Exhaust Fan Venting Into Attic

Vent exhaust fans through a roof hood roof vent hood details.

Exhaust fan venting into attic.

The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a. Installing a vent hood on the roof. You should never exhaust the bathroom fan directly into the attic. No you cannot vent your bathroom exhaust fan into the attic.

Attic ventilation fans help cool air your attic by pushing out the stifling hot air from inside the attic and bringing in cool air from outside. Condensate may also be dripping off the exterior surface of the vent duct in attic or crawl space. This prevents hot air from seeping into your home and driving up the temperature in the living space which reduces the load on your air conditioner. 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.

2 moisture droplets dripping from the exhaust fan or ducting. Either way the vent will have to go directly to the outside and installed with a vent hood cover. Venting a bathroom exhaust fan into your attic is never a good idea here are three better options. The correct way to vent a bathroom fan through an attic is to terminate the vent either to the roof or to the gable wall.

Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside.