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 and filter check/reset lights. Air purifier uses HEPA certified filters to help capture up to 99.97 percent of microscopic allergens and particles such as dust, smoke, pollen, pet dander and mold spores in large rooms (approximately 200 square feet). Carbon-activated pre-filter helps trap larger particles and reduce odors and VOCs. Air purifier works with Honeywell A and A Plus Pre-Filters and True HEPA G Replacement Filters.