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.
Vent bathroom fan through wall.
From outside use 4 inch hole saw to cut hole for wall cap.
Options for venting a bathroom exhaust fan include best to worst.
If you vent through the roof condensation will drip back into the interior.
If your exterior siding is vinyl or fiber cement you will have an easier time cutting the hole.
Through the roof or an exterior gable wall.
You may be able to configure a short route.
In this video this old house general contractor tom silva explains how to vent a bathroom fan.
The location of the bathroom will determine how extensive the ductwork will be.
No matter the location of the bathroom you can vent the exhaust fan through the wall.
180 cfm through the wall exhaust fan with on off switch the broan direct discharge 180 cfm utility the broan direct discharge 180 cfm utility through wall fan can be used in rooms up to 160 sq.
Broan nutone 180 cfm through the wall exhaust fan model 509 65 27 65 27.
Drive nail through house wall from attic.
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.
This will serve as a reference point for positioning the wall cap.
To remove excess moisture from your bathroom the fan needs to vent outside.
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.
Delta breez greenbuilder g2 series 80 cfm wall or ceiling bathroom exhaust fan with adjustable humidity sensor energy star model gbr80h view the delta breez bathroom exhaust fans 93 20 93 20.
Amazon s choice for through wall bathroom exhaust fan broan nutone 512m through the wall ventilation fan white square exhaust fan 6 0 sones 70 cfm 6 4 5 out of 5 stars 765.
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The 180 cfm fan helps improve airflow with a powerful 6 1 2 sones motor.
Ductwork is what will connect the fan to the outside.
Apply caulk around the backside of the wall cap.
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.