You are here:Home1/Boiler Guides2/New Boiler Cost – How much is a new boiler? (2024 update)
New Boiler Cost – How much is a new boiler? (2024 update)
New Boiler Cost – How much is a new boiler? (2024 update)
Witten by Bernard Morgan (Engineer). First Published: January 5, 2024. Updated: February 29, 2024
Summary: The average price for a new boiler is between £650 and £3,700 or more. The installation will cost from £1,200 to £2,000.
However, installation depends on many factors. It’ll include labour, building regulation documentation and additional hardware like filters and pipework. There are differences in costs between combi, system and regular boilers, too.
New boiler costs are a bit of a mystery to most people. There are so many variables that all boiler installations are pretty unique.
In this guide, we’ll summarise new boiler costs and go through different scenarios and additional costs. We’ve spoken to our Gas Safe engineers and taken feedback from customers so you know this is expert advice.
It is worth knowing that your gas supplier probably isn’t the best-value installer.
Even people with experience will need to research new boiler costs and different boiler models before buying a boiler. Prices change over time, so it is worth keeping up to date. All the prices and costs listed below are correct as of February 2024. They are intended as a guide only.
If you want a more accurate idea of boiler replacement cost, get an instant fixed online price. It only takes 30 seconds, and there is no obligation to buy.
New boiler price varies on many things. This includes the boiler model and type of heating system. But, just as important is how much hot water you need and how many radiators you have. Plus more variables that we’ll go through later in this guide.
There are many boilers available in the UK, including premium and budget options. A premium new combi boiler costs, for example, between £1,050 and £3,500.
System boiler prices will differ because water tanks may need to be changed or re-piped. There will also be additional costs if you convert from one boiler type to another.
Why trust Boilerhut?
We’ve been in business installing boilers nationwide since 2013. We’ve installed thousands of boilers and have an Excellent rating on Trustpilot. Our installations speak for themselves, and we’re honest with customers.
How much is a new boiler?
The table below shows rough averages for different boiler types’ costs across the UK. We’ve included boiler-only pricing and full installation costs. As discussed already, pricing is variable from company to company and highly specific to your home and requirements.
Cost – Boiler Only
Cost – Installed
£750 – £3,400
£2,050 – £4,500
Storage Combi boiler
£1,980 – £3,700
£4,000 – £5,200
£750 – £2,600
£2,200 – £4,750
£650 – £2,100
£2,200 – £4,200
£900 – £2,500
£2.300 – £5,000
Air source heat pump
£8,000 – £12,000
£13,000 – £20,000
Worcester Bosch boiler prices range from £850 for a Greenstar 1000 up to £3,000 or more for an 8000 Style 50kW.
These new boiler costs are correct as of February 2024.
If you would like a free quote to understand how much it would cost through Boilerhut, it would only take 1 minute. We offer fixed pricing throughout the UK, manufacturer-backed warranties and premium boilers and support.
Boiler replacement cost and examples
The following price examples include installation and all the additional parts and labour.
Combi to combi swap
The average combi boiler replacement cost is between £2,100 and £3,700, including VAT and installation.
A combi boiler to combi boiler swap is one of the quickest installation options. This is because the heating system is usually already set up to work with a boiler of this type.
Back boiler replacement with combi
The average back boiler to combi boiler installation cost is between £2,200 and £4,500, including VAT (fully installed).
When replacing an old back boiler, there are additional steps compared to a combi-to-combi swap. The back boiler will need to be decommissioned. It can either be left in place or removed.
Back boilers are often left in place and made safe to keep the costs down. This is done by disconnecting the gas and removing all water. The choice is yours and is something to think about.
Conversion prices – Convert to a combi or to a system boiler
The average boiler conversion cost is between £2,500 and £4,500, including VAT (fully installed).
Converting from one boiler type to another tends to be more complicated than swapping in the same type of boiler. You can expect a higher installation and new boiler price because of the work involved.
For example, a heating engineer may need to add or change copper pipes and the location of the boiler or add or remove water tanks and cylinders. All these additions add time and cost to a boiler installation.
Any boiler brand can be fitted in most situations as long as the power output is right for your hot water and heating requirements.
System boiler swap
The average system boiler swap will cost between £1,600 and £3,000, including VAT. This includes full installation.
If you have a system boiler and want a new one installed, the complications will be reduced compared to a conversion. You will already have a hot water tank or cylinder, but it is worth discussing if it needs upgrading. If it is as old as your boiler it may be very inefficient, leaking heat and costing you a lot of money.
Pipework and gas pipes are likely to remain the same unless the boiler is old and you need a new 22mm gas supply to the boiler. This is a building regulation requirement.
Like with all the other examples, there are a few factors that affect price. Some examples are the boiler itself, location, whether it is being moved, and additional filters and pumps.
The average oil boiler installation will cost between £2,200 and £5,100, including VAT, fully installed.
Oil boilers are common for homes not connected to the main gas network. They work in the same way as gas and LPG boilers, except they burn oil. The main differences come in the setup of the boiler and heating system.
You will need an oil tank to store oil, and most common oil boiler brands come in an internal and external model. This is great if you want to save room inside your home and have the right space outside.
It’s also worth noting that you must organise oil deliveries when your tank gets low. It tends to be more expensive than gas because a tanker must come to your home and spend time unloading the oil. Read more about oil boiler installation here >
Electric boiler cost
The average electric boiler installation will cost between £2,100 and £4,200, including VAT and fully installed.
Like other fueled types, electric boilers come in combi, system and conventional types. They use electricity to heat your home and hot water. There are positives and negatives with electric boilers, however.
Three positives are no local carbon emissions, no gas supply pipe through (or around) your home, and they can be quiet.
A few negatives are that electricity costs 3-4 times as much as gas (as of January 2024), and you will most likely require a three-phase electricity supply. Gas-powered power stations produce a lot of electricity in the UK. This means there are emissions when heating your home and water. This all adds to the costs associated with installation and use.
Solar panels can help an electric boiler, but you will use your boiler most in the winter when solar panels produce the least electricity. Running an electric boiler could cost you 2-4 times that of a natural gas boiler.
What can affect new boiler costs?
There are a few things to consider when looking at the cost of a new boiler. This is so you don’t get charges and costs you aren’t aware of. We’ve listed a few of them below, but every home is different, so there may be extra bits not included below.
A good place to start is with fuel type. If your home is connected to the mains gas supply then you have access to the cheapest fuel available to you at the moment (as of January 2024). If you aren’t, you will need to determine which option is best for you.
Most natural gas boilers can be converted to LPG with a conversion kit or a setting change. So, if you don’t have a gas connection and want to keep the initial price down, an LPG boiler is a good choice. Conversion kits tend to cost £50-£300, whereas an oil boiler can cost £300-£800 more than the equivalent gas and LPG boiler.
Boiler type and associated installation
The boiler you choose will have the biggest bearing on the cost. There are three main types of boilers available in the UK. Combi, system and regular (also known as conventional or heat-only). There is also a type of combi boiler called a storage combi, which is gaining popularity.
The new boiler costs for each of these types of boiler are (boiler only, not including installation, average cost):
Combi boiler – £750 to £3,400
Storage combi boiler – £2,000 to £3,700
System boiler – £750 to £2,600
Regular boiler – £650 to £2,100
Combi boilers tend to be the most complicated boiler as they have more internal components. This is why they cost more than the others, on average. The price ranges are quite large as we’ve considered budget and premium boilers.
Choosing the correct boiler size and power, measured in kW, is essential. Combi boilers will need to be powered on the number of bathrooms you have. System and regular boilers will need to be sized based on the number of radiators.
There are cheap boilers with short warranties. Or premium brands with 10 to 12-year warranties. We’ve partnered with Viessmann to offer full manufacturer-backed warranties of 10 to 12 years.
The type of boiler you’ve chosen will also dictate labour cost. For example, a combi swap will be relatively easy and can be completed in one day. Replacing a back boiler with a system boiler will be much more labour-intensive. There is a hot water tank to consider, along with extra pipes.
Size of your home
As already discussed, the size of your home is one of the main things to consider when picking a new boiler. If you have a small to medium-sized home, a combi boiler may be the best option. They may be more expensive to install, but they don’t need a hot water tank and won’t heat a tank of water twice a day.
The main consideration for a combi boiler is how many showers and hot taps you have, and how many might be used at the same time. As a combi boiler heats hot water on demand it needs to be powerful enough to heat all the water needed at one time. Your incoming cold water mains will also limit the amount of hot water a combi boiler can produce.
With a system and regular boiler, the water is heated up and stored, not heated on demand. This means the system can produce more hot water than a combi boiler, but it can run out.
Large homes could consider storage combi, system or regular boilers. Depending on which you choose will dictate the price, installation complexity, timescales and more. If this is all a bit overwhelming, and we know it can be, get an online quote with us. The online tool will ask you specific questions and give you different quote options to compare.
The new boiler’s location will also have a bearing on the cost of the installation. Generally, it’s cheaper to keep your boiler in the same location as the one that is being removed. This reduces potential changes to water and gas pipework.
Boiler relocation costs will add to your quote. For example, new pipework must be added for both water and gas. It will also take the engineer longer to install, adding half a day to the work.
Additional cost: £100 to £1,000
Additional warranties often cost more. This is because they rely on specially trained engineers to install boilers. They may also need additional equipment and hardware to ensure the boiler has the best chance of lasting the warranty length.
Another consideration is if the warranty is a manufacturer warranty or not. Some companies will offer a ’10-year warranty’ but it’s not exactly right. They will give you the manufacturer standard (e.g.) 5-year warranty and then top-up the additional 5 years. This is fine, if the company will be around for at least the next 10 years.
At Boilerhut, we include this extra hardware (filters, etc) as part of the installation cost. What we quote is what we charge. We’ve been installing boilers since 2013 and only offer manufacturer warranties. So, for example, a 12-year Viessmann warranty on a Vitodens 100-W isn’t dependent on Boilerhut.
If you need a new boiler, it’s a good idea to look at your whole heating system, including the radiators. They do last a long time. But they can also rust and degrade, causing issues with your boiler and, if leaking, flooring and walls. Or they could be inefficient.
A new double-pannel radiator could save you money and heat your room more efficiently. Boilerhut can change or add new radiators as part of a new boiler installation. They include TRVs and are great value. Several different radiators are available, so if you need a specific type, size or design, just let us know.
Magnetic and hardwater filters
Magnetic filters help catch magnetite sludge that circulates around your heating system. This sludge usually sits at the bottom of your radiators. But it can move with the water, causing damage to your radiators and boiler. These filters are fitted onto your heating pipework by the boiler.
Reduced energy bills
Drastic improvement to your boiler’s efficiency
Reduced likelihood of frequent/expensive repairs
Extension of boiler’s lifespan
Reduction of carbon footprint
Our guide, are magnetic filters worth it, goes through more details. They cost between £100 and £300 depending on the model. We install magnetic filters as standard, and they are included in the new boiler cost.
If you live in a hardwater area we will install a limescale filter. These are also added as part of the cost of the new boiler installation price. If there’s a build-up of limescale in your system, the water flow becomes restricted. When this occurs, the temperature of the boiler’s internal heat exchanger will increase. If it gets hot enough, the water starts to boil. This causes ‘kettling’, bubbling noises in your boiler.
Advanced flush/chemical flush
A flush is the process of pumping water and chemicals around your heating system to clean it out. The most common type of flush is the chemical flush. We include a mains-pressure chemical flush as part of the new boiler cost. Boiler manufacturers will often require them to ensure the boiler has the best chance of running for the longest time.
Power flushes are also available. These can cost upwards of £400 but aren’t always required. It’s worth noting that these are done under pressure and could cause problems with an older heating system.
What is a chemical flush?
Chemical flushes break down and disperse the sludge that builds over time. With a strong flush and added inhibitor, your system gets a much-needed clean to improve its lifespan and quality.
What is an advanced, power flush?
An advanced flush is a similar process but includes using a machine to help push the sludge out of the system. The machine has a pump and attaches to your heating system. It sends powerful chemicals through your pipework at high pressure.
Upgraded heating controls
Having a high-quality thermostat is vital for allowing full control over central heating systems.
Modern thermostats are becoming advanced in their capabilities. Examples include WiFi-enabled learning thermostat controls such as the Tado or Viessmann Vitotrol 100-E. These controls will adapt to the heating and hot water needs of your household. It helps save you money on your energy bills.
Cost of a basic thermostat: From £50. Included with all new boilers with Boilerhut. Cost of a WiFi-enabled learning smart thermostat control: £150 to £300
If your gas pipework needs to be upgraded to meet Gas Safe regulations, it will need to be replaced and upgraded to a 22mm supply pipe from the meter to the boiler. This adds to the overall new boiler installation cost.
Speaking with an expert about your new boiler is the best way to determine whether you require a gas upgrade.
Cost: £40 – £500
New boiler flue pipe
In most properties, it’s common for a boiler’s flue to exit the building horizontally out of the wall. This type of flue is included in the new boiler cost with Boilerhut.
For some, the flue must be redirected to exit your property vertically, through the roof. This process will incur further costs. This is because of labour and the materials required.
In addition, flues need to be a certain distance away from opening windows and doors. If this can’t be achieved a plume kit will extend the flue. The plume kit will connect to the flue and rise up and away from opening windows and doors. These can cost anywhere from £75 to £180 depending on the length required and lengths available.
Modern boilers are all condensing boilers. This is an acidic water that is created by the boiler that needs to be expelled. You may need a condensate pump if your boiler is in an airing cupboard. This will push the condensate to a soil stack or downpipe across to a different part of the property. This will be necessary to ensure your new boiler complies with current boiler and flue regulations.
Cost: £150 to £500
There may be occasions where hiring scaffolding is required. If your installer is experienced, they’ll inform you of this before starting the work. Scaffolding is normally required for flats on or above the 3rd floor as ladders can’t be used due to health and safety concerns.
Scaffolding: £400 to £2,000
Where you live
Where you live can have quite an impact on new boiler costs. Gas Safe registered engineers based in London or other cities may charge more. In general, they have higher costs, including staffing, rent, congestion or ULEZ charges.
Boilerhut is based in Cardiff and works nationwide. In most cases, we don’t increase or inflate new boiler costs for cities. Our pricing is standard across the UK. Get your no-obligation quote today >
What’s included in a boiler installation, swap or replacement?
The quote process is very simple with Boilerhut. You get an online quote and we’ll call you back to get all the finer details. We don’t need to come to your home unless you buy through us. Our surveys are all done on the phone.
This is why we can install boilers in 24 hours – we don’t mess with on-site surveys until the day of the installation.
Once you are happy with the quote, and we’re ready to go, this is what you’ll get:
The new boiler
Removal of the old boiler
Removal of tanks and cylinders if required and possible (some are asbestos so can’t be removed by us)
A flue, either horizontal or vertical
Microbubble deaerator – if needed. Removes micro-bubbles and air in your heating system, reducing noise and corrosion. It also increases efficiency.
Limescale filter -if needed.
A Boiler Plus-compliant programmable thermostat or an internet-enabled learning thermostat
Chemical flush & inhibitor
Associated copper pipework
2-year workmanship warranty
Commissioning of the boiler and benchmarking
Building regulation notification with certification, including landlord certificates
Handover and induction of the boiler and controls
Plus, if you buy a Viessmann boiler, we can remotely check it for ten years or more. This often allows us to fix issues from our office within minutes. Why wait for a visit if one isn’t needed?
What is a conversion, and what’s involved?
Converting from one type of boiler to another can add costs to a new boiler installation. It will depend on two things: 1) what type of boiler you are replacing and 2) where the new boiler is going.
If you are changing from a regular or system boiler to a combi boiler, then the conversion is relatively simple. This is because you are going from a more complicated setup to a simpler setup. A combi boiler does all the work, and no tank is required. Therefore, all pipework must lead to and from the boiler.
If you are changing from a combi boiler to a system boiler, the engineer will need to make runs of pipes from the boiler to the hot water cylinder. This will take longer than doing it the other way around. You will also need a location for a hot water cylinder.
There are added considerations if you are changing from an old back boiler. Do you want to keep the old boiler in place or remove it? The most common scenario is leaving it in place, decommissioning it, and ensuring it is safe.
Moving a boiler can be a complicated job, but nothing is impossible. There will be more pipework to run, water and gas. The condensate will need to be added and flow into a downpipe or drain, too.
Once you have a quote with Boilerhut, we will discuss all the options and ensure the quote is correct. We don’t like hidden costs for customers.
When should I replace my boiler?
The main consideration of replacing a boiler is whether it works. If it isn’t working, you’ll need to replace it.
If it isn’t a condensing boiler, you should consider upgrading to a modern condensing boiler. If your boiler doesn’t condense, it will be over 17 years old. The efficiency of that boiler will be around 70%. A new boiler can be up to 98% efficient.
It will save you a lot on your energy bills, and they are less likely to break down. Plus, even if it did break down, a new premium boiler will come with a 10 or 12-year warranty, meaning you won’t have to pay for repairs.
If you have had to have your boiler repaired recently (not including servicing), then it could break down more frequently. Eventually, old boilers will be impossible to fix as parts become rarer. When you take into account the warranty and energy savings, it could be worth upgrading sooner rather than later.
Another consideration is you. Do you need a more powerful boiler? Do you need more hot water or more radiators in your home? If so, your current boiler may struggle to provide you with what you need.
When is the best time to replace a boiler?
If your boiler is working ok but you know you need a new one, the best time to replace it would be the summer. This is because you won’t feel the effect of not having heating quite so much. The hot water may be another issue. But, most combi boiler installations take one day.
If you need a boiler right now because yours has broken down, get a quote and choose the ‘immediate’ option at the end of the questions. We’ll get back to you as soon as we can and start the process. In some circumstances, we can often fit and install a new boiler the next day and over weekends.
At Boilerhut, we try and look after our customers. We will do everything possible to install boilers as soon as possible in emergencies. We can ask other customers if they’re happy to wait an extra day to free up engineers’ schedules if they’re not urgent.
We do not charge extra for emergency boiler replacements unless there is a specific reason. The most common being working on a Sunday may incur a small extra labour fee.
Post-installation boiler costs
When considering how much is a new boiler, you need to think past installation. You also have to consider the day-to-day running costs and annual servicing.
Expected running costs
At Boilerhut, we install highly efficient boilers that save you money on your monthly heating bill. Below, we have listed the current average spend on gas in the UK. It’s worth noting these costs are for gas, not specifically for heating only.
British Gas [view webpage](average annual cost of gas – January 2024)
Flat/1-bedroom house – £713.19
3-bedroom house/flat – 1,025.48
5-bedroom house – £1,453.89
As these are average, yours may be different from these. However, it’s good to understand the average.
Getting a new boiler serviced annually is vital. Not only will it ensure your boiler works for years, but it will keep your warranty valid.
Servicing costs vary across the UK, from £80 to £180.
When installing a Viessmann Vitodens boiler, we recommend using us to service your boiler. We work closely with Viessmann and will organise a Viessmann engineer to come and service the boiler for you.
We can get this service for cheaper than you going to Viessmann direct. But the main reason to use Viessmann engineers is that when a manufacturer is looking after its own boiler it will be looked after properly.
We have had a few customers not use us for servicing. This isn’t an issue, but if your local engineer doesn’t know how to look after your specific boiler it may break down sooner than it should. This would result in having to pay extra to fix it and reinstate your warranty.
Payment options and finance
New boilers are not cheap. But they are required. There are a number of ways you can buy a new boiler with Boilerhut.
Pay upfront – Pay for your boiler upfront on a credit or debit card. We don’t charge extras for credit cards (sorry, we don’t accept AMEX).
To summarise, the cost of a new boiler will vary depending on your requirements, the boiler, your home and the fuel being used. We suggest getting quotes from a couple of companies and speaking to them to get the best price and service.
If you need a new or replacement boiler or are looking at having a central heating system installed, get an online quote (it takes less than 1 minute), and you’ll get an instant price. But why choose Boilerhut:
‘Excellent’ 5* customer satisfaction on Trustpilot.
Fixed & final prices. No hidden extras.
Get up to three quotes for different-tier boilers.
Monthly payment plans for annual servicing.
Frequently asked questions
How long does installation take?
In general, it should take no longer than 2 days to install a new boiler. However, if you are having new radiators fitted around the home as well this can extend installation to 4 days.
Why are boilers expensive?
Boilers are complicated machines that need to take high stresses from heat and running water. Some models are designed more cheaply than others, so they won’t last as long. We try to work with Viessmann boilers as often as possible. They offer a minimum of 10-year warranties with premium components, high efficiency and great customer service.