Outdoor unit of air conditioner

Provided is an outdoor unit for an air-conditioning device, the outdoor unit being capable of reducing pressure loss when used as an evaporator, and being capable of achieving high heating performance and improvement in cooling performance at a low cost in the case of having the influence of a water head caused by the wind speed distribution of a heat exchanger and the height of the heat exchanger. The heat exchanger is composed of three rows of heat exchange parts which are higher than 1 m and arranged in the air flowing direction, the first row of heat exchange parts on the upwind side of the heat exchange parts are arranged in the mode that U-shaped heat conduction pipes are overlapped in the stage direction, and the two rows of heat exchange parts on the downwind side of the heat exchange parts are arranged in the mode that the U-shaped heat conduction pipes span the second row of heat exchange parts and the third row of heat exchange parts. And the third-row heat exchange part of the upper side heat exch