Outdoor unit of air-conditioning apparatus

An outdoor unit of an air-conditioning apparatus, the outdoor unit comprising a compressor, a heat exchanger, and a controller, wherein

• the controller includes
• a compressor driving circuit configured to drive the compressor,
• a harmonic suppressing unit, comprising a direct current reactor, configured to suppress harmonics in the compressor driving circuit, and
• a housing containing the compressor driving circuit and the harmonic suppressing unit;
• the housing has
• a first section having ventilation holes configured to allow communication between an outside of the housing and an inside of the first section, and
• a second section constituting a frame separate from the first section;
• the first section contains the harmonic suppressing unit and a fan configured to blow air from the inside of the first section to the outside of the housing through the ventilation holes;
• and
• the second section contains the compressor driving circuit.