Installing a Bathroom Vent Fan Through a Wall

We would like to install an exhaust fan in our bathroom to remove excess moisture but do not have an attic to vent it through. Can we install it in an outside wall instead, or are there vent fans available that don’t need an outside vent? -Barb

Hi Barb,

Wall mounted vent fans are available, though they’re not as common as ceiling mounted models and may be more difficult to install, especially if you have a brick veneer house. There are ductless vent fans that use a charcoal filter to remove odors, but they do not remove excess moisture, which is the main purpose of a bathroom vent fan. To remove excess moisture from your bathroom, the fan needs to vent outside.

Since a bathroom vent fan should run for 10-15 minutes after you finish your shower to remove all the moisture, consider a fan that cuts on and off automatically using a moisture sensor or replace the wall switch with a timer.

Good luck with your project,

Danny

Further Information

How to Size a Bathroom Vent Fan
Not Your Old Bath Fan
How to Maintain a Bathroom Vent Fan (video)

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One Comment on “Installing a Bathroom Vent Fan Through a Wall”

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GEORGE Says:
June 19th, 2010 at 12:15 pm

today june 19 2010 i was watching your show on shower scum and soap scum
you were using a car wax car window cleaner not very sure but what brand could you gvie me more infro.

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