| 摘要 |
The object is to provide a water heater capable of efficiently transmitting radiation heat of a burner to hot water in a hot water storage chamber, and improving thermal efficiency. In water heater 1, a second restriction part 9 having a shallower depth than that of a restriction part 8 is partially arranged along a peripheral edge of a lower mirror plate 3 of a hot water storage chamber 4, a protrusion part 10 protruding in a ring shape toward the center side of the lower mirror plate 3 is arranged between the restriction part 8 and the second restriction part, 9 and a burner 6 is provided so as to position a burner head 16 of the burner 6 to face the protrusion part 10.
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