The Dyson Pure Hot + Cool™ HP00 Purifying Fan heats with thermostatic control in winter and purifies the air all year round. It automatically removes 99.95% of allergens and pollutants as small as 0.1 microns from the air. Other features of the Dyson HP00 include Air Multiplier™ technology, Jet Focus control, remote control, oscillates at 70° and Night-time mode.