An air-conditioning apparatus comprising: a compressor configured to compress a refrigerant; a plurality of use side heat exchangers (31, 81, 82) each configured to function as a condenser or an evaporator; a plurality of expansion devices each provided for a corresponding one of the use side heat exchangers (31, 81, 82), and each configured to adjust a flow rate of the refrigerant that flows through the corresponding use side heat exchanger (31, 81,82); a heat source side heat exchanger configured to function as a condenser or an evaporator; and a controller (202, 203, 206, 207) configured to control opening degrees of the plurality of expansion devices, and a heat exchange capacity of the heat source side heat exchanger such that a saturation temperature at which the refrigerant condenses or evaporates becomes a predetermined saturation temperature target value, characterized in that during an operation in which at least one of the plurality of use side heat exchangers (31, 81, 82) functions as a condenser and rest of the use side heat exchangers (31, 81, 82) function as evaporators, in response to a request to increase heat exchange performance from a first use side heat exchanger (31, 81, 82) among the plurality of use side heat exchangers (31, 81, 82), the first use side heat exchanger (31, 81, 82) being the at least one of the use side heat exchangers (31, 81, 82) that is operating in an operation mode identical to an operation mode of the heat source side heat exchanger, the controller (202, 203, 206, 207) decreases the heat exchange capacity of the heat source side heat exchanger by changing a value of the saturation temperature target value of the heat source side heat exchanger, and controls the opening degree of the expansion devices corresponding to a second use side heat exchanger (31, 81, 82) to decrease a flow rate of the refrigerant that flows through the second use side heat exchanger (31, 81, 82), the second use side heat exchanger (31, 81, 82) being one of the use side heat exchangers (31, 81, 82) other than the first use side heat exchanger (31, 81, 82) and being at least one of the use side heat exchangers (31, 81, 82) that are operating in an operation mode identical to the operation mode of the first use side heat exchanger (31, 81, 82). a compressor configured to compress a refrigerant; a plurality of use side heat exchangers (31, 81, 82) each configured to function as a condenser or an evaporator; a plurality of expansion devices each provided for a corresponding one of the use side heat exchangers (31, 81, 82), and each configured to adjust a flow rate of the refrigerant that flows through the corresponding use side heat exchanger (31, 81,82); a heat source side heat exchanger configured to function as a condenser or an evaporator; and a controller (202, 203, 206, 207) configured to control opening degrees of the plurality of expansion devices, and a heat exchange capacity of the heat source side heat exchanger such that a saturation temperature at which the refrigerant condenses or evaporates becomes a predetermined saturation temperature target value, characterized in that during an operation in which at least one of the plurality of use side heat exchangers (31, 81, 82) functions as a condenser and rest of the use side heat exchangers (31, 81, 82) function as evaporators, in response to a request to increase heat exchange performance from a first use side heat exchanger (31, 81, 82) among the plurality of use side heat exchangers (31, 81, 82), the first use side heat exchanger (31, 81, 82) being the at least one of the use side heat exchangers (31, 81, 82) that is operating in an operation mode identical to an operation mode of the heat source side heat exchanger, the controller (202, 203, 206, 207) decreases the heat exchange capacity of the heat source side heat exchanger by changing a value of the saturation temperature target value of the heat source side heat exchanger, and controls the opening degree of the expansion devices corresponding to a second use side heat exchanger (31, 81, 82) to decrease a flow rate of the refrigerant that flows through the second use side heat exchanger (31, 81, 82), the second use side heat exchanger (31, 81, 82) being one of the use side heat exchangers (31, 81, 82) other than the first use side heat exchanger (31, 81, 82) and being at least one of the use side heat exchangers (31, 81, 82) that are operating in an operation mode identical to the operation mode of the first use side heat exchanger (31, 81, 82).