No one likes to walk into a bathroom clouded with steam from a hot shower. Besides making you feel sticky, this excess humidity can cause serious problems: Unless it is forced outside, it will end up in the walls, creating the potential for mold and rot. A bathroom vent fan will help prevent these problems by removing excess humidity.
Although older homes incorporated bathroom windows for ventilation, this passive form is inadequate for preventing moisture problems — you need an active ventilation system that will clear the air quickly. One of the most effective solutions is a vent fan that blows air through a duct leading outside. Installing a fan isn’t difficult, but the project requires electrical, duct and roofing work. DIYers with intermediate to advanced skills should be able to tackle the job.
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