Bathroom Exhaust Fan Attic Venting

Also the code numbering in your area may differ from those.

Bathroom exhaust fan attic venting.

The truth about attic bathroom venting. Each bathroom has its own exhaust fan. The lowdown on venting your bath fan into an attic is that it can be done but it should terminate on the outside. Building code is a model code that each community can adopt and adapt according to its own needs.

Each fan vents separately out the roof. To determine which size fan to buy for your bath multiply the room s square footage by 1 1. The bathroom here is below an accessible attic so tom ran the exhaust duct across the attic and out a gable end. Ceiling fans vent either into the attic or outside through the roof.

If you have a bathroom with a separate enclosed toilet you ll also need an additional fan for that space. Vent your bath and kitchen exhaust fans through the roof through a special roof hood. Can you vent a bathroom exhaust fan into the soffit vents. If you have two bathrooms that are close together and one has an exhaust fan and the other doesn t you might be.

There are wall mount exhaust fans as well as ceiling exhaust fans. Bathroom exhaust fans perform an important function by removing excess moisture from your home. I would by lying if i told you that it will cause problems it may be totally fine. It eliminates the need for routing ductwork through the house and these fans usually dry the bathroom more quickly.

One in line centrifugal fan can be mounted in the attic to exhaust the moisture from two bathrooms. In fact i have seen numerous houses that haven t yet had signs of mold with the bath fan venting incorrectly. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. Another consideration to think about is the placement of your fan.

This involves running ductwork from the fan usually though an attic and out through the roof. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. No you cannot vent the bathroom exhaust fan into the soffit vents. Broan nutone exhaust ventilation fans allow your home to exhale eliminating humidity odor and airborne particulates from your bathrooms closets mud room laundry work out space and more.

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. Bathroom vent fans are rated by how many cubic feet of air they can move in one minute known as the cfm rating. Ventilation fans improve indoor air quality by venting moist air quickly outside which helps to control mold and mildew growth. What is the bathroom exhaust fan venting code.

So you will need to check with your city or county planning and permitting department to find out code requirements regarding bathroom fans.