How Long To Install A Bathroom Exhaust Fan?


Since heat and steam rise, bathroom exhaust fans are best installed in the ceiling. When installing a bathroom fan where one doesn’t currently exist, an electrician will have to cut a hole for it and add new wiring. This will take 2 to 4 hours on average, but could take longer depending on your home’s structure.

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Frequently Asked Questions

How long can I run a bath fan?

Typically in all bath fans I seen go in, a 30' run was allowed IF there was no elbows used. If elbows are used, which will be pretty much the case in any install, you need to deduct 5' for each elbow added. For example, if a given run needs 3 elbows, your total length of run cannot exceed 15' and still have an effective draw.

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