Dyson's latest purifiers combine intelligent sensing with an advanced filtration system. Two phases of purification sit within our fully sealed filtration and airflow system. So what goes inside, stays inside. Then powerful Air Multiplier technology purifies and heats the whole room and cools you. Automatically senses, captures and traps pollutants for cleaner air: The purifier is fully sealed, so what goes inside stays inside. Two phases of purification sit within our fully sealed filtration an