Dripping water is either condensation
(usually due to cold ductwork or
improper duct installation), or a
problem with the seal on a wall or
roof vent. Insulated ductwork can
help solve condensation problems,
and running the fan longer will
ensure moisture is completely
removed from the duct. Ductwork
should slope down toward a wall
vent to direct condensation out of
the exterior vent opening rather
than back into the fan housing.
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