At what temperature is the ECO set to operate in residential water heaters?

The ECO, or Energy Cut Off, is a safety feature in residential water heaters designed to prevent overheating and potential hazards associated with excessively high water temperatures. In most cases, the ECO is set to operate around 200 degrees Fahrenheit. This temperature serves as a critical threshold that ensures the water heater can function efficiently while also providing protection against risks such as scalding or system failures.

Setting the ECO at this temperature allows for a balance between adequate hot water supply and safety, as it is high enough to deliver comfortable hot water for household use but low enough to mitigate risks of overheating. Therefore, recognizing that 200 degrees Fahrenheit is commonly assigned as the operational temperature for the ECO in residential water heaters helps reinforce the importance of safety mechanisms in home heating systems.