Whirlpool air purifiers quietly and efficiently clean the air you breathe. Their True HEPA filter cleans the air passing through it 4.8 times per hour. Anyone who is concerned with their air quality or simply wants to keep a room fresh, will feel comfortable with the performance and technology built into a Whirlpool Whispure air purifier. The True HEPA filter captures 99.97% of particles as smaal as 0.3 microns from air passing through the filter, capturing airborne allergens such as: household dust, pet dander, tobacco smoke, mold spores, plant pollens and fabric fibers. Ideal for use in an office, family room or basement.