The water heater is used to heat water. The range of electric accumulators works with electrical energy being constituted by a water tank, which stores the water, heated by an electric resistance. They are equipped with one more electrical resistors that allows the heating of the water in a safe way, as well as with a thermostat of temperature regulation, with a thermal limiter of double security, allowing the regulation of the temperature appropriate to its use and preventing the overheating in in case of failure. They can be installed in small places, do not require ventilation and the heat losses are small since they have a high density thermal insulation with a thickness of 40 mm. They can be equipped with magnesium anode, to reduce the effects caused by electrolysis, guaranteeing the longevity of the product. The interior is constructed of stainless steel AISI 304 or AISI 316.