Why Is My Water Heater Making a Rumbling Noise?

A rumbling or popping sound coming from your water heater is often a warning sign that something inside the tank is not functioning as it should. While the noise may seem minor at first, it can indicate underlying issues that reduce efficiency and shorten the lifespan of your system.

In most cases, rumbling sounds are caused by sediment buildup at the bottom of the tank. Over time, minerals from hard water settle and harden, creating a barrier between the burner and the water.

What Causes Sediment Buildup in Water Heaters?

As water heats, naturally occurring minerals like calcium and magnesium separate and settle inside the tank. This is especially common in areas with hard water. When the burner heats the tank, water trapped beneath the sediment boils and creates bubbles that force their way upward. That movement produces the rumbling or popping sound you hear.

If left unaddressed, sediment buildup can lead to overheating, reduced heating efficiency, and damage to the tank itself.

Why Rumbling Sounds Should Not Be Ignored

A noisy water heater is more than an inconvenience. It is often an early indicator of problems that can escalate quickly.

Common risks include:

• Reduced hot water output
• Increased energy bills due to inefficiency
• Premature wear on heating elements
• Tank overheating or failure
• Shortened lifespan of the water heater

Addressing the issue early can help prevent costly repairs or the need for full replacement.

What You Can Do Right Away

If you notice rumbling sounds coming from your water heater, there are a few steps you can take before calling a professional.

1. Lower the Temperature Setting

Reducing the thermostat setting can minimize overheating and limit further stress on the system.

2. Schedule a Tank Flush

Flushing the tank helps remove sediment buildup. This process involves draining the tank and clearing out accumulated minerals. While some homeowners attempt this themselves, improper flushing can damage valves or cause leaks.

3. Listen for Changes

If the noise becomes louder, more frequent, or is accompanied by inconsistent water temperature, it is time to have the system inspected.

When to Call a Professional Plumber

Persistent rumbling, especially in older water heaters, should always be evaluated by a licensed plumber. A professional can determine whether flushing is sufficient or if internal components have already been compromised.

In some cases, excessive sediment buildup may indicate that replacement is the safer and more cost-effective option, particularly if the unit is nearing the end of its expected lifespan.

How Professional Maintenance Helps Prevent Noise

Routine water heater maintenance plays a critical role in preventing sediment-related issues. Annual inspections and scheduled flushes help maintain efficiency, extend system life, and reduce the likelihood of unexpected breakdowns.

Professional maintenance also ensures that pressure relief valves, heating elements, and safety components are functioning properly.

Don’t Wait for a Breakdown

Rumbling noises are your water heater’s way of signaling that attention is needed. Acting early can protect your home, reduce energy costs, and help you avoid emergency repairs.

If your water heater is making unusual sounds, scheduling a professional inspection is the smartest next step.

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Why Flushing Matters

Your water heater works hard every day, but over time, sediment and mineral deposits accumulate inside the tank. This buildup can reduce efficiency, increase energy costs, and shorten your heater’s lifespan. Regular flushing removes these deposits, keeping your system running efficiently and safely.

What Happens If You Don’t Flush It

When sediment settles at the bottom of your tank, it acts as a barrier between the heating element and the water. This forces the heater to work harder and can cause:

• Rumbling or popping noises
• Inconsistent water temperature
• Rusty or cloudy water
• Reduced efficiency and higher bills
• Early failure or leaks

Ignoring maintenance can lead to a costly replacement years sooner than necessary.

How Often Should You Flush?

Most manufacturers recommend flushing your water heater at least once a year. However, if you live in an area with hard water (common in Michigan), flushing every 6 months is ideal.

Tankless water heaters also benefit from descaling to prevent mineral buildup in the heat exchanger.

How It’s Done

A professional plumber will:

1. Turn off the power and water supply
2. Attach a hose to the drain valve
3. Drain and flush the tank with clean water
4. Inspect the anode rod and other components for wear

This process ensures safety and performance without damaging the unit.

Extra Tip: Install a Water Softener

Pairing your water heater with a softener reduces mineral buildup, extends efficiency, and improves water quality.

Call the Experts

At Putman & Son’s Plumbing, we specialize in water heater maintenance, installation, and repair. Our experienced team helps homeowners extend their system’s life while lowering energy costs.

Schedule your annual flush today and enjoy reliable hot water all year long.

📞 248-652-0990 | 🌐 pnsplumbing.com

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A reliable water heater is crucial during the winter months, but without proper maintenance, it can fail when you need it most. Here are key signs that your water heater may need servicing before the cold sets in.

Fluctuating Water Temperature

If your shower goes from hot to cold unexpectedly, sediment buildup in the tank could be affecting its efficiency. Flushing the tank helps remove debris and improve performance.

Rusty or Discolored Water

Rusty water from your hot tap can indicate corrosion inside your water heater tank, which may require replacing the anode rod or the entire unit if the damage is extensive.

Strange Noises

If your water heater makes popping or rumbling sounds, it could be due to hardened sediment at the bottom of the tank. This buildup forces your heater to work harder, increasing wear and tear.

Water Takes Too Long to Heat

A failing heating element or a buildup of minerals can reduce the efficiency of your water heater, making it take longer to provide hot water.

Leaks Around the Water Heater

Even a small leak can indicate a bigger issue, such as internal corrosion or a loose connection. Addressing leaks early can prevent costly water damage.

The post Signs Your Water Heater Needs Winter Maintenance appeared first on Putman & Son's Plumbing.

Don’t Fall for These Common Plumbing Misconceptions

Winter weather often leads to a flurry of plumbing advice, but not all of it is accurate. Let’s separate fact from fiction to help you protect your home.

Myth 1: Dripping Faucets Prevent Frozen Pipes
Truth: While a dripping faucet can reduce pressure in the system, it doesn’t fully prevent freezing. Insulating pipes is a more reliable method.

Myth 2: You Don’t Need to Worry About Outdoor Faucets Once Disconnected
Truth: Even with hoses removed, outdoor faucets can freeze. Install frost-proof spigots or cover them with insulated covers for added protection.

Myth 3: Water Heaters Don’t Need Attention in Winter
Truth: Water heaters work harder in cold months. Flushing sediment and inspecting the unit ensures it operates efficiently.

Myth 4: Boiling Water Always Clears Clogged Drains
Truth: In winter, cold pipes can cause fats and oils to harden, making boiling water ineffective. Use enzyme-based cleaners instead.

By knowing what advice to follow, you can avoid common winter plumbing pitfalls and keep your system running smoothly.

The post Winter Plumbing Myths Debunked: What You Really Need to Know appeared first on Putman & Son's Plumbing.

A water heater is an essential part of any modern home. It can be expensive to replace. The best way to get your money’s worth is to keep it running at maximum capacity for as long as possible. The following tips will help you maintain your water heater.

• Add Insulation to Save Energy

A fiberglass insulation jacket can help your water heater operate efficiently, especially if it is an older model. Insulation can reduce heat loss by as much as 45% which can translate to up to a 9% reduction on your water heating expenses.

• Flush Sediment from the Tank

Your water heater tank should be drained at least once per year. If it’s a newer system, you may only need to drain a few gallons. Check the water for debris and sediment.

If you notice either, then you should do a full flush. To do this, turn the temperature down and empty the tank. Turn the water flow on while the drain is still open and let water flush it out for a minute or so to remove remaining sediment.

• Test the Temperature-Pressure Relief Valve

Test your temperature-pressure relief valve once per year. This is done by discharging it a few times. Look for small leaks in the valve after testing.

• Use Vacation Mode When Traveling

Vacation mode is available on gas water heater models. This setting will keep the pilot light burning without heating the water. Vacation mode should be used when you are away from home for an extended period of time.

• Inspect Annually for Leaks & Corrosion

Perform an annual water heater inspection to look for leaks or corrosion on the tank, pipes, and in the general area of the appliance. Also, make sure nothing is being stored close to the water heater.

If you need an inspection, notice issues, or have questions, contact Putman & Son’s Plumbing. We are available to help customers throughout Southeast Michigan prolong the life of their water heaters and replace them when needed.

The post 5 Water Heater Maintenance Tips That Can Save You Money appeared first on Putman & Son's Plumbing.

Frozen pipes are often a homeowner’s worst nightmare. Fortunately, there is a lot you can do as a homeowner to reduce the chance of your pipes freezing. Take time to address the following recommendations as temperature wind chills have dropped below freezing this winter already.

Proactive Measures

Take inventory of the uninsulated pipes in the unheated areas of your home. Heating uninhabitable areas is an inefficient use of energy; however, it is important for the pipes in these areas to be protected from extreme temperatures.

When indoor pipes are exposed to temperatures below freezing they can freeze within minutes and without any warning. To prevent this from happening, apply pipe insulation to every instance of vulnerable pipe. Special bend covers are available to cover non-linear sections. You should also be alert to pipes which run directly against exterior walls, even those within heated rooms. Temperature exchange between walls and pipes can occur rapidly.

Insulation is also useful for areas like attics, basements, and crawl spaces. By insulating these areas, your furnace will be able to function more efficiently and pipes naturally will remain warmer in the winter.

Keep your water heater maintained to make certain that it is fully operational this winter. Sending frigid water through extremely cold pipes is a recipe for disaster.

Need Help?

We help homeowners prepare for winter each year. To learn more about the services we offer please visit our website or contact Putman & Son’s Plumbing 24/7 hotline to schedule a visit from one of our certified master plumbers.

#PutmanandSonsPlumbing #FrozenPipes #WaterHeaters #CertifiedMasterPlumbers

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