This purifier fan heater from Dyson combines three appliances in one. It heats and cools your room as well as capturing dust, allergens and bacteria – even destroying formaldehyde. Enjoy amazingly clean air and always feel the perfect temperature with the HP09.Captures dust, allergens and bacteria - even destroys formaldehydeAir Multiplier™ technology: to draw in pollutants and project purified airThe only purifier full sealed to HEPA H13 standardSmart purification: Control using Dyson Link app or voice