Bathroom Vents To Attic Or Outside

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.

Bathroom vents to attic or outside.

Bath vent fan installation building codes bath vent fan troubleshooting bath vent fan repair. Options for venting a bathroom exhaust fan include best to worst. All municipalities have different requirements but some do not draw a hard line on requiring exhaust fans. You may be able to configure a short route.

Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside. Bathroom exhaust fans perform an important function by removing excess moisture from your home. There are really only three venting options. 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.

This setup requires an in line centrifugal fan mounted in the attic drawing air simultaneously from both bathrooms see photo. Ductwork is what will connect the fan to the outside. This can also cause mold to form on wood or insulation in an attic space above a bathroom. Bathroom code does address the issue of moving odor and moisture laden air from the bathroom to the outside.

This article series explains why bathroom vent fans are needed and describes good bath vent fan choices necessary fan capacity and good bath vent fan and vent duct installation details. Surprisingly bathroom fans are not required by some building codes. Vent your bath and kitchen exhaust fans through the roof through a special roof hood. No matter the location of the bathroom you can vent the exhaust fan through the wall.

A grille in each bathroom attaches to ducts which then fasten to a y connector at the fan. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. We explain how to install bathroom exhaust fans or vents the vent ducting. The location of the bathroom will determine how extensive the ductwork will be.

But while you can t have two fans with one vent you can make one fan and one vent serve two bathrooms. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. No you cannot vent your bathroom exhaust fan into the attic. You should never exhaust the bathroom fan directly into the attic.

How to install a bathroom vent fan.