A heat-pump air-conditioning hot-water supply device comprising: a first refrigerant passage connecting a compressor, a first solenoid valve, a flow switching device, an outdoor-side heat exchanger, at least one decompressor (8a, 8b, 8c), and an indoor-side air-conditioning heat exchanger; a second refrigerant passage branching from between the compressor and the first solenoid valve and connecting a second solenoid valve, a hot-water supply heat exchanger, and the at least one decompressor (8a, 8b, 8c); a pressure sensor configured to measure discharge pressure of the compressor; and a control device configured to adjust an operational frequency of the compressor and adjust an opening degree of a valve of the at least one decompressor (8a, 8b, 8c), the at least one decompressor (8a, 8b, 8c) including a first decompressor connected with the outdoor-side heat exchanger, a second decompressor connected with the indoor-side air-conditioning heat exchanger, and a third decompressor connected with the hot-water supply heat exchanger, the control device being configured to calculate a condensing temperature from the discharge pressure, characterized in that the control device is further configured to perform operation in one of an air conditioning prioritized mode in which a preset operational frequency of the compressor is changed, and an energy saving prioritized mode in which the opening degree of the valve of the at least one decompressor (8a, 8b, 8c) is changed, when the condensing temperature is not lower than a set condensing temperature, reduce the operational frequency of the compressor in a simultaneous cooling and hot-water supply operation in the air conditioning prioritized mode or a simultaneous heating and hot-water supply operation in the air conditioning prioritized mode, and perform a cooling-only operation by opening the first solenoid valve, closing the second solenoid valve, fully opening the first decompressor, closing the third decompressor, and adjusting an opening degree of the second decompressor, when the operational frequency of the compressor decreases to a lowest frequency and the condensing temperature is not lower than the set condensing temperature in the simultaneous cooling and hot-water supply operation in the air conditioning prioritized mode. a first refrigerant passage connecting a compressor, a first solenoid valve, a flow switching device, an outdoor-side heat exchanger, at least one decompressor (8a, 8b, 8c), and an indoor-side air-conditioning heat exchanger; a second refrigerant passage branching from between the compressor and the first solenoid valve and connecting a second solenoid valve, a hot-water supply heat exchanger, and the at least one decompressor (8a, 8b, 8c); a pressure sensor configured to measure discharge pressure of the compressor; and a control device configured to adjust an operational frequency of the compressor and adjust an opening degree of a valve of the at least one decompressor (8a, 8b, 8c), the at least one decompressor (8a, 8b, 8c) including a first decompressor connected with the outdoor-side heat exchanger, a second decompressor connected with the indoor-side air-conditioning heat exchanger, and a third decompressor connected with the hot-water supply heat exchanger, the control device being configured to calculate a condensing temperature from the discharge pressure, characterized in that the control device is further configured to perform operation in one of an air conditioning prioritized mode in which a preset operational frequency of the compressor is changed, and an energy saving prioritized mode in which the opening degree of the valve of the at least one decompressor (8a, 8b, 8c) is changed, when the condensing temperature is not lower than a set condensing temperature, reduce the operational frequency of the compressor in a simultaneous cooling and hot-water supply operation in the air conditioning prioritized mode or a simultaneous heating and hot-water supply operation in the air conditioning prioritized mode, and perform a cooling-only operation by opening the first solenoid valve, closing the second solenoid valve, fully opening the first decompressor, closing the third decompressor, and adjusting an opening degree of the second decompressor, when the operational frequency of the compressor decreases to a lowest frequency and the condensing temperature is not lower than the set condensing temperature in the simultaneous cooling and hot-water supply operation in the air conditioning prioritized mode.