Moontoad
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I have a two-year-old home which has vent fans in the two bathroom ceilings. We live in a windy area, and the flabber doors on the fans are often banging open and shut. The noise is annoying, but I'm also concerned about the heat loss in the winter. The fans are vented out the roof through a vertical pipe connected to the fans by an insulated flexible ducting above the ceiling. I've tried weighting the flabber doors and that helps some, but I can't weight them enough to solve the problems without restricting flow during normal operation.
So my question:
Is there a fan model that incorporates a powered vent door that opens only when the fan is on? Or is there some other fix, perhaps something on the "chimney" that would reduce the vacuum due to wind?
So my question:
Is there a fan model that incorporates a powered vent door that opens only when the fan is on? Or is there some other fix, perhaps something on the "chimney" that would reduce the vacuum due to wind?