#1 brand recommended by allergists, Certified HEPA captures up to 99.97% of microscopic particles, 0.3 microns and larger. Insight Display provides valuable information like settings and air quality at-a-glance from a distance Helps reduce odors and VOC's. Air Quality Indicator and Auto Mode Touch Screen LED Control Panel 4 Intuitive Cleaning Levels (3 + Turbo), Auto-off timer, Control panel dimmer & Filter change indicators -5 room air changes per hour5 AHAM CADR (smoke): 132/ Rm Size: 200 sq. ft.