Venting Fans Into Attic

If you re tempted to vent your exhaust fan through an existing roof vent or even vent it into the attic don t do it.

Venting fans into attic.

Ever since a roofer talked my husband into replacing the broken attic fan with a ridge vent we re getting tons of dust in the living areas. But while you can t have two fans with one vent you can make one fan and one vent serve two bathrooms. One static vent style is the turbine vent which uses wind to power its enclosed fan all it takes is a light breeze to rotate the blades and suck heat out of the attic view example on the home. First you ll partially block your roof vent with the piping reducing the flow of cooling air through your attic.

This in turn can help save money on your heating and cooling costs. It can quickly remove a larger volume of hot and or humid air from your attic when compared to static ventilation. Second during cold winters you ll be blowing warm moist air onto a cold surface the roof vent and roof plywood. The result is a cooler attic space with plenty of air exchange.

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. 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. This setup requires an in line centrifugal fan mounted in the attic drawing air simultaneously from both bathrooms see photo. Can you vent a bathroom exhaust fan into the soffit vents.

In fact i have seen numerous houses that haven t yet had signs of mold with the bath fan venting incorrectly. I would by lying if i told you that it will cause problems it may be totally fine. One thing with ridge vents installed in older home they didn t address. Bathroom exhaust fans perform an important function by removing excess moisture from your home.

The master flow erv5 power roof vent is the master flow erv5 power roof vent is a great overall investment in attic ventilation. You d often blow air from one bathroom into the other and local building inspectors wouldn t approve it. The lowdown on venting your bath fan into an attic is that it can be done but it should terminate on the outside. Attic fans perform this ventilation by pushing hot air out into the environment while also pulling fresh cool air into the attic.

No you cannot vent the bathroom exhaust fan into the soffit vents.