring the ... read more

mdivad

"Trane Clean Effects vs. Lennox Merv 16 " , posted Sat 16 Aug 15:14

This past summer I contemplated purchasing the trane clean effects vs. the Lennox Merv 16. I have pets and have seasonal allergies and a newborn. I noticed that the Trane Clean effects covers mold/b ... read more

babiloo4269

"No fan and hissing " , posted Sat 16 Aug 13:38

My fan on the outside compressor has stopped working.The two ton outside unit also began to hiss.Is the fan gone ,and a prv valve operating or is my whole unit toast?Any comments would be appreciated ... read more

TeeZee

"DONATIONS " , posted Sat 16 Aug 11:55

I just made a donation I know that it takes time and money to keep this web site up and running It wasn't much at all but every little bit helps. I thank you and everyone for all your hard work for ... read more

ONEMOREBET

"Help - AC Won't Cool the House " , posted Sat 16 Aug 02:57

I need some help trouble shooting an AC system we just had upgraded.About 1 year ago we upgraded our HVAC system:(1) Redid most of our ducting.(2) Created 3 zones in the house - with H ... read more

fgaldes

"How Many of You Come Across This Stuff??? " , posted Fri 15 Aug 15:55:

I'm in the process of interviewing contractors to finish my basement and while looking at the HVAC system, I found this:

"Water dripping from supply vent " , posted Fri 15 Aug 12:48

I have water dripping from supply vent in restaurant.It seems to take place when in coolong mode.This is a roof-top system. I have changed the filters and checked drain line for stopage. The l ... read more

Troy Wheeler

"Carrier Tech2000SS motor went out today " , posted Fri 15 Aug 10:35

Is there somewhere that you can get a replacement motor for the outside fan for a Carrier Tech2000SS in a hurry? Thanks for any help! In Waukegan, IL ... read more

Mike Griffin

"AC Broken - HELP ! " , posted Fri 15 Aug 07:47

Folks,I have a 1993 Armstrong Ultra III 80 forced hot air system.On top of this is what I believe is a separate large square heat exchanger chamber.there are two lines (one 1/4 ... read more

nhhockeyplayer

"Houston... we have a problem. Trane System.. " , posted Fri 15 Aug 07:32

I know someone here would get a kick out of that message title. :)I have a Trane XR90 air handler with a gas furnance for heating and a 13 seer air conditioning system for my first floor. The ... read more

csmpez