Do i need to have it recharged with freon? Or do i have a small leak? Or could it be the thermostat? My husband thinks it might be the new thermostat because it is an energy star and he thinks that maybe it isnt kicking out the cold air like it did with the old thermostat because in the long run it saves money?.. I need help because i dont know what to do. I am worried about bringing someone into the house because i have heard the horror stories of being ripped off and not getting it done correctly.