An air conditioner includes a cabinet and a fan assembly positioned within the cabinet and configured to guide air inside of the cabinet toward an outside of the cabinet. The air conditioner also includes a front panel coupled to the cabinet and configured to communicate air into the cabinet from the outside. The air conditioner further includes an intake panel moveable with respect to the front panel and configured to open or close an intake portion defined by the front panel. In addition, the air conditioner includes a guide unit positioned between the front panel and the intake panel and configured to partition the intake portion into at least two intake passages.