Bathroom Exhaust Fan Code Requirements. General lighting fan circuit required. The fan pulls air out of the bathroom and allows fresh air to be drawn in. The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process.
This ventilation code specifies a bathroom exhaust airflow rate for toilet rooms and bathrooms not served by a window of adequate size of. Bathroom ventilation codes require a bathroom exhaust fan to vent to the exterior not the attic for health and structural reasons.
25 or 50 cfm ft for hotels motels resorts and dormitories and a slightly more modest 20 50 cfm for private dwellings.
Bathroom code does address the issue of moving odor and moisture laden air from the bathroom to the outside. Important nec bathroom regulations. This ventilation code specifies a bathroom exhaust airflow rate for toilet rooms and bathrooms not served by a window of adequate size of. 25 or 50 cfm ft for hotels motels resorts and dormitories and a slightly more modest 20 50 cfm for private dwellings.
