The Sharp FP-A80UW Air Purifier with HEPA Filter captures 99.97 percent of particles as small as 0.3 microns from the air that passes through it for rooms up to 400 square feet. This air purifier helps remove irritants with an ultra quiet fan that draws air through a combined pre-filter/odor absorbing carbon filter and a 99.97 percent HEPA filter. This filter system, plus the revolutionary Plasmacluster Ion Technology for air purifiers makes the air healthier and cleaner smelling. Ideal for a family room. It's a smart way to choose cleaner, healthier, more breathable air.ENERGY STAR Products that are ENERGY STAR-qualified prevent greenhouse gas emissions by meeting strict energy efficiency guidelines set by the U.S. Environmental Protection Agency and the U.S. Department of Energy. The ENERGY STAR name and marks are registered marks owned by the U.S. government, as part of their energy efficiency and environmental activities.