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Heating & Air Conditioning
atdev

Caulk around air return?

atdev
11 years ago

Our upstairs air conditioning unit is in our basement and sits on the concrete slap. The return air duct connects to the bottom. However the bottom has a small gap where it meets the concrete and air is getting sucked in through there all around the edges. Should I caulk around this with silicone? Pictures with notes...

Comments (2)

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