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Best Electric Boilers in 2024: Prices & Reviews

Becky Mckay
By: Becky Mckay
Updated: 7th January 2024

best electric boiler

Millions of us have been heating our homes and water with gas for longer than we can remember. Yet, with all this talk of the gas boiler ban, people not connected to the National Grid are on the lookout for the best electric boilers in the UK for their homes.

If you are thinking of switching to an electric boiler, continue reading because we've spoken to our network of registered boiler engineers throughout the UK. These installers are at the home heating coalface and have given us their views on electric boilers and what they think is the best electric boiler on the market.

So, are you ready to take the first step towards your new best electric boiler? If so, you're in luck! Our network of boiler engineers can help you compare up to 3 quotes. This way, you can directly find the most competitive price for an electric boiler without the hassle of spending countless hours doing the research by yourself.

Let us do all the hard work by simply clicking the link below to find free quotes from Gas Safe engineers near you. This service is free and you're under no obligation to accept any of the quotes you receive.

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What is an electric boiler?

An electric boiler is a type of boiler that uses electricity to provide central heating and hot water to your home. It essentially works by passing water through an electric element to heat it. If you’re looking for the best electric boiler, there are several factors to consider such as efficiency, reliability, and cost-effectiveness.

Electric boilers are becoming more popular and can be installed in most small to medium-sized homes to produce enough hot water for central heating and baths and showers. An electric combi boiler is definitely worth thinking about for homes without gas and people looking to lower their carbon footprint.

How do electric combi boilers work?

electric combi boiler

Have you ever wondered how a kettle works? No, me neither, but if you did it would be very similar to how an electric combi boiler works.

In short - an electric combi boiler is a unit that is connected to the main electricity supply and supplied with cold water from the mains, just like a gas combi boiler. When you turn on the hot tap or heating, the heating element inside the boiler heats up and transfers the heat to the cold water. The hot water is then pumped to your tap or radiators.

If you are interested in purchasing the best combi electric boiler, you may want to read some electric combi boiler reviews to help you make a final informed decision.

As water is supplied on demand from a single source, if an electric boiler needs to supply hot water to more than one tap or shower at the same time, the water pressure and/or temperature may drop. This is why combi boilers (gas or electric) are not recommended for larger homes with multiple bathrooms

Types of electric boiler

Just like there are different types of gas boilers, there are also a few different types of electric boilers to choose from and some may be more suitable for your home than others. One of the most popular types of electric boilers is the electric combi boiler. If you are considering the purchase of the best electric boiler, you may want to read electric boiler reviews to help you make a final decision.

Electric combi boiler

An electric combi boiler looks just like a gas combi boiler and is a single unit that provides both hot water and central heating. The electric combi boiler uses its heating element to act as an electric hot water boiler to provide hot water when you want it.

From our experience, a combi is the cheapest and easiest to install because it doesn't need a tank. This also helps save you space around the home. Just be mindful that the lack of water storage means you won’t be able to take advantage of Economy 7 tariffs by heating your water overnight at a cheaper rate. View the range of electric combi boilers on the market in the UK today in our boiler comparison tool.

Storage electric boiler

storage electric boiler

A storage electric boiler is suitable for Economy 7 tariffs which may help you reduce your energy bills. An electric storage boiler is supplied with a hot water tank either within the unit or comes as a separate unit. Storage electric boilers are often more expensive than their direct-acting cousins.

Electric CPSU

electric cpsu

A Combined Primary Storage Unit, or CPSU, stores lots of hot water within the boiler so it can meet demand much quicker and at higher pressure. Unless you fancy a bath 12 times a day, it is unlikely a CPSU will be required in your home. They tend to be quite large and as such are more suited to commercial installations.

Dry Core Storage

dry core storage

Dry Core Storage boilers are similar to storage heaters and are designed to work alongside Economy 7 tariffs for cheaper energy prices at night. They work by heating bricks overnight - the heat is then released into water to be used for central heating and hot water, rather than being circulated directly into your home.

Solar compatible

solar compatible boilerIf you have a storage tank with an immersion heater you can use free energy from solar panels to run your electric boiler.

Electric boilers are not electric storage heaters. While the boiler will use electricity to heat water for your taps and radiators, a storage heater will heat bricks in your home overnight (when energy costs are lower) so you can then use this stored heat throughout the following day.

Advantages of electric boilers

For millions of homes across the UK without access to the gas network they are a viable heating alternative and bring with them several other less talked about benefits. In addition, if you are able to power an electric boiler with renewable energy, you could be reducing your carbon footprint and/or lowering your energy bills.

There is no denying that the price per unit for electricity is higher than gas. But, electric boilers certainly have their advantages and do provide other ways to make some savings. They're cheaper to install than other boilers and you also don't need to have it serviced every year.

Here's a few more benefits of installing an electric boiler.

electric boiler advantages

No gas or oil needed

If you’re not connected to the National Grid and have no access to gas, then an electric boiler is a sensible option. If you don’t have space for an oil tank an electric boiler is also a great alternative as they only need an electricity supply to heat your home.

Highly efficient

With electricity, you get out what you put in. In other words, as electric boilers do not need to burn fuel to produce heat, they don't lose energy through waste gases. This results in an efficiency rating of 99% compared to 89%-95% for most gas boilers. Read more about electric boiler efficiency here.

Lower emissions

Electric boilers are a much 'greener' alternative to gas boilers. They aren’t fossil fuel boilers that burn gas, LPG, or coal to generate heat and don't release waste gases. If you're looking to reduce your carbon footprint, an electric boiler could be just the ticket.

You can lower your carbon footprint even further by using a green electricity provider.

Cheaper to install

Thanks to the absence of waste gases, an electric boiler does not need a flue or condensate so the installation is much easier and is likely to cost less than a gas boiler installation. Have a look at our guide to electric boiler installation for a bit more detail.

Flexible installation

Not only is an electric boiler installation cheaper, they don’t have to be installed on external/outdoor walls like gas and oil units. So within reason, you can choose where to put your new electric boiler.

Therefore, if you're looking for a cost-effective installation process and versatile heating solution, the best electric boiler could be the right choice for you.

No annual service

To ensure gas and oil boilers continue to work efficiently and to avoid breakdowns you need an annual service. These need to be done by a professional heating engineer and can cost you anything between £50 and £160.

The good news is electric boilers do not need this level of maintenance saving you some money every year. Just to note: If you do have a hot water cylinder with your electric boiler – continue to get this serviced once a year.

Easier to maintain

Only in the unlikely event of a breakdown are repairs ever needed. Unlike gas boilers, which can become blocked when not used, an electric circulation pump will continue to work even when it is inactive.

No risk of a carbon monoxide leak

Gas boilers produce harmful gases during operation, which are safely expelled out of the flue with a very small chance to leak. With an electric boiler you don't have to worry about any harmful gases leaking.

Light and compact

Having no flue or waste gases means the electric boiler unit is smaller and compact. You also get a lot more options on where you can install it.

Quiet operation

Unlike a gas boiler, there are no moving parts in an electric boiler which means they operate in near-silence when providing your heating and hot water. Sleep tight!

Perfect for homes not connected to the gas network

A lot of homes that are not connected to the National Grid tend to opt for an oil boiler, but one of the cons of an oil boiler is having to find room somewhere to store the oil. With an electric boiler, you don't have that problem. They're also a lot less maintenance than oil boilers.

Solar compatible

Solar PV Panels work with most electric boilers and the energy you generate can be used which will help you reduce your electricity bills. You could also invest in a storage battery which will store and release the free energy you have generated when you need it.

Solar thermal is another option, which heats your water in a cylinder. A solar-compatible electric boiler is a great way to lower your carbon footprint.

Having said this, you might be wondering how to find the best electric boiler for your home? Our team can help by providing you with up to 3 quotes from our trusted network of professional engineers in your area, who can advise you on the most suitable option for your home.

Our service is completely free and has no obligations, so you don't have to worry about fees nor about doing the mind numbing task of researching all by yourself. Click the button below to get started.

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Disadvantages of electric boilers

The main criticism of using an electric boiler as the sole source of heating and hot water is that electricity is more expensive- so in terms of running costs they just aren't winners. They are often limited as to the amount of hot water they can produce at any one time and so aren't recommended for larger homes.

You do need to have a good think before installing an electric boiler and make sure they are right for your circumstances. This is even more important if you live in a larger home as they may not be able to meet your demands for central heating and hot water.

Higher running costs

Electricity is significantly more expensive than gas which means your energy bills are likely to go up. Therefore the following question might come up: which ones are better, electric boiler vs gas boiler?

In 2023, Ofgem announced that the latest energy price cap will take effect and is currently at £2,074 per year for an average household that receives both gas and electricity from the same supplier.

This cap ensures that energy suppliers cannot charge you more than the specified amount. The price cap for July to September 2023 is therefore £2,074.

Furthermore, it is true that electricity is costlier than gas, however, with the price cap introduced by the UK government, other factors should be considered when choosing between a gas and an electric boiler for instance.

An Economy 7 tariff may help reduce costs as you get cheaper electricity rates during the night. Also, installing an electric boiler as part of a solar PV system will help reduce your total energy bills.

Less hot water

Electric boilers heat water on demand so they have limitations with the amount of hot water they can produce. If you’re looking for the best boiler for a large house with multiple bathrooms, an electric boiler may struggle to cope.

Power cuts

Power cuts are rare, but if one does happen you'll probably won't be able to get any heating or hot water. Having said that, this also applies to most gas and oil boilers as they are made up of electrical components.

Could blow property's fuse

Most electric boilers will use 48 amps, which takes up most of a 60amp fuse, which a lot of homes have. So, while your boiler is busy heating your home and hot water, having another couple of appliances going at the same time could blow the fuse. Speak to an electrician to check if an electric boiler is a viable option with the fuse in your home.

Is electric or gas best for your home?

Electric boilers are a good alternative to oil or LPG for homes off the grid and if you are keen to reduce your carbon footprint then an electric boiler is certainly worth considering. If you are connected to the grid and you are worried about an increase in your energy bills, you may want to stick with your gas boiler.

But if you’re wondering “Can I replace a gas boiler with an electric boiler?”, then you’ll be glad to know the answer is yes.

Why choose a gas boiler?

  • Electricity is 3-4 times more expensive than gas per kilowatt hour (kWh), so running costs will be significantly higher.
  • While an electric boiler does not use a fossil fuel, like gas, to generate heat and does not produce carbon emissions when operating, the electricity it uses is usually generated using fossil fuels when an electric boiler runs on electricity which comes from fossil fuels.
  • Electric boilers are usually only suitable for small homes as they cannot supply multiple outlets at the same time.

Why choose an electric boiler?

  • If you have solar PV panels installed in your home an electric boiler is a great option. You can use the electricity you generate which will see your energy bills reduced.
  • Efficiency is significantly higher in electric boilers. You'll be getting 99-100% from an electric boiler compared to 92-93% from a gas boiler. If you don't want to waste energy – an electric boiler could be the solution.
  • Unlike gas, oil, or LPG boilers, an electric boiler does not produce carbon emissions when working.
        Electric boilers         Gas boilers
Electric boilers present a significantly higher efficiency than gas boilers Gas is cheaper than electricity, making electric boiler to generally have higher running costs than gas boilers
Environmentally friendlier option since electric boilers do not produce carbon emissions Electric boilers cannot supply multiple outlets at the same time

After comparing electric and gas boilers, it is also important to get in contact with a professional in the field to ensure that you're making the best boiler choice for your specific circumstances.

By simply clicking the form below, we can easily provide you with up to 3 quotes from our trusted suppliers so you can compare multiple options and pick the one you prefer.

Of course, the service we provide is free of charge with no obligations, so don't hesitate any longer and save hours of your time by letting us do the hard work of looking for suppliers for you.

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Which are the best electric combi boilers?

If you're looking to change to an electric boiler you have plenty of options with models and manufacturers. We've listed a few of the best combi boilers below.

  • Comet Combi Boiler by Electric Heating Company
  • Electromax Combi Boiler by Heatrae Sadia
  • Mattira MAC15 by Elnur
  • THERMAFlow Electric Combi Boiler by THERMAFlow
  • Elektra EKC Combi Boilers by Electric Combi Boilers Company
Electric boiler manufacturers
Manufacturer Boiler Model Floor-standing or Wall-mounted? Available Outputs (kW) Dimensions (H x W x D) Efficiency Energy Rating Standard Warranty
Electric Heating Company Comet Combi Boiler Floor-standing 9 / 12 / 14.4 1745 x 580 x 630mm 100% Hot Water: C
Heating: D
2 years (10 years on cylinder)
Heatrae Sadia Electromax Floor-standing 6 /9 1476 x 550 x 600mm 99.8% Hot Water: C
Heating: D
2 years (10 years on cylinder)
Elnur Mattira MAC15 Wall-mounted 3 / 4 / 5 / 6 / 7 / 8 / 9 / 10 / 11 / 12 / 13 / 14 / 15 830 x 555 x 450mm 100% Hot Water: D
Heating: D
2 years (5 years on cylinder)
THERMAflow THERMAflow Electric Combi Boiler Floor-standing 10 / 11 / 13 / 14 / 16 / 18 From 1590 x 550 x 690mm up to 1920 x 710 x 850mm 100% Unknown 1 year (25 years on cylinder)
Electric Combi Boilers Co. Elektra EK.C Combi Boiler Wall-mounted 12kW (modulates from 2-12kW) 875 x 400 x 300mm 99.9% Unknown 2 years

Comet Combi

Comet Combi Boiler by Electric Heating Company

The Comet Combi boiler provides hot water for a wet central heating system and for domestic use. It includes a 140-litre Duplex stainless steel hot water cylinder to maximise the volume of hot water, but is compact in size and is pre-plumbed and pre-wired for ease of installation.

The Comet has a built-in programmer which enables you to set the temperature and schedule of your heating as well as a wireless thermostat. The Comet is available in outputs of 9kW, 12kW or 14.4kW. You can also select heating only, hot water only or use both at the same time. The Comet includes a 2 year warranty on the boiler with 10 year warranty on the cylinder.
Electromax

Electromax by Heatrae Sadia

The Electromax electric boiler can provide both heating and hot water for your home (at the same time) as it combines an electric flow boiler with a hot water storage cylinder and circulating pump.

All that the Electromax needs is a mains electricity supply and cold water. Inside the boiler is a duplex stainless steel unvented cylinder that has a 180 Litre capacity.

This enables it to deliver mains pressure showers, fast filling baths and a balanced supply of hot water to multiple tap outlets. The Electromax is designed for sealed systems and, thanks to its compact size, will fit into a standard domestic airing cupboard.

The Electromax is available in two domestic kW sizes: 6 or 9 kW. The Electromax includes a 2 year warranty on the boiler with 10 year warranty on the cylinder.
elnur mattira mac 15

Mattira MAC15 by Elnur

The Mattira MAC15 electric combi boiler is wall mounted and can provide both heating and hot water. The boiler is suitable for either single or 3-phase supplies and reduces energy consumption thanks to digital modulation.

The Mattira also includes a digital display, user-friendly controls and can deliver a hot water flow rate of up to 12 litres per minute. The Mattira is available in twelve different outputs from 3 to 15 kW. The Mattira MAC15 includes a 2 year warranty on the boiler with 2 year warranty on the cylinder.

thermaflow_electric_combi_boiler

THERMAflow

The THERMAflow High Efficiency Electric Combination Boiler is designed to operate during periods of cheaper electricity tariffs to enable you to reduce running costs and energy use while still meeting all of your heating and hot water demand. They claim that this can save users up to 40% on their heating.

The floorstanding THERMAFlow can be connected to a wood-burning or solar thermal system to reduce your electricity usage, heating bills and carbon footprint. The THERMAFlow is available in six outputs between 10-18 kW. The THERMAFlow includes a 1-year warranty on the boiler with 25-year warranty on the cylinder.
Electric Boilers Company Elektra EK.C

Elektra EK.C by Electric Boilers Company

The Elektra EK.C is a wall-mounted electric combi boiler which is suitable for smaller properties and flats. It provides instantaneous hot water (40-50°C) at a rate of 8 litres per minute, but filling a bath can take up to 15 minutes as the flow rate would need to be reduced. The Elektra is best suited to small homes with one bathroom.

The Elektra is only available as a 12 kW boiler, but it will modulate between 2-12 kW as needed. The Elektra boiler includes a 2 year warranty as standard.

Once you’ve decided on an electric combi boiler, a Gas Safe registered engineer can advise you further and also give you a quote for the boiler and installation costs. We recommend comparing quotes from up to 3 heating engineers in your area so that you can choose the best price.

If you don’t want to spend hours tediously calling these engineers one-by-one, just click the button below, answer some short questions, and we’ll take care of the rest for you. You’ll then be quickly on your way to having an electric combi boiler in your home this winter.

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What size electric boiler do I need?

A boiler's size relates to how powerful it is and is measured in kilowatts (kW). The higher the number, the more radiators and taps it can provide hot water for.

You'll find that most electric boilers are smaller than an oil, LPG or gas boiler, but it's important to remember that 'size' in the boiler world refers to how powerful it is and this is measured in kilowatts (kW). The higher the kW, the more heat and hot water it can provide.

Electric boilers tend to be less powerful than gas and oil boilers making them suitable for smaller homes and flats. An average gas boiler has a kW size of anywhere between 24-35 kW compared to 15 kW or less for an electric boiler.

There is an electric boiler sizing rule of thumb which suggests that you need 1.5 kW for each radiator in your home. This will be impacted by the size of your rooms, the height of the ceiling and how well-insulated the room is, and this is why a heating engineer is best placed to size a boiler for your home. Find out more in the What Size Electric Boiler do I Need guide. It will help you when it comes to installing an electric boiler with sufficient power.

Output rating for radiators
Number of Radiators Output rating
4 6 kW
6 9 kW
8 12 kW
10 15 kW

Remember, if you install an electric boiler that is too small for your home you'll suffer from a lack of hot water. It's just as important to avoid buying an electric boiler that is too big as you'll be using lots more electricity than you need and you'll get a bit of a shock when you see your energy bills.

Electric boiler efficiency and running costs

The reason for the high running cost of electric boilers is that the UK generates the vast majority of its electricity using fossil fuels. This also contributes to electric boilers receiving a lowly D-rating when it comes to their ErP efficiency rating, which can be confusing when they are also rated as 99-100% efficient.

Electric boiler efficiency

As most electricity is produced by fossil fuels, which emits lots of carbon into the atmosphere, electricity is considered a carbon intensive fuel. So, even if you're with an energy supplier that generates electricity with renewable technology, the electricity is still considered carbon intensive but as more suppliers adopt renewable generation, the high 'fuel factor' imposed on electricity is likely to drop.

The future is looking bright for renewable electricity generation, with the National Grid believing that all UK electricity generation could be producing zero carbon emissions by 2025. Find out more with Electric Boiler Efficiency Explained.

Running costs of electric boilers

In the UK the cost per unit of electricity is 52p/kWh, with the price varying depending on your tariff and the area you live, making it a lot more expensive than gas, which has a cost per unit of 15p/kWh.

While the electric boiler cost per month is higher than gas, as we've mentioned, you will be able to make savings in other areas, such as the installation, not needing to arrange an annual service and all-round maintenance costs.

We put electric boilers head-to-head with gas boilers to find out which are cheaper to run during their lifetime, and to find out which came out on top in our article on electric boilers vs gas boilers.

Electric boilers with solar PV

Solar PV panels convert natural energy from the sun into electricity you can use in your home. An electric boiler can be a great choice for small homes with solar PV panels as they may be able to generate their own heating and hot water using free electricity. This setup could significantly reduce the running costs of your boiler. Find out more about Running an Electric Combi Boiler with Solar.

Electric boiler prices

Electric boiler costs vary depending on the model and manufacturer. As you might expect, the smaller models will often be the cheapest with a price tag of around £650-£1,000 stretching up to £2,500 for the larger models.

It's not just the price of the electric boiler you need to consider. Installation costs will vary so it is important to compare multiple quotes.

Average price for each manufacturer
Manufacturer Boiler Model Average Price (estimated)
Electric Heating Company Comet Combi Boiler £2,300-£2,500
Heatrae Sadia Electromax £1,800-£2,000
Elnur Mattira MAC15 £1,750-£2,000
THERMAflow THERMAflow Electric Combi Boiler £2,300-£4,000
Electric Combi Boilers Co. Elektra EK.C Combi Boiler £900-£1,100

Electric boiler installation costs

On average, the cost of installing an electric boiler can range between £500-£1,000, but it's important to note installation costs will vary depending on the installer you choose, along with other variable factors. Naturally, the more complicated the installation, the more it will cost.

A boiler installation will be more expensive if you are changing from one type of boiler to another and/or upgrading radiators or underfloor heating. You may also end up paying more for a central heating installation in the winter as engineers tend to be busier, whereas work completed in the summer may be more competitively priced.

Remember to compare multiple quotes when making your choice. Boiler Guide can provide you with up to 3 boiler quotes from registered installers with no fee.

Get free electric boiler installation quotes

To find the best possible price for an electric boiler installation, we highly recommend comparing multiple quotes. Boiler Guide easily provides up to 3 of the most competitive quotes on the market to send to you so that you don't have to waste time doing research. All you need to do is choose the best deal for you. To start, all it takes is the click of a button and answering some short questions. We'll take care of the rest. No obligation, no hassle, no fee.

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Frequently Asked Questions

Do electric boilers use a lot of electricity?
When comparing an electric boiler to a gas boiler, you’ll find that an electric boiler will consume up to half as much energy as a gas boiler.

Can you heat a house with an electric boiler?
Yes, in fact, electric boilers are one of the most popular types of fuel sources for boilers. This is especially relevant as more houses turn away from fossil fuels, such as natural gas or LPG (such as a propane boiler).

What are the 3 types of heating systems?
There are three main types of central heating systems: wet system, warm air system, and a storage heater system. Electric boilers in the UK are usually a part of a wet system. Not all systems are suited for every house. Some require more space or parts to be installed.

Are electric boilers the future?
Electric boilers may very well be the future due to the many advantages of electric boilers, but there is also a growing number of boiler alternatives being installed. For example, heat pumps and solar panels can already be found in many homes across the UK.

Are electric boilers any good?
Yes, electric boilers are best for houses that are looking for oil or gas alternatives. Especially if you would like to lower your home’s carbon footprint.

Which is the best electric boiler for underfloor heating?

Both the Electric Heating Company Comet Combi Boiler and THERMAflow Combi Boiler due to their suitability for underfloor heating, 100% efficiency meaning that no energy is lost, are great options to compete for the title of best electric boiler for underfloor heating.

Which is the best electric boiler for radiant heat?

The Elnur Mattira MAC15 positions itself as an excellent option for your next best electric boiler for radiant heat because of its 100% efficiency and its wide variety of outputs from 3 kW to 15 kW.

What is the best brand of electric boiler?

The Electric Heating Company, Elnur and THERMAflow can all be considered reliable and excellent brands to consider when purchasing the best electric boiler. However, it is difficult to determine which is the best brand of electric boiler since this will ultimately depend on your personal preferences and circumstances.


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Becky Mckay

About the author

Becky Mckay

Becky has been a writer at Boiler Guide since 2021. Her vast boiler knowledge means she’s ready to help with any home heating query, big or small!

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