Air-conditioning apparatus

An air-conditioning apparatus comprising:

• a heat medium cycle circuit in which a pump configured to pressurize a heat medium and an indoor heat exchanger configured to allow the heat medium to exchange heat with indoor air are connected by pipes to cause the heat medium to circulate through the heat medium cycle circuit, the heat medium serving as a heat delivery medium, the indoor air being a target to be air-conditioned;
• and
• a heat source side refrigerant cycle circuit in which a compressor, a heat source side heat exchanger, an expansion device, and a heat medium heat exchanger are connected by pipes to cause heat source side refrigerant to circulate through the heat source side refrigerant cycle circuit, the compressor being configured to compress the heat source side refrigerant, the heat source side heat exchanger being configured to allow the heat source side refrigerant to exchange heat with outdoor air, the expansion device being configured to reduce a pressure of the heat source side refrigerant, the heat medium heat exchanger being configured to allow the heat source side refrigerant to exchange heat with the heat medium, wherein
• the heat source side refrigerant cycle circuit has
• a bypass pipe through which the heat source side refrigerant passes to bypass the heat medium heat exchanger, a bypass valve configured to allow the heat source side refrigerant to pass through the bypass pipe or block the heat source side refrigerant from passing through the bypass pipe, and a merging portion to which a heat medium heat exchanger side pipe, a compressor side pipe, and the bypass pipe are connected, the heat medium heat exchanger side pipe having one end connected to the heat medium heat exchanger, the compressor side pipe having one end connected to a heat source side refrigerant suction side of the compressor, and
• the heat medium heat exchanger side pipe in the merging portion is connected to the compressor side pipe and the bypass pipe with a pipe axis thereof being upwardly inclined relative to a horizontal direction or being oriented upward in a vertical direction when viewed from the merging portion.