Abstract: An air conditioner of the invention is formed of a main body in a box form with a partition panel for dividing indoor and outdoor heat converter rooms, a base holder situated in the main body under the opening, a damper supported on the base holder for covering an opening of the partition panel to be movable relative to the opening of the partition panel, a control part movably disposed on the base holder, and an elongated connection member for connecting the control part and the damper to move the damper by operating the control part. The connection member is made of a synthetic resin and includes at both ends connecting devices integrally formed therewith to be connected to the control part and the damper. Also, a holding device is integrally formed with the base holder. The holding device guides the connection member and includes a holding part with a substantially C-shaped cross section for holding the connection member therein.