Electric Resistance
Water Heaters
Electric water heaters operate by resistance elements
within the water containment tank. These units can be equipped
with either one or two elements. Models with two elements usually
have one located in the upper portion, and one in the lower portion.
Each element has an individual thermostat control found behind
the access plates.
When hot water is needed, it is drawn from
the top of the tank and replaced by cold water entering at the
bottom through a tube.
When the demand for hot water is low, the lower heating
element operates to maintain the water temperature. As hot water
demand increases, the upper heating element comes on to maintain
the water temperature. Hot water is drawn from the top of the
tank. the top element turns off, and the lower element comes back
on to maintain the set temperature.
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