Savings of up to 50% on water heating costsDigital temperature control in 1-degree increments allows control of hot waterCopper and stainless components designed for efficiency, durability and easy replacementCompact size saves valuable storage space, while the stylish and advanced design is pleasing to the eyePrior to purchase & installation, please verify that this model will function with your electrical capacity. Electrical requirements: 27 kW, 240 volts, Single phase, 3 x 40 required breakers, 112.5 maximum power draw (Amps), 3 x 8 AWG required wire.