This multifunctional device with integrated inverter filters and dehumidifies the air in indoor spaces in a particularly efficient and energy-saving way. The design focuses on user-friendliness, which is why the control unit was optically separated from the functional one: the generous user interface is situated on the inclined top of the device and is distinguished from the black air outlets by black-and-white contrasting. Energy-saving information can be easily obtained by the user on the circular display.