41+ Bathroom Fan Cfm Recommendations Background. Don't let moisture ruin your beautiful new bathroom. A bathroom fan is an essential piece of hardware in any indoor bathroom, without a window.
The measurement is taken when the ceiling fan is on its highest speed and uses both the volume of air and the rate at which it moves. Hvi recommend one cfm for every square foot floor space of your bathroom. When choosing the right cfm for your range hood, it general, you want to follow the recommendations of the home ventilating institute.
Thus, you should always assess the cfm rating to see the amount of air exchanged per minute.
Bathroom vent fans are rated by the cubic feet per minute (cfm) of air they move. Enjoy free shipping on most stuff, even big stuff. I'm having trouble choosing the cfm for a new bathroom fan. How many cubic feet per minute (cfm) should my bathroom exhaust fan produce?