The exhaust fan removes moisture and humidity from your bathroom.
Cfm meaning bathroom fan.
Larger bathrooms require additional ventilation capacity.
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 effectiveness of the fan will be rated in cfm or.
The fan pulls air out of the bathroom and allows fresh air to be drawn in.
This keeps the moisture from the shower bath or sink from encouraging mold growth.
The following chart can be used as a guide for proper bathroom.
The cfm represents the airflow required to completely exchange the air in your bathroom 8 times in one hour.
Cfm is key when determining a fan s airflow efficiency.
Bathroom vent fans serve an important function by removing humid air from your home to prevent mold and mildew from forming.
So for example a 1 000 cfm fan can remove all of the air from a box that is 10ft x 10ft x 10ft in one minute.
For example a 7 x 10 bathroom would require a 70 cfm fan.
In the case of a blower or fan it indicates how much air it can move per minute.
Cubic volume 7 5 cfm necessary.
The most common use for this formula is when installing a bathroom fan.
To be effective a bathroom fan needs to be powerful enough to completely replace the air in the room about 8 times every hour.
A 50 cfm rating is recommended as a minimum for bathrooms 50 sq.
The formula to calculate bathroom exhaust fan size reads as follows.
You could have a fan that moves a lot of air with a high cfm but does so at a high wattage.
Cfm is the acronym for cubic feet per minute the measure of air volume moved by the fan blower.
Choose a fan with a cfm rating appropriate for your room size to ensure adequate ventilation.
For most bathrooms this works out to one cfm per square foot of bathroom area.
Bathroom extractor fans are mandatory in any bathroom without a window and still highly recommended in bathroom with windows.
If a bathroom is 8 x 8 with 8 ceiling that equals 512 cubic feet.
Airflow efficiency is the cfm divided by the watts amount of energy used to run the fan at its highest speed.
The result is the cfm or cubic feet per minute rating required for your bathroom fan.
