A window type air conditioner comprises: a case of which one side is positioned indoors and another side is positioned outdoors; an axial fan mounted in the case for blowing the air in the radius direction thereof; a shroud having the axial fan therein and for guiding the air blown by the axial fan; and an orifice formed at the entrance of the shroud and covering the axial fan not to expose the axial fan to outside in order to prevent sucked air from colliding with the blade of the axial fan in the radius direction. According to this, the entire size of the air conditioner is minimized, noise is reduced, and the air volume passing through the outdoor heat exchanger is increased.