Agree About Not Closing Vents

https://blogfreely.net/yenianhejf/signs-your-ac-needs-repair-in-north-fort-worth-before-you-call-comfort-experts-9pr5

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