Outdoor unit of air-conditioning apparatus

An outdoor unit of an air-conditioning apparatus, the outdoor unit comprising:

• a housing forming an outline of the outdoor unit;
• a partition plate extending from a front surface of the housing toward a rear surface of the housing and partitioning an interior of the housing into an air-sending device chamber and a machine chamber;
• a heat exchanger disposed in the air-sending device chamber and along an end portion located at the rear surface of the housing;
• and
• a holder mounted on the heat exchanger and accommodating a temperature-measurement unit configured to measure an outside air temperature,
• the partition plate including
• a first flat portion disposed with a space between a rear surface of the first flat portion and the heat exchanger and extending in a longitudinal direction of the heat exchanger, and
• a second flat portion projecting from a side edge portion of the first flat portion toward the heat exchanger,
• the holder including
• an accommodating unit holding the temperature-measurement unit, and
• a hook unit formed continuous with the accommodating unit, the hook unit extending across a top surface of the heat exchanger and being hooked to the first flat portion.