Air Multiplier purifier fan technology projects a powerful stream of smooth, uninterrupted, purified air. Cooling tower fan when you need it. A powerful stream of purified airflow can cool you down when desired. 360 degree filtration system combines activated carbon to remove odours and gases with HEPA, to capture 99.95% of microscopic allergens and pollutants as small as 0.1 microns. Dyson purifiers have Air Multiplier technology. It generates the circulation power to draw even distant pollutants into the machine, projecting purified air throughout the room. Adjustable oscillation projects purified air around the whole room. Curved and magnetised to store neatly on the machine. No fast-spinning blades, or awkward grilles. The filter is quick and easy to change. With automatic filter-life notifications on the machine.