The Honeywell HPA094WMP Air Purifier utilizes a True HEPA filter that greatly assists in the process of capturing up to 99.97% of microscopic allergens and 0.3 microns or larger from air that directly passes through the filter. The carbon pre-filter also works tremendously well in the capturing process of particular airborne germs and greatly reduces unpleasant odors in the surrounding area. Incredibly compact in design, this unit carries additional versatility with its strength of circulating air up to 5 times an hour in smaller rooms less than 100 square feet. The HPA094WMP Tower Air Cleaner comes programmed with 3 differing levels of cleaning power and features manual controls and electronic filter replacement reminders. 1) Quiet operation, 2) Circulates room air 5 times every hour, 3) ENERGY STAR Rated, 4) Recommended for medium rooms. White.