The Dyson purifier humidifier is engineered to help improve your air quality. An advanced filtration system combines a filter to remove gases5 and odors with a Hepa² filter to capture 99.97% of particles 0.3 microns6 in size. Powerful Air Multiplier technology projects purified, humidified air throughout the room.¹¹Tested for air projection (DTM801) and humidification (Tm-002110).²Particle challenge by Dehs oil specified in EN1822 within a chamber specified in Astm F3150.³Requires 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.4Based on fan speed 1.5Gas capture rate may vary6Tested per Iso 294637Fan not air conditioning unit