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Should You Close Vents in Unused Rooms?
Written by Luke Daugherty
Edited by Hannah Whatley
Last updated 03/30/2023
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Key Points
- Does closing vents in unused rooms help? The answer is no: In reality, it may hurt your HVAC system, lead to costly repairs, and cause other problems.
- Closing vents for extended periods causes air pressure buildup, which can lead to air leaks, mold growth, and even increased radon levels.
- To keep air flowing through your home and save on electricity bills, don’t close your vents more than 75%.