Abstract: The present invention relates to a window-type air conditioner comprising a body provided with a first portion and a second portion, the portions being partitioned by a intermediate plate. The first portion includes an inlet portion for intaking air from an indoor room and an outlet portion for discharging heat exchanged (conditioned) air into the indoor room. The inlet and outlet portions are relatively thin and are mounted at a window of the room extending forward to communicate with the room and isolate the second portion from the window. The second portion includes an operating portion which is mounted at an outside wall of the room. This invention allows for greater visibility through the window in which the air conditioner is mounted, and greatly reduces the operational noise from entering the indoor room.