Dyson Purifier Hot+Cool HP2 De-NOx​ delivers whole-room heating⁴ and powerful cooling⁶ with purified air. Advanced air purification captures 50% more NO₂.⁸Removes odors and gases,¹ and continuously destroys formaldehyde.⁹ 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.⁵