Why Your Water Heater Is Making Noise (And How to Fix It)

Why Is My Water Heater Making Noise?

Ever noticed your water heater making strange noises? It could be popping, hissing, or even beeping. While it might seem harmless, these sounds are often signs that something’s wrong—and they shouldn't be ignored. Let's break down why your water heater is talking to you and what to do about it.

Common Water Heater Noises and What They Mean

1. Popping or Rumbling
This usually means sediment buildup. Hard water minerals settle at the bottom of the tank, trapping water beneath. When it heats, the water pushes through the sediment and creates a popping noise.

2. Hissing or Sizzling
This sound might mean a leak. If water drips onto the heating element, it creates a hissing noise—an urgent signal to check for leaks.

3. Beeping (Electric Water Heaters)
Beeping indicates electrical issues like a failing thermostat, heating element, or control board. These should be addressed quickly to prevent breakdowns.

4. Humming
This happens when the electric heating element vibrates. While not usually dangerous, it can be fixed by tightening the element.

5. Water Hammer
That loud bang when water stops suddenly? That’s water hammer. It’s not from the heater itself, but it signals high water pressure or loose pipes.

Repair or Replace Your Water Heater?

If your heater is over 10 years old or needs frequent repairs, replacement may be more cost-effective. Watch for rusty water, low hot water output, or rising energy bills—these are red flags.

Call SEBPOL LLC Today

Strange heater noises? Don’t wait for it to fail. SEBPOL LLC provides water heater maintenance, repairs, and replacements to keep your hot water flowing safely.