Hearth heat energy water heater

The utility model discloses a hearth heat energy water heater, and relates to heating equipment used by families in countryside. The water heater consists of a cooking bench, a hearth heating water heater, an expansion tank and a radiator, and is characterized in that the hearth heating water heater is horizontally installed inside a hearth body close to the upper part of a flue of the cooking bench; the hearth heating water heater is a hollow water receiver, one end of the heath heating water heater is provided with an upward semicircular bulge, and the other end thereof is provided with a downward semicircular bulge; two ends of the semicircular bulge are respectively provided with a connector which is connected with one end of a water supply pipe, and the other end of the water supply pipe is connected with the water inlet of the radiator; and the water outlet of the radiator is connected with a return pipe which is provided with a T joint, one end of T joint is connected with the expansion tank by the ret