Bacteria, germs, mold spores, pollen, pet dander, smoke, dust, and odors can make breathing more difficult, especially for asthma and allergy sufferers. Sharp Plasmacluster™ Air Purifier helps remove these irritants from the air that passes through it with an ultra quiet fan that draws air through a three-stage filter system. Plus the revolutionary Plasmacluster Ion Technology actively refreshes the air. The FP-P30U is ideal for a living room, family room, study or bedroom, and is a smart way to choose cleaner, healthier, more breathable air. – Washable pre-filter traps dust, dirt and other airborne particles from the air that passes through it. – Active carbon filter removes many common household odors and gases. – Manual operation lets the user choose among 3 fan speeds. – Plasmacluster technology splits water molecules into positively and negatively charged ions which spread throughout the room. This system effectively refreshes the air similar to the way nature cleans the environment near waterfalls or just after a thunderstorm. – True HEPA Filter captures 99.97% of particles as small as 0.3 microns from the air that passes through it, including pollen, mold, pet dander and dust. – Library Quiet™ operation is ideal for bedrooms and living rooms. Silent Mode is as quiet as 22 decibels, about the volume of rustling leaves. These are among the quietest Air Purifiers with a HEPA filter available anywhere. – Energy efficient operation means they’re easy on the wallet. All Plasmacluster models are 35% more energy-efficient than standard models, making them ENERGY STAR® qualified. They can operate all the time, saving money as they improve the quality of the air.