New Boiler Cost 2024 - Boiler Prices and Installation Costs

In the market for a new boiler? If so, you’ve come to the right place. Lots of different factors can influence the cost of your new boiler, and it’s important that you bear these in mind when considering your budget. From your boiler size to the brand and model you select, these will all play a role in how much you pay for your brand-new heating system.

There’s plenty of reasons why you might need a new boiler – whether your current system is over 15 years old, inefficient or simply doesn’t meet your needs anymore. Whatever the reason for your new boiler installation, you’ll find all the help and advice you need right here at Improve My Home.

Key takeaways:

• Combi-to-combi boiler installations can cost around £1,695 in 2024.

• Where you live can impact the cost of your new boiler installation.

• Aim to replace your new boiler once it becomes over 15 years old, if not before if it starts going wrong.

• Installations in the summer can be cheaper due to demand seasonality.

• Back boiler installations can take up to two days to complete, costing around £2,300 and £5,000.

How Much Does A New Boiler Cost?

New boiler costs can vary depending on the type if system you need for your property. The size and model will also affect the overall cost. In the UK, there are three main types of boilers: combi, conventional and system boilers.



Combi boilers, the most popular type of system, can cost up to £3,000 excluding installation, and up to £5,000 including installation. For conventional boilers, the system alone can cost up to £3,500, while the installation can cost up to £5,000. System boiler cost can range up to £3,500 also, and their installation can cost up to £5,000.

There are other types of installations available for some home, including electric boilers oil boilers and biomass boilers. Costs can also vary if you require a system swap, like a back boiler to combi system change. Find out more information on new boiler costs in the table below:

How Much Is A New Boiler On Its Own?

Different boilers have different costs. For example, as aforementioned, a combi boiler can cost up to £3,000 for the system alone, while conventional and system boilers can cost up to £3,500. The difference in cost is mainly due to the capacity required and the grade of boiler, i.e. value, core and premium. The lower the grade, the cheaper the system. Also, conventional and system boilers have more parts, like tanks and cylinders, and they have a higher capacity for hot water delivery. For this reason, combi boiler prices tend to be lower.

How Much Is A New Boiler When Fitted?

The cost of fitting a new boiler can also vary. This will be affected by aspects like parts and labour, with any extra work that’s required adding to the price. For example, if you want to swap systems, like from a conventional boiler to a combi, this will increase the price as this will require additional labour. Likewise, should you decide to change the location of your new boiler, this will also make costs rise. On average, combi, conventional and system and oil boilers can all cost up to £5,000 to install. Electric boiler installations tend to cost up to £4,000, while biomass boilers can cost up to £18,000 to install.



Please note, factors like the warranty length and even your geographical location can also impact the cost of your new boiler installation.

Which factors influence the cost of a new boiler?

Several factors can influence the cost of your new boiler installation. For example, the type of home you have can play a significant role, i.e. terraced, semi-detached or flat. This is likely to impact the complexity of the installation and the type of system you need altogether.

The number of bedrooms and bathrooms you have will also be taken into account, as the more rooms you have the higher your demand for heating and hot water will be. A larger home will require a larger boiler, so costs are likely to be higher. Also, as aforementioned where you live will also impact the price of your new boiler – areas of London and the Southeast of England tend to have pricier boiler installation costs.



Nevertheless, if you want an affordable deal for your new boiler installation, you’ll find the best quotes available right here at Improve My Home.

New Combi Boiler Cost

Looking for a new combi boiler? You’ll firstly need to look at the costs to find the best option for your needs and budget. Like every system, the cost of a new combi boiler can vary, with the size and complexity of the install playing a key role.

As a rule of thumb, a small/medium combi boiler of 24kW – 30kW can cost up to £2,500, before installation. A larger 32kW – 50kW boiler can cost up to £3,000 for the system alone. While a high-capacity combi boiler of 50+ kW can cost up to £3,000.



Continue reading to find out more about combi boiler prices.

Combi Boilers Explained

Combi boilers are the most popular type of boiler in the UK. Known for their compact dimensions and high efficiency, these systems are ideal for small to medium homes, but can also suit the needs of larger homes in some cases, too. These boilers are great for homes with limited space, as they don’t require any additional tanks or cylinders, they can be easily fitted into a standard kitchen cupboard. Combi boilers are designed to deliver excellent central heating and high-quality, on-demand hot water – all through one single unit. There’s a vast variety of combi boilers on the market from budget, economy and premium brands.

Combi Boilers Installation Prices Guide

The cost of installing a combi boiler into your home will depend on the system you select, as well as the complexity of the installation process. Any additional scaffolding, pipework modifications or location swaps will cause prices to rise.

For the installation of a 24kW – 30kW combi boiler, you expect to pay up to £3,600, while fitting a 32kW – 50kW combi can cost up to £4,100. A larger combi of 50kW + can cost up to £4,100.

Want to find out how much it could cost to install a combi boiler into your home? Try our free online boiler quote tool today.

How much is it to convert a conventional boiler to a combi boiler? 

Decided to swap your old conventional boiler for a more efficient and innovative combi? You’re not alone, many homeowners decide to do this due to the many benefits of getting a combi boiler installed. From the instantaneous hot water to the ample space that’s freed up.

The cost of converting from a conventional boiler to a combi is likely to be higher than a simple like-for-like system swap. This is because of the additional labour that will be required to complete the change of boiler types. In total, it can cost between £2,195 to £6,000 to swap a conventional boiler for a combi boiler.

Find out how much it could cost to replace your old convectional system with an energy-efficient new combi with our free online boiler quote tool.

Why is a conventional to combi boiler conversion more expensive than replacing a combi boiler? 

Swapping a conventional boiler for a combi boiler is more expensive that a straight-forward like-for-like replacement as the process requires more time and labour. On average, a conventional to combi boiler swap can take approximately two days to complete. In contrast, straight like-for-like swaps usually take around one day. The higher price is to account for the additional work that your installer will perform to complete the job to a high standard. The extra price is usually well worth it, as combi boilers are highly efficient and can help to lower your energy bills in the long run.   

How much is it to convert a back boiler to a combi boiler?

If you have an old back boiler installed at your property, getting a new combi boiler installed could prove to be a great move. Combi boilers are much more efficient and you could benefit from an improved quality of heating and hot water. The cost of replacing your old back boiler with a combi can range between £2,495 to £6,500.

Find out how much it could cost to replace your old back boiler with a brand new combi with our free online boiler quote tool.

Why is replacing a back boiler with a combi boiler so much more expensive? 

Again, replacing a back boiler with a combi boiler is more expensive because of the additional time and labour that is required to complete the job. You qualified installer will need to completely removal of your existing system and replace it with a system that will meet the needs of your new combi boiler. This will require pipework changes. Plus, some back boilers are placed in awkward locations and require additional work. All these factors contribute to the higher pricing. Although this is more expensive than a standard like-for-like swap, the benefits of a new and efficient combi boiler can make the higher price well worth it.

System boiler cost

Want to know how much a new system boiler could cost to install? You’ve come to the right place. System boilers are powerful and capable of delivering a high capacity of hot water and heating, so they tend to be more expensive than the average combi boiler. For a 9kW – 25kW system boiler, you can expect to pay around £2,400 for the system itself. While a 26kW – 40kW system boiler could cost up to £3,000. For a large system boiler of 40kW and over, costs can exceed £3,000.

System boilers explained

Do you live in a large home with high heating and hot water demands? If so, a system boiler could be a great option for you. These efficient systems are powerful and store hot water in an additional cylinder. This means that hot water can be delivered to multiple taps at once, unlike with combi boilers. Water is heated directly from your mains supply and sent to the radiators in your home to heat up your rooms. The heated water also fills up the cylinder for the supply which is sent to your taps, showers and baths.

Modern system boilers are highly efficient and many brands, from Worcester Bosch to Baxi, manufacture excellent system boilers for you to choose from.

System boilers installation prices guide

The cost of installing a new system boiler into your home will be more than the price of the boiler itself. This is because of the extra parts, labour and time that the process requires. For example, an installation that requires scaffolding or pipework modifications or a location change will incur additional costs.

Generally, for the installation of a system boiler of 9kW – 25kW, you can expect to pay up to £3,500. A system boiler of 26kW – 40kW can cost up to £4,100 to install. Meanwhile, systems boilers of 40kW and over can cost approximately £4,100 plus to fit.

Get a free online boiler quote today to find out how much a new system boiler installation could cost in your home.

Conventional / Regular boiler cost

If you want to get a conventional boiler installed, once again, the size, model and complexity of the installation process will play a key role to the overall costs. Like system boilers, conventional boilers are designed to have a higher capacity for heating and hot water, so they tend to be more expensive than combi boilers.



Typically, you can expect to pay up to £2,400 for a conventional boiler of 9kW – 26kW. While a system of 26kW – 40kW can cost up to £3,000 for the boiler alone. A system boiler of 40kW or over can cost around £3,000 or more.

Conventional / Regular boilers explained

Conventional boilers are the UK’s traditional form of heating. Equipped with an additional tank and cylinder for water storage, these systems can deliver hot water to multiple taps at once, making them suitable for medium to large homes with high hot water demands.

Conventional boilers are also commonly known as heat-only, open-vent and traditional boilers. Modern conventional boilers are designed to be highly efficient, and many are hydrogen ready and made for the future.

Conventional / Regular boilers installation prices guide

Like any boiler installation, the time and work it takes to fit the system will impact the overall costs. Additional labour like location changes will cause the cost of your conventional boiler to rise.

Usually, a conventional boiler of 9kW – 25kW can cost up to £3,500 to install. Meanwhile a large regular boiler of 26kW – 40kW can cost up to £4,100 to fit. The installation of a large system boiler of 40Kw or over, can cost more than £4,100 in total.

Want to find out how much it could cost to get a brand-new conventional boiler installed? Try out our free online boiler quote tool today for a personalised estimate of costs.

What are the factors that make up a full installation cost of a new boiler?

There are many factors that influence the cost a new boiler. The main considerations are the cost of the boiler itself, i.e. the brand, model and size; the time and labour required for the total installation, any extended warranty costs and any extras you choose to get like smart controls.

As well as the above, the following factors can also play a role in your new boiler costs:

• Vertical flue cost

• Plume kit cost

• Any gas pipe upgrade costs

• Boiler relocation costs

• Cost of magnetic boiler filter

• Cost of chemical flush

• Cost of Power flush

• Any new radiator costs

Find out exactly how much your new boiler could cost install with our free online boiler quote tool.

New boiler cost by boiler manufacturers 

The brand you choose for your new boiler, whether it’s a combi, regular or system, will impact the cost significantly. There is a wide variety of boiler manufacturers in the industry, from premium brands to more budget names. The more premium the brand, the more you can expect to pay.



For example, Worcester Bosch is one of the most popular boiler brands on the market, their products can even be found in His Majesty the King’s Sandringham Estate. Because of their high quality and reliable brand name, this brand’s boilers are more expensive than other budget brands like Baxi and Alpha. Worcester Bosch boilers can cost up to £3,370, while Alpha boilers can cost up to £1,246.

Check out the table below for a more comprehensive breakdown of the different boiler brands and their typical boiler prices.

New Boiler Cost by boiler installer 

Once you’ve decided which boiler you think is best suited to your home, you’ll need to select the company you’d like to install it. There are plenty of qualified boiler installers available throughout the UK, with a new wave of online-only experts providing cheaper prices and more convenient ways of buying your new boiler. Examples include Boiler Central, BOXT and Heatable. These companies are able to offer cheaper prices due to their lower overheads as a result of being all online. Nevertheless, if you prefer service from a more conventional boiler company, you can always go with brands like HomeServe, Eon or British Gas that have years of experience and are well-established in the industry – be prepared to pay a little extra though.

In the table below, we provide a detailed breakdown of some of the different boiler companies and their typical new boiler costs. 

New Boiler Cost Summary: what to do next

So, there you have it, all the information you could possibly need about buying a new boiler. The main thing to remember is that costs can vary depending on the specific needs of your property, and you should always opt for a system that can meet your demands efficiently.

The best way to get the most affordable deal for your new boiler installation is to compare boiler prices online and getting a free quote. You can do this in a matter of seconds right here with Improve My Home. Our free online quote tool can provide you with a tailored list of new boiler options and costs, recommending the best solution for your property and suggesting suitable boiler companies to conduct your installation.

Give our free online boiler quote tool a try today.

New Boiler Cost Frequently Asked Questions

How long does it take to install a new boiler?

In most cases, it can take between one to three days to complete a new boiler installation. The time it takes to fit your new system will depend on the labour required. Standard boiler replacements tend to take up to six hours in total.

How long does it take to install a conventional boiler?

A conventional boiler can between one to three days to install, depending on the complexity of the installation. The process will involve removing your old system, installing the new one and completing a chemical flush. A standard conventional boiler replacement will typically take up to six hours.

How long does it take to convert a system to a combi boiler?

Converting a system boiler to combi boiler will take longer than a standard like-for-like swap. Expect the process to take around two days in total due to the extra work that’s required, for example the removal of the hot water cylinder.

How much does a boiler replacement typically cost in the UK?

On average, it can cost between £1,500 to £3,500 to get a new boiler installed in the UK. The price will be influenced by the brand, model and size of the system you choose, as well as the complexity of the installation process. The best way to get a good price for your new boiler installation is the compare new boiler costs online.

What is the average cost of a new combi boiler including installation costs? 

On average, a new combi boiler can cost between £1,500 to £3,000 to install. The total combi boiler cost will depend on the brand, model and size you choose, along with the time and labour required for the installation.

Is getting a new combi boiler worth it? 

Yes, combi boilers are designed to be highly efficient, so they are well worth the costs. They also tend to be cheaper than other types of boilers due to their fewer parts. Combi boilers provide high-quality hot water and heating without needing any additional tanks or cylinders, so you can save space in your property too.