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There are 29107 articles in 2933 discussions. See the most recent and the best rated articles in HVAC Discussions

The most recent discussions

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 »

Humidifier stopped working, bad board?

December 30, 2017, 3:07 pm

My whole house powered humidifier stopped working last year. Finally decide d to do some troubleshooting and noticed that the 24 volt humidifier circui t is never getting triggered. Using a voltmet... Read more »

Ecobee3 humidifier power internal or external which one is better?

December 29, 2017, 6:58 pm

Hi! Question for those who know. Is there a benefit of using an external 24VAC source to power the humidifier like - EAC/HUM output on the furnace board vs taking it from the T-STAT. My ecobee3 can b... Read more »

Fresh air intake wood pellet stove

December 27, 2017, 9:58 pm

Why is the fresh air intake pipe so wet?There is a lot of water dripping from it. Read more »

Heat pump and oil running at same time

November 27, 2017, 8:09 pm

I have Raheem hp with rheem oil furnace for emergency heat. The hp and furnace are running at same time. Hp comes on 4 minuets later oil comes on. Both are running at this time Stay says heat and au... Read more »

Bryant Plus 90 Error Code 34

November 22, 2017, 10:38 pm

Code 34:Diagnosed--Replaced ignitor, sensor, and electrical board.!!Now....Turns on, fan runs, ignitor gets red, flame come on for about 3 seconds, flame shuts off....Code 34 again UGH. Please help. Read more »

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The best rated discussions

Heat Timer ETP control panel

rating: 5

I have a Heat Timer ETP control panel, which controls a gas boiler for an apartment building. It's not working that well and was wondering if the circuit board can be cleaned? If not, what is the... 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 »

geothermal runs constantly

rating: 5

Charlie ------------------------------------- Charlie ------------------------------------- My Water Furnace heat pump runs constantly, or nearly so. I have burned out 3 control boxes in the past 3 y... 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 »

Does this inducer fan on my new furnace look normal?

rating: 5

Here's a video of the inducer fan on my new Carrier 58CVA forced air gas fu= rnace: =20 http://www.youtube.com/watch?v=3D661gZz1OspY When capturing this video, the furnace was shut off and I had spun... 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 »

pls help: gas furnace short-cycling ...

rating: 5

This morning I noticed it again: Setting the thermostat to 68 with my house at 63 degrees, the 18-year old Day-and-Night fired up beautifully, ran about five minutes, and then turned off the flame a... Read more »

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