Dyson Purifier Humidify+Cool PH2 De-NOx? purifies and hygienically humidifies the whole room.? It also cools you.? Hygienically removes 99.9% of bacteria in the water.¹? Removes odors and gases,¹ and continuously destroys formaldehyde.? Advanced air purification captures 50% more NO?.? 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 77 gallons per second of smooth, yet powerful airflow.? Connects to the MyDyson™ app to control and monitor air quality from anywhere, or hands-free with compatible voice services.? ¹Gas 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. ?Tested for air projection (DTM801) and humidification (TM-002110). ?Requires 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. ?Fan, not air conditioning unit. ?Tested to DTM-801, in fan mode, at speed 10. ?Tested 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. ¹?Humidifier water tank sterilization system tested on S. aureus, E. coli, P. aeruginosa and B. subtilis. Water tank was inoculated with live bacteria. Samples taken of the humidification water after the first 87mL of flow were compared with initial inoculated water, showing 99.9% reduction in viable bacteria. ¹¹Based on fan speed 1.