Non-raw water full automatic water heater

A full automatic water boiler with no raw water belongs to the appliance of daily living article. The utility model mainly comprises a water tank and a water outlet. The water tank is internally provided with a heating pipe, a high water switch, a low water switch and a middle water switch. A floating ball is matched with the middle water switch. The floating ball is matched with the high water switch and the low water switch. The high water switch, the low water switch and the middle water switch are respectively connected with the heating pipe through a leading wire. As the water tank of the utility model is provided with the low water switch, middle water switch and high water switch which are respectively matched with two floating balls, cold water can not be in until water is almost drained; thereby preventing the cold and hot water from combining so as to ensure that the water in the water tank can not be heated repeatedly to improve the quality of hot water.