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Last updated: 22 November 2024

New Boiler Costs: How Much is a New Boiler? ({monthyear})

New boiler costs in the UK
  • New boiler costs range from £540 - £3,500, with an additional £1000 - £1,500 for installation.
  • The cost of a new boiler depends on its type, model, manufacturer, fuel source, and the type of boiler it may be replacing.
  • Installing an energy-efficient boiler can save the average household up to £875 annually.
  • Grants and schemes such as the Boiler Upgrade Scheme and ECO4 can pay up to £7,500 for efficient heating systems like biomass boilers.

Are you due for a boiler upgrade? Then you should know how much you can expect your new boiler to cost. Typically, prices in the UK range from £540 to £3,500 for a boiler unit and an additional £1,000 - £1,500 for installation fees. 

There are several factors that can affect your total expenses, and you should know about these to avoid overspending on your heating system. In this guide, we’ll discuss the costs of a new boiler and the factors that influence it.

Continue reading to learn more about what factors into boiler expenses, or check out our explainer video below:

New Boiler Cost Breakdown - What to Expect?

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How much is a new boiler?

How much is a new boiler?
Type of
boiler / Fuel
source
Cost
excl.
installation
Cost inc.
installation (£1,000 - £1,500)
Average
inc.
installation
Combi£540 - £3,500£1,500 - £4,500£3,000
System£650 - £3,400£1,580 - £5,000£3,290
Conventional £700 - £3,000£1,600 - £5,000£3,050
Electric£450 - £3,150£1,590 - £4,000£2,795
Biomass£4,000 - £12,000£6,000 - £21,000£15,500

The average cost of a new boiler stretches anywhere between £540-£3,500, with an additional £1,500-£3,500 installation fee. However, the prices largely depend on multiple factors like boiler type, fuel, model, or brand. Therefore, the combi boiler cost or the cost of a new gas boiler are usually different to the other types in their category.

Combi boiler cost

New boiler typePrice rangeAverage inc. installation
Combi£500 - £3,500£3,000

Combi boilers are the most popular choice in the UK, mainly because of their compact size. They come as a single unit and can easily fit into a kitchen cupboard. The combi boiler prices range from £540 to £3,400.

Benefits of a combi boiler
  • Space-saving
  • Cost-effective for smaller households
  • Energy-efficient
  • On-demand hot water
  • Combi boiler installation is easy and can be completed in 1 – 2 days.
Disadvantages of a combi boiler
  • Limited hot water supply
  • Dependence on mains pressure
  • No backup during power outages

Combi boiler prices fitted

The price of having a new combi boiler installed can be anywhere between £1,500 and £3,500, depending primarily on the brand and the fuel type you choose. Here’s a breakdown of the estimated costs:

Boiler rangeBoiler price range
Economy£540–£900
Mid-range£1,000–£1,500
High-end£1,500–£3,500

Important to note that not every heating project requires a new boiler installation. In some cases, a system upgrade is needed, which calls for a boiler replacement.

Cost of a combi boiler replacement

Upgrading your combi boiler can be a costly task, but it’s easier to manage when you know what’s involved. We’ve broken down each type of combi boiler installation in the table below, so you can get a clear idea of the estimated costs:

New boiler typeAverage cost, exc. installationAverage installation costs
Combi to combi£540 - £3,700£600 - £1,500
System to combi£580 - £3,700£1,000 - £2,600
Conventional to combi£600 - £3,700£1,000 - £3,500

For prices tailored to your specific situation, you’ll want to consult a reliable professional. Fortunately, finding one has never been easier! With our free quotes service, you can get in touch with up to 3 local boiler installers in no time. Just click below to get started now!

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System boiler cost

New boiler typePrice rangeAverage inc. installation
System£650 - £3,400£3,290

System boilers, alongside a hot water cylinder, keep a constant supply of hot water storage provided by the local mains supply. This makes a system boiler suitable for medium-to-large homes with high energy demands.

Benefits of a system boiler
  • Consistent water pressure
  • Higher hot water capacity
  • Instant hot water
  • Efficient for high-demand households
Disadvantages of a system boiler
  • Uses energy to keep water hot
  • Potential hot water wait time if the tank is empty
  • Space requirements due to extra elements
  • Higher maintenance costs vs combi

GreenMatch is committed to the UK’s transition to renewable, low-carbon heating. As these new technologies emerge, it is clear that the upfront costs make them unattainable to many UK homes.

Therefore, switching to a new, energy-efficient boiler is the most cost-effective strategy for reducing your overall carbon footprint until these new technologies become more financially viable.

Conventional boiler cost

New boiler typePrice rangeAverage inc. installation
Conventional£990 - £3,000£2,795

Conventional boilers are the more traditional boiler types, typically found in older homes and buildings. Out of all boiler types, these will require the most space and installing one is only advised if you have a conventional boiler as your existing heating system. This is because a conventional boiler requires a hot water cylinder and a cold water feed tank, which are expensive and time-consuming to install.

Benefits of a conventional boiler
  • Consistent water pressure
  • Suitable for bigger homes
  • Available hot water during power outages
  • Compatible with solar heating
Disadvantages of a conventional boiler
  • Require more space
  • Energy inefficiency
  • Risk of leaks

Electric boiler cost

New boiler typePrice rangeAverage inc. installation
Electric£448 - £3,150£1,600–£3,500

In terms of new boiler prices, those of electric boilers are comparable to those of standard combi boilers. They are a highly efficient option for homes without a connection to the gas grid, as the best electric boilers on the market have efficiency ratings close to 100%. 

However, homes with solar panels can supply an electric boiler with free, sustainable energy and dramatically reduce their home energy bills. 

That said, it’s important to note that as a fuel type, electricity is 3 times more expensive than natural gas, which may significantly impact your energy bills in the long run. So, be sure to consider this before getting an electric combi boiler.

Benefits of an electric boiler
  • Consistent water pressure
  • Suitable for bigger homes
  • Available hot water during power outages
  • Compatible with solar heating
Disadvantages of an electric boiler
  • More expensive to run than gas boilers.
  • Limited output for larger homes.
  • Power outage vulnerability.

Boiler replacement cost: Influencing factors

factors influencing boiler costs

There are multiple factors that impact the total cost of a new boiler. These include: 

  • Boiler type: The boiler and fuel type you choose have a direct impact on the total cost of your new heating system. System boilers come with water cylinders; conventional boilers are much older (and not recommended) but have extensive pipework and additional tanks to consider. In terms of fuel type, electric and biomass boilers tend to be pricier than traditional options such as natural gas. 
  • Power output size: The output size of your boiler can also impact cost, as the larger (more powerful) it is can often mean it is more expensive. This is, however, something an experienced installer can help with, as lesser-known brands can sometimes offer the same performance level of boiler, just without the expensive brand attached!
  • Boiler make and model:  The brand and model of the boiler you choose can make a difference. Well-known brands such as Worcester Bosch or Viessmann can charge more simply for their name/reputation.
  • Installation complexity: Another major cost factor to be aware of is the complexity of your installation. If you wish to change from one boiler type to another (e.g. combi to system) it can take extra work and additional parts to complete the job. In contrast, if you need a straightforward replacement (combi to combi) it will likely be very quick and easy, taking your installer less time and costing less.
  • Warranty coverage: Other elements you might end up paying for include new parts, a cleaning of your pipework, or even basic elements like an extended warranty. 

With these many factors to consider, choosing a new boiler for your home might become a daunting task. Consulting a qualified installer could secure a boiler option that is tailored to your situation. However, searching for a trustworthy installer can drag on for days (if not weeks) if done alone!

Our handy service can provide you with up to 3 free, non-binding quotes from trusted professionals in your area. Click the button below and out a 30-second form to get started.

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New boiler costs: Prices per manufacturer

Boiler manufacturers base their average new boiler costs on different factors, and there can be some variance between them. These include the additional features that come with the boiler, the brand’s reputation, and the overall quality of the model.

Below, you can see the estimated price ranges for each manufacturer per boiler type:

ManufacturerCombi boiler price rangeSystem boiler price rangeConventional boiler price range
Worcester Bosch Best Combi Boiler£682 – £3,790£1,139 - £3,400£1,055 - £2,960
Vaillant Best Combi Boiler£947 – £2,241£1,223 - £1,863£990 - £2,060
Viessmann Best Combi Boiler£1,205 – £3,720£1,090 - £2,245£1,181 - £1,750
ideal£1,100 – £1,700£1,010 - £1,755£1,055 - £1,444
alpha£600 - £1,700£860 - £2,500£700 - £800
Baxi Best Combi Boiler£665 – £1,520£1,100 - £1,490£929 - £1,400

Since there can be some variance in the average new boiler costs, the table below breaks these down into low to high price ranges.

Boiler typeBudget modelsMid-range modelsPremium models
Combi£540 - £900£900 - £2,000£2,000 - £3,000
System£580 - £900£900 - £2,500£2,500 - £3,500
Conventional £600 - £900£900 - £2,500£2,500 - £3,500

Cost of new boiler: Various boiler models

Premium boiler models come with the highest power outputs and tend to be most suited to the largest homes with the highest energy demands. Some of the most popular models from various well-known companies:

ManufacturerBoiler cost
Worcester Bosch Greenstar 8000+ Style£1,480 - £2,900
Vaillant ecoTEC pro£931 - £1,560
Viessmann Vitodens£1,030 - £3,700
Ideal Logic 2 Max£1,120 - £1,450
Alpha E-Tec£710 - £1,230
Baxi 600£1,230 - £1,530

The figures in the table are merely guidelines that can help you make your final choice. However, for the most up-to-date prices, it’s best to consult a specialist. 

With this in mind, GreenMatch can eliminate the pain of spending hours individually sourcing quotes on your own, by directly connecting you with up to 3 licensed heating engineers. This makes comparing quotes quick and easy. Our service is free of charge and without obligation.

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What grants does the UK Government provide for new boilers?

The UK, Welsh and Scottish Governments currently have several grants and schemes open to help homeowners upgrade their heating systems. Some of these are the Boiler Upgrade Scheme (BUS), which can alleviate the upfront biomass boiler cost,  and the Energy Company Obligation Scheme (ECO4).

Here’s an overview of all the boiler grants available today: 

CountryGrant nameAmountEligibility criteria
England, WalesBoiler Upgrade Scheme
(April 2022–April 2025)
£5,000–£7,500Replacing fossil heating systems with heat pumps or biomass boilers
England, Scotland, WalesECO4 Scheme
(April 2022–March 2026)
VariesLow-income households which receive certain benefits
Northern IrelandAffordable Warmth Scheme
(September 2023–March 2026)
£7,500Homeowners 65+ years of age with certain benefits, annual income less than £23,000, boiler 15+ years old
ScotlandHome Energy Scotland
(Ongoing)
£7,500–£9,000Owner-occupiers and eligible private landlords

Please keep in mind that grants and schemes are constantly changing, so it’s important to keep up to date if you wish to take advantage of these opportunities. We recommend checking your local Government websites to stay in the loop.

Boiler installation costs: Additional costs included

The average cost for boiler installation is usually between £1,000 - £1,500 but can be more based on the additional parts and labour that come with more complex installations. This will depend on what parts need to be removed or added to make the new boiler fit.

As a result, a like-for-like swap will cost considerably less than switching to a new boiler type. This is because you won’t need to adjust the pipework or install additional units. 

That said, here are some additional costs that may impact your total expenses: 

Extra featurePrice range
System power flush£300 - £600
Magnetic filter£100 - £200
Flue pipe (vertical/horizontal)£300-£700/£200
Thermostatic heat controls£25 - £200

It's worth noting that all prices here and above are approximate and are subject to change. Please consult a professional installer in your area to get the most tailored price. 

Are labour costs included in the boiler installation?

As for the labour costs, the price largely depends on multiple factors like location, pipework to be done, and the complexity of the job. A straightforward replacement (like a combi to combi) means you’re looking at 1 - 2 day's of work, so you might be charged £500-£1,000.

However, more complex jobs that last multiple days will probably cost you in the region of £2,000–£3,000.

A surefire way to have your boiler installed properly is to look for an engineer with the right qualifications. For example, any gas boiler needs to be handled by a Gas Safe registered engineer, and an oil boiler requires an OFTEC technician.

Summary: Average cost of boiler replacement

The average cost of a new boiler replacement will typically fall between £1,500 - £5,000 if you’re getting a combi, system, or conventional boiler. This accounts for the cost of a new boiler, which typically falls between £540 - £3,500 and the average cost for installation, between £1,000 - £1,500.

The most expensive boiler replacement costs are for complex installations where a new type replaces the boiler, the pipework needs adjustment/replacements, or the boiler is moved to a new location.

Ready to invest in a new boiler? Then, you’ll want to look for a reliable installer while securing the best deal for your boiler replacement. Rather than spending days on research and comparisons on your own, why not fill out our 30-second form and let us do the hard work? We will provide you with up to 3 free quotes from trusted installers in your area.

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