Bathroom Exhaust Fan Sizing

So in your case a 50 cfm fan should work.

Bathroom exhaust fan sizing. Building code does not specify bathroom vent locations but in any size bathroom it is the most logical to install it over or as close as possible to the plumbing fixture that requires it. This section discusses the minimum exhaust capacity of the exhaust fan. To arrive at your required cfm simply divide your bathroom s volume by 7 5.

The company does not cite a maximum exhaust duct length. In order to make the vent fan as quiet as possible mount the fan itself as far as possible from the intake register in the bathroom. Bathroom fan cfm guide.

Bathroom vent fans are rated for the amount of air they can move measured in cubic feet per. Below are examples of bath fan cfm ratings. Continue shopping bath exhaust fans to find a right fan for your budget size and style.

Hi tam bathroom vent fans are rated by the cubic feet per minute cfm of air they move and should be sized to replace the air in the room at least eight times an hour. Why your bathroom should have an exhausting vent fan bathroom venting fans are about more than just eliminating noxious odors. Making sure the bath fan is powerful enough for the bathroom is important to minimizing moisture and mold.

To get the total square footage multiply the length of your bathroom by its width. Multiply the bathroom floor area in square feet by 1 07. For example a 10 x 10 square bathroom floor area 100 sq ft.

Ft in the room. Here s how we get this number. 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.