Dyson's HP07 Air Purifier combines intelligent sensing with an advanced filtration system. Two phases of purification are present within our fully sealed filtration and airflow system, ensuring that what goes inside stays inside. An activated carbon filter removes gases and odors, while a HEPA filter captures 99.97% of particles measuring 0.3 microns in size. Furthermore, the powerful Air Multiplier™ technology purifies and heats the entire room while providing cooling capabilities. It quickly and evenly heats the entire room with its long-range, purified heat projection. Additionally, it delivers a powerful stream of cooling, purified air from the front of the machine. The machine diverts air through the rear annular at a 45° angle, creating a more diffused airflow.