This Honeywell HPA030 HEPA Tower Air Purifier includes a Certified Honeywell HEPA Filter that helps capture up to 99.97% of the following microscopic airborne allergens and particles: dust, pollen, pet dander, dust mite debris and smoke.*This Honeywell Air Purifier filters and circulates air in a 200 sq. ft. room up to 4.8x an hour. ** or 990 sq ft 1x per hour. ** If you have pets or stale indoor air, air purifiers can help deliver cleaner, fresher air. Plus, it’s an air purifier for home that features 3 air cleaning levels and a filter check/reset light that reminds you when it is time to change your filter.  Always purchase Genuine Honeywell replacement air purifier filters. They are certified to help capture odors and the following microscopic allergens and particles: dust, pollen, pet dander, dust mite debris, and smoke.* Other compatible filter replacements are not guaranteed to offer the same performance or efficiency. Disclaimers: * From the air that passes through the filter, 0.3 microns and larger. ** Based on 3rd party independent CADR testing for the smoke CADR value when operated at the highest level. Air circulation depends on many factors, such as room size and configuration. There is no guarantee that all of the air in a room will pass through the filter. *** When operated with the odor reducing pre-filter. It is recommended to always use the pre-filter when operating this air purifier. This product does not reduce or adsorb carbon monoxide gas. Make sure gas appliances are well ventilated.