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What Those Weird Water Heater Noises Mean

You probably don’t think about your water heater much—unless it starts making a racket from behind the utility closet door. If you hear this appliance calling out for attention, don’t ignore it. Diagnose the noisy water heater and have it repaired to restore normal operation.

Why is my water heater making a noise? A fair question many homeowners ask! Here’s a quick guide to water heater sounds you may be hearing and what they mean:

Popping, Cracking, or Clanking

If you hear any of these noises while your gas- or oil-fired water heater is operating, mineral deposits may have accumulated at the bottom of the tank. What causes this accumulation?

 

  • Mineral deposits build up naturally as calcium and magnesium carbonate precipitate out of the heated water.
  • Over the years, lack of maintenance can lead to a thick layer of mineral buildup.

This accumulation can block heat transfer and lower water heater efficiency. Mineral deposits can even shorten the lifespan of your unit. Fortunately, the tank clues you in on its need for maintenance by making popping, cracking, or clanking sounds.

Hissing

Electric water heaters are less common these days, but if your tank is powered by electricity, you might hear a hissing sound when the heating electrodes turn on. This also indicates mineral buildup inside the water heater.

Banging or Booming at Start-Up

Before you read any further, turn off your gas- or oil-fired water heater and call a professional for repair services if you hear the tank making a loud bang or boom at start-up. This sound could indicate a dangerous situation where gas or oil is reigniting when the burner starts. The chance of a gas or oil burner puffback explosion puts your family and home at risk.

In less dangerous situations, the banging or booming sound may simply mean your water heater is experiencing higher-than-normal thermal expansion. When this is the cause, you’re most likely to hear a bang or boom when the water is reheating after you used up all the hot water or after the water heater has been turned off for a while. It may require the addition of an expansion tank to make the noise go away.

Water Heater Repair in Central Jersey

The bottom line is if you hear weird water heater noises, it’s best to turn it off and have it looked at by a professional before running hot water again. From improving efficiency to preventing an explosion, having your noisy water heater serviced is sure to benefit you! To schedule water heater repair in your New Jersey home, contact Arctic Air Conditioning today.

Testimonials
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”Friday, September 20th, 2019, had our new heating and air conditioner unit installed by Arctic Air. From the sales person Tom to the installers, Eugene and Audrey, were absolutely fantastic!!!!…”

- Maureen Geller
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”I used their website to contact them on Sunday about my a/c acting up. I heard from them first thing Monday morning. The tech was at my house that day…”

- Ron Ralph
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”Can't say enough about these guys. Have used them on multiple occasions, and they always deliver. The guys are always friendly, and respectful of the house. Right on time. Great…”

- James Krail
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”Good professional, and efficient service. Knowledgeable technician and service is affordable. I highly recommend them.”

- Steve Weiss
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”The technicians Eugene and Andrey were excellent. True professionals from start to finish. I'm very happy with the impeccable job they did replacing my entire HVAC system and water heater.…”

- Michael Ostatkiewicz
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”I just purchased the house that Arctic Air Conditioning just serviced. I have had many other companies service systems in my other homes and have NEVER had a more thorough…”

- Bill Cash
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”Very satisfied with efficient service. Kevin was very professional. Thank you.”

- Anna Cassarino-Provinciali
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”They are fast, efficient, and price is reasonable. Techs show up on time and repairs are done fast.”

- Diana Rios
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”For 30 years Arctic Air has serviced my home. Never a problem. They have the nicest service people and very knowledgeable staff. No matter who recommends another service, I’ll always…”

- Diane Karasik Rubin
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”Great service and ontime .”

- John Cushley
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”The workers were extremely pleasant. Job was done well and they cleaned up when they were done.”

- Ellen Frost
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”Mike was was a great technician. He was very pleasant and able to educate me about my heater. I was very guarded at first since my previous encounter with another…”

- Dennis Ladiana
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”When an HVAC company shows up at your house, after you receive and email and text with picture (and their background), they walk up with booties in hand and put…”

- Darek Hahn
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”Our technician Eric arrived on time and went over the maintenance check with me. I would highly recommend Arctic Air to anyone who is looking for someone to do an…”

- Christine Hedin
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”Wonderful company to work with came on time explain everything to me gave me quit right there and then set up appointment for next day should up on time next…”

- Paul Chapman
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”Artic Air 5 stars not only did they do a wonderful job at my place of business Greatway Carpet & Flooring in Manalapan . They just finished my home did…”

- Albert Maya
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”Referred by a neighbor. Excellent customer service from the first call. Text message to say they are en route with photo of service person, ETA, and background.Quality work, communication, professional…”

- Benita Mark
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”As always, Artic Air was on time and the technician was courteous. The work was completed as quoted. Would highly recommend Artic Air.”

- Tara Tarrant Gunthner
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”Excellent and prompt service ...technician was a gentleman and extremely knowledgeable...”

- Joseph Guida
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”My unit was cooling but it felt wet in my house and the coils needed to be cleaned in order to diagnose the issue so I decided to replace it…”

- Arlene Fallon
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