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Should You Close HVAC Vents in Unused Rooms?
The truth behind this damaging myth.Written by Faith Foushee
Edited by Aviva Tenenbaum
Last updated August 6, 2025
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Key Points
- Closing house air vents in unused rooms may damage your HVAC system, leading to costly repairs.
- Your heating or cooling system produces the same amount of air regardless of how many closed vents you have.
- Avoid closing AC vents completely to keep air moving and avoid potentially higher energy bills.