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How to Know When a Water Heater Is About to Go Out

Virtually all American homes have some kind of water heater device, and this is in large part because humans have become quite reliant on hot water; it’s used for bathing, dish cleaning, hand washing, laundry, and many other purposes, and many critical functions of everyday home life could not be carried out easily without hot water. This is why many homeowners pay attention to how their water heaters are performing—they don’t want to be caught off guard and without hot water for an extended period of time. Plus, reliable water heater repair isn’t always easy to find!

Many homeowners preempt water heater malfunctions by maintaining their systems regularly, that way they never have to experience undesirable circumstances like cold showers or cold dish-washing water. But knowing when a water heater is about to malfunction is not always easy to spot. In fact, sometimes professional assistance is required to handle hard-to-detect problems. There are, however, several key signs which indicate when a system is about to fail, and these signs can be discerned even by people who don’t possess a thorough knowledge of how a water heater works.

If you want to know the observable signs which indicate when a water heater is about to malfunction, read on!


You’re Turning Hot-Water Dials and Handles Further Than Usual

Showers and sinks utilize different mechanisms to gauge water temperature, but in most cases, these mechanisms are easy to understand. Most American showers use a dial system to control water temperature, and typically there are two settings: hot and cold. Most showers don’t require you to turn the dial far into the “hot” region to receive a comfortable amount of hot water, so if you’re finding this is not the case with your shower, there may be a problem with your water heater.

If you’re trying to gauge how much hot water you have access to, run a bathroom or kitchen sink for a few minutes. If the water is cool or lukewarm after several minutes running, it’s best to check out your water heater. Your system may be producing hot water but not distributing it to the necessary locations. 

Cloudy Water

The next time you wash your dishes, do a load of laundry or take a shower, check to see if the water you’re using is cloudy. Also, check for a metallic scent in the air. If you drink the tap water, try to see if you can taste metal. Cloudy water and metallic tastes and smells are commonly associated with a water heater that’s on the fritz. This is what’s happening: the water heater is releasing mineral deposits, and these deposits are clouding up the hot water that flows from your taps. Problems with mineral deposits should be addressed immediately, for these can impact faucets and water-flow control.

If you notice murky orange or red tinges in your water, this may be because the water heater, or the pipes connected to it, are rusty. Rusty pipes should be monitored closely, and professional assistance should definitely be sought if rust is penetrating into the water you shower, wash, and clean with.

The Pilot Light Keeps Going Out

Homeowners that rely on gas water heaters prefer these systems for many reasons. One downside to gas water heaters, however, is that some of them rely on pilot lights to function. A pilot light is a small gas burner, one that’s kept on continuously so a larger burner can be lit when requested. On some gas water heaters, particularly the old ones, the pilot light switches are very sensitive. If you’re someone who keeps your water heater in a crowded space, you may experience pilot light failures quite frequently, possibly because things—whether they be boxes, laundry baskets, etc.—keep bumping into the pilot light sensor and knocking it out.

There may also be a problem with the water heater’s thermocouple, the thermoelectric device used for measuring temperature. Most homeowners cannot diagnose problems related to the thermocouple on their own, and therefore they often require help from professionals.

You Smell Gas Around the Water Heater

If you ever find yourself smelling gas around your water heater, the first step is to close the valve supplying the system with gas—this step is critically important. Once the odor has subsided, you can begin to diagnose the problem. If there’s a problem with the pilot light, the result may be an emission of a gas smell. Any gas-related problems should be approached with extreme care and caution. If you suspect there’s a problem with how your water heater is receiving or utilizing gas, you may want to err on the side of caution and hire a professional to figure out what’s causing the smell of gas to be emitted from your system.

You Notice an Increase in Your Energy Bills

If a problem that’s unseen to the naked eye is affecting your water heater, your monthly energy bills will reflect this. There are instances where a water heater may seem fine but in actuality its wasting a ton of energy due to a malfunction.
If you’re trying to identify abnormal energy costs, implement the following strategies around the house:

  • Don’t run water while scrubbing dishes.
  • When washing your hair, only use water to wet and rinse.
  • Do laundry only when your wardrobe is seriously depleted.

If you conserve water, and hot water by extension and your energy costs are still high, it’s quite likely your water heater is experiencing an unobservable malfunction. Gas heaters are more prone to such malfunctions than electric heaters, and such is one of the many reasons why many homeowners prefer electric water heaters over gas heaters.


Your System Is Making Strange Noises

If there are rumblings or popping sounds emanating from your water heater, a failure may be on the horizon. Hard water and mineral buildup have also been known to cause unpleasant noises. If you’re hearing what sounds like popping, it’s likely there are minerals on the surface of your water heater; these minerals collect and form a thick layer. If you want to rid your system of mineral buildup, flush it from the tank. Be advised, there’s probably a larger problem that needs to be addressed. Don’t wait until the system fails and a costly leak wreaks havoc—replace your water heater or have it inspected by professionals if strange noises are emanating from it.

Where to Go for Reliable Water Heater Repair

Are you concerned that your water heater is about to fail? Is your home or business dependent on its access to hot water? Nobody should be without hot water, and this is something we here at Team Enoch believe deeply. Don’t wait until it’s too late! We can come to your home or business and check out your system. Our experts are highly experienced, licensed, certified, and personable, and they’ll be able to tell you what’s wrong with your system, how it can be fixed, how much repairs will cost, and how malfunctions can be prevented in the future. Make sure you always have access to hot water with help from Team Enoch!

Want to know more about Water Heaters? We have written the following articles on this subject:





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Team Enoch provides electrical, plumbing, roofing and HVAC services to residential and commercial customers in DFW with an emphasis on value (service price, quality).

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1 Comment

  1. Eli Mcmullen

    Thanks for mentioning that your water heater may be making odd sounds if hard water and minerals are beginning to accumulate within the system. When I was showering after work last night, I noticed that the water heater started making popping sounds as soon as I turned on my shower, and I am worried that taking a shower this winter will be uncomfortable if I lose access to hot water. Maybe I should look for a repair service that can help me ensure that my water heater is operational.


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