Electric Tankless Water Heater Operating Voltage 208V AC Phase Three Cold Inlet Size 1/2 in Maximum Flow Rate 5 gpm Minimum Flow Activation 1.8 gpm Overall Height 12.25 in Overall Width 18.25 in Overall Depth 4.5 in Power Consumption 18 000 W Maximum Delivered Temperature 100 Degrees F Minimum Delivered Temperature 140 Degrees F Current 50 A Environment Indoor Market Commercial Industrial