A clothes treating apparatus may include a heat pump that is detachable and controlled according to a plurality of operation modes. The plurality of operation modes may include a drying mode configured to control operation of the heat pump when the heat pump is mounted on the cabinet and a dehumidification mode configured to control operation of the heat pump when the heat pump is separated from the cabinet. The heat pump may be used in a separable manner when separated therefrom as well as when mounted thereon.