New boiler costs range from £500 to £3,500 before installation.
The cost of a new boiler depends on the boiler type, its model and manufacturer, warranty, your housing situation and requirements.
The Boiler Upgrade Scheme and ECO4 can help you save up to £6,000 on boiler costs.
The averagecost of a new boiler is a subject most UK homeowners would rather not think about. But let's face it, if your current boiler leaves a lot to be desired, you'll be left looking for a solid replacement.
As boilers age, their running costs tend to rise due to decreased efficiency over time. Upgrading to a new boiler can significantly boost efficiency and reduce energy expenses.
A pesky situation like this is bound to raise the question: How much do boilers cost? This leads to the question: How much does a new boiler cost in the UK? What does it cost to fit a boiler? And what exactly is the average boiler replacement cost in the UK?
There’s no need to look any further for the answers to these questions – we’ve got you covered. In this article, we'll walk you through everything you need to know about your new boiler cost and help you save money along the way.
Start first with getting the best boiler deal. You can search for boiler options independently to find a heating engineer who could meet your requirements. However, this can take hours if not days. Moreover, that’s not a bulletproof way to find a certified company with the proper expertise for the best price.
Fortunately, there’s a way to avoid all this stress and save your precious time. Fill out our quick 30-second form and we’ll provide you with up to 3 quotes from local Gas Safe registered boiler installers. To start comparing prices, click the button below for free, no-obligation quotes.
The cost of a new boiler can vary based on the type and complexity of installation. As a gas boiler must be installed by a Gas Safe registered heating engineer, you'll also need to take installation costs into account. Let's take a deep dive into these factors and find out what the cost of a new boiler looks like in the UK.
Each boiler has its own pros and price class. For example, the new combi boiler costs differ from that of a system boiler replacement. It's important to keep these differences in mind when deciding on a brand-new boiler.
In the coming sections, the costs for each boiler type will be discussed in further detail.
Combi boiler cost
A combi boiler is a type of boiler that provides both hot water and central heating in the same system. This makes it perfect for small properties with low heating demands.
So, how much is a new boiler? New combi boiler costs usually range from £500 to £3,000. However, you should keep in mind that this excludes the combi boiler’s installation cost. Prepare for this when calculating your total budget.
Combi Boiler Prices Fitted
Boiler Type
Budget Models
Mid-range Models
Premium Models
Combi
£500-£900
£900-£2,000
£2,000-£3,000
Boiler replacement and installation costs can vary significantly based on specific requirements and location. Fitting a new combi boiler typically costs between £500 to £3,500, including installation and necessary components for a fully functional heating system.
New combi boiler costs depend on several factors, such as the manufacturer, model and fuel. You usually pay a higher price for increased performance and a prolonged boiler warranty period as well. The size of your home and your energy requirements also play a major role because these factors will influence the output size you choose.
In addition, you must consider your specific boiler replacement situation. Here are typical boiler replacement costs:
Replacement situation
Estimated cost
Old combi boiler replaced with the new one; the same location
£500 – £3,000
System boiler replaced with a new combi boiler
£580 – £3,500
Regular boiler replaced with a new combi boiler
£600 – £3,500
Cost of replacing a conventional boiler with a combi
If there’s a need to free up space or reduce energy bills, consider replacing your conventional boiler with a brand-new combi boiler.
A combi boiler offers a wide range of benefits, such as high efficiency, less maintenance needed and a far more convenient size. You could even get a loft conversion after removing the big water tanks.
However, although combi boilers offer reduced energy costs and space efficiency, if your home is too large for a combi boiler, you may sacrifice the warmth and comfort your household requires. Keep this in consideration.
While such a replacement is overall a cost-effective decision, it brings additional costs along:
Service
Cost
Hot water storage cylinder removal cost
£100 – £150
Feed and expansion tank removal cost
£200 – £300
Despite the additional costs of replacing a conventional boiler with a combi boiler, changing to a combi is often a worthwhile investment.
If you combine the boiler replacement cost with these additional costs, you can expect to pay approximately £1,900 to £3,950 for your new boiler. New combi boiler costs combined with installation and replacement costs round up to approximately £3,500 to £7,450.
Service
Cost
New combi boiler + installation + removal
£1,900-£3,950
Replacement
£3,500 – £7,450
Conventional boiler cost
A conventional boiler consists of a feed and expansion tank and a cold water cistern in the loft or attic. A hot water storage cylinder is required as well, usually stored in an airing cupboard. The cost of a conventional boiler depends on the:
Brand
Model
Warranty
Installation cost
Property size
For instance, if you own a large 7-bedroom house, you will need a powerful boiler. As a rule of thumb, the larger a property, the bigger and more powerful the boiler it needs. You could base ‘what size boiler do I need?’ on how many radiators and bathrooms you have.
Type
Price range (excl. installation)
Est. installation price
Conventional
£600-£3,500
£1,700-£4,000
Advantages of a conventional boiler:
Suitable for larger houses as they can supply ample amounts of hot water simultaneously to multiple bathrooms.
Backup hot water can be obtained by installing an immersion heater in the hot water cylinder.
Allows multiple users to access hot water at the same time.
Disadvantages of a conventional boiler:
Requires sufficient space for the header tank and cold water storage tank, as well as the boiler itself and the hot water cylinder.
May result in low-pressure flow for showers and hot water.
Does not provide instant access to hot water.
Requires additional space for the boiler, cylinder, and tanks.
Not recommended for areas with low local water pressure.
System boiler cost
A system boiler provides heat to the central heating and hot water system through a storage cylinder. You can expect to pay between £580 to £3,500 for a new system boiler. You may also be charged with additional boiler fitting costs ranging from £1,580 – £5,000.
To find out the system boiler cost as well as its replacement price, we’ll have to look at several other factors. The manufacturer, model and fuel play a major role in choosing your system boiler. Yet, the size of your property, your home’s energy needs, the efficiency rating, and the warranty length of your new system boiler contribute to the system boiler cost too.
However, it is important to note that the boiler prices shown above are just rough estimates to give you an idea of the average cost of a new boiler. The best way to know the exact boiler price for your home is by getting several quotes from heating engineers near you.
Researching and negotiating with the engineers might take hours or even days and still leave you with nothing but extra stress.
Fortunately, we at Boiler Guide can connect you with up to 3 approved boiler installers near you for free!
Just fill in our 30-second form, and we'll do the rest.
While average boiler prices may be unpredictable, the manufacturer you pick is entirely within your control. Below, we’ve listed the best boiler manufacturers and the typical boiler cost they charge. So you're free to analyse the boiler prices and tailor them to your project and budget.
Manufacturer
Combi boiler price range
System boiler price range
Conventional boiler price range
Worcester Bosch
£795-£2,865
£991-£2,515
£819-£2,402
Vaillant
£910-£1,689
£888-£2,164
£854-£1,684
Viessmann
£851-£1,453
£1,110-£1,382
£890-£1,453
Ideal
£826-£1,394
£881-£1,329
£860-£1,692
Alpha
£616-£1,698
£859-£2,475
£704-£805
Baxi
£659-£1,698
£828-£1,074
£731-£1,692
So, a new boiler cost from one of these manufacturers is likely between £700 and £2,865. However, it's possible to find a new boiler price tag for as little as £616.
Are you looking for ways to save money and reduce energy bills? Then take a look at the best cheap boilers.
Cost of a new boiler: Breakdown by fuel type and models
Installing a new boiler in your UK home typically costs between £1,500 and £5,000. The price of boilers can fluctuate based on the size and type required. For example, combi boilers range from £500 to £3,000, conventional boilers cost between £600 and £3,500, and system boilers are priced from £580 to £3,500.
Many household appliances offer product variations. Boilers are no exception and come in different types with varying price classes. Let's take a closer look at what you can expect to pay.
Boiler type
Budget models
Mid-range models
Premium models
Combi
£500-£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
Boiler replacement cost in the UK always depends on your specific circumstances and needs.
Finally, the fuel your new boiler will use will impact the cost of installing a new boiler. We will focus on the most common types of fuel used in the UK:
Gas
Oil
Electricity
Below we’ll take you through each one.
New gas boiler cost
A gas boiler is a type of boiler that operates by using gas to heat water or steam which then warms the house. Gas-fuelled boilers are the most common ones in the UK and they can be used with radiators or underfloor heating.
But how much does a new gas boiler cost? A new gas boiler costs between £2,000 and £4,000, on average. However, in cases of complex installations, the installation prices of gas boilers could stretch to £4,000.
New gas boiler cost (excl. installation)
Est. installation price
£2,000 - £4,000
£500 - £4,000
You might be wondering which boiler type you need and how expensive the installation would be for your property. The best way to find out is by comparing quotes from different boiler installers. Yet finding and calling installers can cost you hours of your precious free time.
Thankfully, there’s a way to avoid all this hassle.
Boiler Guide can connect you with up to 3 Gas Safe and OFTEC registered engineers for free.
Fill in our 30-second form, and we’ll do the rest.
An oil boiler operates by burning oil or diesel fuel to provide heating for the house. Oil boilers are very similar to gas boilers in the way they function, they only use oil instead of natural gas to provide heating and hot water. This makes them the most popular heating alternative for homes that aren’t connected to the gas network.
Oil boiler prices for one of these units start at £1,000 and can go well above £4,000. The price depends on the unit size, manufacturer, and installation costs. In total, new oil boiler replacement cost, including installation, could cost between £2,500 and £4,500.
Furthermore, running an oil boiler could cost around £1,250 per year, about £250 more expensive than using gas to heat your house.
New electric boiler cost
An electric boiler uses electrical energy for heating and domestic hot water. There are several variations of electric boilers on the market, such as the electric combi boiler, the electric storage boiler, the electric CPSU (Combined Primary Storage Unit) boiler, the Dry Core Storage boiler, and the solar-compatible boiler.
The average price of an electric boiler can range from £590 to £2,500 depending on the brand, boiler size, and complexity of installation. Moreover, installation costs will likely fall between £1,600 and £3,500 depending on the location of your home and heating requirements.
New electric boiler cost (excl. installation)
Est. installation price
£590 – £2,500
£1,600 – £3,500
Electric boilers are a worthwhile purchase for homes without gas and people looking to lower their carbon footprint. However, you should consider that most electricity in the UK is generated by burning fossil fuels. Additionally, it is much more expensive than gas and oil.
The running costs of an electric boiler in a typical household could be as high as £3,000. Of course, it would be less for smaller 1 or 2-bedroom homes. But it would influence the cost of a boiler for a 4 bedroom house more as well.
New boiler installation cost
It is crucial to take into account the installation costs for the new boiler as well. Let’s delve deeper into exploring these expenses.
How much does a boiler installation cost? That’s hard to say. On average, the cost of boiler installations in the UK ranges from £1,500 to £3,000. This fee accounts for the engineer’s hours and the complexity of the installation.
In case of installing a new boiler, your project might need some old units removed and some additional units installed.
Additional spending might be the following:
System power flush: £50 - £150
Magnetic filter: £100 - £150
Thermostatic heat controls: £70 - £650
New boiler flue pipe: £50 - £150
New boiler installation cost
Additional costs
£1,500 - £3,000
£50 - £650
The disparity between the costs is mainly caused by the varying labour costs in different areas and the complexity of the installation. For example, a new boiler in London costs more than a new oil boiler in Northern Ireland. Plus, a straightforward installation is cheaper than a complex job.
To get a better idea of how much it is to install a boiler and to get the best possible deal, it’s important to compare quotes from different heating engineers. Spending hours of your time independently researching and contacting different installers in your area can become another daunting chore to add to your daily routine.
Alternatively, you can simply fill out our 30-second form, and we'll do the rest. You’ll receive up to 3 free quotes from qualified heating engineers in your area which you can objectively compare. It's free and you don't have to accept any of the offers you receive.
Typical boiler replacement costs can be influenced by the need to use the following additional boiler elements:
Vertical flue: If your boiler requires a vertically installed flue, the installation cost will be higher compared to a horizontal flue. The total price will depend on the complexity of the installation.
Plume kit: If your boiler flue is too close to a window, door, or neighbouring property, a plume kit will be necessary to extend the flue and ensure the safe exit of harmful gases. The cost of a plume kit can range from £90 to £150, depending on the boiler brand and the specific connection requirements.
Main gas pipe: If your main gas pipe needs to be upgraded or relocated to accommodate the new boiler, this can contribute to the overall installation cost. The cost will depend on the installation's complexity and your home's location.
Flue type: The type of flue needed depends on the shape of your building and the boiler’s location. New boiler replacements typically utilise round flues, while older ducts (over 15 years old) are more likely to have a square end. The installation cost will be higher if a square flue requires bricking up or a vertical flue is necessary.
Is the government giving grants for new boilers?
We'll be honest here: a new boiler won't be cheap. However a range of support, grants and schemes is available to help UK citizens effortlessly save money on their new boilers. Still, you have to match certain criteria to be eligible.
Eligible homeowners can expect to have the costs of their new boilers partially covered and sometimes even get a boiler for free. Curious if you qualify? Then take a look at our article on theECO Scheme. You can also take a look at the Boiler Upgrade Scheme (BUS) which covers biomass boilers.
Summary: average cost of new boiler replacement
The average cost of a new boiler is decided by a few factors:
The model
The manufacturer
The performance
The warranty
The size (output rating)
Most people will end up paying between £500 and £3,500 for their new boiler.
Furthermore, the average boiler fitting cost is decided by your local installer's labour costs, the complexity of the job and the number of person-hours needed for the installation. The average boiler replacement cost usually comes down to somewhere between £1,000 and £1,500.
Then what exactly are the average costs of a new boiler and the installation combined? That will most likely be somewhere between £1,500 and £5,000 to buy a boiler and have it installed.
However, do remember that it may be possible to cut down on the costs with a grant. In the end, the best way to find out how much it is to replace a boiler and secure the best prices is to get several comparison quotes from Gas Safe registered engineers near you.
Fortunately, we can help with this. Simply fill in our 30-second form, and we'll provide you with up to 3 quotes from certified boiler installers. Our service is free, non-binding, and has no hidden fees. Click the button below to get started.
The average cost of a new boiler in the UK is usually between £500 and £3,500. This is the cost for a new standalone boiler, but prices can go up to £6,250 with the installation costs included.
How much does replacing a boiler cost?
Replacing your boiler with a new one costs between £1,600 and £3,500 on average. The final cost will depend on your local installer’s labour rates, the complexity of the job, and how many hours it takes.
Is it worth buying a new gas boiler?
It is worth getting a new gas boiler if your boiler is over 10 years old. This is because older boilers aren’t as efficient as newer ones, which costs you more in heating bills. If your boiler is also regularly breaking down or you notice any weird smells or noises, these are also signs that you should call a heating engineer and possibly get a new boiler.
Is it cheaper to get a new boiler?
Yes and no. In case your existing boiler is old and inefficient, getting a new boiler will be cheaper than maintaining an older one. Yet, if your boiler is comparably new, repairing and maintaining it is a better option to save money.
What are the running costs of a boiler?
A boiler’s running costs largely depend on its type, fuel source and its price, projected running time etc. After you have your boiler installed, account for regular boiler maintenance and upgrade fees. This makes the boiler running cost stretch between £500 and £2,000.
Nick has a wide range of experience writing about conventional and renewable heating solutions, and is always increasing his knowledge by researching any new heating technologies on the horizon.
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