Charlotte Plumber Advice: Why is My Water Heater Making Noises?

Charlotte water heaters

Charlotte Water Heater Making Noise?

When you start hearing your water heater making noises, you may get worried. This is a well-founded fear because an old damaged heater that is starting to make noises can be dangerous. On the other hand, it could be a perfectly harmless issue. So let’s talk about what could be causing those bumps.


If your heater is over 10 years old, has not been drained in the last year, or is working with water that has a high mineral content, these are the first indicators that the noises you’re hearing might be a problem.

The mineral content can contribute to scale buildup, which will in turn cause your heater to overheat. This can easily be fixed with water softeners or whole house filtration systems. Buildup can also come from other sediments in the tank, again causing overheating.

Overheating of a water heater can lead to fires, explosions and even death. If you hear noises, you should get your heater checked out by a professional immediately in order to keep your home safe.


On the opposite end of the spectrum, a water heater naturally makes noises from expansion and contraction due to temperature changes. When cold water enters the tank, there’s a certain amount that the tank can handle before it starts to make noises. If there’s too much water going in at once, it can get loud. If that’s the case, you can just adjust the amount of water headed into the tank.

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Charlotte water heaters, Water Heater Making Noises

Not getting enough hot water? Water heater making noises?

Article Summary

Quick question & answer: Why does my water heater make noises when it is cold outside?

Your water heater may be making noises when it’s cold outside because water heaters naturally make noises from contraction and expansion due to temperature changes. When cold water enters the tank, there’s a certain amount it can handle before it starts making sounds. If too much water goes in at once, it will get loud.

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