Can You Exhaust Bath Fan Into Attic

In those areas ventilation in bathrooms is required but it can be from a window or fan your choice.

Can you exhaust bath fan into attic. Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside. After a while all that moisture will condense on this equipment and this is a recipe for disaster. If you re simply replacing the fan the ducts should already be set up for you. No you should not vent a bathroom fan directly into an attic however you can vent a bathroom fan through an attic while it terminates on the roof or gable end.

Surprisingly bathroom fans are not required by some building codes. Before you can start replacing your old bathroom fan you ll need to determine what the fan size is. Bathroom exhaust fans perform an important function by removing excess moisture from your home. No you cannot vent your bathroom exhaust fan into the attic.

This article describes routing bath exhaust fan duct upwards through an attic or roof space or downwards through a floor or crawl space. In no case is it acceptable to just dump any exhaust fan directly into an attic. Options for venting a bathroom exhaust fan include best to worst. Can i vent a bathroom fan into my attic.

On 2020 02 26 by anonymous. The exhaust needs to vent outdoors. 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 matter the location of the bathroom you can vent the exhaust fan through the wall.

All the moisture from your bathroom will be discharged into the garage. You should never exhaust the bathroom fan directly into the attic. In all cases the ducting needs to conduct the exchaust to the building exterior and needs to terminate in an animal proof vent cover. There are really only three venting options.

It needs to exhaust to the exterior. Anon if i understand your original question you have a bath exhaust that is discharging into a roof cavity or space not to outside. All municipalities have different requirements but some do not draw a hard line on requiring exhaust fans. Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out.

Allowing the exhaust to vent into your attic can potentially cause several moisture problems. But while you can t have two fans with one vent you can make one fan and one vent serve two bathrooms. This setup requires an in line centrifugal fan mounted in the attic drawing air simultaneously from both. There aren t many options for routing an exhaust fan to the outside of the house.

It seems like such an easy solution just leave a bathroom vent hose in an attic.