Savings of up to 50% on water heating costs. Dimensions :17H x 17W x 3.625D inches ;Pipes fittings :3/4 inch NPTDigital temperature control in 1-degree increments allows control of hot waterCopper and stainless components designed for efficiency, durability and easy replacement.Compact size saves valuable storage space, while the stylish and advanced design is pleasing to the eye and Copper and stainless components designed for efficiency, durability and easy replacement.Prior to purchase & installation, please verify that this model is the right size for your hot water needs and electrical requirements. Electrical requirements: 27 kW, 240 volts, (3) 40 required breakers, 112.5 maximum power (AMP), (3) 8 required wire.Required Breaker Quantity: Three 40 Amp Double PoleRecommended Electrical Panel: 200 AmpsNEVER run out of hot water with an ECOSMART tankless water heater.Save up to 12 cubic feet of storage space.Digital temperature control in 1-degree increments gives users complete control of hot water