We purchased a VERY Old house (1921) and everything is ok on it so far, we updated almost everything inside and out, we even have a brand new A/C unit, my question is: Why the AC runs all the time?, i know that when is 100 degrees outside you can't help it but i think it's not right to be running for like 30 minstops for 5minand starts again, is this ok?, i know is not! but can someone give me some advice?, the last thing i did was cellulose in the attic (like 10quot;), the ceiling is 9 feet tall, we have ceiling fans all over the house (ac is 2,5 ton) , BUT!, the last thing i saw was THE WALLS!!!, they are about 3 inches thick!!!Since it's a wood frame, stucco on the outside, and 1/2 inch new drywall and that's IT?, can THAT be the problem on why we can't keep the house COOL?, no leaks on windows (brand new)Can i add 2x4 studs, insulation and then another layer of drywall to make it feel better???, what's the solution here??? Thanks for ALL the help.
there are lots of things that it could beI'd start by checking the ducts in the atticYou may have duct leaksIt's not just the supply air (cold air into home), but the return air as well (warm air being brought to a/c unit to be conditioned)Keep in mind that your air conditioner will only change the air temp by about 18-20 degrees compared to what is coming into itExIf your home is 90 degree when you turn on your a/c, the air coming out, will only be about 70 degrees, no matter what your thermostat is set onIf your home is 80 degrees and your attic is 120 degrees and your return is leaking, sucking 120 degree air into it, that will affect your temp splitYou may not be getting the same 20 degree split between indoor home temp and supply air tempThis would make your a/c run constantlyMost local power companies will come out and do a duct checkAlso, there are other areas besides windows where warm air can invade the homeEx: holes in ceilings for fans, lights, ducts, etcStart by having your local power company out to do some checksThere may be a small fee, but often you receive discounts from the power company for local contractors to repair problems.
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