Can I use the same cold air return duct in a wall between two rooms? For example, the duct would run down the wall between the studs and then could I put the register at the bottom of the wall on both sides giving both rooms access to the same return duct?
Can a cold air return be shared by two rooms
central-heating
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Best Answer
I see no problem in doing that, as long as the return duct is sized big enough for the both rooms. I would think it would need to be at least the size of both room supply ducts combined.
An alternative would be to use a Jumper duct.