Bathroom Exhaust Fan Specifications

Stains thermal tracking or mold growth on bathroom walls and ceilings possibly also on bath vanities and cabinets.

Bathroom exhaust fan specifications. Bathroom select a fan with a 50 to 80 cfm rating. Standard fan sizing bathroom vent fans are rated for the amount of air they can move measured in cubic feet per minute or cfm. If your bathroom is larger than 100 square feet tally the cfm requirements for the individual fixtures to estimate your needs. Of area multiplied by 1 07 yields a 107 cfm bath fan requirement.

And a loud or noisy fan can keep you from using it. Some signs of excessive uncontrolled bathroom moisture include. Choose a fan that can move at least 1 cfm per square foot of room. A 50 square foot or smaller bathroom needs a 50 cfm fan.

The rule of thumb is that you need at least 1 cfm per square foot of room area. For example a 10 x 10 square bathroom floor area 100 sq ft. For example for a 50 79 sq. This section discusses the minimum exhaust capacity of the exhaust fan.

Multiply the bathroom floor area in square feet by 1 07. Determine the required cfm for your bathroom fan. Bathroom select a fan with a 50 to 80 cfm rating. Choose a fan that can move at least 1 cfm per square foot of room.

For bathrooms between 50 and 100 square feet estimate approximately 1 cfm per square foot. The bath vent fan cfm capacity should be slightly more than the number of square feet of floor of the bathroom area being vented. To arrive at your required cfm simply divide your bathroom s volume by 7 5. Damaged bathroom window trim.

For a standard 10ft by 10 ft bathroom with an 8 ft ceiling you will need an exhaust fan capable of 106 67 cfm. Why your bathroom should have an exhausting vent fan bathroom venting fans are about more than just eliminating noxious odors. More on this below a quick example. Standard fan sizing applies to bathrooms that are 100 square feet or less.

A dingy and discolored fan grille cover can be an eye sore to your updated bathroom. 50 cubic feet per minute cfm intermittent or 20 cfm continuous. 10ft 10ft 8ft 7 5 106 67 cfm. Bath fans by room size.

Bathroom fan exhaust size calculator. Bathroom window condensation and frost forming on bathroom windows during freezing. An effective bathroom fan should be capable of replacing the entire volume of air 8 times per hour or every 7 5 minutes. This is how often your extractor fan should be able to replace the bathroom with fresh air.

Best fans for cooling a room. Here s how we get this number.