Michael, you will need to check the settings of both thermostats for the upper heating element and the lower. Set the upper one for the temperature you want the water to be, water used comes from the top of the tank. Set the lower one at a lower temperature than the upper therm. The cold water enters the tank at the bottom of the water tank from a tube usually from the top. That way the cold going in will not come out the top and mix with the hot water wanted. Also the bottom heating element is set a little lower because it helps prevent fast cycling every time hot water is used and cold enters and allows mixing at the bottom of the tank as you use the water off the top of the tank. It saves a little money by setting the bottom element lower. If saving money is not worth having a smaller amount of hot water available just set them both the same. ............bob
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