Your home's water heater is one of those appliances that you rarely think about—until you turn on the shower and get hit with a blast of ice-cold water. To prevent unexpected failures and extend the lifespan of your unit, regular preventative maintenance is essential. In this article, our certified master plumbers outline the critical steps you can take to keep your tank operating at peak efficiency.

Why Tank Flushing is Necessary

Over time, municipal tap water brings tiny amounts of dissolved minerals and sediment into your tank. As water is heated, these minerals solidify and settle at the bottom of the reservoir. This sediment layer acts as a barrier between the heating burner and the water, forcing your system to run longer, consume more gas or electricity, and eventually overheat the steel bottom, causing cracks.

Flushing Steps Checklist

If you feel comfortable performing basic maintenance, follow this process once a year:

• Turn Off Power: Cut off the circuit breaker for electric heaters, or turn the gas valve control to the "Pilot" position.
• Shut Off Cold Water: Close the cold water supply valve located at the top of the heater.
• Connect a Hose: Secure a standard garden hose to the drain valve at the bottom of the tank and run the other end to a floor drain or driveway.
• Open a Hot Faucet: Open any hot water faucet inside your home to break the vacuum line and allow water to flow.
• Drain the Tank: Open the drain valve slowly. Let all water empty until it runs clean of sediment chips.

If your unit is more than 8 years old and has never been flushed, we recommend booking a professional check, as old valves can break when opened, causing active water leaks.