Agree About Not Closing Vents
https://devinupjp314.cavandoragh.org/comfort-experts-ac-repair-north-fort-worth-family-owned-since-1962
Agree About Not Closing Vents Agree with the point about not closing too many vents. I used to shut them in the guest rooms to cut energy use, and the system started whistling and running longer. Opened them back up and things calmed down