Outdoor unit

An outdoor unit connected to an indoor unit through a refrigerant pipe, comprising:

• a casing;
• a compressor accommodated inside the casing;
• a four-way valve accommodated inside the casing and connected to an inlet and an outlet of the compressor via two pipes;
• a valve mounting plate positioned in an upper part inside the casing and above the compressor;
• an electrical component box provided below the valve mounting plate, the electrical component box includes a controller configured to control a rotation speed of the compressor and control the four-way valve to change a connection of the four-way valve with the compressor;
• a valve mounted on the valve mounting plate, to which the refrigerant pipe is connected;
• and
• a terminal block to which a first wiring connected on a side of the indoor unit and a second wiring connected on a side of the controller,
• the valve mounting plate including
• a mounting portion on which the terminal block is provided, the mounting portion bringing an upper side on which the valve is arranged and a lower side on which the controller is arranged into communication with each other, wherein the mounting portion has
• an opening port configured to bring the upper side on which the valve is arranged and the lower side on which the controller is arranged into communication with each other, and
• a terminal block supporting portion having one end connected to a peripheral edge of the opening port, and being inclined downward from the one end to an other end, the terminal block supporting portion being provided with the terminal block thereon.