Electric Tankless Water Heater Operating Voltage 480V AC Phase Three Cold Inlet Size 1/2 in Maximum Flow Rate 4 gpm Minimum Flow Activation 0.7 gpm Overall Height 12.25 in Overall Width 18.25 in Overall Depth 4.5 in Power Consumption 20 000 W Maximum Delivered Temperature 100 Degrees F Minimum Delivered Temperature 140 Degrees F Current 24 A Environment Indoor Market Commercial Industrial