Hot water supply system

The utility model discloses a hot water supply system, including check valve, heat source water tank, circulating water pump, valve and water section switch, still including storing hot control by temperature change water tank, the one end of storing hot control by temperature change water tank is passed through the valve and is connected with the heat source water tank, and the other end is connected with circulating water pump, stores the hot water supply that hot control by temperature change water tank is used for the auxiliary heat source water tank, and the back just can acquire hot water constantly to guarantee to start once the end user at hot water supply system. The utility model discloses owing to has adopted and has store hot control by temperature change water tank, perhaps through storing control by temperature change contact circuit in the hot control by temperature change water tank to the measuring of temperature, cold water in the in good time control system self -heating hot water pipeline,