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How Much an Electric Boiler Will Cost You in the UK

Table of Contents

As we strive for energy efficiency and environmental sustainability, electric combi boilers have become a popular alternative to traditional gas and oil boilers.

But how much does an electric boiler cost? From purchase price to installation and running costs, we break down everything you need to know about the cost of electric combi boilers in the UK.

How Much an Electric Boiler Will Cost You? Snippet of news headline

What is an Electric Combi Boiler?

An electric combi boiler uses electricity to heat water, which is then circulated throughout your home to provide heating.

Unlike traditional gas or oil boilers, electric combi boilers do not use fossil fuels. They don’t produce harmful gases or fumes, making them eco-friendly heating choices.

The ‘combi’ in electric combi boilers stands for ‘combination.’ This means these boilers serve a dual purpose – they provide heat to your radiators and hot water to your taps, eliminating the need for separate water tank system boilers.

Woman Relaxing in Bath

Exploring Efficiency Ratings: A Comparative Study

Electric boilers are generally more efficient than gas and oil, with efficiency ratings often reaching up to an impressive 99%.

This means that very little energy goes to waste, as no waste gas escapes through the flue. In comparison, gas boilers are less efficient, typically from 89% to 95%.

However, it’s worth noting that electricity can be three times more expensive than gas. So, while electric boilers consume about half as much energy as gas boilers, they tend to be pricier to run.

When deciding between an electric boiler and a gas or oil , it’s crucial to consider factors such as consumption patterns, output capabilities, and their impact on costs and carbon footprint.

Electric boilers are an eco-friendly alternative to gas and oil since they don’t release CO2 into the atmosphere, which helps reduce carbon emissions.

They are also a viable option for homes that aren’t connected to the gas network, as long as the property isn’t too large and doesn’t have exceptionally high central heating and hot water demands.

Basically, electric boilers boast higher efficiency ratings than gas and oil but have higher operational costs.

When making your choice between these options, it’s essential to weigh factors like energy expenses, environmental impact, and the size and heating demands of your property.


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Initial Costs: How Much Does an Electric Combi Boiler Cost?

The initial cost of an electric combi boiler can vary greatly, depending on factors such as brand, size, and model.

On average, you can expect to pay between £1,200 and £5,500 for the unit. This does not include the cost of installation, which we will explore in the next section.

Here’s a quick breakdown of the average price ranges for some popular electric combi boiler models in the UK:


Model Price Range

Elnur Mattira MAC15 £1,200 – £1,600

Heatrae Sadia Electromax £1,700 – £2,300

EHC Comet Combi £1,500 – £2,000

Thermaflow Electric Combi £1,800 – £2,500

Amptec Electric Flow Boiler £1,300 – £1,800

Trianco Aztec Electric £1,300 – £1,700


chart of electric combi boiler costs

Installation Costs: What to Expect

The cost of installing an electric combi boiler can vary significantly, depending on several factors.

These include whether or not you already have the necessary plumbing in place, the complexity of the installation, and where you live.

If you already have plumbing installed, the average labour cost for electric boiler installation is about £300.

However, if a new boiler and plumbing needs to be installed, this can increase the labour cost to £1,000 or more.

Therefore, it’s crucial to factor in these potential additional costs when considering the overall price of an electric boiler.

Seasonal Factors: Winter vs. Summer

When it comes to electric heating systems, it’s crucial to understand that the seasons play a significant role in how much you’ll end up paying. Ever wondered why your energy bills shoot up during winter? Well, it’s not just because you’re making more cups of tea!

Winter Months: Cranking Up the Heat

In the winter, the demand for heating and hot water is naturally higher. Your electric boiler will be working overtime to keep you toasty. This means the output needs to be higher, and your consumption will increase. So, it’s no surprise that your electric boiler running costs will be at their peak during these chilly months.

If you’re using an electric central heating boiler, you might find that the unit is continually running to maintain a warm temperature throughout your home. This is especially true if your home isn’t well-insulated. Poor insulation means your boiler has to work even harder, pushing your costs through the roof.

Summer Months: A Breather for Your Boiler

Come summer, your electric boiler can finally catch its breath. The demand for central heating drops significantly, and you’ll likely only be using the boiler for hot water. This reduced workload means your consumption will decrease, leading to lower running costs.

However, if you have a separate hot water cylinder, your summer costs might not drop as much as you’d expect. Why? Because maintaining a constant supply of hot water can still be energy-intensive, especially if you love those long, hot showers.

Seasonal Tips: Making the Most of Your Boiler

  1. Insulation: Proper insulation can make a world of difference in both winter and summer. It keeps the heat in during winter and out during summer, reducing the workload on your electric heating systems.
  2. Smart Thermostats: These gadgets allow you to control your heating system remotely, enabling you to manage your consumption more efficiently.
  3. Renewable Systems: Consider integrating solar panels or air-source heat pumps to offset some of the energy costs. These can be particularly effective in the summer months.
  4. Regular Maintenance: Don’t underestimate the power of a well-maintained boiler. Regular check-ups from an engineer can ensure your unit is running efficiently, saving you money in the long run.

Running Costs: Keeping the Heat On

When considering the cost of an electric or gas combi boiler, it’s essential to consider the initial purchase and installation costs and the ongoing running costs.

After all, these running costs will make up most of your expenses over the boiler’s lifetime.

The cost of running an electric boiler in the UK can range from £500 to £1,500 per year, depending on various factors.

These include the boiler’s size, your home’s insulation, and your local electricity rates.

Assuming an average electric boiler output of 12kW and an average electricity rate of 16p per kWh, running an electric boiler for a typical UK household would be around £66 per month.

green homes grant scheme

Grants and Incentives: A Path to Financial Assistance

Wondering if there are specific grants tailored for renewable heating systems or energy-efficient gas boilers? If they exist, how can you start the application process, and what are the eligibility criteria for these financial incentives?

When choosing your heating solutions, it’s not just about their efficiency and eco-friendliness; your financial well-being comes into play too.

Uncovering potential financial support through grants and incentives can be a game-changer for your decision-making process.

You can visit this government link for detailed information on the Boiler Upgrade Scheme and how to apply. It’s a resource that can provide valuable insights to help you navigate the world of grants and incentives and make a well-informed choice.

This is based on 8 hours of heating per day for 30 days.

Here is a rough estimate of the monthly running cost of electric boilers of different sizes:

  • Small electric boiler (up to 12kW) – around £40-£70 per month
  • Medium electric boiler (12kW to 24kW) – around £70-£120 per month
  • Large electric boiler (over 24kW) – around £120-£200 per month

electric central heating renergy costs chart

Electric Boilers versus Gas and Oil Boilers

When comparing the cost of electric or natural gas combi boilers or oil, it’s essential to consider the initial and ongoing running costs.

While electric boilers can be somewhat cheaper to install than other fuel types, they can often be more expensive to run.

This is due to electricity generally being more expensive than gas or oil. However, this largely depends on your local electricity and gas rates, so it’s worth doing some calculations to see which option would be more cost-effective.

Furthermore, electric boilers may be more expensive to run but are often more efficient.

This means that while they may cost more to run, they can deliver more heat for your money, potentially saving you money in the long run.

How to Choose a Boiler, lady deciding between electric and gas boilers at showroom

Troubleshooting: What If Something Goes Wrong?

We’ve all been there: you’re enjoying a cosy evening at home when suddenly, the warmth vanishes. Your heating system is on the fritz, and you’re scratching your head. Don’t fret; we’ve got you covered with some common issues and how to troubleshoot them.

Signs Your Electric System Needs a Check-up

  1. Inconsistent Heating: If some rooms feel like a sauna while others are like a freezer, it might be time to check your electric heating system. Uneven heating can indicate your heating system’s power output or consumption issues.
  2. Strange Noises: Electric boilers are generally quiet. So, if you start hearing odd sounds, it’s a red flag. This could be due to dry core storage issues or a failing hot water cylinder.
  3. Higher Energy Bills: If you notice a sudden spike in your energy costs, it could mean your electric heating system is not running efficiently.
  4. No Hot Water: This one’s a no-brainer. If you’re not getting any hot water, it’s time to investigate. The culprit could be a faulty hot water demand system or a malfunctioning storage boiler.

When to Call an Electric Heating Engineer

  1. Frequent Breakdowns: If your heating system is more off than on, it’s time to call a professional. Frequent issues can indicate a more significant problem that DIY won’t fix.
  2. Safety Concerns: Electric boilers come with standard safety features like overheat protection and pressure relief valves. If you suspect these are not functioning correctly, it’s better to be safe and call an electric heating engineer.
  3. Major Repairs: For anything that involves opening up the electric boiler or messing with the electrical system, it’s best to leave it to the experts.
  4. Annual Check-up: Even if everything seems fine, it’s good practice to have an energy-efficient check-up by a certified engineer every couple of years. This ensures your system is running optimally and can help you avoid unexpected energy costs.

Maintenance Costs: Keeping Your Boiler in Top Shape

Another essential factor to consider when calculating the cost of an electric combi boiler is the cost of maintenance.

Unlike other fuel types, electric boilers require very little maintenance, saving you money in the long run.

However, regularly inspecting your boiler is essential to ensure it operates safely and efficiently.

The cost of these inspections will depend on the specific service provider, but you can generally expect to pay around £75 to £125 per hour for a professional HVAC technician.

User Reviews: Real Voices, Real Experiences

Let’s bring in the real voices of users through some insightful reviews and testimonials. What are people genuinely saying about their experiences with electric combi boilers? Are they satisfied with the running costs, overall expenses, and consumption?

Sarah: “I’ve had my electric combi boiler for a year now and am thrilled with it! Not only is it super efficient, but my monthly energy bills have gone down noticeably. It’s a win-win for my comfort and my wallet.” – Sarah.

Mark: “I was a bit sceptical at first, given the initial cost, but my electric combi boiler has been a game-changer. The lower energy consumption is evident, and I’ve actually saved money in the long run. No regrets!” – Mark

Emily: “I live in an area without a gas supply, so electricity was my only option. The combi boiler has been fantastic. It’s cost-effective, and I’ve seen a significant reduction in my footprint. It’s great to be eco-friendly and save on bills!” – Emily.

The Environmental and Economic Benefits of Electric Combi Boilers

While the cost of an electric combi boiler can be higher than that of a gas or oil fuel boiler, several environmental and economic benefits exist.

Firstly, these are more energy-efficient than their natural gas or oil counterparts. This means that they waste less energy, which can result in lower energy bills.

Secondly, electric combi boilers are more environmentally friendly. They produce no harmful gases or fumes, making them a more sustainable choice for home heating and hot water.

Finally, electric combi boilers can be cheaper and easier to install, particularly in homes that do not already have a gas or oil supply.

Final Thoughts: Is an Electric Combi Boiler Worth the Cost?

When considering the cost of an electric combi boiler, looking at the bigger picture is essential.

While the initial purchase and installation costs can be higher than those of gas or oil, the ongoing running costs can often be lower.

Furthermore, the environmental benefits of an electric combi boiler cannot be overstated.

By choosing an electric combi boiler, you’re selecting a cost-effective heating solution and making a choice that’s good for the environment.

In conclusion, while an electric combi boiler may have a higher initial cost, the potential savings in running costs, combined with the environmental benefits, can make it a worthwhile investment.

How Much an Electric Boiler Will Cost You FAQs

How do I calculate the running cost of an electric boiler?

To calculate the running cost of an electric boiler, you’ll need to know the power rating of the boiler (in kW) and the price of electricity per kWh in your area.

For instance, if your boiler has a power rating of 6kW and the cost of electricity is 15p per kWh, running the boiler for one hour would be 90p (6 kW x 15p).

How do electric boilers work?

Electric boilers use electricity to heat water, which is then circulated throughout your home for heating.

They operate without a heat pump gas central heating well, producing any harmful gases or fumes, making them a safe and environmentally friendly heating option.

Are electric boilers expensive to run?

While electric boilers can be more expensive to run than gas or oil due to the higher cost of electricity, they can often be more efficient.

This means that over time, the savings in energy bills can offset the higher running costs.

How long do electric boilers last?

The lifespan of an electric boiler can vary depending on the specific model and how well it’s maintained. However, on average, you can expect an electric boiler to last around 15 years.

Can you replace standard fuel boilers with an electric boiler?

Yes, it’s possible to replace it with an electric boiler. However, you’ll need to consider whether your home’s electrical system can handle the electric boiler prices on additional load and whether an electric boiler can provide enough heat for your home’s size and heating requirements.

What are the environmental benefits of using an electric boiler?

Electric boilers, including combi boilers, are eco-friendly as they don’t emit harmful gases or fumes. This is an excellent choice if you’re keen on reducing your carbon footprint.

Do electric boilers need a lot of maintenance?

Generally, electric boilers require less upkeep than gas boilers. You won’t need annual safety checks, but a visit from a qualified engineer every couple of years is a good idea.

Is it difficult to install an electric boiler?

Not at all. Installing an electric boiler is usually easier than setting up an electric system boiler and gas and oil boilers. You don’t have to worry about a gas line or mains gas connection.

Can electric boilers be used with underfloor heating?

Electric central heating systems, including electric central heating units and boilers, work well with underfloor electric heating systems.

What are the safety features of an electric boiler?

Electric boilers are built with a variety of standard safety features to ensure they operate securely. Not only do they come with overheating protection to prevent dangerous temperatures, but they also feature pressure relief valves to manage any excess pressure.

Additionally, many modern models include circuit breakers and fault detection systems that halt operations if an electrical issue is detected. Some even offer smart sensors that monitor water and electricity flow, automatically shutting down the system in case of irregularities. These safety features make electric boilers a reliable choice for home heating.

How do I choose the right size electric boiler for my home?

The size of your new electric combi boiler will depend on various factors, like your domestic hot water, demand and the size of your home. Consulting with a heating engineer is advised.

Are there any grants or incentives for installing an electric boiler?

Some areas offer grants for energy-efficient gas boilers and renewable heating systems like solar panels.

How does an electric boiler affect my home’s energy rating?

An energy-efficient electric boiler can improve your home’s energy consumption rating, increasing your property value.

What happens if there’s a power cut?

In the event of a power cut, your electric or heating system will stop working. A backup like a heat pump or storage boiler is a good idea.

How do I calculate the running cost of an electric boiler?

To determine the electric and gas boiler running costs, you’ll need to know the power output and the cost of electricity in your area.

Are electric boilers expensive to run?

While the electric boiler cost can be higher than the gas boiler cost, electric boiler costs have running costs; they are often more efficient, which can offset the running costs over time.

How long do electric boilers last?

The lifespan of an electric boiler can vary, but on average, you can expect it to last around 15 years.

Can I replace a gas or oil boiler with an electric boiler?

Replacing a gas or oil boiler with an electric boiler is possible. However, it would be best to consider installation costs and whether your home’s electrical system can handle it.

How do electric boilers work?

Electric boilers use electricity to heat water, which is used for central heating and domestic warm water.


Disclosure: This post contains affiliate links, including Amazon Associate links, through which I earn from qualifying purchases at no extra cost to you. I only recommend products I genuinely believe in. Visit my Privacy Policy page for more information.