Category : Water Heater

Water Heater Sounds Like a Jet Engine-Problem & Solution

Water heater

Regular maintenance is crucial to prevent your water heater from producing loud noises that resemble a jet engine.

This article provides insights into the possible causes of Water Heater Sounds Like a Jet Engine and offers solutions to address the issue effectively.

By following these steps, you can enhance the performance and longevity of your water heater.

Why Do Water Heaters Make Loud Noises?

1.Sediment Buildup

Over time, minerals and debris from the water supply accumulate at the bottom of the water heater tank.

When heated, these particles can harden and create a barrier between the heating element and the water.

The resulting pressure and bubbling can generate loud bursting noises.


Excessive sediment and debris on the tank’s bottom obstruct the water heating process.

This elevates the temperature of the heating element, causing the water to boil excessively or heat up rapidly.

As a result, your water heater may emit jet engine-like sounds.

3.Thermal Expansion

When water heats up, it expands, leading to increased pressure inside the tank.

Malfunctioning pressure relief valves or the absence of an expansion tank can contribute to noise.

The sudden release of pressure when the valve opens can create booming sounds.

4.Age and Wear

Old water heaters may produce loud noises due to worn-out components such as heating elements, dip tubes, or internal baffles.

These degraded parts can cause unusual sounds during the operation of the water heater.

5.Inefficient Design

Poorly designed or insufficiently insulated water heaters can generate excessive noise.

Inefficient heat transfer, inadequate soundproofing, or poor airflow can exacerbate the noise issue.

6.Other Factors

Additional problems like a malfunctioning burner, broken gas valve, or improper combustion can also contribute to noisy water heaters.

Effects of the Problem on Water Heaters

1.Reduced Efficiency

Accumulated sediment forms a barrier between the heating element and the water, impeding heat transfer.

This forces the water heater to work harder and longer to achieve the desired water temperature.

Consequently, the water heater’s efficiency decreases, leading to higher energy consumption and elevated utility bills.

2.Increased Wear and Tear

Sediment and mineral buildup accelerate the deterioration of various water heater components.

The insulating barrier created by sediment increases heat stress on the heating element and other internal parts, causing premature wear and potential failure.

Consequently, frequent repairs or the need for a replacement may arise.

3.Decreased Lifespan

Continuous overheating and stress accelerate the aging process of a water heater.

If exposed to these conditions persistently, the water heater may fail prematurely, necessitating replacement.

4.Noise Disruption

Water heaters located near living spaces or bedrooms can be disruptive due to their noise.

This noise can lead to sleep disturbances, annoyance, and discomfort in the surrounding area.

5.Potential Safety Hazards

Excessive pressure resulting from heat and sediment can pose safety risks.

A malfunctioning pressure relief valve or absence of an expansion tank can lead to bursting, leaks, or even explosions.

These incidents can cause harm to individuals and property.

6.Inconsistent Hot Water Supply

Sediment buildup within the water heater can obstruct pipes, hampering the flow of hot water.

This inconsistency in water temperature can be frustrating during activities such as showering or dishwashing.

Steps to Diagnose the Issue

1.Listen for Unusual Noises

Carefully listen to the sounds emitted by your water heater during operation. If you hear loud, deep noises resembling a jet engine, it indicates a potential problem.

2.Observe Fluctuating Water Temperatures

Monitor whether the water temperature fluctuates significantly, alternating between hot and cold.

Fluctuations may indicate sediment buildup or other issues affecting the water heater’s performance.

3.Check for Leaks

Inspect the surroundings of the water heater for any signs of leaks. The excessive pressure caused by sediment accumulation can cause tank or pipe ruptures, leading to noise and potential damage.

4.Assess Hot Water Flow

Examine the flow rate and pressure of hot water from the faucets. Reduced flow or pressure may indicate sediment clogging the plumbing lines.

5.Inspect the Pilot Light (For Gas Water Heaters)

For gas-powered water heaters, ensure that the pilot light is burning consistently. Flickering or inconsistent pilot flames may indicate problems with the gas supply or combustion.

6.Consider the Age of the Water Heater

Take into account the age of your water heater, as older units are more prone to issues and may require detailed inspection and maintenance.

7.Consult a Professional

If you are unsure about troubleshooting the problem or if it persists after your attempts, seek assistance from a professional plumber or water heater technician.

They possess the expertise and tools to identify the problem accurately and recommend the necessary actions.

Fixing a Noisy Water Heater

Step 1: Turn off the Power

Before initiating any troubleshooting or maintenance procedures, ensure that the water heater’s power supply is switched off. This precaution prevents potential electrical hazards during the process.

Step 2: Drain the Water Heater Tank

  • Connect a garden hose to the drain valve located near the bottom of the water heater tank. Direct the other end of the hose to a suitable drainage location, such as a floor drain or outdoor area.
  • Open the drain valve and allow the water to flow out of the tank. Take caution as the water might be hot. Completely drain the tank until the water runs clear, indicating the removal of sediment and mineral buildup.
  • Once drained, close the drain valve.

Step 3: Flush the Tank

  • Close the drain valve and turn on the cold water supply to the water heater.
  • Allow the cold water to flow into the tank and out through the open hot water faucets for a few minutes. This process helps flush out any remaining loose sediment and debris from the tank.
  • Flushing the tank improves overall cleanliness and enhances the water heater’s performance.

Step 4: Check the Anode Rod

  • Locate the anode rod, typically situated at the top of the water heater tank. The anode rod attracts corrosion to protect the tank from damage.
  • Check the anode rod. If it looks very corroded or worn out, it might need to be replaced. Ask the manufacturer or a plumber for help to find the right way to replace it and the right kind of anode rod for your water heater.

Step 5: Adjust the Thermostat

  • Examine the thermostat setting on the water heater, usually located on the front or side of the tank.
  • Lower the thermostat temperature to a moderate level, around 120°F or 49°C. This will help prevent overheating and excessive noise generation.
  • Adjusting the thermostat to an appropriate temperature also improves energy efficiency and reduces utility costs.

Step 6: Seek Professional Help

  • If the problem persists after performing the above steps or if you feel uncomfortable with DIY troubleshooting, it is advisable to seek professional assistance.
  • A professional plumber or water heater technician can accurately diagnose the issue, perform advanced maintenance or repairs, and ensure the water heater operates safely and efficiently.
  • They possess the expertise, tools, and knowledge to address any underlying problems or provide recommendations for further action.

Step 7: Regular Maintenance

  • Emphasize the importance of regular maintenance to prevent future sediment buildup and related water heater issues.
  • Encourage readers to flush the water heater tank annually to remove accumulated sediment.
  • Recommend periodic inspections of the anode rod and replacement when necessary.
  • Suggest scheduling professional maintenance services to ensure optimal water heater performance and early identification of potential problems.


To prevent your water heater from producing loud and disruptive noises resembling a jet engine, regular maintenance is crucial.

By following the steps outlined in this article, you can identify and resolve the issue, ensuring safe and efficient operation of your water heater for years to come.

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Q1. How often should I flush my water heater?

It’s a good idea to clean your water heater tank once a year to get rid of dirt and debris. This makes it work better, quieter, and last longer.

Q2. Can I fix a noisy water heater myself?

To fix a noisy water heater, you can do tasks like draining and flushing the tank, checking the anode rod, and adjusting the thermostat. If you’re not sure or the issue continues, it’s best to hire a professional for safety and efficiency.

Q3. Will regular maintenance prevent future water heater issues?

Keeping your water heater working well is important. To do this, you should flush the tank once a year, check the anode rod periodically, and get professional maintenance services. This will help ensure that it works great and doesn’t have any problems.

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