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There are 29134 articles in 2938 discussions. See the most recent and the best rated articles in HVAC Discussions

The most recent discussions

New HVAC issue

June 12, 2018, 10:13 am

Hi all, Thanks for your advice in advance. I bought a condo in February this year. New HVAC system installed in December 2017. Goodman 2 ton with a compressor on the roof. First day of needing the A... Read more »

Two bedroom return vents got covered during renovation. Is it critical that...

June 7, 2018, 3:09 pm

New home owner here. We had the first floor renovated before we moved in, and had new sheet rock put up everywhere. I noticed after we moved in that the return vents in each of the two bedrooms were ... Read more »

Furnace makes an electrical noise/hum even though the thermostat is set to ...

June 7, 2018, 2:50 pm

First time home owner here. The house has an American Standard Freedom 80 natural gas forced air furnace, I believe the unit is a 2016. I noticed lately, since I've turned the thermostat to the OFF p... Read more »

4 wire duel inlet 230v

May 18, 2018, 1:14 am

i have a blower 230v 4 wire 60 hrz 3120rpm that i am wanting to use but not sure about the wiring. it has 4 wires yellow, blue, red, green. i have two of them but i cant find any info about them even... Read more »

Remove hot air from sloped ceiling to attic with exhaust fan

May 6, 2018, 7:27 pm

I have what I think is an unusual setup of a sloped ceiling that may offer an easy fix to my problem, but wanted to get some opinions from you guys. Our master bedroom, on the 2nd floor (top floor), ... Read more »

What physically happens that a chest freezer is very slow to start?

April 6, 2018, 5:00 pm

We have several older Kenmore chest type freezers. We fill and empty them and will shut them off for a month or two, then restart them. when powered up, you can hear that power has been applied t... Read more »

trane x80 control board

February 14, 2018, 4:25 am

I had preventive maintenance done on my gas furnace. Noticed the control board had a brown spot. Is this something the tech could have cause or does it appear as a normal failure. The reason for as... Read more »

Inducer motor needs to be replaced?

January 16, 2018, 6:53 pm

Elderly mother had her furnace inspected by company that originally installed furnace 16 years ago. Serviceman/technician stated to her that the inducer motor is working but you might want to replace... Read more »

oil tank fill whistle

January 15, 2018, 11:01 pm

had a new 275 gal oil tank installed. Oil company fills up but i ran out of oil in less than a week. Delivery man can not hear whistle and so he doesn't give enough oil fearing he will cause a flood.... Read more »

Gas furnace burners not turning on

January 8, 2018, 10:56 pm

*HELP PLEASE! *I have old Bryant Gas Furnace Model # 397HAW036A..The system kicks on, pilot light starts clicking, but blowers do not ignite. If you hold switch near furnace panel down the blowers ... Read more »

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The best rated discussions

Safe to open window sash with installed AC (with brackets)?

rating: 5

I have an LG LW1804ER window air conditioner that was professionally installed in an apartment building window. It does have support brackets outside that angle from the bottom-back of the unit and ... Read more »

rough opening for Carrier 52F wall sleeve

rating: 5

Does anyone know what the rough opening should be for the 52F wall sleeve? The Carrier installation manual gives 52F wall sleeve dimensions of (25 7/8 (W) x 15 9/16 (H) ), but are they inside, outsi... Read more »

heat pump repair/replace?

rating: 5

Hello, I've got a HEIL heat pump (details below) that keeps blowing the circuit breaker. I replaced the 60A dual breaker today. I've tried having the unit controlled to Off and turn the breaker... Read more »

Trane air handler cycling on and off

rating: 5

In South Florida and I have an 11 year old Trane XLI14, air handler model # 4TEE3F49A1000AB. Starting today, the air handler motor kicks on, ramps up to speed, and then after 2 to 15 seconds, sh... Read more »

Rheem Heat Pump blowing Reversing Solenoid

rating: 5

I have a 12yo Rheem Heat Pump that the HVAC tech can't figure why it is shorting out the reversing valve solenoid. It has been replaced twice and is out again. The tech is saying that he can't find... Read more »


rating: 5

Hello, I have a model FSU2x2400A air handler and a condenser model EQ71924434. The unit will run for a hour and a half and trip 5 amp control fuse. the tstat was replaced the control board in air han... Read more »

Carrier Comfort Temp Thermostat 140027-03A

rating: 5

The 14 pin LCD chip that shows the day/time of each zone setting is bad. Not only can't I find any info about the chip, I can't find any info about buying a new thermostat. It is a 4 zone system and ... Read more »

Wired my Aprilaire model 60; Furnance Always On?!?

rating: 5
  [ 2 ]

Hi.. i wired my new Aprilaire humidifier exactly as directed to an older Lennox furnace. The furnace now turns on, no matter what the thermostat setting. It has something to do with the C connection... Read more »

Wine Cooling Unit

rating: 5

I have a wine cooler/refrigerator which has quit working. I think it may need to be recharged. (it looks like a small window air conditioner). Will a local air conditioner be able to recharge (R134... Read more »

Honeywell TH8320U1008 Tstat

rating: 5

I have a HoneyWell Th8320U1008 tstat installed and I'm trying to add an outside sensor to it. When I step thru the codes I go from 330 to 500 skipping all codes in between. The outdoor sensor is hook... Read more »

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