How much does a new boiler cost in 2020? (with Installation Cost & Prices)

new boiler cost

This is the ultimate guide on new boiler costs in 2020

If your came here looking for a new boiler and to find out average costs of a boiler, then this guide on new boiler costs gives you every option and price you will ever need.

2020 boiler

You could however use our online pricing calculator that gives you the cost of a new boiler by asking 9 simple questions about your home.

new boiler cost

In this guide on the costs of new boilers in 2020, we will reveal everything you need to know about acquiring a new boiler, boiler prices and boiler replacement.

viessmann boiler costs

There are a lot of benefits associated with getting a new boiler

However, a lot of people overlook these benefits because they are worried about the cost of a new boiler.

Let’s look at some of the most common questions we get asked before we look into more details associated with replacing your existing boiler.

Watch our quick video on how much a new boiler costs in 2020:

New boiler replacement costs FAQ’s

How much does a new boiler cost to replace in the UK?

worcester bosch 8000
  • Combi to combi swap – Average price £1,899
  • System to combi conversion – Average price £2,499
  • New boiler install – Average price £2,899
  • Back boiler to combi – Average price £3,299
  • System to system – Average price £1,999
  • Megaflo unvented boiler – Average price £2,499

Please note that it is now illegal to install back boilers therefore they can not be replaced. The only option is to convert to a new combi boiler, system boiler or regular boiler.

New Boiler Costs UK

Combi boilers and system boilers cost between £650 – £900 for a budget boiler, £900 – £1,300 for a mid-range boiler and £1,300 to £2,500 for a premium brand boiler. Heat only boilers cost between £600 – £1700 model dependent. Prices exclude installation costs by a Gas Safe Installer.

Is British Gas boiler installation expensive?

Answer: Yes compared to the average cost for new boiler replacement, British Gas are known to be around £1,000 more expensive than most of the competitors.

Many customers think that British Gas are owned by the Government and will get a better service, but in fact, it only takes about 20 seconds to find how bad they are on

They are rated 1.4 out of 5 from 678 reviews. Do we need to say any more? That’s poor for any company, never-mind a boiler installation business!

How long should a new boiler last?

15 year warranty

Answer: A new boiler that’s purchased from 2020 onwards should last at least 10 years, but with an expected life of 10 to 15 years at a high efficiency.

However it must be said that in 10 years time, there will most likely be even more economical ways to heat your home therefore may be an idea to swap to something that kicks out less carbon emissions.

If you have any specific questions please let us know and we will do our best to update this article to help others who are looking into the cost of boiler replacement.

new boiler cost

Some benefits that outweigh the price of a new boiler

best combi boiler 2020

You will typically find that you will make your money back in terms of the efficiency savings that you will make by getting a new boiler.

A new A-Rated boiler will maybe set you back on average £2,000 (this is a very average price range and varies so much on the type of home and boiler required)

The Energy Saving Trust state that by getting a new A-Rated boiler you can save up to £340 per year. Over 10 years that will pay back the cost outlay of your new boiler.

That doesn’t sound too bad does it?

Nevertheless, you will obviously want to know how much money you are going to need to save to purchase a new boiler.

Last year, boiler breakdowns cost the UK £787 million which is quite staggering.

However, the trouble is that people think boilers are too expensive so they keep running them, getting them fixed and spend hundreds or thousands on repairing them.

If you shop around, you will find that boiler replacement costs can vary considerably and are much cheaper than you first thought.

So, how much does a new boiler cost in 2020?

best boilers 2020

Research shows that the highest price for a boiler in the UK was £7,764 and the lowest was £1,500.

This shows why it is important to search around for the best boiler prices for your home as the price varies so much.

There is also a difference for the installation costs and also the type of boiler you require, such as a combi, system or regular heat only.

new boiler costs

This highlights why you need to search with care to find the best boiler prices.

If you are looking for new boiler replacement, you can get a fixed online cost here.

What is a combi boiler?

Before we delve deeper into the costs, it’s firstly important to explain exactly what a combi boiler is.

This is a combination boiler and shouldn’t be mixed up with a conventional one. If you need help on what a conventional boiler is then our guide on what is a conventional boiler will help.

It controls both your heating and hot water, delivering them both instantly whenever you need them.

You “do not” need to have a hot water cylinder heated.

new boiler cost

worcester bosch boiler cost

How much do new combi boilers cost?

Combi boiler replacement costs varies from £1,500 to £3,500.

This includes both the cost of the unit itself, as well as the new installation costs.

There are a number of different factors at play here:

This includes the area in which you live, the labour costs, how complicated the required installation is, and the sort and size of boiler that you need.

For example:

  • If you live in London, you can expect to pay slightly more when getting your new boiler installed.
  • If your requirements are complicated, then the new boiler price is going to be more complex!
  • If you opt for a premium boiler, you are going to have to pay a premium price
baxi boiler cost
How much does a system boiler replacement cost?

Regular boilers, otherwise known as system boilers, can cost anything from £1,500 to £3,000.

For those who are unaware, this type of boiler is essentially the opposite of a combi boiler.

This means that there is a separate tank, which is typically in the loft, and a separate water cylinder, which is usually in the airing cupboard. Megaflo offer unvented system boilers and are a recognised industry brand.

These sorts of boilers do not provide cold water and hot water on demand, which is why many people have made the move to a combi.

Again, there are going to be a number of different factors that determine the total cost of a system boiler.

As well as boiler warranty length and the complexity of the job, you also have to consider whether any added pumps are needed and required controls.

Replacing a system boiler to a combi boiler cost (Conversion)

If you want to make a boiler replacement from a standard system boiler to a combi, this can cost anything from £2,500 to £4,500.

To understand why this is more expensive than just having a boiler installed from scratch, there are a few things to consider here, and it ultimately comes down to all of the work that is included.

For example:

  • The water cylinder and old boiler are going to need to be fully removed.
  • There also needs to be new upgraded pipework, which is fed into the new location of the incoming boiler or existing location.
  • Then, you actually have to have the new combi installed, and this is the simple version.
viessmann boiler costs

This is a big job, and it will often require around two days of work, so you can see why it is expensive.

However, if you have the budget, a lot of homeowners will tell you that making the switch is the best decision they ever made long term. ?

This is not only because they get hot water the minute they need it, you also get great efficiency savings as well, which means you put more money in your bank account.

new boiler cost

Here are some benefits of replacing your old inefficient boiler with a new one:

  • Lower costs – You will not only save money on your energy bills but you will also be able to reduce expenses when it comes to maintenance.
  • Nobody is going to have to go to the roof in order to fix any boiler problems.
  • Mains pressure water – Hot water will be delivered through your shower and taps at mains level power, enabling you to enjoy high power showers.
  • Save space in your property – If you combine a central heating boiler and a water heater into one unit, you are going to reduce the space that is needed considerably.

What impacts the cost of boiler replacement? 

There are a number of different factors that influence the cost of a boiler.

On the surface, it may seem like it is just the labour cost and the cost of the unit itself, however, there are a number of factors that add to the price of a new boiler, and so we are going to delve into these in further detail.

The price of the boiler itself

Of course, there is only one place to begin, and this is with the price of the unit itself.

The price of a boiler differs by hundreds of pounds, if not thousands.

It all depends on the quality of the boiler, as well as the brand, kW size, and model.

Later in this guide, we are going to take a look at some specific brands of boilers, as well as the average cost of these boilers.

The typical unit price is anywhere from £400 to £1,800 dependent on the model and manufacturer.

However, there are some much more expensive units on the market today such as the Megaflo unvented boiler range.

The cost of labour to fit your new boiler

For a boiler swap, the cost of labour is anywhere from £600 to £800 on average. This depends on the size of your home and what size boiler is required to heat your home.

The cost of conversion on average tends to be between £1,000 to £1,500. For example a back boiler swap or conversion.

For many years, heating specialists were watched over by the official watchdog CORGI (the Council of Registered Gas Installers). The CORGI brand was synonymous with quality and safety.

If you got a CORGI engineer in to perform a new install, you knew you’d be getting quality work done.

new boiler gas safe installation cost

However, CORGI wasn’t mandatory and was a voluntary registration scheme. That meant there was a whole load of heating specialists out there fitting combis who weren’t registered.

Thankfully that changed during 2009 and 2010 when the Gas Safe Register replaced CORGI.

This made it mandatory for all central heating combi boiler installation costs and servicing workers – including those performing combi boiler repairs or boiler installation jobs – to be registered.

In order to be part of the registry, combi boiler installation experts have to have the proper qualifications to work on any boilers. So always ask to see your installer’s Gas Safe Register card for proof of their credentials.

Upgraded warranties of up to 15 years

In addition to the costs that have already been mentioned, extended warranties, especially ten-year warranties in most cases, are only able to be provided by trusted manufacturers and partners.

15 year warranty

They can sometimes rely on additional approved equipment being fitted.

For example, magnetic boiler filters. They will tend to results in additional costs being added to the installation.

However, there is no denying that a longer warranty is an expense that is worth incurring. It could end up saving you a lot of money in the long run!

new boiler cost

Upgraded heating controls including smart thermostats

central heating smart thermostat

Thanks to upgrades in technology in recent times, boilers can be turned on and off with ease. You do not have to walk to the boiler in order to make changes.

Depending on the brand and type of the controller, it is going to add varying figures to the new boiler price.

The average price of this is between £100 and £300.

Vaillant boiler cost

Relocating the boiler

You may need to move the location of your boiler for many reasons.

This is going to cost more money, which is going to require a number of new fittings and fixtures, as well as emotional robustness, additional pipework, and a lot of physical labour.

Unless moving your boiler is vital, it is always a good idea to avoid this. If you are going down the back boiler removal and replacement route then you must now convert to a combi, regular or system boiler.

You can upgrade your gas pipes to new, more efficient ones

condensate pipes

You may also need to have the main gas pipe upgraded.

A lot of the older heating systems are constructed using gas piping of a width around 15 mm.

However, in order for modern regulations to be met, these pipes need to be upgraded to 22 mm in most cases. This can sometimes cost more money.

In most cases, older pipes will also be made from lead, and so they will need to be replaced using copper piping.

You need to be cautious of rogue traders who do not plan to upgrade the pipework. This would be an illegal installation, and so while it may be cheaper, it is certainly not worth the risk – that much is certain!

Free plume kits are included in most installs 

plume kit is basically an extension kit that attaches to the flue of the boiler. This can be required when your boiler flue is too close for comfort to your neighbouring properties, door, or window.

Plus, it must comply with Gas Safe regulations by law.

The typical cost of a plume kit for your new combi, regular or system boiler is anywhere between £90 and £130.

A chemical flush is sometimes included to flush your system out

You may also need to pay for a chemical flush. This can be anything from £100 to £150.

chemical flush (cost)

Flushes help to get rid of any existing sludge from your heating system. Sludge can prevent the hot heating water from flowing efficiently around your radiators if you do not clear it. ♨ 

If your radiators are cold at the bottom, a deep clean is going to be required. There are a lot of different options when it comes to this. ❄

However, the most common and standard option is a hot, chemical flush.

For a power flush, you can pay more than £500 with many boiler companies.

Be careful with these, as they can often do more damage than good by forcing high pressure water through a heating system, especially if it is an old one. It can cause debris to move about that was not causing an issue before.

Then you’re left with a new boiler that’s got issues with the system because it was power flushed when it didn’t really need to be flushed.

new boiler cost

A brand new boiler flue is mandatory as per law (and included in your price)

boiler flue is basically a big piece of pipe, which leads from the boiler to the outside of your property.

This makes sure that the flue gases and condensation are pumped outside and not into your own face. Pretty important, right??‍

Most of the time, the flue is going to leave your home horizontally, which means that there are no extra expenses.

However, flues that leave vertically through your roof demand much more work, resulting in more expenses. This can just be plain bad luck.

The average cost for a flue is anywhere from £100 to £600 dependent on the length required and type.

A vertical flue is generally more expensive than a horizontal flue.

Magnetic boiler filter costs

The average cost of a magnetic boiler filter is between £100 and £200

Filters are installed inline on the pipework, helping to protect your boiler and some companies install them included in your price.

They utilise powerful magnets that trap small particles of metal and dirt, stopping them from going into the boiler itself and causing unnecessary boiler leaks and damage.

A quality boiler installation specialist is always going to put together the full cost of a filter into your final quote.

new boiler costs 2020

You should not be stung with added expenses at the end. 

These are the leading gas boiler brands in UK (with costs)

Below, we are going to take a look at some specific boiler makes, as well as the average costs.

Worcester Bosch boiler cost

worcester bosch boiler

£1500 – £3,600

If you’re looking for good reasons to select one of the Worcester Bosch range of boilers, there are quite a few to choose from.

Worcester boiler installers are very experienced in extolling the virtues of their favourite type of boiler, but they’re right when they say that the boilers are excellent.

Perhaps one of the immediate selling points for people looking at Worcester combi boiler is that it has received the Which? ‘Best Buy’ award for six years running.

This award is given on the basis of independent customer ratings, so you can be assured that it is well earned.

Worcester Bosch boilers are also one of the most versatile ranges on the market, with sizes that will fit all properties, including an excellent range that will fit neatly into kitchen cupboards.

These boilers can also be fitted with magnetic central heating filters that can prevent sludge build up in your heating systems.

Another benefit that you should consider when buying a new boiler is the availability of parts and how easy it’s going to be to have your boiler fixed if something goes wrong.

Thanks to the prominence of Worcester Bosch in the marketplace, you’ll find that your repairs are done swiftly and without too much waiting around for parts.

Ultimately, however, there is one aspect of buying a Worcester Bosch boiler that seems to stand out in all the reviews available across the Internet:

worcester bosch new boiler cost
Worcester Bosch – The Greenstar Range

£1,450 – £2,900

Worcester Bosch boilers are what a lot of people seek when the time comes to replace their old boiler replacement to power their hot water.

In particular, people look to Worcester’s range of Greenstar gas combi models. However, there are a few differences between the Greenstar combi boiler models.

The two main models in the Greenstar range are the ‘i‘ and the ‘CDi‘.

The ‘i’ model is the most popular of the Greenstar boilers today, and acted as the replacement for the last generation of Greenstar which was installed in over one million homes across the UK. The reason for its popularity, like its predecessor, is its simplicity.

New Boiler costs (which logo)

It features smart heating controls that are simple and user-friendly. 

It also has features such as a low energy pump to reduce electrical usage, and is an ‘A’ rated boiler on the energy efficiency chart.

Both of these features mean that your boiler will be using less energy and, therefore, will be saving you money on your annual gas and central heating bill.

It’s also popular in the UK thanks to being well suited to the “cold climates.”

As long as the boiler installation is performed correctly, there is zero risk of pipes freezing during the winter months.

worcester boiler costs

You can pick up a Greenstar i combi boiler for between £1,450 and £2,900.

The ‘CDi‘ range is similar to the ‘i’, but it is the top performing gas combi boiler in the Greenstar range – offering the highest hot water flow of all wall-mounted boilers.

The CDi’s improved performance means that it is more suited to large homes than its fellow Greenstar models.

You can get different models of CDI boilers with prices ranging from around £1418 to £2400.

But whatever new boiler option you pick, you will get “Quality.”

new boiler cost

Baxi boilers cost

baxi boilers prices

£1,225 – £2,500

Baxi is a well-known boiler brand. The company itself has been providing heating products for 150 years. Yes, that’s right – since 1866!

They have a wide range and different types of boilers that you can purchase.

One of their current models is the Baxi Platinum combi boiler.

The Platinum comes with an incredible 10-year-warranty, demonstrating how confident Baxi is in the reliability of the Platinum range.

It has a Band A efficiency rating, which means it’s one of the most energy efficient boilers out there.

The Platinum range also features a terrific hot water flow rate, meaning that you’ll never be left feeling cold in the middle of a shower.

The top of the range Platinum boiler is the Baxi Platinum HE.

This one is an extremely popular local household favourite. It has even received a ‘Best Buy’ reward from commercial watchdog Which

Of course, the Baxi’s performance is dependent upon a good installation job, and this is going to cost money too.

However, in terms of the units themselves, prices range from around £625 for the Baxi 424 Combi Gas Boiler, which runs at 89% efficiency, to the Baxi Platinum Combi 40 Gas Boiler. Easy enough hot water output for most homes.

It comes with a ten-year warranty, 88.9 per cent efficiency, and 40kw. If you have a large home you may need a higher powered boiler such as a system boiler and water cylinder.

Vokera boilers cost

vokera boiler prices

£1,250 – £2,200

Like many other boiler manufacturers, Vokera have a range of both system and the leading combi boilers on the market.

Most of these combi models are compact, meaning they are ideal for putting into the kitchen cupboard of a small flat.

As long as it’s properly fitted by a professional combi boiler installer, you shouldn’t see any issues for the first five to ten years of life.

Vokera’s range of combi boilers comes with a two-year guarantee from the manufacturer.

vokera boiler cost

The great thing about Vokera is that their range of combi units is simple and catered for those on a “budget.”

The price of a Vokera combi boiler is not only reasonable for those on a tight budget, but also good for those who are only going to be staying temporary or short-term in a property.

In particular, the Vokera Excell is one of the top models amongst the range and is hard to beat on installation price.

It’s also an ‘A’ rated combi boiler in terms of energy efficiency, which means it will save you money on your gas central heating bills.

This is the case with all boiler brands, the prices do differ considerably depending on your requirements.

Ideal boilers cost

ideal boiler costs

£1,350 – £2,600

Boiler installers will give you a whole range of options when it comes to potential gas boilers that they can install.

However, there’s always a worry that they may be trying to provide you with a cheap gas boiler at a much higher price than it’s worth.

Yet there are gas boiler brands of great quality to watch out for, including those from Ideal.

Ideal have been providing gas boilers for a long time and have become renowned for producing quality combi boilers.

In particular, their Logic+ range of gas boilers is considered one of the best and most popular models available on the central heating market today the UK.

One of the reasons for this is the fact that Ideal offers a seven-year warranty on any Logic+ boiler.

ideal logic boiler cost

This range of boiler has won numerous heating awards, including ‘Product of the Year’ titles within boiler categories. ‘Good Housekeeping’ readers and the Energy Saving Trust have also recommended it.

It’s also loved by those performing boiler installation, as this boiler is simple to install, which means that your new Logic+ can be fitted in no time at all.⏰

The Logic+ series has other notable installation features such as built-in frost protection, a compact size (making it perfect for cupboards), and comes with a range of installation options to suit different properties and size limitations.

Ideal also provides other ranges such as the Ideal Vogue, which comes with an almighty 10-year warranty.

It’s no surprise that Ideal is so popular and synonymous with quality heating.

At the lower end of the range, you have the Ideal Independent Combi boilers, which are between £1,625 and £1,750.

If you’re looking for something with more KW, the Ideal Vogue Max or Ideal Logic Code Combi are both good options.

The former is priced between £1,109 and £1,340.

The Ideal Logic Code Combi is on the market for between £1,000 and £1,330.

new boiler cost

Don’t overlook the cost savings you can make with a new boiler 

energy efficiency

A lot of people do not realise that their boiler is costing them a significant amount of money.

Make the switch to a Grade A boiler heating system today and get it installed by a Gas Safe installer.

Not only will you reduce expenditure, but you will reap the rewards of greater efficiency as well.

Monumental efficiency improvements with a Grade A boiler

When companies promise to improve the heating efficiency of your home, you are probably expecting a slight improvement.

However, the difference is truly astounding when it comes to upgrading your boiler.

If your home currently uses an old boiler it is likely that you will only be running at an efficiency rate in the region of 30 – 40 per cent.

Once you have a Grade A boiler installed you will experience an efficiency rate of over 90 per cent. The difference is huge and thus the benefits are vast just like you would have an old system boiler powerhouse.

new boiler costs (quiet mark)

Reduce your energy bills dramatically 

The efficiency benefits that have been mentioned ensure that you make massive cost savings as well. You can cut your heating bills in half by opting to have a Grade A boiler installed, and thus this is a system that will quickly pay for itself.

This is particularly beneficial when you consider the rising gas prices in the UK at present and also the increasing new boiler cost.

In fact, did you know that over the past three years gas prices have increased by a monumental 140 per cent?

Whilst we cannot do anything to stop these rising prices, you can control how much you pay by opting for a Grade A boiler.

This switch will play a major role in reducing your energy bills.

New boiler cost conclusion

new boiler cost

As you can see, prices do differ dramatically depending on the type of boiler that you opt for and the quotes that you get for your new boiler installation.

Prices very depending upon multiple things and you are best seeking additional advice if you are unsure of what boiler is suitable for your property.

It is also clear to see that a lot of the expense comes from the installation as well, yet this is an extremely important part of the process and you do need to make sure you select a professional with care.

new boiler costs (money)

Good luck with making the correct decision to suit your house or property. 

If you would like to get a fixed online quote now without inputting any personal details, click here.

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