Posted on Feb. 17th, 2025

Water heaters are one of those household appliances that we often take for granted—until something goes wrong. From long, hot showers to running the dishwasher, we rely on our water heaters for comfort and convenience.

But like any other home system, they can start to wear down over time. Knowing the signs that your water heater needs attention can save you from unexpected breakdowns and costly repairs. In this blog post, we’ll go over the warning signs that your water heater might need a check-up and explain why staying on top of maintenance is so important. By the end of this article, you’ll be better equipped to spot potential issues and take the necessary steps to keep your water heater running smoothly.

Unusual Noises Coming From the Tank

If your water heater starts making strange noises, it’s a sign that something is amiss. One of the most common sounds to watch out for is popping or rumbling noises, which could indicate a buildup of sediment inside the tank. Over time, minerals in hard water can accumulate at the bottom of your water heater, causing the water to heat unevenly. This buildup can create pressure, leading to noises and potentially damaging the tank if left untreated. If you hear these sounds, it’s time to get your water heater inspected to prevent further damage and ensure it's heating water properly.

The noises themselves are a signal that the heating elements are working harder than they should. This puts unnecessary strain on the system, leading to inefficiency and potential overheating. Over time, these issues can lead to higher energy bills as your water heater struggles to perform its job. If sediment buildup is the culprit, a professional service can flush the tank to restore the system's efficiency. Regular checks will help prevent these problems from turning into bigger, more expensive repairs down the road.

Discolored or Smelly Water

Another red flag for your water heater is discolored or smelly water. If the water coming from your taps is rusty or has an unpleasant odor, it’s often a sign that your water heater needs attention. Rusty water may indicate corrosion inside the tank or from the pipes leading to it, while foul smells could mean the presence of bacteria, particularly in older water heaters. Bacteria thrive in warm, stagnant water, and can cause unpleasant odors, which might be especially noticeable when you first turn on your hot water. This can be both unsightly and unhygienic, so it’s best to address the issue quickly.

A common cause of discolored water is rust in the tank, often caused by a failing anode rod, which is supposed to prevent corrosion. Over time, the rod can break down and leave the tank exposed to rusting. If you notice any changes in the appearance or smell of your water, don’t wait. Having a professional assess your water heater can identify the cause and recommend the right solution. In many cases, replacing the anode rod or flushing the tank can solve the issue before it becomes a more serious problem.

Inconsistent Water Temperature

Inconsistent water temperature is another clear indicator that your water heater may need a check-up. If you notice the hot water fluctuating between too hot and lukewarm, it’s a sign that the heater isn’t regulating the temperature properly. This could be due to a malfunctioning thermostat, sediment buildup, or faulty heating elements. When the temperature isn’t consistent, it can make for a frustrating shower or delay in getting hot water for cooking and cleaning. It’s also an indication that your water heater is working harder than it should, which can lead to premature wear.

Inconsistent water temperature could also point to an issue with the electrical components in your water heater. If the heating elements are starting to fail, they may not heat the water to the desired temperature or maintain a consistent heat level. Getting your water heater checked by a professional will help diagnose the issue and avoid unnecessary energy waste. Whether it’s a simple thermostat adjustment or a more complex repair, addressing the issue early can help keep your water heater running efficiently and reduce the risk of complete failure.

Water Heater Leaks

Leaks around your water heater are a serious issue that should never be ignored. Even small leaks can quickly lead to larger problems, such as water damage to your floors and walls, or worse, a complete system breakdown. Leaks can occur for various reasons, including corroded pipes, a cracked tank, or issues with the water inlet and outlet connections. If you notice puddles of water near your water heater or see moisture around the tank, it’s time to call a professional. Ignoring leaks can lead to costly repairs and the need for a full water heater replacement.

In some cases, a minor leak may be repairable, but if the tank is severely damaged, it may need to be replaced entirely. The longer a leak is allowed to persist, the more likely it is to cause significant damage to your property. A professional will be able to identify the source of the leak and advise on the best course of action. It’s always better to deal with leaks promptly rather than wait until they cause bigger issues in your home.

Decreased Hot Water Supply

If you’ve noticed that you’re running out of hot water faster than usual, it’s time to investigate your water heater. A decrease in the hot water supply is a common sign that your system is losing efficiency. Over time, the tank’s capacity can become compromised, or there may be an issue with the heating elements. A decrease in the amount of hot water you get could also be due to sediment buildup inside the tank, which reduces the available space for hot water to accumulate. This can cause your heater to work harder than necessary and result in running out of hot water quicker than before.

Another possible cause of a reduced hot water supply is a malfunctioning thermostat, which may cause the water to heat unevenly or not to the desired temperature. This issue can lead to taking longer showers or waiting for hot water to refill the tank. If you notice that you’re not getting as much hot water as you used to, it’s important to get your water heater inspected. A timely inspection can pinpoint the issue, whether it's sediment, a broken thermostat, or another fault, and help restore your hot water supply to normal.

Water Heater Doesn’t Turn On

A water heater that doesn’t turn on is an obvious sign that something is wrong. If you find yourself without hot water altogether, it’s time to check the unit for any electrical or mechanical problems. There could be a tripped circuit breaker, a faulty thermostat, or a problem with the heating elements. If the pilot light is out in a gas water heater, that could also prevent the unit from working. In these cases, it’s important to have a professional inspect the system to ensure it’s repaired correctly.

A failure to turn on could also be due to more complex issues, such as a malfunctioning valve or a buildup of sediment blocking the system's ability to heat the water. Trying to fix this on your own could lead to further damage, so it’s best to leave it to a professional. A thorough inspection and repair can restore your water heater to proper working condition, ensuring that you have access to hot water when you need it most. Don’t wait until the problem worsens—contact a specialist to get your water heater back on track.

Age of Your Water Heater

Finally, the age of your water heater is an important factor to consider when it starts showing signs of trouble. Most traditional water heaters last between 10-15 years, while tankless models can last even longer with proper maintenance. However, as your water heater gets older, the likelihood of issues increases. If your water heater is approaching the end of its expected lifespan, it may be time to consider a replacement before you face a sudden failure. Replacing an old, inefficient water heater can save you money on repairs and energy bills in the long run.

Even if your water heater is still technically functioning, it may not be operating at peak efficiency as it ages. Older units tend to consume more energy and may not provide the same level of heating power as when they were new. If your water heater is over a decade old and showing signs of wear, it’s worth considering an upgrade. A professional inspection can help you decide whether a repair or replacement is the best option for your home and budget.

Your water heater plays a vital role in your home’s daily comfort, so it’s important to stay on top of its maintenance. By recognizing the signs that your water heater needs a check-up, you can prevent costly repairs and unexpected breakdowns. If you've noticed any of these symptoms, it’s a good idea to contact the experts at Year-Round Air Conditioning, Refrigeration, Heating & Plumbing for a thorough inspection. Our team is ready to help you get your water heater back to full working order. Give us a call at (770) 301-7777 today!