An indoor unit (100, 200) for an air-conditioning apparatus comprising: a casing; an air inlet provided on the casing; an air outlet opening in a bottom surface of the casing; a heat exchanger arranged in an air passage extending from the air inlet to the air outlet; a fan arranged in the air passage between the air inlet and the heat exchanger; and an air-flow-direction control plate provided in the air passage between the heat exchanger and the air outlet, wherein the heat exchanger comprises a plurality of heat exchanger blocks (10a, 10b, 10c, 10d) that are arranged in a front-and-rear direction of the casing, and the heat exchanger includes: a refrigerant inlet through which refrigerant flows into the heat exchanger; and a refrigerant outlet (83, 84) through which the refrigerant flows out of the heat exchanger, the air-flow-direction control plate is provided in a vicinity of one of the heat exchanger blocks (10a, 10b, 10c, 10d), the refrigerant outlet (83, 84) is provided in a heat exchanger block other than the heat exchanger block that is provided in a vicinity of the air-flow-direction control plate, and the number of refrigerant outlets (83, 84) is larger than the number of refrigerant inlets, and wherein the air passage branches off into a plurality of divided air passages (56a, 56b, 56c) on a downstream side of the heat exchanger, air that has passed through a first heat exchanger block without the refrigerant outlet (83, 84) among the plurality of heat exchanger blocks (10a, 10b, 10c, 10d) flows into a first divided air passage that is one of the plurality of divided air passages (56a, 56b, 56c), and the air-flow-direction control plate is disposed in the first divided air passage. a casing; an air inlet provided on the casing; an air outlet opening in a bottom surface of the casing; a heat exchanger arranged in an air passage extending from the air inlet to the air outlet; a fan arranged in the air passage between the air inlet and the heat exchanger; and an air-flow-direction control plate provided in the air passage between the heat exchanger and the air outlet, wherein the heat exchanger comprises a plurality of heat exchanger blocks (10a, 10b, 10c, 10d) that are arranged in a front-and-rear direction of the casing, and the heat exchanger includes: a refrigerant inlet through which refrigerant flows into the heat exchanger; and a refrigerant outlet (83, 84) through which the refrigerant flows out of the heat exchanger, a refrigerant inlet through which refrigerant flows into the heat exchanger; and a refrigerant outlet (83, 84) through which the refrigerant flows out of the heat exchanger, the air-flow-direction control plate is provided in a vicinity of one of the heat exchanger blocks (10a, 10b, 10c, 10d), the refrigerant outlet (83, 84) is provided in a heat exchanger block other than the heat exchanger block that is provided in a vicinity of the air-flow-direction control plate, and the number of refrigerant outlets (83, 84) is larger than the number of refrigerant inlets, and wherein the air passage branches off into a plurality of divided air passages (56a, 56b, 56c) on a downstream side of the heat exchanger, air that has passed through a first heat exchanger block without the refrigerant outlet (83, 84) among the plurality of heat exchanger blocks (10a, 10b, 10c, 10d) flows into a first divided air passage that is one of the plurality of divided air passages (56a, 56b, 56c), and the air-flow-direction control plate is disposed in the first divided air passage. the air passage branches off into a plurality of divided air passages (56a, 56b, 56c) on a downstream side of the heat exchanger, air that has passed through a first heat exchanger block without the refrigerant outlet (83, 84) among the plurality of heat exchanger blocks (10a, 10b, 10c, 10d) flows into a first divided air passage that is one of the plurality of divided air passages (56a, 56b, 56c), and the air-flow-direction control plate is disposed in the first divided air passage.