Flushing Your Water Heater: Why It Matters and How It’s Done

Like any appliance, your water heater needs a little attention from time to time. One of the most important maintenance tasks is flushing the tank. It’s simple enough for confident homeowners to do themselves, but comprehensive tune-ups are best left to a trained plumber.

In this brief article brought to you by Texas Rooter, we explain what flushing a water heater involves, why it’s so important, and how to do it safely. If you ever need emergency water heater repair, you can rest assured knowing Texas Rooter is always ready to help.

What Does Flushing a Water Heater Mean?

If you're like most people, then your water heater stores and heats water in a tank. Over time, minerals like calcium and magnesium will start to build up at the bottom of the tank. This sediment comes from the natural minerals found in your tap water.

Flushing the tank means draining out all of the water - along with the sediment that has collected. This helps your water heater run more efficiently and last longer.

Why Flushing the Tank Matters

If sediment builds up in the tank and is not removed, it can cause a number of problems:

• Lower Water Temperature: Sediment forms a layer between the heating element and the water. This makes it harder for the water to heat properly.
• Strange Noises: Banging or rumbling sounds is likely from the sediment moving around as the heater operates.
• Higher Energy Bills: It costs energy when your water heater has to work harder to heat water.
• Shorter Lifespan: Too much buildup can cause the tank to overheat and even lead to cracks, leaks, and costly damage.

Regular flushing can prevent these issues and may even help you avoid a premature water heater replacement. Don't overlook maintenance. It's a worthwhile investment.

How Often Should You Flush It?

Most manufacturers recommend flushing the water heater tank once a year. If you have especially hard water in your area, then you might want to do it twice a year. If you’re unsure, then give Texas Rooter a call to consult with a trained plumber. It's always better to be safe than sorry.

How to Flush Your Water Heater (DIY Style)

Flushing a water heater is a manageable job if you’re comfortable handling basic home maintenance. Here's a basic step-by-step guide:

• Turn Off Power: If you have an electric water heater, shut off power at the breaker box. If it’s gas, then turn the thermostat to the "pilot" setting.
• Shut Off Water: The water shutoff valve is usually at the top of the water heater. Turning it off stops more water from entering the tank.
• Let it Cool: Hot water can cause burns, so wait at least a couple of hours or even overnight for the tank to cool down before continuing.
• Attach a Hose to Drain Valve: Place the other end of the hose in a floor drain, outside, or into a large bucket. Open the valve and let the water drain out.
• Flush with Fresh Water: Once the tank is empty, briefly turn on the cold water supply to stir up any remaining sediment. Then, drain again.
• Close Everything Up: Shut the drain valve, remove the hose, turn the cold water back on, and restore power or gas. You’ll typically need to wait about 30–60 minutes for the water to reheat.

When to Call the Pros at Texas Rooter

While flushing is a great DIY task, it's not always enough to keep your system running perfectly. If you're hearing odd noises, noticing rust in your water, or experiencing inconsistent hot water, then it could be time for a more thorough inspection.

The dedicated team at Texas Rooter is always ready to deliver quick and affordable plumbing repair service. Call or message us today to get in touch with a live representative.