An outdoor unit includes an outdoor air heat exchanger formed of an air heat exchanger that includes multiple aligned fins and a heat transfer tube intersecting the fins at multiple positions and transferring heat of a refrigerant flowing in the tube and that exchanges heat between the refrigerant and air; and a blower fan forming a flow of the air flowing through the outdoor air heat exchanger. In the outdoor air heat exchanger, the heat transfer tube intersects the fins at intervals based on a flow rate of the air flowing into the outdoor air heat exchanger according to a positional relationship with the blower fan.