Wondering what to do about that noise your water heater is making? Any type of noise coming from your water heater should not be left unchecked. In general, water heaters should function quietly and without fail.

If your water heater is making any of the following noises, call a pro immediately.

  • If you hear a boiling sound when you stand next to the water heater, the internal temperature may be too high. First, set the tank’s thermostat lower, and wait several minutes for the water temperature to cool a bit. If the boiling noise continues, get expert help.
  • A thumping or popping noise coming from inside the tank may be the result of a significant amount of sediment buildup. When there’s buildup, steam bubbles can become trapped under the sediment. The bubbles create the noise when they break through. Thumping or pounding noises result from sediment buildup, as well, causing the flow of water to stop abruptly and creating shock waves that travel through the pipes. To rectify the problem, call a pro to flush out the tank and rid it of sediment.
  • Electric water heaters can make a banging noise, which is generally an indication that the heating element needs to be cleaned. Turn the unit off, and make an appointment for preventive maintenance.
  • Another noise to be concerned about, hissing, is common with gas-operated water heaters, but only when they are running. If the unit isn’t running, and you hear a hissing, shut it down immediately, turn off the gas valve, and contact your utility company or plumbing professional immediately.

Now that you know the noise your water heater is making is not normal, contact Apollo Home Heating, Cooling & Plumbing for expert emergency help. We’ve served homeowners in the Cincinnati area since 1910 with quality plumbing service, maintenance plans and installations. Call us or visit our website for more information.

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