Feature: 3 IN 1,FAN+HEATER+PURIFIER. HEPA filter can effectively capture 99.95% airborneparticles of 0.3 micron,aerosols of 0.3-10 micronand allergens (e.g. dust mites,pollen,mold spore,etc)Dual Heating element to fast warm the room.Heating element is invisible safer. BLDC motor/Mixed-flow impeller to generate powerful airflow.LED light for optional. Magnetic remote control for optional.Constant temperature setting: Heating will turn off whenreach set temperature, re-activated when room temperatureis below set one. Thermostat protection. Anti-tilt protection. Heating temperature setting: 5 C-35 C. Touch-sensitive control, Digital display. 1-9 air speed /1-4 air speed for heating mode.