Agree About Not Closing Vents

https://deanrfqs563.valoradigest.com/posts/comfort-experts-explains-strange-ac-noises-and-ac-repair-in-north-fort-worth-2

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