change a water heater element by alvinbowen


									                                    Water Heater Thermostat Setting
Why should I change my water heater thermostat setting?
On average a family of four will use approximately 26,000 gallons of hot water per year for showers. The cost to heat that quantity of water is directly related to the thermostat
setting on the water heater. The higher the set point on the thermostat the more it will cost. The same family of four can save around $100 annually by reducing their
thermostat setting from 140 F to 120 F.

Note: The U.S. Department of Labor Occupational Safety and Health Organization (OSHA) has voiced concern regarding the growth of Legionella bacteria in water heaters
where the temperature is below 140 F. To learn more, please review the OSHA technical manual (section III chapter 7) that can be accessed through their website at

What do I need to know about my water heater thermostat setting?
The instructions for adjusting your water heater thermostat should be located on the side of the water tank next to the control access door. Read and follow the directions
provided by the manufacturer.

What are my options for changing my water heater thermostat setting?
The thermostat should be adjusted to the lowest setting that still provides sufficient hot water to meet your family’s needs. Experiment until the appropriate setting is reached.

How much is changing my water heater thermostat setting going to save me?

                                                 Potential Savings by Reducing the Thermostat Setting on Your Water Heater

                       Temperature Setting                          120 F                                       130 F                                             140 F

                    Annual Water Heating Cost                        $254                                       $307                                              $360

                       Potential Savings                             $106                                        $53                                               —
                   (moving down from 140 F)

Assumes: Energy cost of $.09 kWh (JEA Oct. 2006 Rate)

For more information visit the conservation section of our website at or contact us via email at


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