To provide an air conditioner reducing an impact noise by suppressing a refrigerant dispersing degree when a refrigerant flows into an outdoor heat exchanger and inhibiting that a branched flowing amount of the refrigerant is deflected to flow to one refrigerant route.

The air conditioner comprises a compressor 16 for compressing the refrigerant, an outdoor heat exchanger 18 as condensers divided therein into two refrigerant routes 25a and 25b, and a branching unit provided between the exchanger 18 and the compressor 16 to branch the refrigerant discharged from the compressor 16 to the routes 25a and 25b of the exchanger 18. In this case, branching refrigerant pipes 27a and 27b each having an intermediate inner diameter are provided between a compressor side refrigerant pipe 28 in which inner diameters of compressor side refrigerant pipes 24a and 24b of the branching unit 31 are larger than that of the heat exchanger side refrigerant pipe and the pipes 24a and 24b.