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Best Boiler Brands & Prices

If you need a new boiler, it's a good idea to compare the best boiler brands on the market, and not to be guided by price alone or stick with the boiler brand you already have. Professional boiler installers will have their own opinions and advice on the topic, but there are certain brands which are recommended as the best boiler brands time and time again.

Here we introduce the best boiler brands, average prices, and the likely total cost of boiler installation if you are in the market for a boiler replacement.

Best Boiler Brands

Worcester Bosch

Worcester Bosch has been one of the most popular and well-known brands on the market for over 50 years. This British boiler brand has a reputation for manufacturing high quality gas, LPG and oil boilers, as well as an expanding range of renewable heating systems. The brand offers regular, system, and combi boilers in sizes to suit every type of home including a warranty of up to 5 years. Worcester Bosch manufactures oil and gas boilers.

Vaillant

Vaillant is a leading European manufacturer of gas-fired regular, system, combi boilers, and renewable heating technology with over 140 years of history. With origins dating back to a small workshop in Germany in 1874, the now international company remains a family-owned business dedicated to producing highly efficient, state-of-the-art technology. Vaillant boilers are available with warranties of up to 10 years.

Baxi

Baxi is a commercial and domestic heating brand which has been in operation since 1866 in the UK and Ireland. The company manufactures gas boilers, although many can be converted to LPG where necessary. You can choose from regular (heat only), system, and combi boilers in a wide range of sizes. The boilers are available with warranties of up to 10 years.

Ideal

Since 1906, Ideal have been manufacturing boilers to meet the ever-changing heating needs of homeowners across the UK. Ideal offers an extensive range of combi, regular and system gas boilers meaning there's a suitable option for the heating and hot water demands of almost any home. Ideal offers one of the longest warranties on the market with some boilers including 12 years as standard.

Viessmann

In 1917, master locksmith Johann Viessmann started a locksmith business in Bavaria in Germany, but in 1928 he began designing and manufacturing boilers. At the time, boilers were made from cast iron which made them slow to reach temperature, so Viessmann developed a steel boiler design to deliver heat faster and consume less fuel. Today, the organisation is still run by the Viessmann family, but it is an international heating company renowned for innovative technology. Viessmann offers regular, system, and combi boilers in a range of sizes, including oil and gas models.

How much do the best boilers cost?

Boiler prices, i.e. the price you pay for the boiler itself excluding installation costs, can range from £500 up to £2,800 (on average).

You can use our Boiler Comparison tool to compare typical boiler prices for up to 4 boiler models. We've compared the UK's best selling boilers by price so you can work out which brand is likely to give you the best value for money.

The bigger your home and the more hot water you use, the more powerful the boiler needs to be. This is measured in kW (kilowatts) and the higher its kW rating the higher the price will be. Read more about this in our page about boiler sizing.

The brand you choose will also have a big impact on the boiler price with some manufacturers offering lower price models than others. As with most home appliances, you tend to get what you pay for in terms of value for money and a boiler is a long term investment so don't be tempted to opt for the cheapest possible if you can help it. Having said that, several of the boiler manufacturers at the lower end of the price scale offer reliable and high quality boilers which is why you need a professional engineer to help you get the best deal on your boiler price.

Brand Price range (average)
Worcester Bosch £750 – £3,000
Vaillant £850 – £2,700
Baxi £550 -£1,400
Ideal £700 – £2,000
Viessmann £850 – £3,000

Boiler price is also affected by the type of boiler you choose. A Combi boiler is a single compact unit whereas a Regular and System boiler require a hot water cylinder as well. It's often recommended to replace the hot water cylinder at the same time as the boiler and this will obviously increase the overall price.

The boiler prices here are typical of the industry at the moment (i.e. not to be taken as quotes) and exclude the cost of having it installed by a professional engineer. By law, a gas boiler must be fitted by a Gas Safe registered engineer (an oil boiler should be installed by an OFTEC registered engineer). On average, the installation costs can add between £600 but installing it in a different location may be between £1,500, depending on how complex the installation is. Comparing quotes from several engineers is the best way to keep costs down.

Note: This comparison features gas boilers from each manufacturer. If you have an oil boiler, you may want to visit our Best Oil Boilers article.

To compare up to 4 boilers by price and key features across all brands, head over to our boiler comparison tool.

Worcester Bosch boiler prices

Suitable for… Boiler Model Size Type Typical Price
Small 1 – 2 bedroom homes, 1 bathroom Worcester Bosch Greenstar 25i 25kW Combi £850
Medium 3 – 4 bedroom homes, up to 2 bathrooms Worcester Bosch Greenstar 30Si Compact 30kW Combi £1,069
Medium 3 – 4 bedroom homes, up to 2 bathrooms Worcester Bosch Greenstar 27i System 27kW System £981
Medium 3 – 4 bedroom homes, up to 2 bathrooms Worcester Bosch Greenstar 35CDi Classic System 35kW System £1,187
Large 5+ bedroom homes, 2 or more bathrooms Worcester Bosch Greenstar 40CDi Classic Regular 40kW Regular £1,495

Find out more about the Worcester Bosch brand and the full range of boilers here.

Vaillant boiler prices

Suitable for… Boiler Model Size Type Typical Price
Small 1 – 2 bedroom homes, 1 bathroom Vaillant ecoTEC plus 825 Combi 25kW Combi £1,075
Medium 3 – 4 bedroom homes, up to 2 bathrooms Vaillant ecoTEC plus 832 Combi 32kW Combi £1,200
Medium 3 – 4 bedroom homes, up to 2 bathrooms Vaillant ecoTEC plus 630 System 30kW System £1,256
Medium 3 – 4 bedroom homes, up to 2 bathrooms Vaillant ecoFIT pure System 30kW System £1,256
Large 5+ bedroom homes, 2 or more bathrooms Vaillant ecoTEC plus 435 Regular 35kW Regular £1,430

Find out more about the Vaillant brand and the full range of boilers here.

Baxi boiler prices

Suitable for… Boiler Model Size Type Typical Price
Small 1 – 2 bedroom homes, 1 bathroom Baxi 224 Combi 24kW Combi £635
Small 1 – 2 bedroom homes, 1 bathroom Baxi 428 Combi 28kW Combi £655
Medium 3 – 4 bedroom homes, up to 2 bathrooms Baxi EcoBlue 32 System 32kW System £1,127
Medium 3 – 4 bedroom homes, up to 2 bathrooms Baxi Megaflo 28 System 28kW System £945
Medium 3 – 4 bedroom homes, up to 2 bathrooms Baxi 430 Heat 30kW Regular £925

Find out more about the Baxi brand and the full range of boilers here.


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Ideal boiler prices

Suitable for… Boiler Model Size Type Typical Price
Small 1 – 2 bedroom homes, 1 bathroom Ideal Logic Combi 24kW Combi £775
Medium 3 – 4 bedroom homes, up to 2 bathrooms Ideal Logic+ Combi 30kW Combi £845
Medium 3 – 4 bedroom homes, up to 2 bathrooms Ideal Logic+ System 30kW System £905
Medium 3 – 4 bedroom homes, up to 2 bathrooms Ideal Vogue Max System 32kW System £1,135
Large 5+ bedroom homes, 2 or more bathrooms Mexico HE 36kW Regular £2,200

Find out more about the Ideal brand and the full range of boilers here.

Viessmann boiler prices

Suitable for… Boiler Model Size Type Typical Price
Small to medium sized homes, 1 – 4 bedrooms, up to 2 bathrooms Vitodens 050-W Combi 29kW Combi £865
Medium 3 – 4 bedroom homes, up to 2 bathrooms Vitodens 100-W Combi 30kW Combi £1,095
Medium to Large homes, 2 or more bathrooms Vitodens 200-W System 35kW System £1,300
Large homes, 2 or more bathrooms Vitodens 100-W Open Vent 35kW Regular £1,200

Find out more about the Viessmann brand and the full range of boilers here.

Glow-worm boiler prices

Suitable for… Boiler Model Size Type Typical Price
Small 1 – 2 bedroom homes, 1 bathroom Glow-worm Energy Combi 25kW Combi £775
Medium 3 – 4 bedroom homes, up to 2 bathrooms Glow-worm Ultimate3 Combi 30kW Combi £705
Medium 3 – 4 bedroom homes, up to 2 bathrooms Glow-worm Energy System 30kW System £850
Large 5+ bedroom homes, 2 or more bathrooms Glow-worm Ultimate3 Regular 25kW Regular £725

Find out more about the Glow-worm brand and the full range of boilers here.

Costs to install a new boiler

In addition to the price of the boiler itself, you also need to factor in the labour costs involved in installation. On average, installation costs fall between £500-£1,000. This makes the total average cost of a new boiler (fully installed) £1,500-£2,500, but this will be influenced by lots of different factors.

If you're looking for a new boiler replacement you have a couple of choices. You could go directly to a boiler manufacturer (all listed at the bottom of this page). This may mean you get a cheaper deal on the price of the boiler itself, but you will still need to find and pay a Gas Safe engineer to install it for you. In addition, if you're not sure what you need in terms or size or type of boiler, you may end up buying the wrong boiler. With an average new boiler costing £1,800 - £2,300 this is an expensive mistake to make!

The better option for most homeowners is to find a heating company or Gas Safe engineer who has expertise in this area. They can help you choose exactly what you need and guide you through all your boiler replacement options such as type, size and brands of boilers. If you're replacing a particularly old boiler you may want to update from a Regular to a System or even a Combi.

In addition, different heating engineers will charge different rates for their work so it's always best to compare quotes from at least 2-3 different companies to ensure you're getting the best deal.

Find out more in our guide to boiler replacement costs.

More boiler brands to consider

When it comes to choosing the make and model of boiler for your home there are several boiler manufacturers to choose from. Some have better reputations for quality and performance than others and you'll find a range in prices too. To make the best choice for both your budget and home you need to consult a professional heating engineer who will be able to recommend reliable brands which are affordable for you.

Take a look at each of the manufacturers, their range of boilers and typical prices by clicking on a brand here:

Alpha Ariston ATAG
Baxi Biasi Daikin
Ferroli Firebird Glow-worm
Grant Ideal Intergas
Johnson & Starley Keston Main
Mistral Potterton Ravenheat
Vaillant Viessmann Vokera
Warmflow Warmhaus Worcester Bosch
Zanussi

Get the best price on a new boiler

Do you want to keep the same type and brand of boiler or are you interested in making a change? Most boiler replacements are combi boilers; these compact boilers deliver hot water for both your heating and taps on demand which is often more energy efficient than systems which require a hot water cylinder and electric immersion heater to store hot water. Combi boilers get their water supply directly from the mains and so don't need a separate water tank in the attic or a hot water cylinder. However, larger homes with 2 or more bathrooms will have a higher demand for hot water that is better served by a system or regular boiler.

A new combi or system boiler will usually cost between £600 – £850 at the lower end of the scale with mid-range models coming in at around £800 – £1,100. The most you can expect to pay for a combi or system boiler (excluding installation) is around £2,000. A regular boiler may cost between £500 – £1,500.

Boiler prices also increase with the output size, i.e. how powerful the boiler is. Your boiler should suit the size of your home, number of bathrooms and number of radiators. This is something that installers will be able to advise you on but you can find out more in What Size Boiler Do I Need?

Avoid cheap boilers

It can be tempting to look for the cheapest boiler on the market, especially if the boiler has broken down out of the blue. However, a cheaper boiler may not be as efficient which will end up costing you more in heating bills and may be of a poorer quality leading to ongoing repair costs. If you can take the time to shop around, get advice from multiple engineers, family, friends and other consumers, it really will pay off in the long run.

Some heating companies are able to offer a boiler finance arrangement so the total price of the boiler and installation cost is broken into manageable payments over longer period.

Best boiler efficiency

As boilers age, they can become inefficient and unreliable. This leads to more and more frequent breakdowns and eventually a new boiler replacement is the only option. By installing a new A rated boiler you could also notice a significant reduction in energy bills depending on how old and inefficient your current boiler is. Boiler efficiency is represented by a grade from G to A+++ (G being least efficient) according to the Energy related Products Directive (ErP).

While G-rated boilers only achieve between 50-70% efficiency, newly installed boilers have to be at least 92% efficient to satisfy the Boiler Plus legislation which came into effect in April 2018. The more energy inefficient your existing boiler the greater the saving you'll be able to achieve on your annual energy bills.

How to find the best boiler installers

The Gas Safe Register replaced CORGI and is the official list of engineers who are registered to work legally and safely on gas appliances. By law, all gas engineers must be on this register - any tradespeople carrying out work on gas appliances who are not are illegal and could face fines and even prison time.

At Boiler Guide we thoroughly vet every company to ensure they are Gas Safe Registered boiler engineers, so you can be sure any work carried out by a Boiler Guide engineer will be safe and of the highest quality.

Boiler Guide is an easy way to get competitive quotes from approved installers in your area. Simply send us an enquiry and we'll do the hard work to find you up to 3 free, no-obligation quotes. Get free quotes now.

Getting the best boiler quotes

The best way to get the best price on your boiler installation is to compare quotes from at least 3 different heating companies. With Boiler Guide, you can get free quotes from up to 3 Gas Safe registered engineers who carry out boiler installations in your local area. Simply take a few moments to complete our online enquiry form and we'll use the information you provide to match you with suitable heating engineers.

Each company will be in touch to arrange a time and date to provide their free quote. Then once you've received each of the quotes, you can compare them with each other to ensure you're getting a competitive price from the most suitable person for the job.


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Boiler Guide Team

About the author

Boiler Guide Team

Boiler Guide has been home to a host of heating experts who have helped millions of UK homeowners searching for advice and guidance. If you’ve got heating questions, we’ll have the answers.

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