For the past 3 days my air condition has found it hard to cool my house. The air coming out of the vents is registering at 62.5F. However my house is staying at 77-80F. The thermostat is set at 74-75F. Why is is not able to keep up all of the sudden. No one seems to be able to tell me anything. I have had repair men out and no help. Thanks, erik

What is/has the outside temp. been?
Are all the vents blowing about the same pressure?
If not look or have someone check to make sure that no ducts have come loose
Is this the first time this prob. Has happened?
In very hot weather sometimes its hard to keep the house 15-20 degrees cooler than the outside

The temp outside has only been about 10 degrees warmer that inside settings. Duck work in inside vapor barier and cannot be visualized. Anymore advise

How about the ducts,, are they all blowing about the same?
Do you live in a mobil home?

Change your filter latly?

Maybe it needs a good cleaning too?!