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Wednesday, June 12, 2024

The Best Electric Water Heaters in the UK: A Detailed Review

For homeowners in the United Kingdom, the decision to switch to an electric water heater is often the first step towards greater energy efficiency and the potential for significant savings. This article is not just about highlighting the best new water heaters on the market; it’s a comprehensive guide for all your electric heater needs, from understanding what to look for to the best installation practices. Whether you’re environmentally conscious, a DIY enthusiast, or just keen to keep your home up-to-date with cutting-edge technology, read on to discover the top electric water heaters available in the UK in 2024.

Topic: Best Electric water heater

What to Consider When Buying an Electric Water Heater

Purchasing an electric water heater is an investment that you want to get right the first time. Here are some key factors to consider before making a purchase.

Tank or Tankless Water Heater?

The first and most significant decision you’ll face when buying an electric water heater is whether to opt for a tank or tankless system. Tank water heaters store a specific quantity of water which is kept hot at all times, available for immediate use. Tankless water heaters, on the other hand, heat water only when you turn on the faucet. This can save a significant amount of energy, but they are often more expensive to purchase and install.

Energy Efficiency

The next big concern is energy efficiency. For electric water heaters, this can be measured by their energy factor (EF), which tells you how efficiently they convert electricity into hot water. The higher the EF, the more efficient the water heater is.

Size and Capacity

Another vital aspect is the size and capacity of the water heater. You’ll need to consider factors like the size of your property, the number of bathrooms, and the number of potential users to determine the right size for you. An undersized unit will continuously battle to keep up with demands, while an oversized unit can lead to wasted energy heating water you won’t use.

Installation and Maintenance

Ease of installation and future maintenance are two practical concerns you should factor into your decision. Tankless water heaters, while they require additional care, might be more space-saving and easier to manage in the long-term, not to mention their longer lifespan.

Topic: Best Electric water heater

Top 5 Best Electric Water Heater in the UK for 2024

To gauge the best electric water heaters in the UK for this year, we’ve considered the factors above, along with user reviews, expert opinions, and the latest industry awards.

1. The EcoSmart ECO 27

EcoSmart ECO 27

Image Source – Google | Image by ecosmart

The EcoSmart ECO 27 stands out as a leading solution in energy-efficient home heating and hot water supply. This electric tankless water heater is designed to provide significant savings on utility bills for homeowners, thanks to its self-modulating technology. Capable of heating nearly 3 gallons of water per minute, it ensures hot water is instantly available, even in colder climates. Its compact size allows for versatile installation options, making it an ideal choice for those looking to save space without compromising on performance.


The EcoSmart ECO 27 is packed with a range of features designed to enhance user convenience and efficiency. Key features include:

  • Self-Modulating Technology: Automatically adjusts energy usage based on how much hot water is needed, ensuring energy efficiency and reduced utility costs.
  • Instantaneous Hot Water: Capable of delivering up to 3 gallons per minute, it ensures that hot water is always available on demand, without the wait.
  • Digital Temperature Control: A user-friendly digital interface allows for precise temperature settings in 1-degree increments, giving users complete control over water temperature.
  • Compact, Sleek Design: Its small footprint and modern design allow for installation in a variety of spaces, including closets and under sinks, making it a perfect fit for any home.
  • Eco-Friendly Operation: By heating water only when it’s needed, the ECO 27 significantly reduces energy consumption and contributes to a smaller carbon footprint.
  • Durability and Reliability: Built to last, it features high-quality materials and components, ensuring long-term reliability and performance.

2. Rheem Hybrid Electric Water Heater 

Rheem Hybrid Electric Water Heater 

Image Source – Google | Image by Rheem

The Rheem Hybrid Electric Water Heater represents a significant advancement in water heating technology, combining efficiency with environmental sustainability. This innovative appliance utilizes heat pump technology to absorb warmth from the surrounding air, transferring it to heat water, which drastically reduces electricity consumption. As a result, homeowners can enjoy substantial savings on their energy bills while minimizing their carbon footprint. Its smart features, including WiFi connectivity, allow users to effortlessly monitor and control their water heater’s performance and settings from anywhere, providing both convenience and peace of mind.


  • Heat Pump Technology: Utilizes ambient air to heat water, significantly reducing electricity use and operational costs.
  • WiFi Connectivity: Enables remote monitoring and control via a smartphone app, adding convenience and efficiency.
  • Energy Savings: Offers substantial cost savings on energy bills due to its high efficiency, making it an eco-friendly choice for modern homes.
  • Customizable Settings: Features adaptable settings for various needs, including a vacation mode to save energy when the house is empty and a high-demand mode for times of heavy usage.
  • User-Friendly Interface: Designed with an intuitive interface for easy setup and adjustment of settings, ensuring a seamless user experience.
  • Durability and Warranty: Built with high-quality materials for lasting performance, accompanied by a comprehensive warranty for homeowner’s peace of mind.
  • Environmental Impact: Aids in reducing the household carbon footprint, aligning with environmental sustainability goals.

3. Stiebel Eltron 235232 Electric Water Heater

Stiebel Eltron 235232 Electric Water Heater

The Stiebel Eltron 235232 stands out as a pinnacle of water heating technology, embodying efficiency, and reliability. Designed with the environmentally conscious homeowner in mind, this unit not only ensures a reduced carbon footprint but also offers significant energy savings. Its precise engineering is geared towards providing a continuous supply of hot water, making it an ideal choice for residential or commercial settings that demand high performance without compromising on sustainability.


  • Energy Efficiency: Utilizes advanced heat pump technology to deliver hot water by extracting heat from the surrounding air, reducing electricity usage by up to 65% compared to traditional electric water heaters.
  • User-Friendly Interface: Features an intuitive LCD display for easy monitoring and control of temperature settings, ensuring optimal performance and user satisfaction.
  • Reliability: Engineered in Germany, this water heater is built to last, incorporating high-quality materials and rigorous testing to guarantee durability and consistent performance.
  • Quiet Operation: Its sound-optimizing design ensures that the unit operates quietly, making it unobtrusive in any installation environment.
  • Flexible Installation: Can be installed in various settings, including basements, utility rooms, or garages, thanks to its compact size and versatility.
  • Eco-Friendly: By significantly reducing energy consumption, it contributes to lower CO2 emissions, aiding in the global effort to combat climate change.

4. AO Smith E6-40R45DV

AO Smith E6-40R45DV

Image Source – Google | Image by AO Smith

The AO Smith E6-40R45DV represents an innovative solution in the realm of water heating technology. This 40-gallon electric water heater is engineered with efficiency and longevity in mind, offering robust features such as dual heating elements for faster heating and a self-cleaning function to reduce sediment build-up. Its energy-efficient operation not only ensures a consistent supply of hot water but also contributes to lower electricity bills, making it a smart choice for environmentally conscious households.


  • Dual Heating Elements: Equipped with two heating elements, this water heater provides faster and more efficient heating, ensuring a constant supply of hot water even during peak usage times.
  • Self-Cleaning Function: The built-in self-cleaning function helps to significantly reduce the buildup of sediment and minerals inside the tank, prolonging the unit’s lifespan and maintaining its efficiency over time.
  • Energy Efficiency: Designed with energy savings in mind, the E6-40R45DV operates more efficiently than standard models, contributing to lower monthly electricity bills and reduced environmental impact.
  • Large Capacity: With a 40-gallon tank, this model is well-suited for medium to large households, providing ample hot water for showering, laundry, dishes, and more without the wait.
  • Durable Build: Constructed with high-quality materials, the E6-40R45DV is designed to withstand the test of time, resisting corrosion and wear for reliable long-term performance.
  • Easy Installation and Maintenance: The unit’s design simplifies installation and maintenance, making it a user-friendly option for homeowners and professionals alike.
  • Enhanced Safety Features: Safety is a priority with features like temperature and pressure relief valves to prevent overheating and overpressure conditions, ensuring peace of mind for users.

5. Bosch Tronic 3000 T Electric Water Heater

Bosch Tronic 3000T Electric Water Heater

Image Source – Google | Image by BOSCH

The Bosch Tronic 3000 T Electric Water Heater marks a significant advancement in water heating technology. Compact and easy to install, this unit is designed for versatility, fitting neatly under sinks or in tight spaces where conventional water heaters cannot. It efficiently delivers instant hot water, minimizing waste and reducing energy consumption, making it an ideal solution for both residential and commercial settings. Its robust build quality and reliable performance ensure long-term satisfaction and comfort, embodying Bosch’s commitment to excellence in home appliances.


  • Compact Design: Perfect for under-sink installations, the small size of the Bosch Tronic 3000 T allows it to fit in spaces where traditional heaters cannot.
  • Instant Hot Water: This unit provides immediate hot water, reducing wait times and promoting efficiency.
  • Energy Savings: Engineered to minimize energy consumption, it helps lower utility bills by reducing the need to heat and reheat water.
  • Durability: Constructed with high-quality materials, this water heater is built to last, ensuring reliability and performance longevity.
  • Easy Installation: With its straightforward setup process, the Tronic 3000 T can be installed quickly and easily, without requiring extensive plumbing modifications.
  • Temperature Control: Users can precisely adjust the water temperature to their preference, ensuring optimal comfort and safety.
  • Versatile Use: Suited for both residential and commercial applications, it can serve as a primary water heater for small usage requirements or a supplementary unit for specific hot water needs.

Topic: Best Electric water heater

Installation and Upkeep

Buying the right water heater is only half the battle. Proper installation and regular maintenance are crucial for optimal performance and safety. For inexperienced individuals, it’s recommended to hire a certified plumber to install a new electric water heater. It typically involves electrical wiring and proper water line connections, all of which require expert precision.

Once installed, regular upkeep will ensure your water heater runs efficiently. This can include flushing the tank to remove sediment, checking the pressure valve, and inspecting the anode rod (if applicable) for wear. Always refer to the manufacturer’s guidelines for recommended maintenance schedules and practices.

Topic: Best Electric water heater

Understanding Your Energy Consumption

Electric water heaters can be one of the largest energy consumers in a home. Understanding and managing this consumption are vital for house efficiency.

Peak and Off-Peak Usage

Many UK consumers have access to off-peak electricity rates, which can make up for higher-than-average consumption of electricity. If your household has such a tariff, time your water heater to take advantage of the off-peak times, and consider a larger tank to store this heated water.

Smart and Programmable Features

Smart water heaters can learn your consumption patterns and adjust accordingly. This, combined with programmable features, can significantly reduce your energy usage by avoiding heating water at times when you don’t need it.

Incentives and Rebates

The UK government, along with various energy companies, often provides incentives for installing energy-efficient appliances, including water heaters. It’s worth to check for any tax credits, rebates, or grants available in your area, which can make high-efficiency water heaters more accessible.

Topic: Best Electric water heater


The best electric water heaters in the UK for 2024 offer a myriad of options aimed at reducing energy consumption. It’s important to research and select a water heater that not only meets your household’s needs but also aligns with your energy-saving goals. Remember that the initial cost is just one part of the equation – factor in installation, maintenance, and energy use over the long term to make the most informed decision possible. Whether it’s a tankless model for a small flat or a high-capacity electric heater for a family home, the right choice can lead to years of efficiency and savings.

Investing in a new electric water heater is investing in the future of your home. With thoughtful consideration and smart shopping, you can find the perfect water heater to keep your life comfortable and your energy bills manageable. Here’s to a green and cost-effective 2024!

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