Bathroom Fan Cfm

A fan should have a cfm rating high enough to replace the air in your bathroom at a rate 8 times per hour.

Bathroom fan cfm. The result is the cfm or cubic feet per minute rating required for your bathroom fan. The effectiveness of the fan will be rated in cfm or cubic feet per minute of air moved. For quick reference a 50 square foot bathroom needs a 50 cfm fan.

Standard fan sizing applies to bathrooms that are 100 square feet or less. So if you have a bathroom that is 12 feet long 15 feet wide and 10 feet tall then it has a volume of 1800 cubic feet 12 x 15 x 10 and a cfm of 240. Bathroom vent fans serve an important function by removing humid air from your home to prevent mold and mildew from forming.

Determine the size of your bathroom with this formula. To be effective a bathroom fan needs to be powerful enough to completely replace the air in the room about 8 times every hour. Bathroom vent fans are rated for the amount of air they can move measured in cubic feet per minute or cfm.

Standard fan sizing. If all else fails check the packaging. The rule of thumb is that you need at least 1 cfm per square foot of room area.

Length x width x height x 0 13 minimum cfm rating. The bigger your bathroom the higher the cfm rating you ll need. Vent fans are rated by the number of cubic feet of air they move per minute cfm and it s important to buy a large enough fan for the size of your bathroom.

The nutone white 50 cfm exhaust bath fan the nutone white 50 cfm exhaust bath fan with light combines efficient air circulation and up to 100 watts of illumination in one easy installation. Each bath fan will. If you have a bathroom with a separate enclosed toilet you ll also need an additional fan for that space.