Multi-function evaporative cooler is a combination of fan's air circulation and humidifier's purification. The indoor portable evaporative air coolers evenly distributes cool air through the honeycomb cooling media while the dust filter cleanses the air. Its non-compressor system cools naturally, efficiently and inexpensively without power-hungry components. This evaporative air cooler, humidifier, and fan is versatile, lightweight and economical. It can also be used as a air purifier because of its anion generator. The remote control allows you to easily change. And this air cooler easily rolls from room to room for use anywhere in your house or office. Energy-efficient: SUGIFT multi-function evaporative cooler is a combination of fan's air circulation and humidifier's purification. Compared with a window AC unit, one of its biggest advantages is the fact you can use this compact swamp cooler in rooms with or without windows, it's easy to install and doesn't require any modifications.