An air conditioning apparatus comprising: an aluminum heat exchanger for performing heat exchange between air and a refrigerant, the heat exchanger being disposed upright; an aluminum gas pipe for channeling gas refrigerant, the aluminum gas pipe extending from a side part of the aluminum heat exchanger; an aluminum liquid pipe for channeling liquid refrigerant, the aluminum liquid pipe extending from an area below the aluminum gas pipe in the side part of the aluminum heat exchanger; and a copper gas pipe for channeling gas refrigerant; the aluminum gas pipe being connected in a connecting part to the copper gas pipe; and the aluminum liquid pipe being disposed in an area outside of directly under the connecting part of the aluminum gas pipe and the copper gas pipe, characterized in that: the aluminum gas pipe is connected in the connecting part to the copper gas pipe from above the copper gas pipe; the air conditioning apparatus further comprises: a copper liquid pipe for channeling liquid refrigerant; the aluminum liquid pipe having a first turn-back part extending upward from the side part of the aluminum heat exchanger and then forming a U-turn to extend downward, and the copper liquid pipe being connected to an end of the first turn-back part from below; the aluminum gas pipe extends in the same direction in which the aluminum liquid pipe extends, and has a second turn-back part extending upward from the side part of the aluminum heat exchanger and then forming a U-turn to extend downward, the copper gas pipe being connected to the end of the second turn-back part from below, and the second turn-back part being disposed in an orientation that intersects the first turn-back part in a plan view. an aluminum heat exchanger for performing heat exchange between air and a refrigerant, the heat exchanger being disposed upright; an aluminum gas pipe for channeling gas refrigerant, the aluminum gas pipe extending from a side part of the aluminum heat exchanger; an aluminum liquid pipe for channeling liquid refrigerant, the aluminum liquid pipe extending from an area below the aluminum gas pipe in the side part of the aluminum heat exchanger; and a copper gas pipe for channeling gas refrigerant; the aluminum gas pipe being connected in a connecting part to the copper gas pipe; and the aluminum liquid pipe being disposed in an area outside of directly under the connecting part of the aluminum gas pipe and the copper gas pipe, characterized in that: the aluminum gas pipe is connected in the connecting part to the copper gas pipe from above the copper gas pipe; the air conditioning apparatus further comprises: a copper liquid pipe for channeling liquid refrigerant; the aluminum liquid pipe having a first turn-back part extending upward from the side part of the aluminum heat exchanger and then forming a U-turn to extend downward, and the copper liquid pipe being connected to an end of the first turn-back part from below; the aluminum gas pipe extends in the same direction in which the aluminum liquid pipe extends, and has a second turn-back part extending upward from the side part of the aluminum heat exchanger and then forming a U-turn to extend downward, the copper gas pipe being connected to the end of the second turn-back part from below, and the second turn-back part being disposed in an orientation that intersects the first turn-back part in a plan view. the aluminum gas pipe is connected in the connecting part to the copper gas pipe from above the copper gas pipe; the air conditioning apparatus further comprises: a copper liquid pipe for channeling liquid refrigerant; the aluminum liquid pipe having a first turn-back part extending upward from the side part of the aluminum heat exchanger and then forming a U-turn to extend downward, and the copper liquid pipe being connected to an end of the first turn-back part from below; the aluminum gas pipe extends in the same direction in which the aluminum liquid pipe extends, and has a second turn-back part extending upward from the side part of the aluminum heat exchanger and then forming a U-turn to extend downward, the copper gas pipe being connected to the end of the second turn-back part from below, and the second turn-back part being disposed in an orientation that intersects the first turn-back part in a plan view. a copper liquid pipe for channeling liquid refrigerant; the aluminum liquid pipe having a first turn-back part extending upward from the side part of the aluminum heat exchanger and then forming a U-turn to extend downward, and the copper liquid pipe being connected to an end of the first turn-back part from below; the aluminum gas pipe extends in the same direction in which the aluminum liquid pipe extends, and has a second turn-back part extending upward from the side part of the aluminum heat exchanger and then forming a U-turn to extend downward, the copper gas pipe being connected to the end of the second turn-back part from below, and the second turn-back part being disposed in an orientation that intersects the first turn-back part in a plan view.