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There are 28971 articles in 2905 discussions. See the most recent and the best rated articles in HVAC Discussions

The most recent discussions

Is having no cold air return harmful

May 24, 2017, 4:49 am

And how is it harmful? Read more »

Rheem AC

May 22, 2017, 2:52 pm

No power at digital thermostat unit. No lights on 4721517-22 board. Appears plastic cap of the largest capacitor on board is damaged. (Not the large starting capacitor) safe to say need new board? Read more »

Goodman hpt1860

May 10, 2017, 12:06 am

I have all wires routed except for the brown one. Where does it go? Read more »

Restarting Chest freezer

March 12, 2017, 2:16 am

I'm the guy with 12 chest freezers used in my business. I have two freezers that are hard to get started if left not running for long, otherwise they cool fine and run at or below -10*F. When e... Read more »

Supply Registers (6" Round)

February 20, 2017, 12:30 am

How many supply registers (6 round) can a 5 Ton AC unit have? Specifications: Maximum CFM: 4,046 Cooling BTU's: 59,500 SEER: 16 Read more »

Tempstar furnace, pilot light turns on then off in 1 second

January 4, 2017, 12:38 pm

I have a Tempstar natural gas furnace. It has electric element for ignition of the pilot. It was working fine all December. Now, it does not work as follows: the draft fan starts and runs correctl... Read more »

New 95% furnace... can i use the old roof hole?

January 3, 2017, 4:57 pm

I want to replace an old 80% furnace that vents through the roof. But I don't need a new roof, and I'm hesitant to disturb the old shingles. Is there a kit that lets me put a high-eff concentric ve... Read more »

Trane Heat Pump

December 29, 2016, 3:29 pm

I have a Trane heat pump system that's about 20 years old in my house. Model # TWE036C140B0. I recently self installed a new Honeywell thermostat, and while it runs fine my energy bill has been incre... Read more »

Sparks seen in Baseboard heater

December 23, 2016, 8:30 pm

I live in a Condo Apartment. It has quite old baseboard heater. It was quite loose and displaced from the wall so I was trying to tighten its screws and then found that it sparks when it moves. Its w... Read more »

reznor propane heater

December 17, 2016, 10:15 pm

Why does my reznor burner shut off every couple of minutes? Read more »

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The best rated discussions

Trane A/C A-coil rust rating: 5

I have a 3 year old Trane XL14i. The evaporater coil / air handler is in the attic here in south Florida (fairly common). Now that it is cooler, I opened it up to clean the blower and just inspect... Read more »

Carrier/Bryant specified max static pressure for their AFU 94 furnaces? rating: 5

Anyone have a factory document (scan or pointer) which provides the factory's specified max static pressure? With their Infinity/Evolution thermostats max and current static pressure can be read s... Read more »

Amana 4 ton condenser blower motor rating: 5

  [ 2 ]

I have a 9 yr old Amana 4 ton 12 seer unit on my 9 yr old house in Houston TX. Yes, we use the AC nearly year-round so down here they seem to have a 10-15 year life span from what people tell me. Mi... Read more »

Re-use R22 line set for Puron system rating: 5

Today I rec'd the first of 3 quotes that I plan to get to replace my 25 yr old 4T Carrier heat pump and GE air handler. The contractor did a Manual load J and determined I need a 4T unit. (old syste... Read more »

Finding TXV problems? rating: 5

  [ 2 3 ]

Has anyone been seeing new TXV problems? Ive recently installed a Tempstar 5 ton 14 SEER condenser with an Aspen TXV coil. (Sorry, the Tempstar matching coil had NO WAY fo fitting in that space.) Ra... Read more »

Goodman evaporator unit rating: 5

  [ 2 ]

I have a Goodman U-36 Rev B evaporator unit installed in mid-2003 in new construction. System suddenly stopped blowing cold air overnight. Technician I called checks around, says there's no juice,... Read more »

System 2000 Inducer Runs continuously rating: 5

I have a Energy Kinetics System 2000 oil fired boiler in a home I recently purchased. The inducer ( a fan that draws air through the exhaust pipe in a chimmneyless installation) runs almost continuou... Read more »

Oil tank heater rating: 5

I have a 600 litre diesel tank that is stuck for 3-4 months of the year in a premafrost. This has obvious effects to the diesel as it gets to the point of gelling in the tank/lines. I intend to fit a... Read more »

outside condenser: which pipes get insulated rating: 5

  [ 2 ]

For a central residential AC system, for the two copper pipes going to the outside condenser unit (outflow/inflow), which copper pipe(s) should the insulation be placed around? And what purpose does ... Read more »

Trane TXV problems on XR-13 4 ton split system rating: 5

  [ 2 ]

Please Help......New tradesman trying to diagnose this problem.....This system was installed may of 06 and since we have had 3 txv valves go bad. Before I change this valve again, this just sounds ... Read more »

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