The Honeywell HFD-120-Q QuietClean Oscillating Air Purifier, helps capture up to 99% of microscopic airborne particles: dust, pollen, pet dander, dust mite debris and smoke.* Recommended for medium rooms (170 sq. ft). This Honeywell QuietClean air purifier will filter and circulate air up to 4.8x per hour.** If you have allergies, pets or stale indoor air, air purifiers help remove airborne particles and help improve air quality. This QuietClean air purifier by Honeywell includes a permanent, washable filter and pre-filter, as well as an alternate pre-filter that helps reduce odors and VOCs.**** To clean washable filters, simply rinse with water and let dry. It also features on/off oscillation control, a LED touch button control panel with three speeds, and an electronic filter check indicator. This Honeywell Air Purifier earned the ENERGY STAR label by meeting strict energy efficient guidelines set by the U.S. EPA. Disclaimers: * From the air that passes through the filter, 2 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. *** The ifD particle filter and foam pre-filter can be washed to clean **** When operated with the odor reducing pre-filter. It is recommended that the pre-filter be replaced every 3 months to effectively reduce common household odors and VOCs in a room.