You might have a duct that has.become unattached in The attic

Does the unit have a Thermal expansion valve? I had a problem with mine and the TXV made it act very similar


Originally Posted by Wiley Coyote
Well, the way I see it is there's just too many assholes
On a good day there's a bunch of assholes in here.
On a bad day there's too many assholes in here.