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Air supply Posted by Harold hydronicnetwork.net on January 5th, 2004 09:25 AM In reply to Chimney smoking down stairs by Gary on January 5th, 2004 09:12 AM [Go to top of thread]
Air has to come from somewhere to feed the fire. If all the windows are closed, an open flue (even though partially blocked by a damper) leaves a great inlet for air, especially a hole directly into the space below the fireplace (that's how air works, you know, cold falls down while hot goes up.) Try opening a window in the room with the fireplace burning to see if the smoking backdraft downstairs stops. Was this post helpful? Yes: or No:
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