How do I install a bathroom exhaust fan?

Cut the Hole. The first step in figuring out how to installa bathroom fan is cutting a hole based on the size of thefan you need. Attach the Fan. Cut a Hole in the Roof. Cut Away Shingles. Install the Roof Vent. Connect the Fan. Wire the Fan. Wire the Switch. Click to see full answer. In this regard, how much does it cost to install a bathroom exhaust fan?Most electricians charge $65-$85 per hour and caninstall a bathroom fan in 2-4 hours, for a total laborcost of $130-$340. In general, replacing an existingfan with a newer model is easier and less expensive becausethe wiring is already in place.Also, do bathroom exhaust fans need to be vented outside? Bathroom vent fans must be vented to theout of doors. Venting this fan into the atticis simply asking for problems. The excessive moisture will causecondensation on the roof members, insulation and eventually causemold. It is never OK to vent directly into an attic even ifthe attic itself is vented. can a bathroom exhaust fan be mounted on the wall? Wall mounted vent fans are available, thoughthey’re not as common as ceiling mounted models and may bemore difficult to install, especially if you have a brick veneerhouse. To remove excess moisture from your bathroom, thefan needs to vent outside.Are bathroom exhaust fans required by code?Surprisingly, bathroom fans are notrequired by some building codes. All municipalitieshave different requirements, but some do not draw a hardline on requiring exhaust fans. In those areas,ventilation in bathrooms is required, but itcan be from a window or fan, your choice.