Electric Tankless Water Heater Point-of-Use Water Heater Application Sanitation Commercial Watts - Water Heaters 36 000 Amps - Water Heaters 43 Voltage - Water Heaters 480 Min Flow Activation 1 gpm Phase - Water Heaters 3 Temp Range - Water Heaters 0 Degrees to 180 Degrees F Water Connection 1-1/4 in NPT Temp Rise @ 1.5 GPM 163 Degrees F Temp Rise @ 6.0 GPM 40 Degrees F Temp Rise @ 2.5 GPM - Water Heaters 98 Degrees F Temp Rise @ 4.0 GPM 61 Degrees F