Step 1 · Shut Off Power at Circuit Breaker

Navigate to your home's main electrical panel (breaker box). Locate the double-pole circuit breaker dedicated to the water heater; it is typically labeled and requires two slots. Firmly move the breaker switch to the 'OFF' position. As a safety precaution, you can place a piece of tape over the breaker to signal that work is in progress and prevent accidental reactivation.