Water heater maintenance is often overlooked—until there’s a problem. You may have heard that flushing your water heater can help it last longer, but is it really necessary? The short answer: YES—but there are risks if it’s not done correctly.
In this post, we’ll explain the importance of water heater flushes, common problems that can arise, and why it’s often best to leave it to the professionals.
A water heater flush is a maintenance process that involves draining and cleaning the tank to remove sediment buildup. Over time, minerals like calcium and magnesium from hard water settle at the bottom of your tank, creating sediment buildup that can:
✔ Reduce efficiency – Your heater has to work harder to heat water.
✔ Cause strange noises – Popping or rumbling sounds? That’s trapped sediment.
✔ Shorten lifespan – Excess sediment can lead to overheating and internal damage.
✔ Decrease hot water supply – Less space in the tank means less available hot water.
Without regular flushing, your water heater could fail prematurely, leading to costly repairs or replacement.
The short answer: YES!
Regular water heater flushes help maintain efficiency, performance, and longevity. If your heater is not flushed, sediment buildup can corrode the tank, leading to costly repairs or even early replacement.
🚨 Water takes longer to heat up
🚨 Strange popping or banging noises
🚨 Rusty or discolored water
🚨 Hot water runs out faster than usual
🚨 Higher energy bills without explanation
If you notice these signs, a water heater flush may be overdue. However, sediment buildup can also block the drain valve, making the flush difficult or leading to new issues—something a professional plumber can handle safely.
The recommended frequency depends on your water quality:
🔹 Once a year – If you have normal to moderately hard water..
🔹 Every 2 years – If you have a water softener installed.
Regular maintenance can extend your water heater’s life, improve efficiency, and prevent unexpected breakdowns.
A DIY flush is possible, but be aware of potential risks:
🚨 Clogged Drain Valve – Heavy sediment buildup can block the valve, making it difficult to drain.
🚨 Leaking Drain Valve – Over time, valves can wear out and fail to close properly.
🚨 Tank Damage – If the sediment has hardened, improper flushing can damage the interior lining.
🚨 Gas Line Issues – If you have a gas water heater, incorrectly shutting it off and relighting the pilot can be hazardous.
🚨 Scalding Hazard – Hot water can cause burns if not handled carefully.
If your water heater hasn’t been flushed in years, attempting a DIY flush could create new problems. That’s why it’s often best to hire a licensed professional who can safely perform the flush and inspect for potential issues.
A professional plumber can:
✔ Properly drain and flush your tank without damaging components.
✔ Check for leaks, rust, or other issues that may need repair.
✔ Ensure your gas or electric unit is safely shut off and restarted.
✔ Replace worn-out drain valves or anode rods if necessary.
At LGE Prime Plumbing, we specialize in water heater maintenance, repairs, and replacements to keep your hot water flowing without issues.
