Central air-conditioning energy-saving system

The utility model provides a central air conditioner energy-saving system, and belongs to the technical field of equipment energy saving. The system comprises a control host, an environment monitoring unit, a domestic hot water monitoring subsystem, a domestic cold water monitoring subsystem and a cold and heat source monitoring subsystem. The temperature, humidity and gas concentration of the area where the central air conditioner is located are monitored through the environment monitoring unit, the environment state of the central air conditioner can be fed back to the control host in time when the central air conditioner unit breaks down, and workers can conveniently check the fault hidden danger of the air conditioner. The water supply temperature, the water supply pressure and the cooling return water temperature of the central air conditioner are monitored in real time through the domestic hot water monitoring subsystem, the domestic cold water monitoring subsystem and the cold and heat source monitorin