Bath Fan Vents To Attic

Bathroom exhaust fans perform an important function by removing excess moisture from your home.

Bath fan vents to attic.

The lowdown on venting your bath fan into an attic is that it can be done but it should terminate on the outside. Vent your bath and kitchen exhaust fans through the roof through a special roof hood. In fact i have seen numerous houses that haven t yet had signs of mold with the bath fan venting incorrectly. This article describes routing bath exhaust fan duct upwards through an attic or roof space or downwards through a floor or crawl space.

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. No you cannot vent the bathroom exhaust fan into the soffit vents. The truth about attic bathroom venting. But while you can t have two fans with one vent you can make one fan and one vent serve two bathrooms.

In all cases the ducting needs to conduct the exchaust to the building exterior and needs to terminate in an animal proof vent cover. Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out. Can you vent a bathroom exhaust fan into the soffit vents. I would by lying if i told you that it will cause problems it may be totally fine.

This setup requires an in line centrifugal fan mounted in the attic drawing air simultaneously from both bathrooms see photo. If you vent the bathroom exhaust fan to close to the soffit vents which are vented plates under your homes outer edge and roof your home the air can be sucked right back into the attic from the soffit. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood.