The Winix Ultimate True HEPA pet air cleaner uses PlasmaWave technology to clean the air. Smart Sensors automatically set the right fan speed by calculating the amount of room impurities. The anti-microbial hair-collecting pre-filter makes it an ideal choice for pet owners. Its advanced odor-control carbon filtration process keeps your home or office fresh and smelling clean. The HEPA filter effectively traps pet dander, pet hair, lint and other allergens as small as 0.3 microns. Both filters are washable for reuse. This carbon filter air cleaner has an indicator to alert you when its time to change the filter. Ideal for rooms between 100 and 300 square feet. This air cleaner includes various modes like dust sensor, odor sensor, sleep mode and more.