Is your water heater making noise? Whether it’s rumbling, popping, or hissing, unusual sounds are often a sign that something isn’t right. Luckily, there are solutions for most of these issues.

In this article, we’ll explore the common causes of strange noises in water heaters, quick fixes you can try, and permanent solutions from Son-Rise Plumbing & Gasfitting in Calgary.

Our Calgary water heater experts will do their best to emulate sounds through text. If you have a noise you don’t see here, give us a call and we will figure it out together.

Common Water Heater Noises

Rumbling or Popping Sounds

One of the most common noises you’ll hear from a hot water tank is a rumbling or popping sound. This is typically caused by sediment buildup at the bottom of the water heater tank.

As Calgary has hard water, minerals from the water can accumulate in your water heater over time. These minerals form a layer of sediment buildup that creates restricted water flow. When the water heats up, it causes the buildup to shift and pop, creating that rumbling sound. It can also cause your water to be way too hot.

If your hot water tank is making rumbling or popping noises, it’s a sign that sediment buildup is affecting the water heater’s performance.

It may also reduce the efficiency of gas or electric water heaters, leading to inconsistent heating or higher energy bills.

Hissing or Sizzling Sounds

Hissing or sizzling sounds usually indicate a water leak. When water drips onto a hot surface—like the heating element in your water heater—it can make a hissing noise. This often happens if the heating element is partially submerged in water due to sediment build-up or if the water heater is leaking.

These noises could also be a sign that the water heater is overheating or that the pressure inside the tank is too high.

In some cases, the temperature and pressure (T&P) relief valve may be leaking, which can also produce a hissing sound.

‘For Now’ Fixes for Strange Noises in Your Hot Water Tank

If your hot water tank is making strange noises, there are a few steps you can take while you wait for a professional plumber. These quick fixes may help minimize the problem temporarily.

Flush the Water Heater

Rumbling and popping noises caused by sediment buildup can often be addressed by flushing the water heater. Draining the water helps to remove the sediment at the bottom of your water heater’s tank, which can improve heating performance and reduce loud noise.

To flush your water heater, attach a garden hose to the tank’s drain valve. Run the hose to a drain or outside, and open the valve to let the water drain out. Be careful when draining the tank, as the water can be very hot.

Warning: If you’re unsure about how to safely flush your tank, it’s best to wait for a professional to handle it. Draining the water heater incorrectly can cause damage or injury. We recommend letting a professional maintain your hot water tank.

Check the Pressure

If you hear hissing noises, check the pressure inside the water heater. The pressure relief valve may be opening to release excess pressure, which is causing the sound.

If you notice that the valve is leaking or the pressure is too high, it’s important to lower the temperature setting on your thermostat. This can reduce the pressure inside the water heater and prevent further damage.

If the hissing continues, you should contact a plumber as soon as possible. High pressure can be dangerous and may cause the water heater to fail if not addressed.

Permanent Solutions for Strange Noises in Your Hot Water Tank

If the noises persist, it’s time to consider a permanent solution. Son-Rise Plumbing offers a range of services to fix strange noises in your hot water tank and restore its normal operation.

Flush the Tank (Professional Service)

If sediment buildup is causing the noise, our team can flush the water heater to remove the minerals. This will improve the tank’s efficiency and stop the rumbling or popping sounds.

We’ll also inspect the water heater to ensure it’s working properly and recommend regular maintenance to prevent future sediment buildup.

Replace the Heating Element

If hissing noises are caused by a faulty heating element, it may need to be replaced. When the element is partially submerged in water due to sediment, it can overheat and make a sizzling sound.

Son-Rise Plumbing can inspect the element and replace it if necessary.

A new heating element will help your tank heat water more efficiently and quietly.

Fix or Replace the Temperature & Pressure (T&P) Relief Valve

If the T&P valve is leaking or malfunctioning, it can cause hissing noises. The valve is a crucial safety feature that releases pressure if the water heater overheats.

If the valve is faulty or if there’s too much pressure in the water heater, it needs to be repaired or replaced. Our team can test the valve, fix any issues, or replace it to keep your water heater running safely.

It Might Be Time: Water Heater Replacement

In some cases, strange noises can be a sign that your hot water tank is nearing the end of its life. If the water heater is old, corroded, or has had multiple issues, replacing it may be the best solution.

Newer tank and tankless water heaters are more energy-efficient, quieter, and more reliable. Son-Rise Plumbing can help you choose the right water heater for your home and install it safely.

Get Help Selecting a New Tank

Why Choose Son-Rise Plumbing for Hot Water Tank Repairs in Calgary?

At Son-Rise Plumbing & Gasfitting, we’ve been helping Calgary homeowners with hot water tank repairs for over 30 years. Whether your water heater is making strange noises or experiencing other issues, we have the experience and knowledge to get it fixed.

Here’s what you’ll get:

• Expert Repairs: Our team is skilled in diagnosing and fixing water heaters. Whether it’s a simple flush or a full replacement, we’ll get the job done right.
• Quick Response: Strange noises in your hot water tank can’t wait. We offer same-day service to ensure your tank is fixed quickly.
• Local Knowledge: We understand Calgary’s unique plumbing challenges, from hard water to freezing winters. Our solutions are designed for your home’s specific needs.
• A Fantastic Experience: We take pride in our work. Our customers consistently rate us as one of Calgary’s top plumbing companies for our reliable service and friendly approach.

Call Son-Rise Plumbing Today for Hot Water Tank Repairs

If your hot water tank is making strange noises, don’t wait. Contact Son-Rise Plumbing & Gasfitting today. Our expert team will inspect your water heater, explain your options, and provide the right solution to fix the problem.

We’re here to help you restore peace and quiet to your home—and keep your hot water running smoothly.

Give Us a Call