Dyson's purifying fan heaters combine intelligent sensing with an advanced filtration system. A filter removes gases? and odors, and a HEPA filter? captures 99.97% of particles 0.3 microns? in size. Powerful Air Multiplier™ technology purifies and heats the whole room.¹ ¹Tested In maximum setting for air projection, tested in Auto mode for purification coverage, tested for room heating per relevant Dyson method DTM961. ²Fan, not an air conditioning unit. ³Requires device to run app, Wi-Fi or mobile data, Bluetooth 4.0 support, and iOS version 10 or Android version 5 (or above). Standard data and messaging rates may apply. Refer to the MyDyson™ app for compatible voice services. ?Particle challenge by DEHS oil specified in EN1822 within a chamber specified in ASTM F3150. ?Gas capture rate may vary ?Tested per ISO 29463