How Do Electric Showers Work? Explained in 2 minutes

neil hughes

Neil Huges

Last Updated: 20/04/2024

Have you ever wondered what makes electric showers so efficient at delivering hot water instantly? 

Unlike traditional water heating systems, which require time to heat a large tank, electric showers provide a different kind of convenience and efficiency. 

But how exactly do they work?

In this article, we'll explore the inner workings of electric showers, how they differ from other shower types, and why they might be the perfect choice for your bathroom. 

From their essential operation to their energy efficiency and consistent water temperature benefits, you'll discover everything you need to make an informed decision about installing an electric shower in your home.

Key Takeaways

  • What is an Electric Shower?: Electric showers heat water instantly using an internal heating element, providing hot water on demand without relying on a stored hot water system. This makes them particularly suitable for homes with limited hot water supply.

  • How Electric Showers Work: Electric showers draw cold water directly from the main supply and heat it as it passes through the unit. This allows immediate hot water delivery at the desired temperature, controlled via thermostatic settings.

  • Energy Efficiency and Cost: Electric showers are energy efficient, as they only heat the water you use. They are generally less costly to operate than traditional water heating systems, which heat and store larger volumes of water.

  • Installation Considerations: Installing an electric shower involves electrical and plumbing skills. Key requirements include suitable wiring and adequate water pressure to ensure proper function and safety.

  • Eco-Friendly Options: Modern electric showers often have eco-friendly features like flow regulators and energy-efficient heating elements that help reduce water usage and heating costs.

  • Maintenance Tips: Regular maintenance of an electric shower can prevent scale buildup and ensure consistent performance. Regularly checking and cleaning the shower head, filter, and heating element is essential.

  • Find out the top rated electric showers in 2024 from Best Electric Showers.

Free PDF: Ultimate Buyer's Guide to Electric Showers

What Exactly Is an Electric Shower?

An electric shower is your go-to solution for an invigorating shower experience anytime. 

It ingeniously heats water directly from the cold mains supply on demand, ensuring you never run out of hot water mid-shower. 

Unlike conventional systems that rely on a pre-heated water reservoir, electric showers offer instantaneous warmth tailored precisely to your preference.

Electric showers are diverse, with variants like power and mixer showers catering to different needs. 

Power showers, for example, combine the convenience of on-demand heating with an integrated pump to boost water pressure, which is ideal for homes with low pressure. 

Mixer showers, on the other hand, blend hot and cold water from your home's system to achieve the desired temperature, though they lack the on-the-spot heating feature of their electric counterparts.

What truly sets electric showers apart is their self-sufficiency. 

They don't hinge on the hot water system of your home, making them a versatile option for any bathroom. 

Whether upgrading your bathroom, dealing with limited space, or simply seeking a more efficient way to shower, an electric shower is a remarkable choice that promises functionality and simplicity.

How Electric Showers Function

The magic of an electric shower lies in its ability to provide hot water on demand, a feat that transforms your daily showering routine into an instant, joyous experience. 

But how does this remarkable piece of technology achieve such a task? 

Let's dive into the inner workings of electric showers and unravel the process that brings warm, comforting water to your fingertips the moment you desire it.

The Journey from Cold to Comfort

At its heart, electric showers operate on a simple yet efficient principle: heating cold water as it passes through the unit. 

When you turn on an electric shower, cold water from your home's main supply is drawn into the unit. 

This water then flows across a heating element, similar in function to the elements found in electric kettles but optimised for a rapid and continuous flow of water.

Heating Element – The Core of Warmth

The heating element is the cornerstone of an electric shower. Made from durable materials that conduct heat efficiently, the element quickly heats up as electrical current passes through it. 

As cold water envelops this element, it absorbs heat, transitioning from cold to your desired temperature in mere moments.

Thermostatic Control for Perfect Temperatures

Electric showers have thermostatic controls to ensure the water temperature is just right. 

These intelligent systems adjust the electricity flow to the heating element based on your selected water temperature setting. 

Whether you prefer a warm, soothing shower or a hot, steamy escape, the shower consistently maintains your chosen temperature, even if water pressure or supply temperature fluctuates.

A Symphony of Components Working Together

Several other components play vital roles besides the heating element and thermostatic control. 

Flow sensors ensure water runs at a consistent rate, while safety mechanisms prevent overheating, making your electric shower not just efficient but safe.

An electric shower is a marvel of modern engineering that epitomises convenience and efficiency. 

Instantly heating water on demand ensures you’re never left waiting or wanting for that perfect shower experience.

Electric Showers vs. The Rest: A Practical Comparison

Understanding how electric showers compare to other types is crucial when deciding on the best shower system for your home. 

Let’s delve into the key differences between electric showers and their counterparts, namely mixers and power showers, to help you make an informed choice.

Electric Shower vs. Mixer Showers

Electric showers heat water directly from the cold water supply on the fly, making them independent of your home's hot water system. 

This independence is a boon, especially in households with scarce hot water or when multiple people need showers back-to-back. 

In contrast, mixer showers merge hot and cold water from your home's system to reach your desired temperature. 

While mixer showers depend on pre-heated water availability, electric showers deliver consistent hot water without waiting.

The Flow Rate Factor

One notable difference lies in the flow rate. 

Electric showers offer a slightly lower flow rate than mixer showers due to the heating process as water passes through the unit. 

However, modern electric showers are designed to minimise this difference, ensuring a satisfying shower experience.

Electric Shower vs. Power Showers

Power showers are similar to electric showers with an added boost—they include a built-in pump to amplify water pressure, which is ideal for homes with low pressure. 

While electric showers excel in heating efficiency, power showers offer the dual advantage of pressure and temperature control. 

However, this comes at a cost; power showers typically consume more energy due to the integrated pump, making electric showers a more energy-efficient option for those mindful of their consumption and bills.

Energy Efficiency and Installation

Energy efficiency is another critical aspect. Electric showers only heat water, leading to significant energy savings over time. 

Mixers and power showers draw hot water from your home's system, which might not match this efficiency level. 

Additionally, the simplicity of installing an electric shower without needing access to hot and cold water supplies makes them a versatile option for many homes.

Tailoring to Your Needs:

Choosing between an electric, mixer, or power shower comes down to assessing your household’s needs—the desire for an instantaneous hot shower, maximising water pressure, or balancing energy efficiency. 

Each type has unique benefits, and understanding these distinctions ensures you select a shower system that best suits your preferences and lifestyle.

Step-by-Step Guide to Installing an Electric Shower

Embarking on installing an electric shower marries convenience with a dash of technical know-how. 

This step-by-step guide illuminates integrating this modern marvel into your bathroom, ensuring you have the necessary tools and knowledge for a smooth installation process.

Pre-Installation Checklist

Before diving into the installation, gathering the right tools for the job is crucial. 

Commonly, you'll need a drill, screwdrivers, an adjustable wrench, a spirit level, and electrical pliers. 

Additionally, ensuring your home's electrical system can accommodate the electric shower's power requirements is paramount. 

Typically, this involves confirming the circuit can handle the shower's kilowatt rating and is protected by a suitable circuit breaker.

Step 1: Choosing the Right Location

Identify the optimal spot in your bathroom for the shower. 

This includes considering access to the cold water mains supply and ensuring a direct route for the electrical wiring from your fuse box to the shower unit. 

The chosen location should also provide sufficient space for the unit and allow easy use and maintenance.

Step 2: Connecting to the Cold Water Supply

The backbone of an electric shower's functionality is its direct line to your cold water mains. 

Connecting the unit to the mains involves routing a dedicated pipe to where the shower will be installed. 

Precision is vital to avoid leaks and ensure a steady water flow.

Step 3: Electrical Wiring

Safety and adherence to local building codes are paramount when wiring your electric shower. 

This task typically requires a qualified electrician. It involves running a dedicated power line from your fuse box to the shower and ensuring it's suitably rated for its power demands. 

A residual current device (RCD) is essential to safeguard against potential electrical faults.

Step 4: Mounting the Shower Unit

With the preparatory work complete, the next step is securely mounting the shower unit on the wall. 

Using a spirit level to ensure it's perfectly vertical, drill holes for the mounting screws, affix the unit, and then connect the previously installed water supply pipe.

Step 5: Final Connections and Testing

Make the final connections to the water supply and electrical wiring with the unit in place. 

Before sealing everything up, testing the shower for leaks and ensuring all electrical connections are secure is critical. 

Once verified, you're ready to enjoy the convenience and efficiency of your new electric shower.

Necessary Precautions:

  • Always consult and adhere to local building regulations and codes.

  • A professional electrician should handle electrical connections.

  • Ensure the shower unit and its components are compatible with your home's water pressure and electrical system.

Installation of an electric shower marries functionality with foresight, transforming your bathroom into a sanctuary of convenience and relaxation. 

With the right tools, preparation, and professional support for electrical aspects, you can usher in a new era of showering comfort and efficiency.

Why Kilowatt Ratings Matter for Electric Showers

Embarking on the selection of an electric shower, one factor stands paramount: the kilowatt (kW) power rating. 

This metric isn't just a number—it's the heart of your shower's performance, influencing everything from water temperature to energy bill. 

Let’s unravel the significance of kilowatt power rating and guide you through choosing the optimal power for your needs.

Understanding Kilowatt Power Rating

The kilowatt power rating of an electric shower denotes its energy consumption and directly impacts its ability to heat water efficiently. 

A higher rating, typically from 7.5kW to 10.8kW and beyond, means the shower can heat more water to a higher temperature faster. 

This capability, however, comes with the caveat of increased electrical demand, necessitating a robust home electrical system to support it.

Choosing the Right Kilowatt Power

Selecting the correct kilowatt power for your electric shower hinges on balancing your desired shower experience with the practical limitations of your home’s electrical infrastructure. 

Here are key considerations:

  • For Gentle Warmth: Lower kW units (around 7.5kW) are economical and suited for households with limited electrical capacity. They provide a warm shower with a moderate flow rate, ideal for energy-conscious users in regions with milder climates.

  • For Steaming Bliss: Those craving hotter showers with a more robust flow should lean towards higher kW ratings (9.5kW to 10.8kW and above). Perfect for cooler climates or anyone after a more invigorating shower experience, these models deliver on demand but require a compatible electrical setup.

The Importance of a Suitable Kilowatt Rating

A carefully chosen kilowatt rating ensures your shower operates efficiently without overburdening your home's electrical system. 

This balance affects not just the immediate pleasure of your daily shower but also long-term considerations like energy costs and system durability. 

An overly powerful shower for a modest electrical system can lead to tripped circuits and potential safety hazards, while an underpowered shower might leave you longing for more warmth.

Energy Consumption Considerations

The kilowatt rating also plays a critical role in your shower's energy consumption. Higher-rated showers, while providing luxurious warmth, will invariably consume more electricity. 

This consumption translates to higher utility bills, making it essential to weigh the benefits of a more powerful shower against its ongoing operational costs.

In conclusion, the kilowatt power rating of an electric shower is a fundamental factor that determines the shower's efficiency, performance, and cost-effectiveness. 

By understanding your household's electrical capabilities and personal preferences, you can select a shower that meets your expectations for warmth and comfort and aligns with your energy efficiency goals.

Maximising Efficiency: The Energy-Smart Electric Shower

Delving into electric showers, one must pay attention to the pivotal aspect of energy efficiency. 

This characteristic aligns with the modern push towards sustainability and directly influences the cost-effectiveness of your daily rituals. 

Here, we explore the energy efficiency of electric showers, comparing their consumption with traditional baths to illuminate their benefits regarding environmental impact and household expenses.

The Efficiency Edge

Electric showers stand out for their on-demand heating capability, meaning they only expend energy when activated. 

This targeted use of power contrasts sharply with traditional hot water systems, which maintain a constant supply of heated water, often resulting in wasted energy. 

Electric showers eliminate the standby energy losses associated with hot water tanks, showcasing their inherent efficiency by heating water instantaneously at the point of use.

Kilowatt Power Rating’s Role

The energy efficiency of an electric shower is intrinsically linked to its kilowatt power rating. 

Higher ratings demand more energy while delivering hotter water at a faster rate. Conversely, showers with lower kilowatt ratings consume less power but may offer a less forceful water flow. 

The key to maximising energy efficiency lies in selecting a kilowatt rating that aligns with your household's needs and the capacity of your electrical system, balancing performance with sustainability.

Comparative Consumption: Electric Showers vs. Baths

Electric showers typically emerge as the more energy-efficient choice compared to taking baths. 

Filling a bathtub requires a substantial volume of hot water, which can consume considerable energy depending on your water heating system. 

Electric showers can significantly reduce water and energy consumption by only heating the water you use during your shower. 

The exact savings will vary based on individual habits, but shifting from baths to showers is generally recognised as a step towards reducing your environmental footprint and lowering utility bills.

The Eco-Friendly Perspective

Beyond the essential efficiency benefits, many electric showers now incorporate eco-friendly features to further reduce water and energy use. 

These may include water flow regulators and low-flow showerheads that maintain a satisfying shower experience while minimising waste. 

Such innovations enhance the energy efficiency of electric showers and contribute to a more sustainable lifestyle.

Tailoring Energy Use to Your Needs:

Ultimately, an electric shower's energy efficiency offers a dual advantage: It supports environmental conservation efforts and promotes household cost savings. 

By choosing an electric shower with a suitable kilowatt rating and eco-conscious features, homeowners can enjoy the comfort and convenience of instant hot showers without undue burden on the planet or their finances.

Going Green with Your Shower: Eco-Friendly Options

In the contemporary quest for more sustainable living, eco-friendly options in every aspect of our homes have become paramount. 

The realm of electric showers is no exception, with advancements aimed at reducing water usage and energy consumption without compromising the quality of your shower experience. 

Let’s explore the eco-friendly innovations in electric showers and how they contribute to a greener, more sustainable lifestyle.

Innovative Eco-Friendly Shower Heads

A pivotal step towards eco-friendliness in electric showers is the integration of eco-friendly shower heads. 

These innovative attachments limit water flow while ensuring the shower feels just as fulfilling and luxurious. 

By incorporating advanced aeration techniques, they mix water with air, delivering a spray that feels voluminous without the excess water use. 

This conserves water and reduces the energy required to heat it, doubling the environmental benefits.

Water-Saving Features

Modern electric showers are increasingly equipped with built-in features aimed at conserving water.

From intelligent flow regulators that adjust water usage in real-time to thermostatic controls that maintain water temperature without constant adjustments, these features ensure that every drop is used efficiently.

These showers help households significantly reduce their water footprint by optimising water flow and temperature.

The Effectiveness of Pulsating Shower Heads

Pulsating shower heads offer another eco-friendly option. 

By delivering water in pulses rather than a continuous stream, they use less water overall while providing a massaging effect that many find enhances the showering experience. 

This innovative approach allows for water savings without the user feeling the reduction in water flow, striking a balance between conservation and comfort.

Benefits of Going Eco-Friendly

The adoption of eco-friendly electric showers brings with it a host of benefits:

  • Reduced Water and Energy Consumption: These eco-friendly options significantly lower household utility bills by minimising the amount of water and energy used per shower.

  • Environmental Impact: Reduced consumption translates into a smaller carbon footprint, contributing to global efforts against climate change.

  • Enhanced Shower Experience: Innovative technologies ensure that conservation efforts do not compromise the quality of your shower, maintaining high standards of comfort and efficiency.

Eco-friendly electric showers represent a harmonious blend of environmental responsibility and technological innovation. 

By choosing these greener options, homeowners can enjoy the daily luxury of a refreshing shower while actively contributing to water and energy conservation. 

As we continue to seek sustainable solutions in every corner of our lives, the evolution of eco-friendly showers is a testament to our capacity for impactful change.

Keeping Your Electric Shower in Top Shape: Maintenance and Safety

Regular Maintenance Tips

  1. Descaling the Shower Head: Limescale can accumulate on the shower head in areas with hard water, blocking the water jets and reducing efficiency. Regularly cleaning the shower head with a descaling solution or vinegar can prevent build-up and maintain a strong, even water flow.

  2. Checking for Leaks: Inspect the connections and fittings for any signs of leakage. Early detection and repair of leaks can prevent water damage and potential mould growth in your bathroom.

  3. Cleaning the Filter: Electric showers often have inlet filters that catch debris and prevent it from entering the heating element. Clean this filter every few months to ensure optimal water flow and protect the internal components of your shower.

  4. Inspecting the Heating Element: Although this often requires professional assistance, checking the heating element for scale build-up or damage can help maintain the efficiency of your shower and extend its lifespan.

Safety Precautions

  1. Electrical Safety Checks: Ensure your electric shower is installed with a residual current device (RCD) to protect against electrical faults. Regularly test the RCD to confirm it's functioning correctly.

  2. Professional Installation and Repairs: Always use a qualified electrician for the installation and any repairs involving the electrical components of your shower. Improper handling of electrical wiring can lead to severe hazards.

  3. Avoid DIY on Internal Components: While basic maintenance like cleaning and descaling can be done personally, professionals should carry out internal repairs or replacements. This ensures that all components are handled correctly and maintain any manufacturer warranties.

  4. Regular Performance Checks: Periodically check your shower's temperature stability and response time. Any irregularities indicate underlying issues that require professional attention.

  5. Use Manufacturer Recommended Parts: If replacements are needed, use parts recommended by the manufacturer to ensure compatibility and avoid damaging your unit.

© Copyright 2024 Best Electric Shower LTD. All rights reserved. | Company Number: 15606794 | Registered in England and Wales with registered office in Linden Fields, Tunbridge Wells, England, TN2 5QX

Email Support: | Customer Support: 02081752283  

Privacy Policy | Cookie Policy | Terms of UseAffiliate Policy

© Copyright 2024 Best Electric Shower LTD All rights reserved | Company Number: 15606794 | Registered in England and Wales with registered office in Linden Fields, Tunbridge Wells, England, TN2 5QX

Email Support: | Customer Support: 02081752283  

Privacy Policy | Cookie Policy | Terms of UseAffiliate Policy

© Copyright 2024 Best Electric Shower LTD All rights reserved | Company Number: 15606794 | Registered in England and Wales with registered office in Linden Fields, Tunbridge Wells, England, TN2 5QX

Email Support: | Customer Support: 02081752283  

Privacy Policy | Cookie Policy | Terms of UseAffiliate Policy


Free Guide: Ultimate Buyer's Guide to Electric Showers