Coway Mighty (AP-1512HH) is designed to accommodate room sizes up to 361 sq. ft (CADR: Dust 246 / Pollen 240 / Smoke 233 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 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 1, 2, 3 stages by manually setting up. While 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 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. | 77 W power consumption and quiet operation with noise level ranging from 24. 4 dB to 53. 8 dB. | Limited manufacturer's covers any internal/functional parts for 1 year and motor and electronic parts for 3 years. Filters are excluded. | Won the Best Air Purifier of 2018 at Wirecutter and ranked 1st place at the TopTenReviews. | Power source type: Electric