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How Much Does A New Boiler Cost?

One of the most important and expensive improvements or replacements you can make to your home is your boiler

A boiler acts as the heart of your home, pumping hot water around your central heating system and providing hot water to baths, showers, and taps throughout the house.

If you are moving into a new home that needs work done, looking to upgrade your existing one, or have had issues with your current system, you might be considering getting a replacement boiler.

This guide will tell you everything you need to know before booking a boiler installation, including the average costs, the different types of boiler systems, and other factors that might impact the price you pay.

A new boiler is a big financial commitment. 

You’ll need to make sure the system is the right fit for your home and can provide you and your family with the warmth and hot water that’s needed.

All modern boilers have to be A-rated for efficiency, meaning they are as efficient as possible. 

And let’s not forget that there are many different options these days for replacing the heat source in your home: Heat pumps use both ground and air source, electric boilers coupled with solar power can be a great option, and there are biomass boilers too. 

However, although these green alternatives can be a great choice for some, they’re not the best option for every home and whilst you may save money in the long-term with these green alternatives, many homes aren’t able to fund the large upfront costs, or it just doesn’t make financial sense.

In this case, the best option would be to replace your existing boiler with a new, energy-efficient one. 

This guide will hopefully highlight the affordability of gas boilers and inform you that most these days are actually hydrogen ready, something that is one of the main solutions for a mass changeover from natural gas, making us as a country more efficient and greener. 

Keep reading for everything you need to know about boiler installation costs in the UK and how BOXT can help.

Do I Need A New Boiler?

On average, a boiler should last between ten and fifteen years

This will depend on several factors, including what type of boiler it is, the make and model, how often it is used, and how well it is maintained.

Having your boiler regularly serviced is a great way to prolong its life. An annual boiler service will allow a boiler engineer to check for minor problems that could lead to bigger issues down the line so that you can deal with them quickly. 

A service also gives the engineer an opportunity to clean the system.

If you are experiencing problems with your boiler and regularly have to call someone out to undertake repairs, it might be time to consider getting a new one.

The heating engineer that attends should be able to advise whether any repairs that can be made are stop-gap measures or if they can completely resolve an issue. Continual callouts and repairs can be as costly or even more expensive than replacement in the long run.

On the other hand, you might just be concerned about how efficiently your current boiler is running, especially if you’ve moved into a new property and are conscious of the increasing energy costs at the moment. 

If the performance is poor and takes too long to heat water or doesn't heat sufficiently to meet your needs, you will need to replace the boiler.

A boiler with poor performance will inconvenience you and your family. In addition to the poor heat output, it will likely use energy inefficiently, leading to higher energy bills.

Another reason to replace a boiler is because of the current location of the old boiler. Relocating a boiler can free up storage space and make areas of your home seem more livable and welcoming.

Benefits Of Getting A New Boiler

It might seem obvious, but investing in a new boiler will benefit the homeowner in a number of ways. 

Here are some of the biggest benefits you will be able to enjoy when you get a new boiler installed: 

Greater efficiency

All new boilers have specific ratings they must meet in order to be able to be manufactured and sold in the UK. They are all A-rated for efficiency, and most are now Hydrogen ready.

The efficiency increase can come from many different areas, including the type of boiler and the modern technology within the boiler itself. 

Now consider how much more efficient a brand new boiler will be when you factor in the new technology and developments that boiler manufacturers have implemented since the installation of your old boiler. 

Reduced heating bills 

If a combi boiler is suitable for your property, these are great for efficiency due to not needing to store hot water, which may go to waste. A more efficient boiler system will significantly reduce energy wastage, which will help to reduce heating bills. 


Older systems have to work harder to produce the same heat, and some won't even be able to reach the levels of new boilers. This puts a bigger strain on the old system, causing issues and higher energy bills.

A quieter boiler system

As your older boiler struggles to produce the heat needed for your home and taps, it can get noisy. This can be annoying, especially if it is in a location in your home that is regularly used, like a kitchen or bedroom.

Noise is a form of energy. The noisier the system, the more wasted energy there is. This will admittedly be minor, but it is an indicator that something is wrong. 

New boilers will be considerably quieter than an older system, making your home feel more relaxed when the boiler is in use.

More space

Many older boilers are pretty large and need a good-sized space or unit to house them. 

System dependent, some boilers also need a water tank to store the hot water. This requires space not just for the boiler but a tank, usually in the airing cupboard and the loft. 

In some cases of converting the system to a combi boiler, these tanks can be removed. However, it's important to bear in mind combi boilers aren’t suitable for every home. 

Better temperature control

While older boilers have thermostats to help you regulate your home's temperature, they are not as accurate as modern boilers. 

Smart thermostat systems can be set up to regulate your home's temperature using a control panel remotely. You can even use apps on mobile devices for some makes and models of boiler, and the system will be much more accurate.

Being able to control your boiler at the touch of a button, no matter where you are, and knowing the system will accurately deliver the desired temperature will help you manage your energy use.

The ability to monitor energy use in real-time lets you see how different actions can affect energy bills, allowing you to take measures to manage this.

Increased property value

Having a new boiler in place is an excellent selling point as prospective new buyers will not have to worry about impending boiler costs. As well as being an excellent incentive for people viewing homes, replacing a boiler that is over 10 years old can also increase the property value by an estimated 4%.

Energy ratings are a big part of the property market now. Energy ratings let people know how efficient your home is by looking at factors such as the heating system and insulation.

Homes with good insulation and newer heating systems will use less energy to heat the house, and less heat loss will occur, resulting in lower energy bills.

The better the energy rating your home has, the more attractive it will be to prospective new buyers who will not need to worry about the cost of a new boiler, replacing windows, and properly insulating the home.

How Much Will A New Boiler Cost?

The biggest obstacle for homeowners looking to replace their boiler system is the cost. 

It can be an expensive purchase, so people often look to push their old one as far as possible before getting a new one.

This section will look at average boiler prices to help give you an idea of how much your boiler replacement might cost. 

Prices will vary between boiler type, brand, and model, so the prices mentioned below are UK averages to guide you. 

At BOXT, we have worked from day one to look at our price points to make sure that we flip boiler pricing within the industry on its head. Not only did we reimagine how you order your boiler online with tech support from industry Gas Safe engineers in house, but we also make sure we are only charging you what we need to. 

We have streamlined the process so much, including not having a fleet of salesmen and innovating our back end processes that we pass those savings straight on to you. And we’re so confident that we can offer you the best price, our Price Promise means we’ll match any like-for-like quote, or give you a £50 Amazon voucher if we can’t match it. 

Combi boiler

Combi boilers are the UK's most popular boiler choice because they are efficient, compact, and affordable. 

Here is all the information you will need to decide whether a combi boiler is the right choice for your home. For a more accurate price, take a look at our guide to combi boilers prices

Combi boiler cost

New boiler costs will vary depending on the size of the home and the system needed to heat it efficiently, the brand of the boiler, and the model, but on average, a new combi boiler costs between £1,500 and £3,500 including installation.

Combi boiler running costs

Combi boiler running costs will vary depending on your energy tariff and the type of fuel used to generate the heat in your boiler.

Energy prices can fluctuate, and finding the best energy deal for you is important in reducing your heating bills.

The cost of running your combi boiler will also depend on how often it is used. That being said, there are different things to consider regarding how much running a combi boiler costs.

Looking at the average cost of running a gas combi boiler in the UK in 2022, you could expect to pay somewhere in the region of £636. This is for a three-bedroom house with four occupants, and larger homes should expect to pay more.

The cost of running an electric combi boiler in a three-bedroom house in 2022 would work out at around £1,745. This is considerably higher than the cost of running a gas combi boiler.

System boilers

Combi boilers are a great option, but they are not always suitable for larger homes or buildings with a greater demand for hot water and heating. In this case, a system boiler may be the best option.

System boiler cost

The cost of a new system boiler will vary depending on a number of factors, including the size of the boiler and the brand, model, and even the length of its warranty.

On average, you could expect to pay anywhere between £2000 - £2500 

Standard (conventional) boiler

Like a system boiler, a standard boiler can be a great way to produce heat and high volumes of hot water. This is advisable for larger homes that require a dedicated central heating system.

Standard boiler cost

While they are not as common as they used to be, you can still buy a new standard boiler and expect to pay between  £2000 and £3000 for a typical model. Prices will vary between brands and models, and larger boilers will be more expensive.

To get an accurate price for your home, our find a boiler tool will help you find the right boiler for you.

Biomass boiler

As energy costs in the UK continue to rise, some homeowners might be interested in alternatives to traditional fuel boilers.

Most boilers generate heat using mains fed natural gas, LPG or electricity. Biomass offers an alternative to these by using pellets that can be more economically sourced and burnt to generate the power you need in your home.

What is a biomass boiler?

A biomass boiler is a boiler system fuelled by organic matter. This renewable source is seen as more sustainable than gas or other fuels in the long term.

How does a biomass boiler work?

Biomass boilers work like other home boiler systems, the main difference being the way the water is heated. Rather than a gas flame or electric filament and heat exchanger, biomass boilers heat water by burning biomass fuel like wood chips, pellets, or logs.

This process can be done by hand, or some systems can be automated. One of the benefits of this system is how little maintenance the boiler will need compared to traditional boilers.

While regular maintenance and servicing are still recommended to help avoid issues, the only thing you might need to concern yourself with is removing the ash generated by burning the biomass fuel.

Biomass boiler costs

The cost of a biomass boiler can vary depending on the size, make, and model, but on average, you could expect to pay between £7,000 and £15,000.

Biomass boiler running costs

Smaller homes will require between two and three tons of biomass fuel to heat the house for a year, and larger homes might need five.

The cost of biomass fuel per tonne runs at around £60 for wood chips, £100 for logs, or £200 to £250 for pellets.

That takes the total annual running cost to between £120 and £1,250, depending on the fuel type used and the size of the home. 

There are other ways to reduce the cost of installing a new boiler or heating your home. Though the RHI (Renewable Heat Incentive), which subsidised homes that use renewable heating systems like biomass boilers, heat pumps, or solar water heating, ended in early 2022, there are still schemes.

The Boiler Upgrade Scheme, which had a start date of April 2022, provides grants in the form of a voucher to offset some of the upfront costs of installing renewable heating systems.                             

Anyone living in rural areas can apply for as much as £5,000 for biomass boilers.

New Boiler Installation Costs

Boilers installation costs will vary depending on a number of factors, including the complexity of the job, the system that is being installed, and even your location.

At BOXT, we will ask you a series of simple questions to create a comprehensive overview of your property and its demands on the heating system and boiler. All jobs are checked by our technical department that review photos of your installation once you have purchased. This will ensure the costs are accurate and help uphold the fixed price quote for what work is needed. 

Why not get a competitive quote from BOXT today? All of our new boilers come with a fixed price, and installation is included as standard. There are no hidden costs with us.

Other Factors To Consider When Installing A New Boiler

Installing a boiler can be a simple process, with some boilers being easily connected to existing systems, but you should not take it for granted that there won't be complications.

Booking a boiler installation with BOXT lets you easily travel through the simple online journey to give us information about your current boiler and central heating system and the type of boiler you would like to replace. 

Our experts are on hand via Live Chat if you have any questions along the way. This allows us to provide you with a fixed price to protect you against hidden costs or nasty surprises.

Here are some of the most important things to consider when getting a new boiler installed that might affect installation costs.

Your existing boiler system

If you are looking to install a like-for-like boiler, it is unlikely that the engineer will have to make any huge changes. 

However, if you plan to replace your boiler with a completely different system, this will likely be a bigger job and require longer installation, meaning it will cost more.

New boiler system type, make, and model

Depending on the new boiler, it may have new features or require installation that differed from the previous model. Your installer should be able to advise of any issues when they assess the work that needs to be carried out, having assessed the type of boiler you’re replacing your old one with.

How complex the installation is

Some boilers, such as combi boilers, are easier to install than others and shouldn't require too much work. Installing other types, such as conventional boilers, is more complex and can take longer for the engineer to carry out the work.

Moving the boiler

Moving a boiler will require engineering work on the pipes in your home. This will increase boiler installation costs and the time to complete the work needed.

Low Emission Heating Options

While heating a home and having quick and easy access to hot water is a priority for homeowners, reducing energy bills, increasing efficiency, and being more environmentally friendly are also important.

As the UK government makes efforts to reduce carbon emissions, grants and schemes have been introduced to encourage homeowners to explore more energy-efficient and renewable energy options.

Biomass boilers are one option that is fueled by a renewable source, and here are some of the other options available to UK homeowners that are looking for greener ways for home heating.

Hydrogen-ready combi boilers

Most people will not want to move too far from a typical boiler system as it is proven to provide the heat needed for UK homes and can often be the only option for many property types in the country - even though they’re aware of the government’s goal to go green. 

Hydrogen-ready combi boilers are currently on the market and work using traditional fuel but can also be converted to run on hydrogen.

Plans are to switch from natural gas to hydrogen gas as a more environmentally friendly alternative, and the first stage of this plan is to introduce a hydrogen blend of 20% to the gas supply before switching to 100% eventually.

Hydrogen ready boilers will be equipped to deal with all stages of this plan and run as normal.

This is happening because of the CO2 produced by burning fossil fuels such as natural gas. The only by-product you will get by burning hydrogen is water.  

Converting the supply in stages allows people to upgrade their boiler systems gradually.

Ground source heat hump

Homeowners looking for a completely renewable energy source to heat their home might consider a ground source heat pump.

Ground source heat pumps use the natural heat of the earth to warm your home. Just a few metres below the surface of the earth, temperatures of between 10°C and 15°C can be harnessed.

Heat is gathered from the ground by burying a network of pipes known as a ground loop. This can be done either vertically or horizontally, depending on the size of the homeowner's property.

Horizontal ground source pumps can need between 600 and 1200 square metres of space to be clear of buildings and trees. Vertical ground source heat pumps can go to depths of up to 100 metres.

The cost varies between the two techniques, with vertical ground source pump installation being more expensive due to the need for boring equipment to reach the necessary depths.

A mixture of anti-freeze and water is then pumped through the ground loop, absorbing the heat stored below the ground. Before the mixture passes through the heat exchanger, it is compressed to increase the temperature.

The heat exchanger then heats the water pumped around the home's central heating system and is stored in hot water cylinders for use in taps, showers, and baths.

The heat generated will not be as strong as that produced by a boiler, so homes must be efficient and properly insulated. They work better with large radiators or underground heating that stays on for longer, gradually heating the home.

The cost of installing ground source heat pumps can vary depending on the size and type of pump installed. On average, it can cost between £13,000 to £35,000.

Air source heat pump

Air source heat pumps work in a similar way to ground source heat pumps; only they gather their heat from the air outside. This might be surprising to many in the UK who think it isn't warm enough, but they can work in temperatures as low as -10ºC.

The network of tubes is set up in a unit outside your home, and the air blows over them, heating the refrigerant inside and turning it into a gas from liquid.

The system then compresses the gas to increase pressure and heat. The gas then enters the heat exchanger surrounded by water or air, which heats up and is passed around the home's heating system.

Like a ground source heat pump, this system suits a home with underfloor heating that is well insulated.

The installation costs of this system vary from £5,000 to £10,000. You might see your costs spiral if you need to upgrade your home's energy efficiency with insulation and double glazed windows.

Solar thermal energy

Solar thermal energy is a great way to heat the water in your home for free. This is done by installing solar thermal panels. These panels differ from solar panels that are used to generate electricity.

Having enough space that gets direct sunlight for the majority of the day is essential. You will also need a compatible boiler that has a hot water tank.

Solar water heaters won't replace a boiler system but can generate a good amount of hot water, reducing your energy bills.

Solar thermal energy costs typically vary between £4,000 and £5,000. 

However, it is worth checking what grants or schemes are available, such as the Green Homes Government Grant. The government is keen to promote renewable energy options, so there are usually options available for homeowners to explore.

BOXT Boilers And Installation Services

Here at BOXT, we will always offer you a fixed price for your boiler installation from start to finish. You will be able to choose from a range of boilers that have A-ratings for efficiency.

If you are in a hurry after a boiler breakdown, you can order by 4pm for next-day installation. You will be able to pay in full, enjoy 0% finance over 12 and 24-month payment plans, or spread the payment over a five or 10-year plan with no deposit at just 10.9% APR.

You will have peace of mind knowing that our fixed price installation services are among the best price on the market with our price promise. If you can find a like-for-like quote that beats ours, we will give you a £50 Amazon voucher.

All of our engineers are Gas Safe registered and are experienced in installing all kinds of boilers. The work we carry out will be arranged for a time that is convenient for you, and this can even be within 24 hours, subject to availability.

Our engineers will ensure the surrounding area is kept clean during the installation, and we will remove all the packaging and waste after completing a boiler replacement or installation.

Our service is quick and easy, and you won't need a salesperson to visit your home before installation.

Smart home devices are also available with free fitting and set up during boiler installation.

As well as peace of mind knowing you will be getting a good price and won't have to deal with salespeople trying to sell you more expensive systems that don't suit your home, you will have peace of mind with up to a 10-year manufacturers warranty.

Get in touch with BOXT today to find out how we can help with your new boiler installation with our simple, hassle-free service.

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