How to Test an Electric Shower: Simple Steps for UK Homes

electric shower

Welcome to our guide on how to test an electric shower in your UK home. It’s essential to ensure the safety and functionality of your electric shower. Regular testing can help identify potential hazards and resolve any issues before they become more serious. Plus, it ensures your shower is performing at its best, giving you the best showering experience possible. In this article, we will guide you step-by-step through the process of testing your electric shower.

Key Takeaways:

  • Regular testing of your electric shower is essential for safety and optimal performance.
  • Identifying potential hazards and resolving any issues should be a priority.
  • Testing includes checking the power supply, water temperature, pressure and flow, and inspecting for leaks or damage.
  • Regular maintenance and cleaning can prevent blockages and extend the lifespan of your shower unit.
  • If you encounter more complex problems, seek the assistance of a qualified electrician or plumber.

Why Test Your Electric Shower?

Electric showers are a common feature in many UK homes, providing a convenient and reliable source of hot water. However, it is essential to ensure that your electric shower is safe and functional, particularly as water and electricity can be a hazardous combination.

Testing your electric shower regularly can help to identify any issues before they become more serious, reducing the risk of accidents or faults that could result in costly repairs or even replacement.

By ensuring that your electric shower is in good working condition, you can enjoy a comfortable and reliable showering experience without any worry of potential hazards or malfunctions.

Remember, safety comes first when it comes to your electric shower!

Benefits of Testing Your Electric Shower:
Identifying and resolving potential electrical hazards.
Ensuring consistent water temperature and pressure.
Reducing the risk of costly repairs or replacement.
Maintaining optimal performance and extending the lifespan of the shower unit.

Preparing for the Test

Before you can test your electric shower, you need to make sure that you are properly prepared. The following steps will guide you through the process:

  1. Check the power supply: Verify that the electricity is turned off and that there is no power to the shower unit. You can do this by checking the circuit breaker or fuse box. Make sure that you have turned off the main power supply to the shower unit.
  2. Gather necessary tools and equipment: You will need a multimeter and a bucket to prepare for testing your electric shower. Make sure you have these tools on hand before proceeding.

By following these steps, you can ensure that you are properly prepared to test your electric shower. This will help you to identify any potential issues and ensure that your shower unit is safe and functioning optimally.

Testing the Power Supply

Now that you have prepared your electric shower for testing, it’s time to check the power supply. The power supply is an important component of your shower and ensures that the shower unit is receiving the correct voltage and electrical current to function properly.

The first step is to turn off the power supply to your electric shower by switching off the circuit breaker or isolator. Next, you will need a digital multimeter to test the flow of electricity to the shower. Ensure that the multimeter is set to read voltage and continuity.

Before proceeding, it’s important to take proper safety precautions. Avoid touching any metal parts of the electric shower while testing for safety reasons. If necessary, wear rubber gloves or use a wooden stick to check the shower’s power supply.

Locate the shower’s terminal block, which is where the power supply connects to the shower’s electrical wiring. Using the multimeter, touch the meter leads to the terminal block’s live and neutral wires. The meter should read between 220-240 volts, which is the correct voltage for UK homes.

Additionally, check the continuity between the earth wire and the metal casing of the shower unit. The meter should read zero or low resistance, confirming a good electrical connection between the shower and earth.

If the voltage reading is outside the recommended range, it could indicate a problem with the shower’s electrical wiring or the power supply. This could result in the shower not functioning properly or, even worse, pose a safety hazard.

If you encounter any problems during testing, it’s best to contact a qualified electrician to help you troubleshoot the issue. Never attempt to fix electrical faults yourself unless you are trained and qualified to do so.

Testing the power supply is an essential step in ensuring the safe and proper functioning of your electric shower. Take the time to follow these steps carefully to safeguard your home and family.

Checking the Water Temperature

Once you’ve tested the power supply and ensured there are no leaks, it’s time to check the water temperature of your electric shower. Consistent and safe water temperatures are important for a comfortable and enjoyable showering experience.

To test the temperature, turn on the shower and allow it to run for a few minutes to reach its maximum temperature setting. Then, use a thermometer to measure the temperature of the water. Ensure that the temperature is within a safe range of 37-42°C (98.6-107.6°F) to prevent burns or scalds.

If the temperature is too hot or too cold, adjust the shower’s temperature control settings accordingly. Give the shower a few minutes to adjust and retest the temperature until it’s within the safe range.

It’s important to note that initial water temperature may vary depending on the incoming mains water temperature. You can check the water temperature of your shower at regular intervals to ensure it remains within the safe range. If you notice any inconsistency, this could indicate an issue with the shower unit that needs to be addressed.

Testing the Pressure and Flow

Testing the pressure and flow of water from your electric shower is an essential step in ensuring optimal functionality. Using a bucket and stopwatch, follow these simple steps:

  1. Fill a standard 10L bucket with water.
  2. Place the bucket beneath the showerhead.
  3. Turn on the shower to the maximum flow and record the time it takes to fill the bucket.
  4. Compare the time recorded against the manufacturer’s specification for your shower unit. This information can usually be found in the user manual or online.
  5. If the time recorded is significantly longer than the manufacturer’s specification, it may indicate a blockage or other issue within the shower unit.

It is important to note that the pressure and flow may also be affected by the water supply to your home, so checking with your water provider may also be necessary.

Remember to always turn off the shower and wait for it to cool down before testing the pressure and flow. Safety is key!

Inspecting for Leaks or Damage

Inspecting your electric shower for leaks or damage is an essential step in ensuring its safety and functionality. Any signs of damage or leaks may indicate potential hazards or malfunctions that require immediate attention.

Start by examining the showerhead, hose, and unit for any visible signs of damage or cracks. Use your fingers to feel for any gaps or rough areas that may indicate leaks or breaks.

If you notice any issues with the shower, turn off the water supply and begin troubleshooting to identify the source of the problem. It could be as simple as tightening a loose connection or replacing a worn-out part.

Signs of a Leak or Damage What to Do
Water dripping from the showerhead even when the unit is turned off Check and tighten all connections. If the issue persists, consider replacing the showerhead or hose.
Water pooling around the base of the unit Check for loose connections or damaged seals. Tighten connections or replace damaged parts as needed.
Cracks or damage to the shower unit or hose Replace the damaged part immediately to ensure safety and prevent further damage.

Remember to visually inspect your electric shower regularly and be attentive to any changes or signs of damage. Catching and resolving issues early can prevent more serious problems from developing.

Electric shower with water droplets

Regular Maintenance and Cleaning

Regular maintenance and cleaning of your electric shower is essential for optimal performance and longevity. By taking care of your shower unit, you can prevent blockages, prolong its lifespan, and ensure it works efficiently every time you use it. Here are some tips for maintaining your electric shower:

  • Keep the showerhead clean: Over time, a build-up of limescale can occur, leading to reduced water flow and pressure. Remove the showerhead and soak it in a mixture of equal parts water and vinegar for a few hours. Rinse thoroughly and reattach.
  • Check the hoses and fittings: Inspect the hoses and fittings regularly for any signs of damage or wear and tear. Replace any damaged parts immediately to prevent leaks or malfunction.
  • Clean the shower unit regularly: Wipe down the shower unit with a damp cloth every few weeks to prevent the build-up of dirt and grime. Avoid using abrasive cleaners that could scratch or damage the surfaces.
  • Run the shower regularly: Running the shower for a few minutes every day can help prevent blockages and ensure consistent water flow and pressure.
  • Check the shower pressure: Use a pressure gauge to check the shower pressure. Ideal pressure for an electric shower should be between 1 and 2 bar. If the pressure is too low, it could indicate a blockage or fault in the system.
  • Descale the unit: If you live in an area with hard water, descale your shower unit regularly. Use a commercial descaling product or a solution of equal parts water and vinegar to remove limescale build-up in the pipes and heating element.

By following these simple maintenance tips, you can ensure your electric shower is in top condition and avoid costly repairs or replacement. Regular maintenance not only ensures optimal performance but also promotes safety and longevity.

Common Issues and Troubleshooting Tips

Despite regular testing and maintenance, electric showers can still experience functional issues from time to time. In this section, we will cover some of the most common issues with electric showers and provide some troubleshooting tips to help you resolve them.

Low Water Pressure

If you find that your electric shower is not providing enough water pressure, there could be several reasons for this. Firstly, check the water supply to your property to see if there are any issues with the mains supply. If the mains supply is fine, then check the showerhead for any blockages or limescale buildup. Cleaning or replacing the showerhead can help to improve water pressure.

Inconsistent Temperature

If you experience fluctuations in temperature when using your electric shower, there could be a few potential causes. Firstly, check the thermostat to ensure it is set correctly. You may also want to check the heating element to see if it needs to be replaced. If the thermostat and heating element are both functioning correctly, the issue may be with the power supply or wiring. Seek professional assistance to resolve these issues.

Electrical Faults

Electrical faults with electric showers can be hazardous and should be addressed immediately. If you experience any issues with the electrics or circuitry of your electric shower, such as flickering lights or tripping circuit breakers, switch off the power to the shower immediately and seek professional assistance. Attempting to resolve these issues yourself could lead to further problems and pose a safety risk.

  • Regular cleaning and maintenance can help to prevent issues with electric showers.
  • If you experience any issues with your shower, consult the manufacturer’s manual or seek professional assistance.
  • Do not attempt to repair or replace any components of an electric shower unless you are a qualified electrician or plumber.

By following these simple troubleshooting tips and exercising caution, you can resolve many common issues with your electric shower, ensuring it provides consistent and safe performance for years to come.

When to Seek Professional Help

While testing and troubleshooting your electric shower can often resolve minor issues, there may be times when it is necessary to seek professional help. If you experience any of the following problems, it is recommended that you contact a qualified electrician or plumber:

  • The shower unit is making unusual noises or emitting strange smells
  • The water flow rate or pressure remains consistently low, despite testing and adjustments
  • You detect any signs of electrical faults or damage to the unit
  • You are unsure about any aspect of the testing process and require expert guidance

Remember, safety should always be your top priority when dealing with electrical appliances. Seeking professional help can help prevent accidents and ensure that your electric shower is functioning optimally.

Always prioritize safety and seek professional help when necessary


Congratulations, you have successfully tested your electric shower and ensured that it is safe and functional for use in your home. Remember, regular testing and maintenance is key to keeping your electric shower in good working condition. By following the simple steps outlined in this article, you can prevent potential hazards and extend the lifespan of your unit.

Don’t forget to regularly check the power supply, water temperature, pressure and flow, and inspect for any leaks or damage. It’s also important to perform regular maintenance and cleaning to prevent blockages and maintain optimal performance.

If you do encounter any issues with your electric shower, don’t hesitate to seek professional help. It’s always better to be safe than sorry when dealing with electrical appliances.

Keep Your Home Safe and Functional

By understanding how to test and maintain your electric shower, you are taking an important step in ensuring the safety and functionality of your home. Don’t overlook the importance of these simple steps and make them a regular part of your home maintenance routine.

Thank you for reading this article and we hope you found it helpful. Remember to stay safe and take care of your home!


Q: How to test an electric shower?

A: Testing an electric shower is important for safety and functionality. Follow these simple steps to test your electric shower:

Q: Why should you test your electric shower?

A: Testing your electric shower is crucial for ensuring shower electrical safety. Malfunctioning showers can pose hazards and risks, so it’s important to identify and resolve any issues.

Q: How do you prepare for the test?

A: Before testing your electric shower, make sure to check the power supply, turn off the shower, and gather any necessary tools or equipment.

Q: How do you test the power supply?

A: Testing the power supply involves using a multimeter to check voltage and continuity. This ensures that the shower is receiving the correct power.

Q: How do you check the water temperature of an electric shower?

A: To test the water temperature, adjust the temperature control settings and check for consistent and safe water temperatures during operation.

Q: How do you test the pressure and flow of an electric shower?

A: Testing the pressure and flow involves assessing the water flow rate and pressure using a bucket and a stopwatch. This helps ensure that the shower is operating optimally.

Q: How do you inspect an electric shower for leaks or damage?

A: Inspect your electric shower for any leaks or damage by looking for signs such as water stains or cracks. Resolve any issues or seek professional assistance if needed.

Q: How important is regular maintenance and cleaning for electric showers?

A: Regular maintenance and cleaning are essential for electric showers. They help maintain optimal performance, prevent blockages, and extend the lifespan of the shower unit.

Q: What are some common issues and troubleshooting tips for electric showers?

A: Common issues with electric showers include low water pressure, inconsistent temperature, and electrical faults. Follow troubleshooting tips to resolve these problems.

Q: When should you seek professional help for electric shower issues?

A: If you encounter more complex problems or are unsure how to resolve an issue with your electric shower, it’s best to seek the expertise of a qualified electrician or plumber.

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