Water Heater Is Making Noise

What Should I Do If My Water Heater Is Making Noise?

Water heaters are an essential plumber appliance in our homes, providing us with hot water for various daily tasks. However, it can be quite disconcerting when your water heater starts making unusual noises. If you’ve ever wondered, “What should I do if my water heater is making noise?” you’re in the right place. In this article, we will explore the common reasons why water heaters make noise and provide you with practical solutions to address these issues.

heater and pipe maintanance with a plumbers bristol expert

Identifying the Noise

Before delving into the solutions, it’s crucial to identify the type of noise your water heater is making. Different sounds can indicate various problems. Here are some common noises and what they might signify:

Popping or Cracking Sounds

Popping or cracking sounds coming from your water heater are often due to sediment buildup in the tank. This can reduce the efficiency of your heater and lead to other issues.

Rumbling or Banging Noises

Rumbling or banging noises can be caused by overheating water or a faulty thermostat. Ignoring these sounds can lead to more significant problems down the line.

Hissing or Sizzling Sounds

Hissing or sizzling sounds may indicate a water leak near the heating element, which can be a potential hazard if left unaddressed.

Troubleshooting the Noise

Now that we’ve identified the types of noises let’s delve into how to troubleshoot and fix these issues.

Flushing the Tank

If you hear popping or cracking sounds, it’s likely due to sediment buildup. To resolve this, you can flush the tank. Here’s how:

  1. Turn off the power supply to the water heater.
  2. Connect a garden hose to the drain valve at the bottom of the tank.
  3. Open the valve and let the water drain into a bucket until it runs clear.
  4. Close the valve, remove the hose, and turn the power back on.

Adjusting the Temperature

Rumbling or banging noises often occur when the water temperature is too high. To fix this:

  1. Lower the thermostat setting on your water heater to a more reasonable temperature, usually around 49°C.
  2. Wait for a few hours to see if the noises subside.

Inspecting for Leaks

Hissing or sizzling sounds may indicate a water leak. Follow these steps to inspect for leaks:

  1. Turn off the power supply.
  2. Check for any visible signs of water around the heater.
  3. If you find a leak, it’s essential to contact a professional plumber immediately.

Preventing Future Noise

Prevention is key to ensuring your water heater remains quiet and efficient. Here are some tips to prevent noise issues:

Regular Maintenance

Schedule annual maintenance checks for your water heater to ensure it functions correctly and to catch any potential issues early.

Flushing the Tank

To prevent sediment buildup, consider flushing your water heater tank every six months.

Temperature Control

Maintain a reasonable water temperature to prevent overheating and the associated noises.

A noisy water heater can be a cause for concern, but it’s often a problem that can be resolved with some simple troubleshooting and preventive measures. By identifying the type of noise, taking appropriate action, and following maintenance tips, you can keep your water heater operating quietly and efficiently for years to come.


FAQ 1: Can I flush the water heater myself?

Yes, you can flush the water heater yourself by following the steps mentioned in the article. However, if you are unsure or uncomfortable with the process, it’s best to hire a professional.

FAQ 2: Is it normal for water heaters to make some noise?

Water heaters may produce some sound during normal operation, but loud or unusual noises often indicate an issue that needs attention.

FAQ 3: What should I do if I can’t locate a water leak?

If you suspect a leak but cannot locate it, it’s crucial to contact a plumber Bristol immediately. Ignoring hidden leaks can lead to water damage and increased utility bills.

FAQ 4: How often should I schedule maintenance for my water heater?

Annual maintenance is recommended for water heaters to ensure they function optimally. However, more frequent maintenance may be necessary if you notice any issues.

FAQ 5: Can high water pressure cause noise in my water heater?

Yes, high water pressure can contribute to noises in your water heater. Consider installing a pressure-reducing valve if you have consistently high water pressure in your home.

Water Heater Is Making Noise
Scroll to top