What to Do About Water Heater Rumbling

What’s that rumbling noise from the water heater?

Water heaters aren’t designed to make loud noises beyond the gentle hum of regular operation. If you’re hearing more than that, then it’s a clear signal that you need to investigate.

A rumbling noise from your water heater can be unsettling, but it’s often an early warning that something is wrong. But what’s causing this rumbling in the first place?

The most common culprit is sediment buildup at the bottom of the tank. Minerals and debris from your water supply accumulate over time and form a layer of sediment inside the tank. When the water inside heats up, it causes this sediment to shift and move around – ultimately leading to that distinct rumbling sound.

Why rumbling noise from the water heater is a problem.

While a little sediment may not seem like a big deal, allowing it to accumulate can cause several problems for your water heater:

• Reduced Efficiency: Sediment buildup creates a barrier between the burner and the water inside the tank. This forces the water heater to use more energy to heat your water.
• Increased Wear and Tear: Working overtime means more strain. This can shorten the lifespan of the unit, leading to costly repairs or even premature water heater replacement.
• Overheating: Sediment can trap heat inside the tank and overheat the unit. In extreme cases, this can result in damage to the tank or safety hazards.

Fixing a rumbling water heater

The good news is that the solution is relatively simple in most cases. Here’s what you can do:

• Flush the Tank: The first step is to flush your water heater tank. Turn off the water heater, shut off the water supply, drain the tank, and then refill it.
• Check the Pressure Relief Valve: To safeguard against your water heater from overheating or building up too much pressure, make sure to test the pressure relief valve regularly. If it’s not functioning properly, then arrange a water heater repair ASAP.
• Water Softener: A water softener removes excess minerals and sediment from the water supply, preventing them from accumulating in the tank in the first place.

When to call a professional

While flushing your water heater can be a DIY project, there are times when it’s best request professional plumbing service. If the rumbling noise persists after flushing the tank or if you’re unsure about how to handle certain parts of the process, it’s always a good idea to call a licensed plumber.

Moreover, if your tank-style water heater is over 10 years old, then it might be time for a replacement. If you’re considering a tankless water heater installation, then call Mr. Rooter to consult with a trained member of our team. We’re happy to help you choose the perfect water heater for your home or business.