8 steps to replace anode rod: 1. Turn off the power. Flip the circuit breaker to the water heater on the electrical panel. Use a non-contact voltage tester on the water heater to ensure it is off. 2. Dig out the foam insulation around the old anode rod and vacuum out the loose bit. 3. When the water supply is on, drain a few gallons (about 5.7 L) to flush the bottom of the tank, then turn off the water supply and allow more gallons to drain. 4. Remove the old socket using a 1 1/16 impact sleeve and a corded impact gun (using an impact gun is so easy!). . 5. Place the old rod in the recycling. 6. Wrap Teflon tape around the top thread of the new rod about four times. 7. Place the new rod in and tighten it using an ordinary old socket wrench. 8. Turn on the water supply, then turn on all hot water faucets around the house for about 30 seconds each. Let the hot water faucet run a little to remove air from the system, and if there is air in the water heater, it can protect you from blowing out elements.