Agree About Not Closing Vents
https://manuelvwth616.keystonescope.com/posts/comfort-experts-explains-capacitor-and-contactor-failures-in-north-fort-worth-ac-repair-5
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