Exhaust Fan Size For Bathroom

But o brian suggests a simpler rule of thumb.

Exhaust fan size for bathroom.

To arrive at your required cfm simply divide your bathroom s volume by 7 5. Small room bath fans perfect for a modest sized bath or powder room. Fans with surfaceshield technology combine the power of broan nutone s bathroom ventilation fans with vital vio s led light technology to prevent the growth of bacteria mold yeast and fungi. Bathroom select a fan with a 50 to 80 cfm rating.

Some manufacturers recommend the number of cfms based on square feet or cubic feet. For bathrooms less than 100 square feet you can just go with 1 cfm for every square foot of floor area he says. If your bathroom is larger than 100 square feet tally the cfm requirements for the individual fixtures to estimate your needs. 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. Determine the required cfm for your bathroom fan. Length x width square feet length x width x height cubic feet. For example a bathroom with a volume of 1000 cubic feet 28 3 cubic meters needs a fan capable of moving 1000 7 5 or 133 cfm 3 8 cubic meters per minute.

The minimum allowed fan size is 50 cfm so if your bathroom is for example only 42 square feet you still need a 50 cfm fan. For example for a 50 79 sq. For example if your bathroom is 80. For a standard 10ft by 10 ft bathroom with an 8 ft ceiling you will need an exhaust fan capable of 106 67 cfm.

Read on to find out more. For example for a 50 79 sq. 10ft 10ft 8ft 7 5 106 67 cfm bathroom fan exhaust size calculator. A 50 square foot or smaller bathroom needs a 50 cfm fan.

Tam asks what size exhaust fan should we use in our small bathroom if your bathroom has an 8 ceiling the cubic feet per minute cfm rating for your fan should be as high or higher than the number of square feet in the room. Bathroom select a fan with a 50 to 80 cfm rating. Higher ceilings would require a larger fan. Broan surfaceshield vital vio powered exhaust fan w led light antibacterial light.

Choose a fan that can move at least 1 cfm per square foot of room. The size of your bathroom can help determine how many cfms you need. Small room bath fans perfect for a modest sized bath or powder room.