Agree About Not Closing Vents
https://veloriftlabs.com/s/VTDm0HKm5lSwQFXqcqODQ
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