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There is water dripping from my bathroom exhaust fan. What do I do?
This is typically attributed to one of two causes:
1. When hot air is being exhausted from the bathroom into cold ducting, some condensation might form that will travel back through the ducting, into your unit. This can usually be avoided by wrapping the ductwork with insullation, limiting the amount of condensation.
2. In cold climates, ice can form on the roof or wall cap. When the hot air from the bathroom travels across this ice, it melts and travels back down the ducting into your unit. This is a more difficult situation to correct and some dripping might occur. To help minimize the dripping, use a roof or wall cap with a backdraft damper and if possible face it away from the normal direction of the wind during the colder months to avoid ice and snow from building up around the opening.