Coway Mighty Tower (AP-1216L) is designed to accommodate room sizes up to 330 sq. ft. (CADR of Dust 235 / Pollen 262 / Smoke 213 cb. ft.).4 Stage Filtration System (Pre-filter, Deodorization filter, True HEPA filter, Vital Ion) captures and reduces up to 99.97% of particles 0.3 microns in the air, including pollen, pollutants and other allergens. It also reduces volatile organic compounds and reduces odor.Coway Mighty Tower pollution sensor communicates indoor air quality in real-time. The brightly colored LED lets you know how clean or dirty your indoor air is every minute of the day. And it features a timer, and filter lifetime indicator.Fan speeds available in Auto, 1, 2, 3 modes. Auto mode automatically optimizes the speed setting 1 through 3 based on the level of indoor air quality. When no pollution is detected for 30 minutes, the fan will automatically stop and set as Eco mode to save energy.Timer feature allows the machine to run 1/4/8 /12 hours before automatically powering off.Filter replacement indicator checks both Pre-filter and HEPA filter respectively to let users be aware of when to wash or replace the filter.Quiet operation with noise level ranging from 21 dB to 52 dB.Coway Mighty Tower is energy star certified and consumes 49.3 watts.Limited manufacturer's warranty covers any internal/functional parts for 1 year and motor and electronic parts for 3 years. Filters are excluded.