The HealthMate combines proven filter technology to provide excellent overall protection from a wide range of airborne particles, chemicals, gases and odors. Every minute, over 250 cubic feet of air passes through 15 pounds of Activated Carbon and over 60 square feet of True Medical Grade HEPA, providing air so clean it could change your life and how you sleep. If it doesn't, we will refund your money if you return it within 30 days of purchase. Austin Air's 360-degree intake system draws air into all sides of the HealthMate, passing it through a 4-stage filter, including 2 pre-filters that help to extend the life of the main filters. Cleans up to 1500 square feet with normal ceiling heights. Comes with wheels for easy portability. Solid steel construction, powder-coated paint, energy saving motor. Comes with a 30 day money back guarantee and a 5 year warranty on all parts and labor, as well as a 5 year pro-rated filter guarantee. Austin Air was chosen by the U.S. Government to fulfill the largest deployment of air cleaners in American history and chosen by FEMA and The Red Cross to address the serious air quality concerns in post 9/11 New York. Made in the USA.