HEPA certified filters are the best-of-the-best for removing particulates and odors from your family's air. HEPA, which stands for High Efficiency Particulate Air, is a rating for air purifiers that absorb at least 99.7% of airborne particles as small as 0.3 microns. These whole home air purifiers will improve the indoor air quality for your family, removing dust, mold, bacteria and more, plus removing odors from cooking, smoking and painting.