For small rooms up to 250 sq. ft. Equipped with Plasmacluster® Ion Technology and True HEPA Filtration. Includes a three-stage filter system with an activated carbon filter and a long-life HEPA filter. Captures 99.97% of particles = 0.3 microns. Effectively reduces pollen, dust, pet dander, smoke, germs, bacteria, viruses, odours, mould, and fungus. Features a Plasmacluster Express Clean mode providing 60 minutes of high-density ion production at high fan speed. Operates quietly with LibraryQuiet™ (22 dB). ENERGY STAR® certified.