Cfm Bathroom Fan Calculator

Determine the required cfm for your bathroom fan.

Cfm bathroom fan calculator. Simply enter the dimensions of your bathroom in the calculator below to determine the minimum size vent fan you need for the bathroom in your home. Suggested cfm for the bathroom is based on cycling all the air in the bathroom 8 times per hour. The bath fan calculator is standard guide to help you find the minimum fan rating for your specific bathroom. Cfm calculator bathroom exhaust fans don t require nearly as many cfm as a kitchen range hood but their importance should not be underestimated.

When installing a vent fan make sure there s at least a 1 2 gap under the bathroom door. Whether exhausting air or bringing fresh air into a structure the calculation produced should help to figure out the size of fan s required to accomplish the air exchanges needed. Use our handy online calculator to see what size vent fan you need for your home. This fan calculator is typically used to calculate the cfm or cubic feet per minute of air exchange that may be desired in a building.

An effective bathroom fan should be capable of replacing the entire volume of air 8 times per hour or every 7 5 minutes. That s why we developed this handy bathroom vent fan cfm calculator. To arrive at your required cfm simply divide your bathroom s volume by 7 5. The higher the bath fan rating the more air can be vented out of the bathroom which means less moisture and mold build up.

They re most commonly found in bathrooms and rid them of moist air produced by your bath shower or sink.