External roof stack fan.
Posted by Brian on December 11, 2003 at 15:56:18:
I have a large stack (12 in.)high rise on my 5 year old home. All ceilings are vaulted. The fan on top the stack seems to be just pulling air from that joist area. The fan was making terrible racket, so I unplugged it. Am I going to cause damage or cause hazardous environment?
Let me know


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