InSight HEPA Tower Air Purifier delivers powerful, HEPA filtration in a tower design that displays setting information from a distance. Air-quality indicator is powered by a VOC sensor that constantly monitors air quality while providing real-time, easy-to-understand feedback with the Insight display panel. Automatic cleaning mode uses the air-quality reading to automatically adjust to the optimal cleaning level. Color-coded feedback illuminates which of the four cleaning levels you select. Purifier features a touch-screen control panel, auto-off timer & filter check / reset lights. Air purifier uses HEPA certified filters to help capture up to 99.97 percent of microscopic allergens & particles such as dust, smoke, pollen, pet dander & mold spores in large rooms (approximately 200 square feet). Carbon-activated pre-filter helps trap larger particles & reduce odors & VOCs. Air purifier works with Honeywell A & A Plus Pre-Filters & True HEPA G Replacement Filters.