Electric Tankless Water Heater Point-of-Use Water Heater Application Undersink Commercial Watts - Water Heaters 8000 Amps - Water Heaters 29 Voltage - Water Heaters 277 Min Flow Activation 0.70 gpm Phase - Water Heaters 1 Temp Range - Water Heaters 82 Degrees to 130 Degrees F Water Connection 3/8 in Compression Temp Rise @ 0.5 GPM 109 Degrees F Temp Rise @ 1.5 GPM 36 Degrees F Temp Rise @ 6.0 GPM 9 Degrees F Temp Rise @ 2.5 GPM - Water Heaters 22 Degrees F