Patent ID: 7810456

Claim:
A storage water heater comprising: a hot-water tank that stores hot water; a water supply pipe through which water is supplied into the hot-water tank; a heating means provided outside of the hot-water tank to heat the hot water in the hot-water tank; a lead-in pipe that takes out the hot water from inside of the hot-water tank to lead into the heating means; a lead-out pipe that leads out warm water heated by the heating means into the hot-water tank; and a hot-water output pipe through which the hot water stored in the hot-water tank is output, wherein an inlet of the lead-in pipe is positioned on a bottom portion or a lower portion of the hot-water tank and is positioned at a height equal to or lower than a height of an outlet of the water supply pipe, wherein the outlet of the water supply pipe and the inlet of the lead-in pipe are provided so as to be opposed to each other on a same axis.