Dyson’s latest purifiers combine intelligent sensing with an advanced filtration system. Three phases of purification sit within a fully sealed filtration and airflow system. So what goes inside, stays inside.⁶ A solid-state formaldehyde sensor and a unique catalytic filter detect and continuously destroy formaldehyde.¹ Then powerful Air Multiplier™ technology purifies, heats the whole room and cools you.² CAVEAT 1: ¹Third party full machine testing based on GB/T 18801-2018 formaldehyde cumulative clean mass testing with continuous injection until plateau of formaldehyde CADR is achieved. Results may vary in practice. CAVEAT 2: ²Tested In maximum setting for air projection, tested in Auto mode for purification coverage, tested for room heating per relevant Dyson method DTM961. CAVEAT 4: ⁴Not applicable to heating. CAVEAT 6: ⁶Particle challenge by DEHS oil specified in EN1822 within a chamber specified in ASTM F3150. CAVEAT 7: ⁷Tested per ISO 29463.