An air-conditioning apparatus including at least a compressor, a heat-source-side heat exchanger, a plurality of expansion devices, a plurality of heat medium heat exchangers, a plurality of first heat-medium feeding devices (21a, 21b), a plurality of use-side heat exchangers, a second heat-medium feeding device, a first heat-medium flow direction switcher device, and a second heat-medium flow direction switcher device, comprising: a refrigerant circulation cycle connecting the compressor, the heat-source-side heat exchanger, the plurality of expansion devices, and heat-source-side refrigerant channels of the plurality of heat medium heat exchangers, the refrigerant circulation cycle circulating a heat-source-side refrigerant; a plurality of first heat medium channels each connecting the heat-medium-side channel of each of the heat medium heat exchangers and each of the first heat-medium feeding devices (21a, 21b), each of the first heat medium channels circulating a heat medium different from the heat-source-side refrigerant; and a plurality of second heat medium channels each connecting each of the use-side heat exchanger and at least one of the first heat medium channels, each of the second heat medium channels circulating the heat medium, the first heat-medium flow direction switcher device being connected to a suction side of the second heat-medium feeding device and at least two of the first heat medium channels, the second heat-medium flow direction switcher device being connected to a discharge side of the second heat-medium feeding device and the first heat medium channel to which the first heat-medium flow direction switcher device is connected, and the apparatus selecting the first heat medium channel, which communicates with the second heat-medium feeding device, by controlling the first heat-medium flow direction switcher device and the second heat-medium flow direction switcher device. a refrigerant circulation cycle connecting the compressor, the heat-source-side heat exchanger, the plurality of expansion devices, and heat-source-side refrigerant channels of the plurality of heat medium heat exchangers, the refrigerant circulation cycle circulating a heat-source-side refrigerant; a plurality of first heat medium channels each connecting the heat-medium-side channel of each of the heat medium heat exchangers and each of the first heat-medium feeding devices (21a, 21b), each of the first heat medium channels circulating a heat medium different from the heat-source-side refrigerant; and a plurality of second heat medium channels each connecting each of the use-side heat exchanger and at least one of the first heat medium channels, each of the second heat medium channels circulating the heat medium, the first heat-medium flow direction switcher device being connected to a suction side of the second heat-medium feeding device and at least two of the first heat medium channels, the second heat-medium flow direction switcher device being connected to a discharge side of the second heat-medium feeding device and the first heat medium channel to which the first heat-medium flow direction switcher device is connected, and the apparatus selecting the first heat medium channel, which communicates with the second heat-medium feeding device, by controlling the first heat-medium flow direction switcher device and the second heat-medium flow direction switcher device.