What temperature setpoint should I select for my water heater and what impact will the temperature setpoint have on my energy savings?
Underwriters Laboratory (UL), the independent product safety organization that sets safety standards for water heaters and other products, requires that all new water heaters have a factory-set temperature setting of 125°F or below. So, to comply with UL standards, the GeoSpring is shipped from the factory at 120°F. The consumer should then determine their desired temperature setting based on personal preferences and the hot water capacity desired for personal use. As an example, by increasing the temperature setpoint from the factory setpoint of 120°F to 135°F the consumer will realize an approximate 25% increase in the effective volume of hot water available for normal household use. Therefore, if more hot water is desired, it is recommended that you increase the temperature setpoint to 135°F and see if there is enough hot water at that setpoint. Caution should always be exercised when adjusting the water heater temperature setpoint. The Department of Energy (DOE), looking at consume
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