How Does a Water Heater Work?

A. Cold water is drawn into the bottom of the tank, causing the lower element to come on.

B. As hot water is depleted, the priority element (upper) comes on, shutting down the lower element.

C. The upper element is satisfied, so the lower element can turn back on and finish heating the rest of the thank.

D. Both elements are satisfied, the lower element turns off.

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