The Sharp FP-A80UW Energy Star Plasmacluster Air Purifier with HEPA Filter captures 99.97% of particles as small as 0.3 microns from the air that passes through it for rooms up to 400 sq. ft. Bacteria, germs, mold spores, pollen, pet dander, smoke and dust can make breathing harder, especially for asthma and allergy sufferers. This air purifier helps remove these irritants with an ultra quiet fan that draws air through a combined pre-filter and odor absorbing carbon filter and a 99.97% HEPA filter. This filter system plus the revolutionary Plasmacluster Ion Technology for air purifiers makes the air healthier and cleaner smelling. The FP-A80UW Air Purifier is ideal for a family room. It's a smart way to choose cleaner, healthier, more breathable air.