Featuring HEPA filtration, this air purifier has been engineered to help capture up to 99.97% of microscopic airborne allergens & particles such as dust, pollen, pet dander, dust mite debris & smoke. The activated carbon pre-filter helps capture large airborne particles & reduces odors & VOCs. The HPA5100's effective design & filtration can circulate & clean the air an amazing 4.8 times per hour in a medium-large 190-square foot room. Additional optional enhanced odor & VOC filters can be purchased separately, to help tackle specific household odors & VOCs from pets, kitchens, smoke or home renovation. Air Cleaner Machine Type: HEPA; CADR: 125; Maximum Room Size (Square Footage): 190 sq ft; Maximum Room Size: Medium.