LIke when the wife is preparing a meal at the sink and running part hot water and part cold. I can see that thing cycling on and off a hundred times a day.With each little flow of hot water, it's chewing up 24kw of juice. Then when the flow stops, all that heat generated in the elements & heater that hasn't made it out of the heater is lost - whereas when conventional elements have power cut to them, at least the heat goes into the water to be stored for future use..
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