An air-conditioning apparatus comprising: a heat source side refrigerant circuit to which a compressor, an outdoor heat exchanger, a refrigerant flow amount control device and an intermediate heat exchanger are connected in sequence, a circulation device connected with one end of a use side circuit that performs heat exchange between the intermediate heat exchanger and the heat source side refrigerant circuit, and a use side refrigerant circuit having a plurality of indoor heat exchangers whose one end is connected with the circulation device and the other end is connected with the other end of the use side circuit of the intermediate heat exchanger, wherein, the compressor and the outdoor heat exchanger are installed in an outdoor unit, the intermediate heat exchanger and the circulation device are provided at a relay portion, the indoor heat exchanger is provided in an indoor unit, in the use side refrigerant circuit, at least one of water and an antifreezing fluid circulates as a use side refrigerant, in the use side refrigerant circuit, an indoor unit refrigerant flow amount control device is provided that controls a flow amount of the use side refrigerant flowing in the indoor heat exchanger for each indoor heat exchanger, characterized in that the refrigerant flow amount control device is provided at the relay portion, the indoor unit refrigerant flow amount control device controls the flow amount of the use side refrigerant flowing in the indoor heat exchanger based on the temperature of the use side refrigerant flowing into the indoor heat exchanger and the temperature of the use side refrigerant flowing from the indoor heat exchanger, and the indoor unit refrigerant flow amount control device is provided at the relay portion. a heat source side refrigerant circuit to which a compressor, an outdoor heat exchanger, a refrigerant flow amount control device and an intermediate heat exchanger are connected in sequence, a circulation device connected with one end of a use side circuit that performs heat exchange between the intermediate heat exchanger and the heat source side refrigerant circuit, and a use side refrigerant circuit having a plurality of indoor heat exchangers whose one end is connected with the circulation device and the other end is connected with the other end of the use side circuit of the intermediate heat exchanger, wherein, the compressor and the outdoor heat exchanger are installed in an outdoor unit, the intermediate heat exchanger and the circulation device are provided at a relay portion, the indoor heat exchanger is provided in an indoor unit, in the use side refrigerant circuit, at least one of water and an antifreezing fluid circulates as a use side refrigerant, in the use side refrigerant circuit, an indoor unit refrigerant flow amount control device is provided that controls a flow amount of the use side refrigerant flowing in the indoor heat exchanger for each indoor heat exchanger, characterized in that the refrigerant flow amount control device is provided at the relay portion, the indoor unit refrigerant flow amount control device controls the flow amount of the use side refrigerant flowing in the indoor heat exchanger based on the temperature of the use side refrigerant flowing into the indoor heat exchanger and the temperature of the use side refrigerant flowing from the indoor heat exchanger, and the indoor unit refrigerant flow amount control device is provided at the relay portion.