The Shark Air Purifier uses Pure Air MicroForce to deliver fast powerful and quiet purification in a compact size. Clean Sense IQ senses air quality and auto-adjusts to maintain clean air in your home while reporting results in real time. A HEPA filter captures 99.98% of airborne particles like allergens* dust and dander (based on IEST-RP-CC007.3 0.1-0.2 microns). Cleans spaces up to 500 square feet based on 1 air change per hour. Perfect for bedrooms offices nurseries and more.*“Allergens” refers to non-living matter.