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The most recent discussions

AC Condenser Unit Relocation

July 5, 2017, 4:23 am

One of my neighbors, as part of a backyard renovation/landscaping project, will be moving their condenser unit from a northern exposure, to eastern exposure. It is a 5 ton unit, and probably 2-3 ye... Read more »

dielectric cooling of computer clusters

June 28, 2017, 9:58 am

One company that I worked for has converted their computer clusters to dielectric fluid cooling. Not sure who kitted them out, but one such vendor is: http://www.grcooling.com/energy-2/ Now what... Read more »

TXV valve replaced, reversing valve replaced, lines flushed and a/c still i...

June 27, 2017, 11:43 pm

Our central air stopped working about 6 weeks ago. We have 6-7 year old Tappan unit. We were getting air through the vents inside but the air was not cool and the compressor outside wasn't running. W... Read more »

Ac issue

June 19, 2017, 4:51 pm

I have an air exchanger in a walkin crawl space. One of the ac vent feeds about 6 ft. from the exchange has mildew around the outside foil ventilation pipe insulation. What is causing this? How can... Read more »

Looking for A/C info - Tonnage and SEER rating

June 12, 2017, 1:08 am

I am under contract to buy a home that has an older RUUD unit. The model number is Uead-1415j. I have tried finding info online on this unit and have been unsuccessful. Does anyone have specs on t... Read more »

Installed cost of a 24000 BTU 4-unit mini-split systm

June 8, 2017, 8:49 pm

Greetings! I just had an estimate for a 24000 BTU 4-unit mini-split Carrier system. I have a 900 Sq ft ranch--with a complete 900 sq ft semi-finsished basement. 3 units would go on the main floor ... Read more »

air conditioner not working properly

June 5, 2017, 1:18 am

The temperature never recovered after it automatically adjusted for power savings on Friday afternoon. Temp set at 77, thermostat temp says 90 degrees. Honeywell Utility Pro smart thermostat. Read more »

Is having no cold air return harmful

May 24, 2017, 9:44 am

And how is it harmful? -- for full context, visit https://www.homeownershub.com/hvac/is-having-no-cold-air-return-harmful-48546-.htm 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 »

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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 »

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 »

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 TWR030C heat pump, poor performance.. rating: 5

  [ 2 ]

I have a five year old Trane TWR030C heat pump. As this heating season started I noticed it running excessively. With a measured airflow over the indoor coil of 1100CFM and an outdoor temp of 45Deg... Read more »

134a discharge pressures rating: 5

I work on some old equipment (ice chests, from Leer). The older R-12 units used to run about 150 to 170 discharge pressure. The R-134a units run more like 225 to 250 or so. Anyone else seen this? ... 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 »

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