Outdoor unit of air conditioner

An outdoor unit of an air conditioner, comprising:

• a cabinet including a base panel and a side panel;
• a compressor supported by the cabinet;
• a heat exchanger supported by the cabinet;
• and
• a leg frame at a lower end of the cabinet to support the cabinet, wherein the leg frame includes:
• a channel including an upper flange coupled to the base panel, a lower flange installable on an installation surface, and a web connecting the upper flange with the lower flange, and
• a first coupling portion fixed to the side panel and positioned on a first side of the channel at an end of the leg frame, and a second coupling portion fixed to the side panel and positioned on a second side, opposite to the first side, of the channel at the end of the leg frame with the channel interposed between the first coupling portion and the second coupling portion, so that a center of gravity of the channel is prevented from moving or the channel is prevented from being deformed by shaking of the side panel.