Green Air Encore features a three-stage air filter system, along with IonCluster technology that will purify your air, and help control odors. The certified True HEPA filter removes 99.97 pecent of particulates and allergens less than 0.3 microns while the odor fighting filter effectively reduces smoke, foul odors, and harmful off gassing VOCs including Formaldehyde and Benzene. <p>Green Air Encore is fully adjustable to your needs, and features a worry free AUTO mode to keep your indoor air as clean as possible. <p>With its three-stage advanced purifier system, Green Air Encore eliminates dust, smoke, pollen (including tree, grass, and ragweed), pet dander, odor, and harmful VOCs. <p>Features four distinct operating modes (AUTO, NIGHT, FAN, SILENT), and includes an air quality color changing light indicator which automatically adjusts the unit to match the air quality in the room. Covers up to 1000 sq. ft. <p>Three-Stage Advanced Filter Technology: <p>* Mesh Pre-Filter - washable micron mesh filters 99.9% of particulate matter larger than 0.28mm improving the lifespan of the other two filters. <p>* Odor fighting filter that effectively reduces smoke, odor and harmful off gassing VOCs including Formaldehyde and Benzene. <p>* True HEPA Filter - removes 99.97 percent of particulates including dust, smoke, pet dander, and pollen less than 0.3 microns.<p>16lbs, 25in tall, 14in wide, 7.5in depth