Winix Air Cleaner will help keep the air in a home or office clean and smelling fresh. The Winix 5500-2 Air Cleaner replaces the wildly popular 5500-2 model. The Winix Air Cleaner 5500 is designed for any indoor environment and is ready to capture dust, pollen, pet dander, smoke, mold spores, volatile organic compounds, and household odors. With the three-stage cleaning system, rest assured about the good quality of air in your space. The auto mode will fit in well in a fast-paced household since it can be set and then left alone. With a tremendous CADR (Clean Air Delivery Rate) rating from AHAM (Association of Home Appliances Manufacturers), this unit is best used for medium to large living spaces, kitchens, or bedrooms. The Plasma Wave Air Cleaner uses a three-stage air cleaning system featuring a Washable AOC carbon filter, 99.97 percent True HEPA filter, and Winix Plasma Wave Technology.