Enjoy the benefits of powerful air cleaning with added anti-bacterial protection without the expensive replacement filter costs. The high efficiency, permanent filter removes up to 99% of airborne particles such as smoke, dust, pollen and pet dander. In addition, it helps reduce airborne germs, bacteria and mold spores.The powerful, quiet fan circulates the air in your room, filtering it up to 5 times an hour. The superior air cleaning power of the HFD-130 is up to 17 times more effective than ionic air purifiers.This model features easy-to-use advanced electronic controls with a 1-10 hour auto-off timer, 3 speeds and an electronic filter clean indicator. The high efficiency filter and pre-filter are permanent and never need replacement simply rinse in water to clean.The sleek, contemporary design and quiet operation makes this air purifier ideal for any room in your home. Most effective for medium size rooms up to 169 sq. ft.Features IFD (intense field dielectric) which has an outstanding performance in capturing microscopic paritcles.