Why would there be 2 air returns in a bedroom with only 1 supply?
I recently purchased a tri-level home built in 1962. It hasn’t seen a lot of love over the years so I’m trying to make some cosmetic improvements before moving in. In each of the 3 bedrooms there are 2 air returns, one near the floor and the other directly above it about 6 feet up, on the wall opposite the supply registers. For aesthetic reasons I would like to close off the upper returns but hesitate to do so without understanding why there are 2 of them and is closing one an OK thing to do. Any advice would be appreciated.
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