Electric Hot Water Heater Maintenance

Nov 8, 2023


Welcome to Best Service Plumber, your trusted provider for all your home service needs. As experts in plumbing and water heater installation/repair, we understand the importance of maintaining your electric hot water heater. In this comprehensive guide, we will share valuable insights on the maintenance of electric hot water heaters to ensure their optimal performance and longevity.

Why is Electric Hot Water Heater Maintenance Important?

Maintaining your electric hot water heater is crucial to avoid potential issues and increase its lifespan. Regular maintenance not only ensures uninterrupted hot water supply but also helps prevent costly repairs or premature replacements.

1. Inspecting the Pressure Relief Valve

The pressure relief valve is a crucial component of the electric hot water heater system. Regularly inspect the valve for any signs of leaks or malfunctions. To test the valve, follow these steps:

  1. Turn off the power to the heater
  2. Locate the pressure relief valve
  3. Slowly lift and release the valve handle
  4. Listen for any sounds of water escaping or releasing
  5. If the valve fails the test, it may need to be replaced

2. Flushing the Tank

Over time, sediment and minerals can build up in the tank, reducing its efficiency. Flushing the tank annually helps remove these deposits and improves the overall performance of your electric hot water heater. Follow these steps to flush the tank:

  • Turn off the power supply to the heater
  • Attach a hose to the drain valve located at the bottom of the tank
  • Place the other end of the hose in a suitable drainage area
  • Open the drain valve and allow the water to flow out
  • Once the water runs clear, close the drain valve and remove the hose

3. Checking the Anode Rod

The anode rod plays a vital role in preventing corrosion within the tank. Over time, the rod can deteriorate and need replacement. Here's how to check the anode rod:

  1. Turn off the power supply to the heater
  2. Locate the anode rod on top of the tank
  3. Use a socket wrench to loosen and remove the rod
  4. Inspect the anode rod for signs of heavy corrosion or deterioration
  5. If necessary, replace the anode rod with a new one

4. Testing the Heating Elements

Heating elements are responsible for heating the water in your electric hot water heater. Regularly testing them can identify any issues before they become major problems. Here's how to test the heating elements:

  • Turn off the power supply to the heater
  • Remove the access panels on the side of the heater
  • Use a multimeter to test the heating elements for continuity
  • If a reading shows no continuity, the heating element may need replacement

5. Insulation and Temperature Control

Proper insulation helps reduce heat loss, improving the energy efficiency of your electric hot water heater. Check the insulation around the tank and ensure it is intact and not damaged. Additionally, verify that the temperature control settings are suitable for your household's needs.


Maintaining your electric hot water heater is essential to ensure its optimal performance and longevity. By following the above maintenance tips, you can prevent potential issues, extend the lifespan of your heater, and enjoy a constant supply of hot water in your home. Trust Best Service Plumber for all your plumbing and water heater installation/repair needs. We are here to provide you with exceptional service and expertise for a seamless and satisfying experience.