What does CFM stand for?

CFM stands for cubic feet per minute. This measurement represents how many cubic feet of air move through the unit per minute.

This is important when considering which air purifier is right for you. The higher the CFM, the better potential air purification results.

CFM can be impacted by a variety of factors. That includes fan speeds, insulation, air flow in the room, furniture in the room, and the amount of pollutants in the air.


There is an equation to help you determine an ideal CFM. To find your ideal CFM, calculate the total volume of your space (length x width x height in cubic feet) and divide this number by your desired ACH.


Here is a sample equation:

CFM  =18 ft x 24 ft x 8 ft
5 (air exchanges)
CFM =3456
CFM =691.2