Bathroom Duct To Attic Gable Vent

And of course a bathroom with a window doesn t require an exhaust vent.

Bathroom duct to attic gable vent. Bathroom exhaust venting does not have to exit up through the roof and in fact that s not necessarily even the best termination. A 3 or 4 inch duct connects to the outlet on the fan housing and runs to a side wall or to the roof and connects to a vent cap that allows the exhaust to disperse outdoors. Bathroom exhaust fans perform an important function by removing excess moisture from your home. The resistance to the airflow in the long duct caused the air to back up in the nearest bathroom especially when more than one fan was on at the same time.

The bathroom exhaust ventilation fan disperses air through an opening in the fan housing which is usually 3 inches in diameter and ideally faces in the direction of the ventilation system outlet. The best way to vent bathroom fans is with schedule 20 bell end drain pipe. Crawling in the attic revealed the connection of four bath fans into one long duct going to a gable vent. No you cannot vent the bathroom exhaust fan into the soffit vents.

Depending on how the attic ventilation is designed the hot moist air exhausted from the duct could be drawn back into the attic through the gable vent. First off you ll be reducing the size of the gable vent. 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.