08/19/2026
Myth: Closing vents in unused rooms saves money
Actually, it often does the opposite. Closing too many vents can raise pressure in the ductwork, make the system work harder, can cause grills to sweat, and sometimes even damage the blower motor over time.
Better options:
- Use a smart thermostat with room sensors
- Make sure returns arenβt blocked
- Get the system balanced if some rooms are always too hot/cold
Whatβs an HVAC "myth" youβve heard? Iβll debunk a few in the comments.