Does your water heater sound like it’s about to launch into space? From popping and banging to rumbling and hissing, strange water heater noises are more than just annoying — they could signal serious plumbing issues.
In this post, we’ll explain the most common causes of water heater noises, when to worry, and how Pro Service Mechanical can help get your hot water system running quietly again.
🔊 1. Popping or Banging Sounds
These are usually caused by sediment buildup at the bottom of the tank. As water gets trapped under layers of hardened minerals, it heats up, expands, and bursts through the sediment — causing loud popping or banging sounds.
Flushing the tank regularly can help remove sediment and extend the life of your heater.
🌬️ 2. Hissing or Sizzling Noises
If you hear a hissing or sizzling sound, especially near the heating element, it could indicate moisture coming into contact with hot components. This might be due to a small internal leak or condensation inside the tank.
This is a sign your water heater needs to be inspected for leaks or worn-out parts.
🌀 3. Rumbling or Knocking Noises
Rumbling typically occurs when sediment buildup has gotten so bad that it starts moving around inside the tank. This can reduce efficiency, increase your energy bills, and lead to early tank failure.
If your water heater sounds like a washing machine during spin cycle, it’s time to schedule a flush.
⚠️ 4. Ticking or Tapping Sounds
Some ticking noises are harmless and come from normal expansion and contraction of the pipes as hot water flows. However, constant tapping could indicate loose pipe straps or a malfunctioning heat trap.
A licensed plumber can inspect and correct any abnormal noises coming from the system or the surrounding plumbing.
💥 5. Should You Be Concerned?
While occasional sounds may be normal, persistent or loud noises should never be ignored. They can indicate serious issues like:
- Severe sediment buildup
- Failing heating elements
- Internal corrosion or leaks
- Pressure relief valve issues
Left unchecked, these problems can shorten your unit’s lifespan or even lead to tank failure or flooding.
🛠️ How Pro Service Mechanical Can Help
At Pro Service Mechanical, our Saskatoon plumbing experts specialize in water heater inspections, repairs, and replacements. We’ll diagnose the noise, flush the tank, and ensure your system is working safely and efficiently.
- Complete tank flushing and descaling
- Element testing and replacement
- Leak detection and tank repair
- Water heater installation and upgrades
✅ Final Thoughts
Strange water heater noises are more than a nuisance — they’re a sign that something’s wrong. Don’t wait until you’re out of hot water or dealing with water damage. Let the pros at Pro Service Mechanical take care of it.
Schedule your water heater service today and enjoy quiet, consistent hot water again.
