Often exceeds a 20% reduction in fuel cost!
The Savastat modular programmable controller is an electronic water heater control designed to optimize the fuel efficient operation of gas and electric water heaters.
The unit is set up for four time periods, mirroring the expected main water demand. During the timed periods, the water heater operates in normal mode. Outside the pre-set time periods, the unit is switched off and in "reactive" mode, constantly monitoring the hot water temperature.
When stored water temperature decays or is lowered by an unexpected load, to the pre-set "reactive temperature," the unit will re-activate the heater, to a pre-set "reactive time." During this time period the thermostat on the appliance will take over as normal.
