How It Works

An electric boiler is installed alongside (in parallel) your existing natural gas-fired boiler(s). You compare your gas prices to your electric rates for a given timeframe and you produce steam with whichever boiler can provide the lowest cost option. A controller can be installed to perform this cost comparison automatically. When the electric energy price provides the lowest steam cost option, the electric boiler is turned on and runs 5 psi higher than the gas boiler(s), which is their signal to turn off. When electricity costs are higher than natural gas, the electric boiler receives a signal to turn off and the gas boiler(s) senses the drop in steam pressure and thus, turns on. 

  

Electric Boiler Diagram