Medify Air MA-50 Air Purifier with H13 HEPA filter - a higher grade of HEPA comes with a CADR rating of 500m3/hr and can easily clean the air in a room up to 825 in 1 hr. It has True H13 HEPA 3 Layer Filtration. Comes with Touch control, 4 Air speed settings, 2-12 Hour timer and child lock. *Based on average CADR for pollen, smoke, and dust when operating at fan setting 3. Assumes closed room with 8 foot ceiling.*Average CADR for pollen, smoke, and dust