Highlights5 In 1 air cooler and heater - This air cooler and heater is multifunctional. It can be used as air cooler, heater, humidifier, fan, and air purifier. It reduces temperature through water evaporation and increase temperature by PTC heater.Breathe Clean Air - It can offer you a fresher and healthier environment by its particular air purifying function and Removable washable filter. It will release a large quantity of anions which remove airborne pollutants such as allergens, pollen, mol