Installation Bathroom Exhaust Fan Venting Options

Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot.

Installation bathroom exhaust fan venting options. Bathroom exhaust fan venting code summary section r303 3. For that length i don t think you need to worry. Ductwork is what will connect the fan to the outside. I d recommend venting out the gable.

Note that the bathroom vent fan must always exhaust to the outdoors. This type of bath fan doesn t exhaust air to the exterior. There are really only three venting options. Bathrooms must have windows when this section is adopted by a community it essentially says that for venting purposes bathrooms must have windows that open.

If you have access to the attic the fan can vent either through a gable wall or roof. The warm air will exhaust out the duct and enter back into the attic through the soffit vent or ridge vent. Run a rigid vent from the gable wall to a point near your install and use a 2 piece of flex duct to connect the fan to the rigid vent. There aren t many options for routing an exhaust fan to the outside of the house.

In this particular installation tom ran the exhaust duct into the attic and through a sidewall to the outdoors. A recirculating bath fan would be a workable option for a half bath because there s no shower to fill the space with moisture. Avoid venting through a soffit vent or ridge vent. 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.

Other ventilation options are windows and fans that blow the air into another room. The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood. Never allow the duct to simply blow into an attic crawlspace or. Bathroom ventilation is required by law to prevent the buildup of mold so ducted ventilation is one option people have.

Bath vent fan installation building codes bath vent fan troubleshooting bath vent fan repair. Instead it passes bathroom air through a filter medium that removes odors. Letting the fan exhaust into an open attic will cause moisture buildup on the underside of the roof. Reduce noise with an inline fan.

Install a recirculating fan in a half bath. Options for venting a bathroom exhaust fan include best to worst. We explain how to install bathroom exhaust fans or vents the vent ducting. 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.

The flex duct makes the bends easy don t kink it and allows the fan to be repaired from below in the future. Based on where your bathroom is located in your home you may have no other options except ducted ventilation. How to install a bathroom vent fan. Bathroom exhaust fans perform an important function by removing excess moisture from your home.