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this post was submitted on 10 May 2024
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Home Improvement
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You could set up a range hood In the old fireplace/chimney to push air upstairs, they usually have a few speed settings. Or you could use an inline fan duct plugged into a variable speed controller. If you go big (500 cfm+? Depends on where you are) you may need to consider adding makeup air as well
If there’s no exhaust to outside, there is no air lost to makeup.
Proper functioning of the duct will require the source and destination rooms leave a door open to the rest of the house.