Abstract: A process for conserving energy while operating a water heater includes the steps of programming a system controller with at least one time interval and assigning a target temperature, comparing the current time to the programmed time interval and the current water temperature setting for the water heater against the target temperature, and heating the water as long as the current time is within the time interval and the water temperature setting is less than the target temperature. An energy saving switch includes a programmable logic controller, geared control shafts, a motor, a control lever, and a mating cuff. Together, these members control the water heater thermostat control valve to ensure that hot water is available only during the times of day when it is required.

Abstract: A process for conserving energy while operating a water heater includes the steps of programming a system controller with at least one time interval and assigning a target temperature, comparing the current time to the programmed time interval and the current water temperature setting for the water heater against the target temperature, and heating the water as long as the current time is within the time interval and the water temperature setting is less than the target temperature. An energy saving switch includes a programmable logic controller, geared control shafts, a motor, a control lever, and a mating cuff. Together, these members control the water heater thermostat control valve to ensure that hot water is available only during the times of day when it is required.