Electrical a water heater (100),characterized in thatthe electrical a water heater (100) comprises:a container (101) for receiving the water;a heater (111) for the electrical heating of the water in the container (101); anda scale inhibitor freely administration device for the automatic introduction of water into the calcification inhibitor freely administration device, when water in the container (101) is filled, in order to produce a calcification inhibitor solution and the calcification inhibitor solution in the container (101) to release.
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