In Attic Bathroom Exhaust Fan

Several different ways you can move that hot air to the outside.

In attic bathroom exhaust fan.

Most roof overhangs today have continuous soffit ventilation strips. Condensate may also be dripping off the exterior surface of the vent duct in attic or crawl space. Section 1203 4 2 1 of california s building code requires all bathrooms with a bathtub shower spa or similar fixtures to be ventilated by an exhaust fan. The fan is able to accommodate anywhere from 1 200 to 1 800 square feet of attic space.

Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside. It seems like such an easy solution just leave a bathroom vent hose in an attic. You ve now put the water right back up into the attic without realizing it. In those areas ventilation in bathrooms is required but it can be from a window or fan your choice.

You ve now put the water right back up into the attic without realizing it. Each fan vents separately out the roof. Both bathrooms are vented by a single in line fan that has one exhaust vent running through the roof. No you should not vent a bathroom fan directly into an attic.

Surprisingly bathroom fans are not required by some building codes. It can cause you a lot of problems with mold and mildew forming on the underside of your rafters and decking as well as getting into your insulation. You should never exhaust the bathroom fan directly into the attic. No you cannot vent your bathroom exhaust fan into the attic.

Air vent 18 inch dia electric gable vent fan courtesy of home depot. However you can vent a bathroom fan through an attic while it terminates on the roof or gable end. Bath exhaust is almost always warm and this air will float up and into the soffit ventilation openings. Each bathroom has its own exhaust fan.

As warm moist air moves through a fans vent system in the attic the duct often become cooler especially in the winter thus condensate may form and drip back down through the fan itself. It s perfect for reducing cooling costs as it pulls fresh air from outside and expels warm attic air out through the exhaust vents. Bath exhaust is almost always warm and this air will float up and into the soffit ventilation openings. One in line centrifugal fan can be mounted in the attic to exhaust the moisture from two bathrooms.

It s all outdoor air anyways right. 2 moisture droplets dripping from the exhaust fan or ducting.