Vornado AC550 Whole Room True HEPA Air Purifier, 335 Sq Ft Coverage, Ice White

The Vornado AC550 Whole Room Air Purifier uses true HEPA filtration . one of the most effective filters available . to remove up to 99.97% of airborne allergens down to .3 microns in size. The Vornado AC550 Whole Room Purifier actively circulates and filters all the air throughout a room. (Without powerful circulation . an ordinary air purifier only cleans the immediate area around the unit.) The AC550 uses a radial blower to intake and clean all the air in a room ? up to 335 sq. ft. Precision engineering allows the blower to operate quietly . despite its powerful airflow. The AC550 uses a combination of 2 HEPA and 2 carbon filters to trap dust . pollen . pet dander . smoke . bacteria . mold spores . dust mites and more. The carbon prefilter both adsorbs odors and traps larger particles. When in ?auto mode .? advanced dust-sensing technology detects the level of dust in a room . fluctuating the cleaning cycle up or down . depending on the air quality. Features 4 speeds . push-button electronic controls . filter replacement indicator . sleep mode and industry-leading 5-year satisfaction guarantee.