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Last updated: 13 March 2024

Best Gas Boilers For Home Heating In The UK – 2024

Top 5 Best Gas Boilers

Choosing the best gas boilers for our homes can be a challenge. For the majority of the UK, our boilers run on natural gas (that’s roughly 85% of us!), and when it comes time to replace this vital appliance, there are some key details it’s important not to miss. 

In this article, we’ll reveal the top 5 best gas boilers and give you the full breakdown of what makes them better than the rest. We’ll look at efficiency levels, brand reputation, warranty lengths, and those all-important money-saving opportunities!

Here’s a quick overview of the top 5, and where they each excel:

  1. Worcester Bosch Greenstar 8000 Style: Best gas boiler for reputation and style
  2. Vaillant ecoTEC plus: Best gas boiler for efficiency and smart features 
  3. Ideal Heating Vogue Max:  Best gas boiler for reliability and warranty
  4. Baxi 800 (2): Best gas boiler for any sized home
  5. Viessmann Vitodens 100-W: Best gas boiler for the innovative tech inside

Discover more about these boilers below, find out what makes them the best and discover how each one could benefit you and your home. We’ve also included estimated prices per boiler so that you can get a good idea of new boiler costs and possibly some cheap boilers.

If you’re ready to take the next step and secure a new boiler replacement, we recommend speaking to qualified installers and comparing quotes. Don’t waste hours searching for reliable installers though, let us do the leg work for you!

Using our quick and easy form, you can get up to 3 free, no-obligation quotes from local installers in your area. Using someone nearby can reduce costs and you may even be seen more quickly! To get started, and find the very best deal for your new boiler, simply click the button below.

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Best gas boiler brands in the UK

When looking for a new boiler, there can be a lot of information out there. In particular, you will find numerous boiler brands and boiler manufacturers who all seem to sell ‘the very best’. It can be hard to choose between them, particularly as so many of them have years of experience and fantastic product reviews. 

To start our best gas boiler search, we looked first at the big brands. Those with the highest reputation and the best overall to their customers. The 5 we chose all consistently come out on top for the reliability and longevity of their products, but they also excel in other areas. 

Below is a summary of the brands we’ve chosen, with details of some of their key strengths and highlights.

BrandAverage Warranty or Guarantee*Price RangeTrustpilot RatingsAwards
Worcester Bosch7 – 12 YearsMid – High4.6 out of 5 ‘Excellent’
40,500+ reviews
Which? Best Buy
Gas Combi Boiler Range ‘Greenstar’ (Sept 2023) – Won 14 times
Vaillant5 – 10 YearsLow – Mid4.5 out of 5
19,700+ reviews
German Sustainability Award
(Nov 2023) – Won 3 times
Ideal Heating2 – 12 YearsLow – Mid4.8 out of 5
38,000 reviews
Good Housekeeping Reader Recommended 2023
Baxi2 – 10 YearsLow4.6 out of 5 ‘Excellent’
53,000+ reviews
Gas Industry Award for Innovation (May 2021)
Viessmann2 – 7 YearsLow – Mid4 out of 5
4,000+ reviews
Which? Best Buy
Gas Combi Boiler Range ‘Vitodens’ (Sept 2022)
*All warranty/guarantee lengths are subject to individual manufacturer’s terms and conditions. 

How did we choose the best gas boilers?

To find you the very best gas boiler recommendations, we’ve researched the boiler brands with the best reputation and then explored each range of gas boilers they offer. Using some key criteria we concluded which models offered the best deal for homeowners. 

The criteria we used to find are detailed below:


How efficient a boiler is, determines how much of the fuel that it consumes is turned into usable heat. For example, if a boiler is 92% efficient, for every unit of gas the boiler burns 92% of it will be converted directly into heat that warms your water. 

Looking for a new boiler with the highest efficiency levels will ensure you save money. Every unit of fuel has a cost, so the less fuel that is wasted during the heating process, the less you will need to use to heat your home – therefore saving money.

Boiler Efficiency is measured for boilers using the ErP rating system (Energy-related Products). This gives an appliance a rating from A to G based on how efficiently it uses fuel. A is anything above 90% and G indicates anything lower than 70%. 

Warranty/Guarantee length:

The best way to gauge the expected lifetime of a new boiler is to check out the manufacturer’s offer to cover any faults with a warranty or guarantee. If they have a generous warranty, of 10+ years for example, this is a great indication that they are confident the product will not need to be replaced within this time. 

Equally, this gives you greater peace of mind to know that any issues will be covered for an extended period and you won’t need to worry about unexpected repair costs. Just be sure that any warranty you are offered is correctly registered and offers the kind of cover you want – as each manufacturer may provide different levels of cover.


Not all homes are made equal, and neither are boilers! Every home requires different things from its boiler, so we want to make sure that boiler models in this list can be used in many homes. 

To do this we’ve checked if they provide:

  • A variety of boiler types (system boiler, combi boiler or conventional boiler)
  • A size range/multiple power outputs (this determines how powerful a boiler is, and therefore how many bathrooms and taps it can supply water to; the higher the power the more it can achieve) 
  • Alternative fuelling options

Extra features

Aside from simply heating your water for taps and radiators, a lot of new boiler models come with handy extra features. This can include smart app controls, added efficiency features or even future-proofing technology, such as being ready to switch to a low-carbon gas supply (a 20% hydrogen blend). 
These key features have led us to find 5 highly efficient, advanced gas boiler ranges. Each has a powerful brand, trusted by thousands of customers and excels in their own unique way. We have also included estimated costs so that you can discover which option offers the best central heating prices for you.

Top 5 best gas boilers in 2024

After applying our key criteria, we have found the following 5 gas boilers to be the best on the market. Each one offers a range of features and benefits that would make any home, the most comfortable and cosy.

Worcester Bosch Greenstar 8000 Style Combi Boiler

1. Worcester Bosch Greenstar 8000 Style 

Price range: £1,500 – £2,700 (Exc. installation)
Available types: Combi and System 

Worcester Bosch is consistently producing award-winning boilers that customers can rely on. 

The Greenstar 8000 Style is a part of the range which has won Worcester Bosch the ‘Which? Best Buy’ award 14 times! 

Not only does this model look stylish (available in white or black), but it packs a whole range of features into a small unit. This powerful boiler can provide power outputs between 30 – 50kW, making it great for both small and large homes, with multiple bathrooms. 

Being a high-end brand, Worcester Bosch boiler costs can be much higher than others, however, their reputation and longevity can account for this. Prices will also vary greatly depending on what your home needs. 

It is A-rated for efficiency in heating and hot water, so you can be confident you are getting the most out of your fuel. This range also comes with a generous 12-year guarantee (terms apply) and is amongst the most quiet boiler models available. So you can simply let it run in the background without a worry!

Other features:

  • Ready to run on a 20% hydrogen blend
  • Also available in an LPG model (Liquified Petroleum Gas)
  • ‘Good Homes’ approved
  • Wireless connection to a smart thermostat (Bosch EasyControl)
Best Gas boilers Vaillant ecoTEC Plus

2. Vaillant ecoTEC plus

Price range: £1,500 – £1,800 (Exc. installation)
Available types: Combi and System 

Vaillant is well recognised for their innovative home heating solutions and the ecoTEC plus showcases that in one compact unit. 

Available as a combi or system boiler, this model has an ErP A-rating and can provide up to 94% efficiency.Using Vaillant’s newIoniDetect’ technology, this boiler offers greater efficiency and lower fuel consumption than most of its competitors. 

With the option of two boiler types, and power outputs between 10 – 40kW this boiler can be used in homes both small and large, from 1 to multiple bathrooms. 

Vaillant boiler costs are in the mid-to-high range, however, the advanced use of technology and a generous guarantee of up to 10 years, can account for this. 

In addition, this boiler is also smart home ready, meaning it can work with devices such as Apple Homekit and Amazon Alexa. It can also be controlled through the myVAILLANT app, so you can have even greater control over your home heating.

Other features: 

  • Compact to fit in a cupboard
  • Aluminium heat exchanger (lasts longer, reduces energy consumption)
  • Delivers hot water in 5 seconds
Vogue Gen2 Combi;System

3. Ideal Heating Vogue Max 

Price range: £1,280 – £1,600  (Exc. installation)
Available types: Combi and System 

The Vogue Max from Ideal is a high-quality boiler, built to last. It comes with the ‘Ideal System Filter’, which ensures the internal pipework remains free of contaminants and runs more smoothly and efficiently.  The inclusion of a filter makes this model more likely to last longer, making it our most reliable option in this list. 

In addition, Ideal also offers up to 12 years warranty with this boiler, meaning you have even greater peace of mind and protection against any unexpected issues. 

Available as both a combi and system boiler, the Vogue Max is suitable for most homes. Outputs are available from 15 – 40kW, which means there’s a suitable option for those with small or large properties. Ideal boiler costs tend to be on the lower end, which also opens this option up to more homes.

This model is also A-rated for efficiency, meaning it’s not only reliable but can save you money as well. One additional bonus is that the whole unit is incredibly lightweight, which means it can be fitted very quickly and easily.

Other features: 

  • Full-colour LCD display 
  • Compatible with smart controls
  • Frost protection 
  • LPG conversion available

4. Baxi 800 (2)

Price range: £1,100 – £1,400 (Exc. installation)
Available types: Combi, System and Conventional (Heat Only)

Baxi is a household name when it comes to boiler brands and with good reason. Their 800 range offers all three boiler types (system, combi and conventional). In addition, Baxi boiler costs are amongst the lowest, meaning there is a suitable option for any home!

The Baxi 800 2 is the 2nd generation of the 800 model and comes in a range of output sizes. Available from 16 – 36kW, this boiler is capable of heating the smallest spaces to large homes with over 20 radiators. 

Their combi version is also compatible with smart controls (Baxi uSense), so you can control your heating settings wherever you are right from your smart device. 

An ‘Adey Micro2’ magnetic system filter is also included with this model, which is a great additional feature to keep your heating running cleanly and efficiently. For even more peace of mind, Baxi also offers a 10-year warranty with this boiler.

Other features: 

  • Pre-heated condensate pipe prevents freezing in winter
  • Certified to run on 20% hydrogen 
  • LPG compatible
  • Recyclable packaging

5. Viessmann Vitodens 100-W

Price range: £1,200 – £1,600
Available types: Combi, System and Conventional (Heat Only)

Viessmann is a highly acclaimed, global boiler brand, which won the ‘Which? Best Buy’ award in 2022, for its Vitodens gas boiler range. 

The Vitodens 100-W is a compact boiler, with stand-out technology inside. Viessmann’s use of innovative parts sets this model apart. 

For example, a stainless steel ‘Inox-Radial’ heat exchanger helps to efficiently convert energy into heat without risk of corrosion. This means longer-lasting parts and greater reliability. 

Also inside is a ‘MatriX-Plus’ burner, another stainless steel component with high-temperature resistance. This ensures efficient operation, lower emissions and quiet running.  

A further advanced component is the ‘Lambda Pro’ automatic combustion controller. This ensures a consistent, clean and efficient fuel-burning process. 
This boiler comes in output sizes from 3.2 – 32kW, making it suitable for most homes, and capable of providing for multiple bathrooms. An ErP A-rating and a warranty of up to 12 years, make this a boiler model you can count on for many years.

Other features: 

  • 20% Hydrogen ready
  • Wi-fi connectivity
  • ‘ViCare’ option, to control temperatures wherever you are 
  • Compatible with smart apps and digital thermostats
  • Attractive LED touchscreen

Find the best gas boiler for your household in the UK

Using our simple top 5 list of the best gas boilers, we can guarantee that there will be a boiler model here to suit every need. Each brand is highly reputable, the models are reliable and the warranties on offer can see you through a substantial time period. 

When it comes to making a decision, however, we always recommend getting multiple quotes from qualified installers to compare. This will enable you to get the very best advice on what your home needs, and also find the most competitive prices. 

It’s best to look for a local installer, as they can offer you faster and often cheaper quotes than national companies. If you’re ready to find and compare quotes and want to avoid the stress of searching the internet for hours, looking for someone you can trust – we’re here to help!

Using our simple form, in less than 1 minute, you can be on your way to receiving up to 3 free quotes directly from our network of trusted installers. You can then compare their offers and find the best deal for your new boiler replacement. 

What’s more, there’s no obligation to accept any of the quotes! So you have nothing to lose, but everything to gain. Simply click the button below to get started.

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Frequently asked questions

Becky Mckay
Written by Becky Mckay, Writer

Becky has been bringing quality advice to homeowners since 2021. As an experienced writer, she is keen to help our customers find the help they need when they need it.

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