I've spent a couple of days at my daughters trying to lower her elec. bill. Sealing attic ductwork, more insulation etc. I caught the outdoor temp. @ 47 this morning so I checked the temp rise at the air handler and 18 degree is all it would do.
She has a 2 ton 10 seer unit. I phoned the only HVAC guy I know and he seemed to think its performing as it should. I've done some online research and the output should be 22k btu @ 47 degrees, which on paper is a 24 degree temp rise.
I'm sure there's variables, but would 18 degrees be considered an acceptable temp rise? Any response welcomed, and thanks.