The Dyson Purifier Hot+Cool HP1 delivers whole-room heating* and powerful cooling** with purified air. The fully sealed filter system captures 99.97% of microscopic allergens† and pollutants as small as 0.3 microns.†† The whole purifier, not just the filtration system, is fully sealed to HEPA H13 grade.¶ Air Multiplier™ technology projects over 76 gallons per second of smooth, yet powerful airflow.¶¶ Connect to the MyDyson™ app to control and monitor air quality from anywhere, or go hands-free with compatible voice services.§§