The Electric Water-heater:
some advice on how to better use electrical energy
Though not found in every home, its presence does not pass unnoticed. A widespread notion claims that consumption is less if one keeps it turned on constantly. There is nothing further from the truth. If the electric water-heater is constantly turned on, it causes a frequent request of electric energy in the course of twenty-four hours, in order to maintain the operating temperature of normally about 60°C.
Thus, every time the water in the boiler reaches about 40°C, the thermostat turns on the resistance to heat it again. Considering that hot water is needed in the home normally once or twice a day, it is easy to see how this constant reheating is useless. According to a study conducted on 1993 figures by the
Institute of Environmental Research - Italy, it emerges that the water-heater used in this manner is responsible for 47% of electrical consumption and 70% of the electric bill! Therefore, turning on the water-heater only for the two hours prior to using hot water involves a considerable savings. Even better is the possibility, at relatively modest expense, to apply a timer to the water-heater making it possible to programme it to turn on at the desired time, turning it off when not needed.
(V.DD)
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