Hot water heaters are essential appliances in most homes. They heat water for bathing, washing dishes, clothes and other daily activities. However, even with regular maintenance, hot water tanks will eventually require repairs. When your hot water heater breaks down, it can result in inconvenient and costly consequences. If you experience signs such as a continuous flow of cold water when the faucet is turned on or an overflow of water from the faucet, shut off the water supply at the source or simply use a bucket until repairs can be scheduled. Here are some common signs that indicate it’s time for a hot water heater repair:

Water temperature is too low.

When your water is too cold, the first thing you notice is that it takes longer than normal to get hot water from the faucet. The best way to determine if your water is too cold is by checking the water temperature at the tank. If the water temperature is below the manufacturer’s recommended level (usually between 120°F and 126°F), then your water heater is not heating the water to the correct temperature. If this happens frequently, contact a plumber as soon as possible to avoid further damage and make sure the water gets hot again as soon as possible.

Water is coming out at an unpleasant flow rate.

If the flow of water out of the faucet is too fast, you have a blockage in the hot water line. This can be caused by several things such as tree roots growing into the pipes, a kink in the line from being over-tightened or a small animal clogging the line. If this is the case, you will need to call a plumber to repair the line.

There’s an unpleasant, rotten-egg smell.

If you notice a rotten egg smell coming from your hot water tank, you have a serious issue. The most likely cause of this smell is that there is an excess amount of sulfides in the water. To avoid this unpleasant smell, it’s recommended to install a carbon filtration system in the water line. This will trap the excess sulfides and will prevent them from entering your hot water tank.

The water pressure is low.

If the water pressure at the faucet is low, it means that the hot water heater is unable to provide the water pressure required to operate the faucet. There are several reasons why this could be the case. The first is that the hot water pump is not turning on. Another is that the water main feeding the house is too old and will require repairs. If this is the case, you should contact a plumber as soon as possible to avoid further damage.

The water is discolored.

If the water at the faucet is discolored, there’s a high chance that the water heater is leaking. If this is the case, you should contact a plumber as soon as possible to avoid further damage.

You have a continuous flow of water when the faucet is open.

A continuous flow of water when the faucet is open is a sign that there is a break in the pressure relief valve. This is an important safety feature that protects the plumbing from excessive pressure build-up. If this safety feature fails, it can result in a significant amount of water damage to your home. It’s recommended to contact a plumber as soon as possible to repair the safety feature and avoid a larger issue.

By following these tips, you can avoid the cost of having to replace your hot water tank. You can also avoid the inconvenience of having to wait for the repair to be completed.

It’s important to remember that you can’t DIY every aspect of your home. Some appliances are simply too complicated for the average homeowner to repair on their own. That’s why it’s recommended to contact a plumber for hot water tank repairs.

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.
  • 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.
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 hot 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
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.
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.)