Water Heater Nightmare! Why It Keeps Running and How to Stop It

If you’ve noticed an incessant hum or constant flow of hot water from your water heater, you’re likely wondering why it keeps running nonstop. This issue can be a major inconvenience, leading to higher energy bills and potential water damage. In this comprehensive guide, we’ll explore the common reasons why your water heater keeps running and provide step-by-step solutions to resolve the problem.

1. Faulty Thermostat

The thermostat regulates the water temperature in your water heater. A malfunctioning thermostat can cause the unit to overheat and continue running in an attempt to maintain the desired temperature. Check the thermostat setting and replace it if it’s faulty.

2. Sediment Buildup

Over time, sediment from the incoming water can accumulate at the bottom of the water heater tank. This sediment insulates the heating element, making it work harder to heat the water. As a result, the water heater may run continuously to compensate for the reduced efficiency. Flushing the water heater tank can remove the sediment buildup.

3. Worn-out Heating Element

The heating element is responsible for heating the water in the tank. If the heating element is worn out or damaged, it may not be able to heat the water efficiently, causing the water heater to run constantly. Replacing the heating element can resolve this issue.

4. Oversized Water Heater

An oversized water heater can also lead to excessive running. If the water heater is too large for your household’s needs, it will heat the water too quickly and then turn off. As soon as the water cools slightly, the water heater will turn back on, resulting in a continuous cycle. Consider replacing the oversized water heater with a smaller model.

5. Leaking Pressure Relief Valve

The pressure relief valve is designed to release excess pressure from the water heater. A leaking pressure relief valve can cause the water heater to run constantly as it tries to maintain the correct water pressure. Replacing the leaking pressure relief valve can stop the water heater from running continuously.

6. Faulty Dip Tube

The dip tube directs the cold water entering the water heater to the bottom of the tank. If the dip tube is damaged or disconnected, the cold water will mix with the hot water at the top of the tank, causing the water heater to run continuously to maintain the desired temperature. Replacing or repairing the dip tube can resolve this issue.

7. Incorrect Gas Pressure (Gas Water Heaters)

If you have a gas water heater, incorrect gas pressure can cause it to run continuously. Check the gas pressure regulator and adjust it according to the manufacturer’s specifications. If the gas pressure is too high or too low, it can affect the efficiency of the water heater and lead to excessive running.

Troubleshooting Tips

• Check the thermostat: Adjust the thermostat to the desired temperature and ensure it’s working properly.
• Flush the water heater: Drain the water from the tank and flush it with a garden hose to remove sediment buildup.
• Inspect the heating element: Look for signs of damage or wear on the heating element. If necessary, replace it.
• Check the gas pressure (gas water heaters): Use a gas pressure gauge to measure the gas pressure at the burner. Adjust it to the correct level according to the manufacturer’s instructions.

When to Call a Professional

If you’ve tried the troubleshooting tips above and the water heater is still running continuously, it’s best to call a licensed plumber. They can diagnose the problem accurately and perform the necessary repairs or replacements.

Conclusion: Resolving the Issue and Preventing Future Problems

Identifying and resolving the underlying cause of why your water heater keeps running is crucial for restoring its proper operation and avoiding further issues. By following the steps outlined in this guide, you can troubleshoot the problem and implement effective solutions. Regular maintenance and proper usage can help prevent future problems and ensure the longevity of your water heater.

FAQ

Q: Why does my water heater run for hours at a time?
A: A faulty thermostat, sediment buildup, a worn-out heating element, or an oversized water heater can cause the water heater to run for extended periods.

Q: How can I stop my water heater from running all the time?
A: Check the thermostat, flush the water heater tank, inspect the heating element, and adjust the gas pressure (if applicable). If these steps don‘t resolve the issue, call a plumber.

Q: What are the signs of a faulty pressure relief valve?
A: A leaking pressure relief valve may produce a constant dripping sound or cause water to leak from the top of the water heater.