Venting A Bathroom Exhaust Fan Through Soffit

Behind a soffit vent. I did not want to punch a hole into the roof so i ran the exhaust over to the soffit and installed it there with a vent. If you need to install a new duct for venting your bathroom exhaust through the soffit then you should verify the duct size used with your bathroom fan.

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It was just venting into the attic.

Venting a bathroom exhaust fan through soffit. 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. Shirlock homes apr 10 12 at 10 09. And the closer the termination is to the soffit vents that supply ventilation air to the attic the more likely that moisture from the bathroom will be drawn into the attic. Behind a gable vent.

In cold weather it forms icicles. The soffit vent system solves a long standing problem in the building industry. As the warm moist air leaves the bathroom through a soffit it leaves in a downward motion. How to vent a bath fan through the roof this old house duration.

And while both a roof vent and an overhang vent perform this task there is one big difference. Soffit exhaust vent duration. The point of a bathroom exhaust vent or any vent really is to remove hot moist air from the house. When a bathroom exhaust duct terminates in a soffit it drips.

Dundas jafine installation video. When i put in a new exhaust fan in our bathroom the builder never put any exhaust to the roof. The damage caused by venting a bathroom exhaust fan to a soffit. Options for venting a bathroom exhaust fan include best to worst.

A down through soffit exhaust vent design by leaving warm air in the exhaust duct when the fan is off creates a heat trap that reduces heat loss out of the bathroom through the exhaust fan duct when the fan is off in comparison with up routed vents or even horizontal vents through a gable end wall. The soffit vent system is an adapted termination that now gives builders and homeowner the ability to vent bathroom exhaust fans through the soffit without running the risk of the exhausted air from going back into the attic. Gary explains how to vent a bathroom fan through the soffit. It completely defeats the purpose if warm wet air is sucked right back in the attic by an adjacent soffit vent.

That s why wall terminations are preferable to soffit terminations. Hd and lowes sell soffit vents. If your bathroom fan is high powered it may use large duct sizes like 4 or 6. Dundas jafine 165 638 views.

Through the roof or an exterior gable wall. Exhaust fan through soffit in a fixer upper tlf 17 duration. Many old bathroom fans still use the small duct sizes of 3. Venting through a soffit is often done but this vent should be isolated from intake soffit vents by several feet at a minimum.

Florida home 30 years.