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return air duct Brian F

1567 Views 1 Reply 2 Participants Last post by  beenthere
I'm in the process of finishing my basement and would like to install a return air duct. where I would like to put the air duct there is a return going to a room upstairs. Can I use the same hole that is cut in that the main duct and use it for the return for my basement also?
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Shouldn't, as it can cause the return of the upstairs return not to pull as much air.
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