The air conditioner is particularly flexible in use and can be used not only for air conditioning, but also for heating, air dehumidification and ventilation. Particularly suitable for room cooling in offices, medical practices, private and commercial spaces. For cooling in server rooms, for heating during the transitional periods or for air drying in the humid season. With its compact dimensions, high cooling capacity and low noise level, it is the ideal air conditioner for smaller rooms up to a size of 18m².