Electric combi boilers are becoming favourite in UK homes because of their energy-efficiency and Eco-friendliness features. They provide consistent heating with hot water supply without consuming natural gas, whose price is skyrocketing with international fuel pricing. Many people prefer them to reduce their carbon footprint.
This blog helps you choose the best electric combi boiler for 2025. It explains features, benefits, and popular models. Before getting straight to the point, let’s know why an electric combi boiler is becoming common in the UK.
What is an Electric Combi Boiler?
An electric combi boiler provides heating and hot water. It does not need a separate water tank. These boilers use electricity to heat water instantly. They are compact and fit in small spaces.
Electric combi boilers are perfect for homes without gas connections. They are also safer because they do not burn fuel.
Why Choose an Electric Combi Boiler?
Electric combi boilers are clean and quiet. They do not burn fuels, so no emissions are created. They are perfect for homes without a gas supply. These boilers are small and fit easily in tight spaces. Maintenance is minimal as there are fewer moving parts.
Electric boilers are also safer than gas boilers. There is no possibility of leakage of gases or carbon monoxide poisoning. These benefits make them ideal for modern homes.
Key Features to Look For
- When choosing an electric combi boiler, check the power output. This ensures it meets your home’s heating needs.
- Energy efficiency is another important feature. High efficiency reduces energy bills and saves money.
- Look for boilers with smart controls. These allow you to set timers and adjust temperatures easily.
- Compact size is great for smaller homes or flats.
- Noise level matters too. Quiet models ensure a peaceful home environment.
- Lastly, check the warranty for peace of mind.
Top Electric Combi Boilers in the UK 2025
Several brands offer excellent electric combi boilers. Here are some of the best options available in 2025:
1. ThermEco Elite 24kW
This model is highly efficient and compact. It suits medium-sized homes perfectly. The smart controls make it user-friendly. Its energy efficiency rating is one of the best in the market.
- Pros: Compact, highly efficient, smart controls, long warranty.
- Cons: Higher upfront cost compared to other models.
2. Elektra Compact 12kW
The Elektra Compact is ideal for small homes or flats. It has a sleek design and runs quietly. It also has low running costs, making it budget-friendly.
- Pros: Sleek design, quiet operation, affordable.
- Cons: Limited output for larger homes or higher water demands.
3. EHC Fusion Comet 14.4kW
This boiler is powerful and reliable. It can handle larger homes with ease. It comes with a digital control panel for precise temperature settings.
- Pros: Reliable, powerful, digital controls, good warranty.
- Cons: Larger size may not suit small spaces.
4. Strom 18kW Electric Combi Boiler
The Strom boiler offers high performance and durability. It has smart features and is easy to install. It also has a long warranty period for added security.
- Pros: Durable, high performance, smart features, long warranty.
- Cons: Slightly higher running costs.
5. Heatrae Sadia Electromax
This boiler combines heating and hot water storage. It is great for homes with higher hot water needs. The Electromax is known for its robust build and efficiency.
- Pros: High capacity for heating and hot water, robust design, long warranty.
- Cons: Bulkier and more expensive than other options.
Comparison of Top Electric Combi Boilers
| Boiler Model | Average Price (£) | Installation Cost (£) | Average Running Cost (£/month) | Output Range (kW) | Efficiency (%) | Warranty |
| ThermEco Elite 24kW | 1,800 | 700 | 50 | 24 | 98 | 10 years |
| Elektra Compact 12kW | 1,200 | 600 | 40 | 12 | 96 | 5 years |
| EHC Fusion Comet 14.4kW | 1,500 | 800 | 45 | 14.4 | 97 | 8 years |
| Strom 18kW Electric Combi | 1,900 | 750 | 55 | 18 | 98 | 10 years |
| Heatrae Sadia Electromax | 2,000 | 900 | 60 | 18 | 95 | 12 years |
Electric Shower for Combi Boiler
Electric showers are a good addition to homes with electric combi boilers. They heat water instantly, reducing demand on the boiler. This ensures a steady hot water supply even during high usage.
Electric showers use less energy and result in lower power costs. Additionally, they function well with combi boilers that could have trouble meeting high hot water needs. Choose an electric shower with the right power rating for your home.
Benefits of Electric Combi Boilers
- Electric boilers help reduce energy bills. They are highly efficient, with no energy lost through flue gases.
- These boilers are environmentally friendly, producing zero emissions.
- Installation is simple, and they do not require a chimney or gas pipe.
- Electric boilers are quiet and perfect for indoor use.
- They also have a long lifespan with minimal maintenance.
These features make them a smart choice for any household.
How to Choose the Right Boiler for Your Home?
First, consider the size of your home. Small homes need less power, while larger homes need more. Next, think about your hot water usage. If you use more water, choose a boiler with higher capacity.
Check the energy efficiency rating to save on bills. Look for models with good reviews and customer ratings. Compare warranties to ensure long-term support. Finally, consult a professional to confirm your choice.
Right Size of Electric Combi Boilers
Choosing the correct size ensures your boiler meets your heating needs. The size depends on the number of rooms and radiators in your home. Like, for any number of radiators your property has, just multiply that with 1.5 kW to get the required size or capacity of the combi boiler, which runs on electricity.
| Number of Radiators | Recommended Output (kW) |
| 4 | 6 |
| 6 | 9 |
| 8 | 12 |
| 10 | 15 |
For example, a home with 4 radiators needs a 6 kW boiler. Larger homes with more radiators require higher output. Matching the boiler size prevents energy waste and ensures comfort.
Buying Guide and Recommendations
Key factors to consider:
- Efficiency: Choose a new electric boiler with at least 96% efficiency to save on energy bills.
- Size & Output: Match the boiler’s output with your number of radiators and heating needs.
- Smart Features: Look for programmable thermostats and remote controls to get full temperature control.
- Installation Requirements: Ensure your electric wiring system meet the boiler’s power requirements.
- Warranty and Support: Opt for models with longer warranties and reliable customer service.
Best Boiler for UK Climate
Electric Combi Boiler Installation
Your boiler will operate safely and effectively if it is professionally installed. The price usually falls between £500 to £1,500, depending on how complicated the setup is. The procedure might be made simpler by placing the boiler close to the water mains. After installation, regular servicing will keep the boiler running smoothly for years.
Installation Tips
- Hire a certified electrician for installation. This ensures safety and proper setup.
- Choose a good location for the boiler. It should be accessible for maintenance.
- Verify if the electrical system in your house can provide the boiler with the electricity it requires. When installing, follow carefully to the manufacturer’s instructions.
- After installation, test the boiler to make sure it functions properly.
Maintenance & Care
Your boiler stays in excellent working order with routine maintenance. To provide enough airflow, clean the filters. Look for any damage to the wiring. Maintain a tidy and clutter-free environment around the boiler.
A competent technician should be scheduled for yearly maintenance. Address any issues immediately to avoid bigger problems. Proper care ensures your boiler works efficiently and lasts for years.
Cost of Electric Combi Boilers
Electric combi boilers vary in price. Basic models cost around £800. High-end models can cost up to £2000. Installation costs range from £500 to £1000.
Operating costs depend on electricity rates. Energy-efficient models help reduce running costs. While the upfront cost may be higher, the long-term savings are worth it.
Government Incentives for Electric Boilers
The UK government supports eco-friendly heating solutions. Grants and incentives are available for electric boilers. The ECO4 scheme helps eligible households switch to electric heating.
Check if you qualify for any grants before purchasing. These schemes make electric boilers more affordable.
In a Nutshell
Electric combi boilers are the future of eco-friendly heating, being efficient, safe, and long-lasting. The suitable brand and model choice depends on your home’s size and needs. Popular models like ThermEco Elite and Heatrae Sadia Electromax offer great options.
Proper installation and maintenance ensure long-lasting performance. If you have a gas meter and want to get a free boiler under government subsidies, check them out to save money. A wise purchase for a warmer and greener house is an electric combi boiler.
Frequently Asked Questions
Of course! It is worth it to install an electric combi boiler, which promotes an eco-friendly environment and energy-efficient heating without the need for gas.
Yes, combi boilers also run on electricity provide both heating and hot water supply similar to the one which runs on gas.
Models like the ThermEco Elite 24kW and Strom 18kW have efficiencies of up to 98%.
Yes, electric combi boilers can supply hot water for showers. Pairing with electric showers improves performance.
