A water heater is essential for every home, so it’s not surprising that problems with them are relatively common. But with so many different types of water heaters available, and so many ways that they can fail, everyone should have a basic understanding of what problems to look for so they can recognize when something needs attention. It’s important to understand how your specific water heater functions so you can determine when something is wrong. There are a number of problems that can impact the performance of your water heater including leaks, scaling, high pressure build-up, frost build-up, corrosion and more. In order to help you understand what these problems mean and how to avoid them, we’ve compiled this comprehensive guide to common water heater issues so you can learn what to look for and how to fix them if they arise.

Leaking

This is one of the most common problems with water heaters and can be caused by a variety of issues. Water generally expands as it warms, and that expansion can lead to leaks. If your water heater is not large enough to accommodate all of the water demand in your home, the warmer water will start leaking. This can happen if you have a smaller tank, or if you have a combination of a smaller hot water tank and a smaller water storage tank. You can also experience leaks if you have an older, less efficient tank. If you’re experiencing any leaking issues with your water heater, it is important to address them as soon as possible.

Frost Build-up

Frost build-up occurs when the cooling coils inside the water heater are not adequately cooled. This can be caused by low water flow, as the water in the tank will not be able to cool the cooling coils as quickly as it normally would. There are a couple of ways to fix this, but the first step is to ensure that the water flow coming into the water heater is adequate. The amount of water flow coming into the water heater is referred to as the flow rate, and it is important that this is adequate in order to prevent frost build-up. If you have low water flow, there are a number of ways to increase it without having to replace your water heater. If frost build-up continues, it may be time to replace your water heater.

Scaling

Scaling is an issue that can occur with a number of water heater types, although it is more common with certain types. If you have a salt-water system, you may experience scaling, and the exact reasons will vary based on the type of water system in your home. If you have a well or another salt-water system, you should have a professional come in and inspect the system to make sure it is not scaling. If you have a hybrid system, or if you have a water system that is mixed, you may experience scaling. The best way to avoid scaling is to keep the water in your system clean. There are a number of ways to do this, including changing the filter every six months, and using a cleaning product to clean the inside of the pipes. If you continue to experience scaling, it is time to replace your water heater.

Corrosion

Corrosion is another problem that can occur with a variety of water heater types. If you live in a humid environment, you are more likely to experience higher levels of corrosion, especially if your water is very hard. If you have a combination of high humidity and hard water, you may want to consider installing a water softening system. Many people use salt-water systems, so they also have to deal with scaling issues, so it is important to keep your water clean and soft. You can do this by installing an RO system or by changing out the filters on your salt-water system. If you are experiencing corrosion, it is time to replace your water heater.

Water Temperature Problems

Water temperature issues are another common problem with water heaters. If you have an older water heater, you may experience water that is too hot, or water that is too cold. This can be an issue if you have an older system that is not capable of maintaining the correct water temperature, or if it is set too low. If you have a new system, it is important to test your water temperature to make sure it is at the correct setting. If you have an older system, it is important to keep an eye on the temperature and make adjustments as needed.

Conclusion

Water heaters are an essential part of every home, but they do have a number of potential problems. It is important to understand what these problems are so you can recognize them when they arise. There are a number of things you can do to avoid problems with your water heater, and some of them are fairly simple to address. It is important to keep an eye on your water heater, and to address any problems as soon as possible, as there are a number of issues that can quickly become more serious.

Frequently Asked Question

While you technically can install a hot water heater yourself as a homeowner, the likelihood that this is a good or safe idea is very slim. Trust the professionals with your hot water heater installation to make sure it's done correctly. You wouldn't want to cause yourself or your family any harm.
The higher cost is a result of a more labor-intensive set-up, as new gas and water lines are required for installation. For a new tankless water heater, new electric wiring will need to be installed.
Turn off all water supplies in the house. Turn on all the hot water faucets in the house in order to drain what is left in the existing hot water heater. Then, disconnect the water line that connects the water heater to the rest of the house. There is often a connection on a hose that you can simply unscrew.
These heaters can be fueled by electricity, gas, or liquid propane and installed in many areas of your home. The national average cost to replace a 50-gallon water heater is $1,100 to $2,800, with most people paying around $1,800 for a direct replacement of a 50-gallon gas hot water heater using the same model.
  • Your older water heater is getting up there in age
  • It's making strange noises
  • You're getting rusty water out of the tap
  • Your hot water doesn't last as long as it used to
  • There are water puddles around the unit
120 degrees Fahrenheit is the safety recommendation against scalding, but 140° is the common default setting. Most experts agree that anything below 120 degrees creates a risk for bacteria to develop inside your water heater from stagnant water, such as legionella that causes Legionnaire's disease.
Turn up the thermostat on the hot water heater. One of the easiest ways to make a hot shower last longer is by using less hot water while it's at a higher temperature. To do this, turn up the temperature on the thermostat that's attached to the hot water heater tank. (Not the thermostat on the wall.)
Sediment buildup shortens the life of your water heater and adds to your energy bill by reducing its efficiency. Draining two or three gallons of water is usually enough to flush out sediments, but always let the water flow until you no longer see particles in the bucket. Regular water heater maintenance will always extend its lifespan.
  • You're overusing hot water.
  • The water heater tank size is too small for your household.
  • Your hot water heater is tankless.
  • Sediment or minerals have built up in your water heating system.
Soft water can actually corrode the water heater anode faster. When the anode wears down, the corrosive elements will move on to the tank. So if left alone, a water softener system can actually shorten the lifespan of a water heater.