BREATHE FRESH AND CLEANER AIR The Germ Guardian AC4820 air purifier, equipped with Genuine Germ Guardian® HEPA Pure™ filtration technology, effectively captures 99.97% of germs, viruses, and allergens as small as 0.1 microns. Customize your at-home comfort with 3 speed settings and an ultra-quiet mode available at the lowest speed setting. This air purifier circulates the air in a large 740 sq. ft. room every 60 minutes or in a medium 150 sq. ft. room every 12.5 minutes, making it ideal for bedrooms, offices, basements, and other open concept spaces. Designed, engineered, and independently tested in the United States, it exceeds industry standards. Your purifier is only as powerful and effective as the filter you put inside, and our Genuine Germ Guardian replacement parts are essential for maintaining product performance. Each filter or bulb is designed specifically for a particular unit. Not only will genuine replacement parts fit perfectly, but they also match the combination technology of the unit, allowing you to get the most out of your air purifier. This product earned the Energy Star label by meeting strict energy efficiency guidelines set by the U.S.EPA. WARRANTY: Germ Guardian offers reassurance with a 5-year limited warranty in addition to your purchase."