Captures 99.97% of allergens and particles as small as 0.1 microns. 3 Stage 360-Degree filter with pre-filter True HEPA and active carbon filter. Microscopic particles 2.5 microns and smaller are continually detected by the PM2.5 sensor. Color-coded light indicates air quality with 6 levels. Auto Mode adjusts to ideal fan speed in response to air quality. Whisper Quiet setting turns off screen and uses speed 1. Cleans rooms up to 5x per hour in 225 square foot rooms. CADR certified: 148 CFM (smoke) 154 CFM (dust) 160 CFM (pollen).
