The Dyson Pure Cool™ purifying tower fan intelligently purifies and cools you. Automatically sensing and reacting to pollution events and reporting them in real time on an LCD screen and Dyson Link app.*** A 360° sealed filtration system uses activated carbon to remove gases and odors and a HEPA filter to capture 99.97% pollutants 0.3 microns in size and Air Multiplier™ technology circulates purified air throughout the room.