Electric water heater not working troubleshooting

If your water heater is not working, and the water is not getting hot. Or the water is hot at the beginning but becomes lukewarm after a few minutes, you can troubleshoot it yourself. You’ll need a basic multimeter to check the voltage and resistance or continuity of the heating element and the thermostat. But with a clamp meter, you can check the current flow through the element in Amps.