| 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, a second restriction part having a shallower depth than a restriction part is partially arranged along a peripheral edge of a lower mirror plate of a hot water storage chamber, a protrusion part protruding in a ring shape toward the center side of the lower mirror plate is arranged between the restriction part and the second restriction part, and a burner is provided so as to position a burner head of the burner to face the protrusion part.
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