The Comfort Zone Clean Air Purifier with True HEPA technology is designed to be compact for use in small rooms (up to 150 sq. ft.) and provide true HEPA performance with replaceable filters. The 3 stage HEPA filtration system will remove 99.97% of airborne particles down to 0.3 microns including dust, dander, smoke, pollen and other allergens. Each filter lasts up to 3,000 hours of use helping to reduce odor and providing you with clean air for maximum comfort. It also comes equipped with a negative ion generator that attracts and traps dust helping your family to breathe easy and enjoy clean, fresh air. The Comfort Zone Clean Air Purifier features touch controls with colored light indicators, as well as a night light feature to provide a soft light at night. For best results, replace your filter every 3-6 months with the Comfort Zone Clean Air Purifier HEPA Replacement Filter, model CZAPH132. Color: White.