Best Boiler Brands in the UK: Top 8 Boiler Manufacturers in the UK

Are you on the lookout for energy-efficient and affordable boiler brands? But do you keep getting confused by the numerous types of boilers available on the market? Do not worry,  this comprehensive guide will help you compare different boiler manufacturers and choose the best boilers for your home. 

We curated this list by researching each boiler manufacturer’s affordability, energy efficiency, warranty and customer reviews. After you finalise a reliable boiler model, to get the best value for your money, it is recommended that you should contact an experienced installer. However, the process of finding a trustworthy local installer is a tedious one that can take up hours of your time. 

Thankfully, you can let us do the hard work for you by requesting a free quote. It’s much easier and quicker to fill out our short form than searching for installers on your own. 

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In this section, we will walk you through the factors that we considered to select the top boiler manufacturers in the UK.

Let's take a look at the best boiler brands in the UK, which are also the market leaders, and compare them in terms of warranty, reviews, and prices. 

These companies, such as Worcester Bosch, Alpha and Viessmann, offer boiler models suitable for all kinds of heating needs— combi, system and regular boilers. The following comparison table will help you understand the best boiler brands in detail:

*The prices are an estimate and exclusive of installation costs. Prices include gas, oil and LPG models.

The following sections detail each company’s legacy, top boiler models and reviews. 

Worcester Bosch was established in the 1960s, and thirty years later, it was merged into the Bosch Group. With an efficiency of around 94%, Worcester Bosch boilers are one of the most effective solutions to high energy costs. Its products are known for their reliability and efficiency, with most boiler models having an ErP label of A and above. 

The company offers a warranty of up to 12 years for new boilers and a stress-free installation process within 24 hours. In short, the Worcester Bosch boiler makes for an excellent heating solution with an average price range of £600-£3,800. Here are some of the best-selling boiler models from this brand:

Alpha Heating Innovation is a UK manufacturer that was established over 50 years ago. Alpha is one of the leading companies in the heating industry, offering innovative solutions such as modulating burner technology and quiet operation. 

Alpha has the ISO 9001:2000 certification, which guarantees international quality management principles focused on customer satisfaction, process efficiency, and continual improvement. The company has a strict quality control policy and even runs random daily checks on its products. Moreover, Alpha offers a 10 year warranty on its boilers and has one of the highest customer ratings of 4.7 on Trustpilot. 

Most of its products have an efficiency of 92% and higher, which can help you reduce your energy bills. Here are some of the most popular boiler models of Alpha:

Biasi boilers were first introduced by Leopoldo Biasi in 1938 when it was just a small thermomechanical manufacturer. In the 1940s, Biasi started to focus on domestic heating systems.

Now the brand offers regular, combi and system boilers in different sizes and at competitive prices. Biasi has certified installers and great after-sale support to ensure a smooth installation process, along with a standard 2 year parts and labour warranty, which can be extended up to 5 years. The brand also has a Trustpilot rating of 3.5. 

 Here you can find some of the most popular cheap boiler models offered by Biasi in the UK:

Ariston is part of the Ariston Thermo Group, an Italian corporation that manufactures heating systems. Its products are marketed via 53 companies like Chaffoteaux, Atag, Elco, Régent, and Racold. It has more than 22 production sites and branches in 150 countries.

Ariston offers a vast range of boilers for domestic usage with an energy efficiency of up to 94%. The company has a minimum 2-year warranty for its boilers which reaches up to 12 years for some new products, along with a Trustpilot rating of 3.7. 

Here are some of the top boiler models they offer:

Baxi was established by Richard Baxendale in 1985 and is now part of BDR Thermea. Its heating engineers are known for bringing forth innovative heating solutions in both residential and commercial areas at an affordable price. 

With an average energy efficiency of 92% combined with the inexpensive price ranges, Baxi stands out as a leading heating solutions brand in the UK. It has a reliable customer service team and a rating of 4.6 on Trustpilot. Here are some of the top-selling boilers of Baxi in the UK:

Ideal Heating is a renowned British company with more than 110 years of experience in manufacturing heating systems. Ideal is one of the best choices for those who’re looking for an eco-friendly boiler as many of their models are endorsed by the Energy Saving Trust. The brand also has a Trustpilot rating of 4.8. 

Ideal’s boiler efficiency is above 90%, and all of its products have an energy rating of A+. Ideal’s boiler models are also equipped with advanced features such as compatibility with smart controls, frost protection technology and Quiet Mark Approval for noise reduction. 

Here are some of the most popular boiler models of Ideal Heating:

Viessmann is a German company that was established by Martin Viessmann in 1917. Today, the company is active in 74 countries, and its production is based in Germany to ensure quality engineering. 

Viessmann has a diverse range of products with excellent energy labels. With 98% energy efficiency, the Viessmann Vitodens 200-W boiler is one of the most energy efficient boilers on the market. Viessmann boilers are comparatively more expensive as the company uses high quality stainless steel components. 

Viessmann offers up to 7 years warranty for some of the products, which can be extended up to 12 years. Viessmann also has great after-sale support and responsive customer service and has a Trustpilot rating of 4.4. You can look at some popular boiler models by the brand in the following table: 

The last brand on our list is Vaillant, another German company established by Johann Vaillant in 1874. Recipient of the German Quality Award in 2023, the manufacturer has branches in over 60 countries today. 

Vaillant offers up to 10 years of warranty and has a wide range of versatile models with advanced technologies and eco-friendly designs. The company also has a Trustpilot rating of 3.8. In the following table, you can find some examples of Vaillant boiler models:

The next step after choosing a boiler model is the installation. However, getting quotes from several companies and comparing them together might be a time-consuming job. 

Here at GreenMatch, we can help you in finding a trustworthy installer in no time. This way, you save your time and energy and get the best deal without paying more. You can start by filling out a short form.

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When buying investment intensive products such as boilers, you need to do your research and make sure the boiler companies have good reputations and relevant licenses. For example, the CE Certification ensures that the company complies with EU safety and environmental protection standards.  

Apart from this, you should steer clear of companies that offer relatively shorter warranties and unsatisfactory customer service. For instance, a Trustpilot rating below 3 signals unreliability. 

While the market is flooded with options catering to all heating needs, it is important to evaluate your situation and choose an appropriate brand within your budget. You can start your search by sifting through the brands mentioned in the table, such as Worcester Bosch, Baxi and Ideal, to get familiarised with reliable boiler manufacturers. Depending on your unique situation, choose a brand that adds value to your home. 

Before buying your boiler, you have to compare different boiler quotes from different companies to choose the best offer available. You have to also ensure the installers have an OFTEC licence for oil boilers and a certification from the Gas Safe Register for gas boilers, the official body for gas registration in the UK. This can be a time-consuming and stressful task for a person who doesn’t know much about different boiler brands and relevant certifications. 

But don’t worry. With our free quote service, you can make this process easy and stress-free. You don’t need to waste hours of your time searching for boiler brands on your own. Just send us your request by filling in our short 30-second form to receive up to 3 free quotes from reliable local installers. 

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