296 Brock Ave, Toronto, ON M6K 2M4

5 Reasons Behind Water Heater Making Noise

by | May 22, 2025

We all need a water heater. Especially on chilly days, we can not imagine our daily life without a water heater. A weird noise from a water heater can be frustrating and scary. You must have experienced a small ring-like voice to a loud bell-like voice. Well, you will be surprised to know that many types of water heater noise pop from water heater, and each has a different meaning. 

Usually, when we hear any kind of water heater noise we feel something is going wrong with the tank. You can be relaxed because your water heater is not in danger but you should solve this on time. No matter how small or big the issue is, you can solve it by understanding it deeply. 

In this blog, we will talk about the reasons behind water heaters making noise. Being a house-owner getting worried about the plumbing damage is understandable. Water heater noise can create serious damage if you do not solve it on time.  

What Is The Sound Coming From My Water Heater? 

Water heater sound is a common issue for all of us. There are multiple types of water heater sound but all of them have different reasons. If you are experiencing this situation at your home for the first time then you need to figure out what exactly the issue is. 

For example, if you hear a popping or cracking voice from your water heater means there is too much build-up collected at the bottom of your tank. When the heater starts warming up the air bubble gets trapped in the bottom and makes a noise. On the other hand, if we talk about the humming sound of the water heater then it means there are some elements which are loose in the heater and creating noise. 

There is one more noise which is a whistle kind of noise. If you hear any whistle noise from your water heater then it is because of the disturbed water flow. 

Is A Noisy Water Heater Dangerous?

Many of us have questions: is a noisy water heater dangerous? Well, you will be relaxed to know that not all the time. The seriousness of the issue depends on the frequency of noise and other things. But, it is also something that you should not ignore for sure. 

As we talked about above, the sound of the water heater indicates many things like loose parts, water pressure issues, build-up at the bottom of the tank, and more. If you hear any of the noise from your water heater then it is clear that it needs maintenance. 

If you do not pay enough attention to the noise of your water heater then it can put you in danger. It can give you costly repairs, and huge damage to your plumbing system. Before winter starts make sure you check your water heater even if it is not making noise. So, you can avoid any kind of inconvenience. 

Why Is My Water Making Noise? Know Reasons 

Now, you have a basic idea of why your water heater makes humming noise or any other. Well, to give you a better idea we have mentioned below all the reasons why my water heater is making noise. 

  • Pipes Are Loose

Loose pipes are one of the main and common reasons for water heater sound. Mostly loose pipes make a sound while the water heater is in use. Due to the water flow the pipes vibrate and create noise. So, make sure you fix the loose pipes. 

  • Water Hammer 

Water hammer is another common reason for the water heater noise. Whenever the water flow suddenly changes in the water heater it makes a noise. This situation can happen due to valves as well. If the valves are closed then water will change direction and it will make noise. 

  • Leakage 

Leakage is also one of the reasons for water heater noise. If there is any kind of leakage in your pipe then it will create noise in the water heater. If you find any leakage in your plumbing system or near the water heater then fix it first. 

  • Deposit Build-Up 

Deposit build-up can also create noise from the water heater. Due to the build-up, the air bubble gets trapped in the tank which makes noise. Clear out all the build-up on your own or with the plumbers help to avoid noise. 

  • High Water Pressure 

Water pressure should be proper in the pipes. If the water pressure is not right then it will make a noise from the water heater. Check the water pressure and valves to avoid noise from the water heater. 

Conclusion 

In conclusion, we have talked all about the reasons behind the water heater making noise. This is a very small thing for every homeowner but it should be solved on time. Go through the above-given reasons for water heater noise to get a better idea. You can solve it easily if you understand the right issue.

Call Us for Water Heater Repair & Maintenance 

Now, you are aware of the seriousness of water heater noise and the reasons behind it. To solve and understand it deeply you need proper knowledge and time. If you are not into plumbing and repairing then rely on us. Call TrustFlow for any kind of plumbing services. 

Related Posts

How To Get Rid Of Calcium Deposits On Faucet?

How To Get Rid Of Calcium Deposits On Faucet?

Many homeowners face calcium deposits on faucet issue. It’s basically a white residue, also called a limescale, built upon your faucet. Albeit, the good news is that these scaly deposits are not harmful to you. But still you want to remove the deposits to make your...

read more
How To Insulate Water Pipes At Home?

How To Insulate Water Pipes At Home?

When Canadians face the winter season, they get worried about their pipes. We all know that pipes in winter get so extremely cold that it doesn’t move the water supply. For that reason, you don’t get a smooth water flow and feel helpless when you are in the shower...

read more

Book A Plumber
Under 2 mins!

9 + 11 =