Need help. Just installed new 3 ton for 1300sf home.(I know, oversized slightly) but wanted to cool home faster and colder. Old unit wouldn't cool home. I also don't have enough insulation in house.

Why doesn't the air out of the vents come out cold? Have temp. set at 77 on a 98degree day. Intake says 77degree but air out of vents only 67. That's a 10degree difference. Any one know why?

System is a Goodman 3 ton,14 seer. Tech says this is normal for a 14 seer. True?

[Edited by joe 40 on 08-21-2005 at 05:14 PM]