Tuesday, July 25, 2017
What Is The Purpose Of The Vent Grille Over The Bedroom Door?
It’s called a transfer grille and provides an opening from the bedroom to the hallway for air to return back to the air conditioning air handler or furnace when the supply register (vent) in the ceiling of the bedroom is blowing conditioned air into the room. If it wasn’t there and the bedroom door was closed, the only way for air to return to the air handler would be through the narrow undercut slot below the door. The door undercut does not provide a sufficient opening, so the room would become somewhat pressurized and would not receive as much conditioned air as rooms that had an open return air flow.
Another way to achieve good air flow in rooms with a closed door is called a jump duct.
Van Hibberts, CMI
Certified Residential Building Code Inspector ICC-5319905
IBHS Fortified Certified Inspector #FEV32561020109
ARA Certified Inspector #20302 (Applied Research Associates)
Florida-State Certified Master Inspector Lic. #HI 89
Certified Owens-Corning Roof Data Inspector
Florida-Certified Wind Mitigation Inspector
WDO Certificate #JE190791
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Gulf Breeze, Florida 32561
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