Bathroom Vent Air To The Attic

The next thing you need to do is make sure the exhaust is successfully making its way out of your home.

Bathroom vent air to the attic.

Both bathrooms are vented by a single in line fan that has one exhaust vent running through the roof. Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside. However you can vent a bathroom fan through an attic while it terminates on the roof or gable end. Each bathroom has its own exhaust fan.

If you re simply replacing the fan the ducts should already be set up for you. It cannot move air to a crawlspace or attic. Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an attic. Options for venting a bathroom exhaust fan include best to worst.

While this may seem obvious homeowners may out of convenience direct the vent into either of these locations. Dumping bathroom exhaust into an attic or under roof space invites costly mold contamination frost under the roof in freezing climates moisture damage to roof sheathing possibly even plywood delamination or rot roof failures and shorter roof shingle life. 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. Bathroom ventilation codes require a bathroom exhaust fan to vent to the exterior not the attic for health and structural reasons.

Each bath fan should be on a separate 4 or larger duct and the outside vent portion must have a baffle damper to prevent anything from coming into the duct work. One in line centrifugal fan can be mounted in the attic to exhaust the moisture from two bathrooms. No you cannot vent your bathroom exhaust fan into the attic. Allowing the exhaust to vent into your attic can potentially cause several moisture problems.

You should never exhaust the bathroom fan directly into the attic. Each fan vents separately out the roof. It seems like such an easy solution just leave a bathroom vent hose in an attic. It s all outdoor air anyways right.

It may also violate a shingle warranty. Through the roof or an exterior gable wall. Bathroom fan vent code requirements include no venting to attic areas to help reduce mold or structural problems. Hot air exhaust vents located at the peak of the roof allow hot air to escape.

Any person competent in installing an outside vent either thru the roof soffit or gable hip end of the house thru the siding.