CFM represents cubic feet per minute. This is an important factor in deciding what air purifier you need for your purpose. The larger the area the more CFM will be required. Each LakeAir air purifier list its CFM output in the product description.
There is an equation to figure CFM:
A 15’ X 15’ X 15’ living room
Step 1: 15 x 15 x 15 = 3375
Step 2: 3375 ft3 / 60 minutes = 56.25 ft3 per minute
Step 3: 56.25 ft3 per minute x 8 air changes per hour ( an average pollution level ) = 450 cfm (cubic feet per minute)
Or, you can use our easy Air Purifier Calculator to determine how many CFM you need.