Bathroom Vents To Attic Or Outside

So can you vent a bathroom exhaust fan into the attic.

Bathroom vents to attic or outside.

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. Bathroom code does address the issue of moving odor and moisture laden air from the bathroom to the outside. Surprisingly bathroom fans are not required by some building codes. You may be able to configure a short route.

The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. This can also cause mold to form on wood or insulation in an attic space above a bathroom. 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. A grille in each bathroom attaches to ducts which then fasten to a y connector at the fan.

We explain how to install bathroom exhaust fans or vents the vent ducting. But while you can t have two fans with one vent you can make one fan and one vent serve two bathrooms. Vent your bath and kitchen exhaust fans through the roof through a special roof hood. How to install a bathroom vent fan.

This setup requires an in line centrifugal fan mounted in the attic drawing air simultaneously from both bathrooms see photo. Options for venting a bathroom exhaust fan include best to worst. 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. There are really only three venting options.

The location of the bathroom will determine how extensive the ductwork will be. Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot. No matter the location of the bathroom you can vent the exhaust fan through the wall. Your attic is not a temperature controlled environment is never the same temperature as your living space and generally closer to the temperature outside.

Mold in a bathroom can be caused by a plumbing leak but splotchy stains on wall or ceiling surfaces usually indicate inadequate ventilation too much moisture in bathroom air. 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. No you cannot vent your bathroom exhaust fan into the attic. Bathroom exhaust fans perform an important function by removing excess moisture from your home.

You should never exhaust the bathroom fan directly into the attic.