Dyson Purifier Hot+Cool HP2 De-NOx delivers whole-room heating4 and powerful cooling6 with purified air. Advanced air purification captures 50% more NO2.8 Removes odors and gases,¹ and continuously destroys formaldehyde. The fully sealed, 3-stage filter system captures 99.97% of particles as small as 0.3 microns.³ The whole purifier, not just the filtration system, is fully sealed to Hepa H13 grade.³ Air Multiplier technology projects over 76 gallons per second of smooth, yet powerful airflow.7 Connects to the MyDyson app to control and monitor air quality from anywhere, or hands-free with compatible voice services.5¹Gas capture rates vary.²Refers to non-living material.³Particle challenge with Dehs oil specified in EN1822 within a chamber specified in Astm F3150. Tested per Iso 29463.4Tested per Dyson internal test standards for whole-room air projection (DTM108), purification coverage (Tm-003711), and heating performance (DTM961).5Requires 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.6Fan, not air conditioning unit.7Tested to Dtm-801, in fan mode, at speed 10.8Tested to Dyson test method Tm-003387. In a 3 cubic meter test chamber, at fan speed 10, at third-party test laboratory (Fraunhofer Wki), comparison against regular activated carbon performance.Third party full machine testing based on Gb/T 18801-2022 formaldehyde cumulative clean mass testing with continuous injection until plateau of formaldehyde Cadr is achieved. Results may vary in practice.