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Electric water heater not working? here’s the shocking reason you need to know

Rob is a seasoned home improvement writer with over 15 years of experience researching and recommending products for the home. Prior to starting Nurturing Homeaid, he wrote extensively for This Old House magazine and has been featured as a home expert on several TV and radio programs. An avid DIY-er,...

What To Know

  • When faced with a cold shower or a sink full of lukewarm water, the question “why is my electric water heater not working” becomes an urgent one.
  • If the circuit breaker has tripped or a fuse has blown, reset the breaker or replace the fuse and see if the water heater starts working.
  • To remove sediment buildup, flush the water heater by connecting a hose to the drain valve and opening the valve until the water runs clear.

Electric water heaters, the unsung heroes of our showering and dishwashing routines, can sometimes fall victim to mysterious malfunctions. When faced with a cold shower or a sink full of lukewarm water, the question “why is my electric water heater not working” becomes an urgent one. This comprehensive guide will delve into the potential causes and provide practical solutions to restore your water heater to its former glory.

Common Causes of Electric Water Heater Failure

1. Tripped Circuit Breaker or Blown Fuse: Check your electrical panel to see if the circuit breaker controlling the water heater has tripped or if a fuse has blown.

2. Faulty Heating Element: The heating element is responsible for heating the water. If it fails, the water will not heat up.

3. Broken Thermostat: The thermostat controls the temperature of the water. If it breaks, the water may not heat up or may overheat.

4. Leaking Tank: A leaking tank can cause the water heater to lose water and pressure, which can lead to overheating and failure.

5. Sediment Buildup: Over time, sediment can accumulate at the bottom of the tank, reducing the efficiency of the heating element and potentially causing leaks.

6. Faulty Pressure Relief Valve: The pressure relief valve is designed to release excess pressure in the tank. If it fails, it can cause the tank to rupture.

7. Old Age: Electric water heaters typically have a lifespan of 8-12 years. If your water heater is nearing or exceeding this age, it may be time for a replacement.

Troubleshooting Steps

1. Reset the Circuit Breaker or Replace the Fuse: If the circuit breaker has tripped or a fuse has blown, reset the breaker or replace the fuse and see if the water heater starts working.

2. Test the Heating Element: You can test the heating element with a multimeter. If the element is not getting power or is not heating up, it needs to be replaced.

3. Replace the Thermostat: Replacing a broken thermostat is a relatively simple process. Simply remove the old thermostat and install the new one according to the manufacturer’s instructions.

4. Check for Leaks: Inspect the water heater for any signs of leaks. If you find a leak, you may need to replace the tank or a component.

5. Flush the Sediment: To remove sediment buildup, flush the water heater by connecting a hose to the drain valve and opening the valve until the water runs clear.

6. Replace the Pressure Relief Valve: If the pressure relief valve is leaking or not functioning properly, it needs to be replaced.

7. Consider Replacement: If your water heater is old or has suffered multiple failures, it may be more cost-effective to replace it with a new one.

The Ultimate Solution: Prevention

To avoid future water heater problems, consider the following preventative measures:

  • Install a water softener to reduce sediment buildup.
  • Flush the water heater annually to remove sediment.
  • Inspect the pressure relief valve regularly and replace it if necessary.
  • Consider using a water heater blanket to reduce heat loss.
  • Schedule regular maintenance with a qualified technician.

Information You Need to Know

Q: What is the average lifespan of an electric water heater?
A: 8-12 years

Q: Can I replace the heating element myself?
A: Yes, but it is recommended to consult a qualified electrician if you are not comfortable working with electrical components.

Q: How often should I flush my water heater?
A: Annually

Q: What are the signs of a leaking water heater tank?
A: Water stains, rust, or a damp smell around the water heater.

Q: Can I use a multimeter to test the thermostat?
A: Yes, you can use a multimeter to test the continuity of the thermostat.

Q: How do I know if I need to replace my water heater?
A: If your water heater is old, leaking, or has suffered multiple failures, it may be time for a replacement.

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Rob Sanders

Rob is a seasoned home improvement writer with over 15 years of experience researching and recommending products for the home. Prior to starting Nurturing Homeaid, he wrote extensively for This Old House magazine and has been featured as a home expert on several TV and radio programs. An avid DIY-er, Rob takes pride in testing out the latest tools and gadgets to see how they can make home projects easier. When it comes to heating systems, he's evaluated over 50 different furnace and boiler models over the years. Rob founded Nurturing Homeaid with his business partner Jim in 2020 to provide homeowners with genuine product recommendations they can trust. In his free time, Rob enjoys remodeling old homes with his family and traveling to visit architectural landmarks across the country. He holds a bachelor's degree in Journalism from Syracuse University.
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