Guys I have a problem with my A/C unit atleast I think it is a problem.
I have a RHeem 3.5 ton A/C unit atleast 19 yrs old and I have noticed that its cooling performance drops significantly during hot days. If the outside temp is 90 and above and if I set the temp at 75 deg F it seems to run for long periods of time before cooling to the set temp, sometimes like 5 to 6 hrs.
If the temp outside is below 80 then the unit has no problem cooling down to even 70. So hot days works very very hard, nights works fine
The A/C tech checked my freon levels and said it is OK so what gives is it the age of the unit or is my house leaking a lot. Please help.
My home is 1600 sq ft single story and built in 92. Thanks.