To suppress erroneous wiring in a branch unit, and to enhance workability for wiring handling in the branch unit, in a multi-type air conditioner provided with the branch unit.

In this air conditioner, the branch unit 10 is provided with a branch unit refrigerant circuit part having a plurality of split tubes and a plurality of motor-driven expansion valves, a branch unit control part for controlling an opening degree of the plurality of motor-driven expansion valves, and a branch unit interior wiring connection part connected to the plurality of pairs of electric power source wirings and signal wirings for connecting the branch unit control part to an interior unit. The plurality of pairs of electric power source wirings and signal wirings connected to the branch unit interior wiring connection part is constituted to be led out respectively from a plurality of different leading-out holes 90, 90 provided in the branch unit 10, and the plurality of leading-out holes is arranged with a vertical relation with respect to the respective split tubes 12a-12c to correspond to the respective split tubes in the branch unit refrigerant circuit part.