Exhaust Fan Through Gable Vent

Crawling in the attic revealed the connection of four bath fans into one long duct going to a gable vent.

Exhaust fan through gable vent.

This will help reduce the humidity in your roof reducing the risk of damaging your roof. An exhaust vent fan can exhaust out through a gable end side wall or out through a soffit overhang. Exhaust vents releasing all of the heat that rises and gets trapped in the attic can be achieved with one or a combination of the three following vent models in addition to the multipurpose gable. When gable end vents are combined with soffit vents this can keep a continuous air flow through your roof or attic.

Through the roof or an exterior gable wall. Whatever area you block with the exhaust duct is a reduction in the area of the gable vent. I recommend that my clients vent their bath fans out a gable wall if at all possible when not using an hrv or erv that is. And of course a bathroom with a window doesn t require an exhaust vent.

However your roofer is correct that bathroom exhaust venting is desirable to avoid indoor moisture problems that can extend to the attic roof sheathing and can affect roof life. 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 best way to vent bathroom fans is with schedule 20 bell end drain pipe. These pipes come in 10 foot length and the bell end must face the fan.

For pricing and availability. Sunlight 25 watt solar gable fan. Shutter exhaust fan with thermospeed controller 65 watt 960 cfm model ilg8sf12v st 99 00. 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.

Iliving 242 cfm silver electric powered gable mount shutter fan vent model ilg8sf7v 68 75 68 75. The cooler outside will be allowed to be sucked through your soffit vents and expel the hotter humid air through your gable vents. Options for venting a bathroom exhaust fan include best to worst. If you vent through the roof condensation will drip back into the interior.

New iliving 12 in. Find gable vent fans at lowe s today. First off you ll be reducing the size of the gable vent. Iliving 16 wall mounted exhaust fan automatic shutter variable speed vent fan for home attic shed or garage ventilation 1200 cfm 1800 sqf coverage area 4 6 out of 5 stars 285 109 77 109.

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.