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What does ECO INSTALLED mean on a water heater data sticker?
Friday, February 11, 2022
The ECO stands for Energy Cut-Off, and is installed in both gas and electric water heaters. Here is how General Electric describes it in their owner’s manuals for electric water heaters: “The water heater is equipped with a combination thermostat and high limit Energy Cut-Off control (ECO) that is located above the heating element in contact with the tank surface. If for any reason the water temperature becomes excessively high, the high limit control (ECO) breaks the power circuit to the heating element. Once the control opens, it must be reset manually."
The ECO safety device is intended to keep the water heater from overheating the water to the point that it boils and the tank explodes. ECO acts in tandem with the Temperature-and-Pressure-Release (TPR) valve on the side or top outside surface of the water heater, which opens to release the super-hot water if the tank actually does overheat.
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