To purge a hot water heater, follow these steps:
• Turn off power. Shut off the electricity to the water heater by flipping the circuit breaker switch or turning the gas knob to pilot.
• Connect hose. Place one end of a garden hose into an open drainage area and attach it to the drain valve at the bottom of your tank.
• Open valve. Slowly turn on the cold water supply valve located near your hot water tank and allow it to fill with several gallons of fresh cold water.
• Purge air from system. Once you've filled up several gallons in your tank, open both pressure relief valves and wait for all air pockets within your system to be purged out before shutting them back again.
Purging a hot water heater is an important step in ensuring its optimal performance and longevity - following these steps will help ensure that yours is running efficiently for years to come!