Thumb Score: +4 Limited time deal on one of the best purifiers on the market [Coverage] Designed to clean spaces up to 1,560 sq. ft. in 30 minutes.Noise Level : 22-52 dB(A). [HyperCaptive Filtration System] Dynamic combination of a washable pre-filter, activated carbon filter, and Green True HEPA Filter effectively reduces 99.999% of 0.01-micron particles in the air, including pollen, pollutants, and other allergens; It also reduces 99% of volatile organic compounds and odor [Smart Mode] With its Smart Mode feature, the Airmega automatically adapts to its surroundings by adjusting fan speeds based on the room's air quality; That means your unit is energy efficient without compromising effectiveness