Electric tankless heaters use exclusively electricity to heat up water. As we know, heating up water is a very demanding task. That’s why electric tankless water heaters require a strong electricity current; ie. amps. How many amps do tankless water heaters use? Tankless heaters can draw anywhere from 42 amps to 167 amps. We can … Continue reading How Many Amps Does A Tankless Water Heater Use? (42-167 Amps)