The device primarily functions as a combination of a fan, air humidifier, and air conditioner, delivering a cool airflow into the room. The cooling of the blown air is achieved through the evaporation of water or ice from the device's 7 to 10-liter water tank.

The air conditioner can be operated using the included remote control or the buttons on the LED display. The integrated water and dust filters ensure clean air. It features a timer of up to 8 hours.

Thanks to the attached wheels and handles, the device is mobile and can be used immediately without installation. You can place the air conditioner at nearly any window, and the wheels provide great flexibility, mobility, and quick adjustability.

The three adjustable power levels and the optional automatic oscillation allow for optimal adaptation to weather and room conditions.

A key advantage of the KESSER air cooler over traditional air conditioners is its superior energy efficiency, regardless of the energy efficiency class of the air conditioner. With a power consumption of only 65 watts, the device noticeably and consistently cools small to medium-sized rooms.