Bathroom Exhaust Fan Duct Routing

Options for venting a bathroom exhaust fan include best to worst.

Bathroom exhaust fan duct routing. Avoid venting through a soffit vent or ridge vent. The fan and light operate separately or together and are housed in a classic white design that complements any decor. Letting the fan exhaust into an open attic will cause moisture buildup on the underside of the roof.

When venting a bathroom exhaust fan make sure to vent the air to the outside rather than into your attic where it can cause mold and mildew to form. The fan must vent to the building exterior. Through the roof or an exterior gable wall.

Depending on the location of the bathroom it may be easy to vent the exhaust fan through the roof. Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out. Bath exhaust fan duct length specifications and restrictions are discussed separately at bathroom vent duct lengths.

This involves running ductwork from the fan usually though an attic and out through the roof. It eliminates the need for routing ductwork through the house and these fans usually dry the bathroom more quickly. If you have access to the attic the fan can vent either through a gable wall or roof.

In all cases the ducting needs to conduct the exchaust to the building exterior and needs to terminate in an animal proof vent cover. The warm air will exhaust out the duct and enter back into the attic through the soffit vent or ridge vent. This article describes routing bath exhaust fan duct upwards through an attic or roof space or downwards through a floor or crawl space.

The nutone white 50 cfm exhaust bath fan the nutone white 50 cfm exhaust bath fan with light combines efficient air circulation and up to 100 watts of illumination in one easy installation. Please see bathroom vent duct routing.