According to one embodiment of the present invention, provided is an air conditioner which can minimize generation of a noise. According to one embodiment of the present invention, the air conditioner can comprise: an indoor motor driving a fan flowing indoor air; and an outdoor motor driving the fan flowing outdoor air. Moreover, according to one embodiment of the present invention, the air conditioner can comprise a control unit which sets rotating speed of an indoor motor driving the fan flowing the indoor air according to operating modes and the maximum rotating speed of the outdoor motor driving the fan flowing the outdoor air and varies the rotating speed of the outdoor motor within a range which does not exceed the maximum rotating speed according to information of an indoor environment and values set by a user.