Effectively purifies air in a large rooms 300-600 square feet with a 4-stage hospital-type filtration. AeraSmart Sensor monitors the air quality & automatically adjusts the fan speed to keep your air purified. True HEPA filter with AeraSafe antimicrobial treatment safely removes 99.97% of airborne particles as small as 0.3 microns, including pollen, ragweed & other allergens, viruses, germs, dust mites, mold spores, pet dander & cigarette smoke. Extremely effective at capaturing influenza virus from indoor air (based on independent testing). Carbon filter removes odors & captures large airborne particulates. Aera+ Mode for allergy & cold / flu seasons. Ultra quiet operation. Fan Speed Indicator lets you manually adjust the fan speed setting – low, medium, high or turbo. Filter Change Indicators let you know when it is time to replace your Carbon or True HEPA filter. Built-in handle for easy portability. User-friendly capacitive touch display panel effectively communicates machine performance. Air Cleaner Machine Type: HEPA & Odor Fitration; CADR: 196 (Dust); 188 (Pollen); 188 (Smoke); Maximum Room Size (Square Footage): 600 sq ft; Maximum Room Size: 56.56 x 56.56.