<p>Airpura air purifiers provide more air filtration power than most other air purifier manufacturers. Airpura air purifiers have a 560 CFM motor to pull air through carbon and hepa filters. (CFM means Cubic Feet per Minute). Many manufacturers have a 400 CFM motor. | <p>Airpura air purifiers provide more air filtration power than most other air purifier manufacturers. Airpura air purifiers have a 560 CFM motor to pull air through carbon and hepa filters. (CFM means Cubic Feet per Minute). Many manufacturers have a 400 CFM motor. |