Energy-saving safety water heater

The utility model relates to an energy-saving safe water heater, which comprises an inlet pipe (9), an outlet pipe (7) and a shower head (8) which is connected with the outlet pipe. The utility model is characterized in that: the water heater is provided with a single-phase power step down transformer, the secondary side of which is cascaded with the low pressure heater (4), and the both ends of the low pressure heater are communicated with the inlet pipe and the outlet pipe separately. The utility model has the advantages of reasonable structure, reducing energy consumption, preventing electrical leakage, canceling heat preservation barrel and changing the heater to direct current, with the power of low voltage and heavy current.