Home Improvement Stack Exchange
Home Improvement Stack Exchange

Questions tagged [central-air]

For questions regarding a central cooling system for your home. This is typically a split system with an outdoor compressor/condenser and an indoor evaporator and air handler. Air ducts are used to cool air throughout the home.

For general cooling questions not related to a central cooling system, see .

See also the following tags for specific components:

229 questions
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Should I install an air conditioner pad on existing unit?

In budgeting time and money for a house I just purchased, the inspector noted that the central air conditioner is mounted outside without a pad underneath. The unit is a Carrier 38CKC024330, manufactured in 1999. The product data I found online…
calcium3000
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Should I move the furnace upstairs to help cool the 2nd story?

My wife and I live in a two story, 1400 sqft home. Recently, our 24 year old HVAC system died on us and we've been recommended by three different independent repair guys to replace the system rather than fix it since the brand that was installed is…
Kyle Hayes
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New Central Air Install: choosing single-stage vs dual-stage condensers

Specifically: would a 2-stage 3-ton condenser be more efficient than a 1-stage 2-ton condenser? Let's assume the same SEER rating for both. What about reliability? - I heard that 2-stage are a lot more complicated, does it mean more…
Meringros
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Central Air and Hot Bedroom

We have central air in our house and with summer quickly approaching I am looking to address how hot our bedroom gets even with the AC running. We keep our bedroom door closed and I am guessing that since there is no air return to the unit (air…
Wayne In Yak
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What leaked out of small copper line when I blew a hole in on my air handler

I changed my blower motor out and in the process a wire arced out on a small copper line and blew a hole in it. What leaked out? I have since soldered up the hole and have not run the unit. I fear that if it was freon that leaked out it would damage…
Lucas turner
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What is causing my AC to trip the breaker after running for about an hour?

After I turn on my ac, about an hour or two later it will make a noise and trip the breaker. Could this be a short in my fan motor? The fan does run.
dallas
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Central air compressor fan reflects sunlight into house. What can I do about it?

I have a new construction and for whatever reason the HVAC installers placed the compressor right in front of a bedroom window. I don't have any complaints about the noise (it is actually pretty quiet). Unfortunately, the fan blades reflect…
Tim Reddy
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AC unit don't work right now and it's hooked up to the main breaker before it goes into breaker box is this okay it was done in 1959

Okay the AC quit working and I never did find a throat breaker go out by the AC unit in the box on the wall is sizzling I follow the line all the way back to where it hooks up to the line that is running between the meter and the breaker box in the…
Sidney
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How does high static ductwork ( Mobile home) affect AC Seer rating?

I was told that mobile home ductwork affects the seer rating of central air units. So if a 13/14 seer or higher is installed what is the usual seer rating if installed in a mobile home? I was also told if you want to use higher seer equipment to…
Michael Weaser
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Air Conditioner - water standing in condenser housing

After clearing out the overflow pipe, I still had a problem because water has started dripping in places not directly over the drain pan. I "extended" the coverage with sheet metal, but the water is still dripping from somewhere that I can not yet…
Joseph Filip
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The A/C thermosat screen is blank . What can I do before calling an HVAC technician?

My A/C unit is completely separate from the heater with a different thermosat. The A/C thermosat needed new batteries. I put in new batteries and nothing the screen is blank so I changed the batteries again still nothing. What can I do before…
Renee
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Convert 2 individual single stage systems into 1 2-stage zoned system - does it make sense?

My home is 3600 sq/ft, 2-story brick house in Houston, TX. Currently I have 2 single stage 10-seer Trane units with a 100K BTU furnace with 4-ton blower in each: one for upstairs and one downstairs.The units have lasted a very long time. Both were…
pczeus
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Length of insulated copper line set for a central air conditioner

How long can a insulated copper line set for a central air conditioner be outside the home? Is there any problem with it being as much as 10 ft.?
bob Brown
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Air Conditioner question

Is it typical for 1 of the (pipe) lines from my outdoor AC unit to have condensation? The AC tech added 1Ib of freon yesterday. Don't know if this has anything to do with the condensation.
Norah
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Change AC Filter size

Our central air furnace/cooler (Lennox Elite CH33-42B-2F) takes 4" filters. They can work out quite expensive, so my question is, will the system work just as well if I change to standard 1" filters, or is there something else in the equation that…
PeteCon
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