A heat pump type hot water supply outdoor apparatus comprising: a compressor, a water heat exchanger for carrying out heat exchange between water and refrigerant, a first pressure reduction unit, a medium pressure receiver, a second pressure reduction unit, and an air heat exchanger for carrying out heat exchange between air and refrigerant, the compressor, the water heat exchanger, the first pressure reduction unit, the medium pressure receiver, the second pressure reduction unit, and the air heat exchanger being connected circularly, the air heat exchanger receiving heat supply from outside air, the water heat exchanger supplying heat to water; an injection circuit which is a bypass for a part of the refrigerant between the medium pressure receiver and the second pressure reduction unit, to inject the part of refrigerant into a compression chamber of the compressor, and has a third pressure reduction unit and an internal heat exchanger for carrying out heat exchange between the refrigerant whose pressure is reduced by the third pressure reduction unit and the refrigerant between the medium pressure receiver and the second pressure reduction unit; characterized by further comprising: a pressure detection sensor disposed in the vicinity of a discharge port of the compressor for detecting a condensing pressure of the refrigerant; and a controller for carrying out a control for starting and stopping an injection control, wherein the controller carries out the control for starting the injection control at the time when a condensing pressure detected by the pressure detection sensor or a condensing temperature calculated from the condensing pressure becomes a first predetermined value or more, and the controller carries out the control for stopping the injection control at the time when the condensing pressure detected by the pressure detection sensor or the condensing temperature calculate from the condensing pressure becomes a second predetermined value, which is smaller than the first predetermined value, or less; wherein the controller is further configured to hold the state of carrying out or not carrying out the injection control when the condensing pressure or the condensing temperature calculated from the condensing pressure becomes the second predetermined value or more and the first predetermined value or less. a pressure detection sensor disposed in the vicinity of a discharge port of the compressor for detecting a condensing pressure of the refrigerant; and a controller for carrying out a control for starting and stopping an injection control, wherein the controller carries out the control for starting the injection control at the time when a condensing pressure detected by the pressure detection sensor or a condensing temperature calculated from the condensing pressure becomes a first predetermined value or more, and the controller carries out the control for stopping the injection control at the time when the condensing pressure detected by the pressure detection sensor or the condensing temperature calculate from the condensing pressure becomes a second predetermined value, which is smaller than the first predetermined value, or less; wherein the controller is further configured to hold the state of carrying out or not carrying out the injection control when the condensing pressure or the condensing temperature calculated from the condensing pressure becomes the second predetermined value or more and the first predetermined value or less.