Abstract: An outdoor unit of an air-conditioning apparatus enabling a soundproof material to correctly cover a compressor and having enhanced assembling efficiency and a method for assembling the outdoor unit of an air-conditioning apparatus are provided. The outdoor unit of an air-conditioning apparatus includes the compressor installed inside a casing and the soundproof material covering at least the compressor. The soundproof material includes a lower soundproof material surrounding a lateral periphery of a lower portion of the compressor and an upper soundproof material surrounding a lateral periphery of an upper portion of the compressor.

Abstract: An outdoor unit of an air-conditioning apparatus enabling a soundproof material to correctly cover a compressor and having enhanced assembling efficiency and a method for assembling the outdoor unit of an air-conditioning apparatus are provided. The outdoor unit of an air-conditioning apparatus includes the compressor installed inside a casing and the soundproof material covering at least the compressor. The soundproof material includes a lower soundproof material surrounding a lateral periphery of a lower portion of the compressor and an upper soundproof material surrounding a lateral periphery of an upper portion of the compressor.

Abstract: An electrical component module is provided in which a heat sink is applied as a cooling unit for a power element and space can be saved. The electrical component module includes: a first holder having substrate holding structures on a first surface portion and a second surface portion located on a back-surface side of the first surface portion; a second holder disposed perpendicular to the first holder at an end portion of the second surface portion of the first holder and having a substrate holding structure on one surface of the second holder; a first substrate held on the first surface portion of the first holder; a second substrate and a heat sink both held by the second holder; and a third substrate held on the second surface portion of the first holder, and connected to the first substrate and the second substrate by a line.