The tall, slim design of this air conditioner facilitates space-saving positioning in bedrooms, where it creates pleasant indoor climates. The device merges the functions of an air conditioner with those of an air purifier and humidifier into one single unit. It sucks in fresh air from the outside, purifies and humidifies it, and then makes it circulate inside the room. The water tank is extractable and the air filter removable for easy cleaning, a functional detail that enables easy daily maintenance.