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Bedroom door air vent.
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Friday july 27 2018.
Some of that air will find its way under the door and through interior leaks back to the central return vent.
When you shut a door the air that s still blowing out of the vent builds in the room pressurizing it.
It becomes positive relative to the main part of the house and probably also to the outdoors.
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The perfect balance in door return air pathway is a grille installed into the bottom of interior doors.
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.
What is the purpose of the vent grille over the bedroom door.
This removes hot and cold spots within the home improves the hvac system s performance reduces energy use improves indoor air quality and adds comfort to your living space.
At the same time the return is making an extra effort to suck in enough air to cool the entire house not just the rooms with open doors.