To provide a heat exchanger for a bathing shower equipped with a heat exchanging slab and two sealing covers.

The heat exchanging slab is extruded by alloy material into a simple overall structure to reduce machining processes, total manufacturing costs, and selling price. A close water circulation body entirety equipped with a circulation induction means is produced in the slab, and heat exchange efficiency and an energy saving effect for a water heater are improved. By this, it results in satisfying purchasing ability and increasing eagerness to buy of a consumer. Thus, not only the invention provides profit of speed and range of sales promotion, but it also promotes environmental protection with respect to energy saving and a carbon reducing effect.

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