The Shark Air Purifier HC450 3-in-1 integrates Pure Air Microforce technology for quick and quiet purification in spaces up to 500 square feet. Featuring purified heat and fan modes, it adapts to diverse needs. Clean Sense IQ monitors air quality, adjusting in real time. With a HEPA filter it can capture 99.98% of airborne particles like allergens*, dust, and dander (based on IEST-RP-CC007.3, 0.1-0.2 microns).*“Allergens” refers to non-living matter.