The Honeywell InSight® ® Series HEPA Air Purifier (HPA5300B) helps provide cleaner, fresher air in extra-large rooms up to 500 square feet. Its Air Quality Sensor continuously monitors air quality, while the display shows real-time air cleaning levels. Great for homes with pets, allergen sufferers, smoke, wildfire smoke, or stale air, this quiet purifier has Auto Mode, 2/4/8 hour off timers, and dimmer for night use. Includes 3 “R” HEPA filters (replace annually) to capture 99.97%* of microscopic allergens like dust, pollen, pet dander, smoke, including wildfire smoke, plus one “A” pre-filter (3-month replacement) to capture larger particles like hair, lint or pet fur, and reduce odors/contaminants released from products like paints, cleaners, or candles for optimal home air purification. Earned the ENERGY STAR label by meeting strict energy efficient guidelines set by U.S. EPA 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.