AC won't stop running...
My home is 1742 sf, was built in 1968, single level with an attic above and crawl space beneath. My ac has always run more than I believe it should. 3 years ago, I called a local HVAC company to check it for me. They said right away that my duct work needed replacing as it is old and leaking. So, I had a brand new duct system installed. That didn't help.
Last year, I had them return and they said that my unit was borderline for the size of my home. The size of the unit then was 2.5 ton. So, I put in a 3 ton Goodman ac unit. That didn't do the trick.
Two weeks ago, I had Simonton vinyl replacement windows installed. Double pane, low E, Argon etc. That has not helped. Yesterday it was 91 degress here, my thermostat is set on 76, my ac came on at 10:30 a.m. and it ran for 13 hours non stop.
I was told to have the insulation in my attic checked. There is about 6 inches of insulation up there and it is the blown in type. Someone also suggested an attic fan. I have vents at the gable ends, but I do not have any vents in the soffits. They said soffit vents would help with "passive" venting.
Oh yeah, underneath the house is well insulated. I am really frustrated here. I have spent more than $10,000 in the last three years trying to solve this problem.
The only area left to check, is the attic. That has to be my problem....right?