This versatile 4-in-1 unit from Schallen functions as an air cooler, fan heater, air purifier, and humidifier, making it suitable for year-round use. It features a water pump circulation system, a removable and easy-to-clean green cellulose cooling pad, remote and panel controls, and a water tank with a low water level warning system. For convenience, it includes a 12-hour timer and castors for easy mobility. The air cooler function provides a powerful yet comfortable flow of cool air, while the humidifier adds necessary moisture. In colder months, the heater function offers two heat settings and three fan settings for optimal warmth. The built-in air purifier uses ionization to purify and sterilize the air, helping to combat colds and flu.