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Hole in ceiling around Central Heat
I have central air and Heat (nat gas) installed in a closet in my hallway.
Where the ductwork (plenum?) goes through the ceiling, there is a space all around so that I can see all the way to the rafters.
Shouldn't this space be closed in and sealed to keep the cold attic air from falling in on the furnace and to keep the warm air from rising into the attic space?
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