Venting Fans Into Attic

It can quickly remove a larger volume of hot and or humid air from your attic when compared to static ventilation.

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. One thing with ridge vents installed in older home they didn t address. The lowdown on venting your bath fan into an attic is that it can be done but it should terminate on the outside. The result is a cooler attic space with plenty of air exchange.

No you cannot vent the bathroom exhaust fan into the soffit vents. 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. In fact i have seen numerous houses that haven t yet had signs of mold with the bath fan venting incorrectly. The master flow erv5 power roof vent is the master flow erv5 power roof vent is a great overall investment in attic ventilation.

But while you can t have two fans with one vent you can make one fan and one vent serve two bathrooms. 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. This in turn can help save money on your heating and cooling costs. You d often blow air from one bathroom into the other and local building inspectors wouldn t approve it.

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. This setup requires an in line centrifugal fan mounted in the attic drawing air simultaneously from both bathrooms see photo. Second during cold winters you ll be blowing warm moist air onto a cold surface the roof vent and roof plywood. The altered more powerful airflow blasts decades old dust through every crevice it can find.

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. First you ll partially block your roof vent with the piping reducing the flow of cooling air through your attic. 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. 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.

Attic fans perform this ventilation by pushing hot air out into the environment while also pulling fresh cool air into the attic.