Venting Bathroom Exhaust Fan Through Wall

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.

Venting bathroom exhaust fan through wall.

The exhaust duct using solid metal steel in this case is routed through the ceiling out over the wall top down through a soffit or roof eaves overhang and then enclosed against pest entry. If you vent through a soffit where attic vents are often located the moisture will get sucked back up into the attic or roof venting. If your exterior siding is vinyl or fiber cement you will have an easier time cutting the hole. 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.

No matter the location of the bathroom you can vent the exhaust fan through the wall. There aren t many options for routing an exhaust fan to the outside of the house. If you want to vent a bathroom fan through an exterior wall you will have to cut a 3 inch or 4 inch hole with a hole saw drill bit. I recommend that my clients vent their bath fans out a gable wall if at all possible when not using an hrv or erv that is.

Ductwork is what will connect the fan to the outside. Wiring for the exhaust vent fan light is routed to wall switches that in this case will turn on the fan if the light over the shower is also switched on.