Boiler Replacement

Boiler Brands in the UK

It can be overwhelming when you need to replace your boiler, as there are so many options out there when it comes to brands.

We’ve put together this guide to help you choose which one will work best for you, so you can buy your next boiler with confidence.

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Combi, system, and regular boilers

Before you choose a boiler brand, you need to choose the type of boiler that suits your lifestyle. All new boilers that are fitted in the UK after 1st April 2005 must be condensing models.

Condensing boilers are designed to minimise the heat that is lost up the flue, making them much safer, efficient, and better for the environment.

A professional boiler installer will be able to help you decide which system will be best for you.

But what are the choices?

Combi Boiler

A combi or ’combination’ boiler takes its name from the fact it is a hot water and central heating system together in one unit. Water is heated via the mains so there is no need for water tanks.

System and regular boilers

A system boiler takes water directly from the water supply, which is then heated using your homes energy source. The hot water is stored in a tank until it is needed in the home. It is also used to provide heat for your central heating system.

What are the best boiler brands in the UK?

We’ve put together a list of the best boiler brands in the UK, so you can easily compare them, and decide which one is best for you.


Baxi have been in business since 1866. They offer industry-leading free parts and labour warranties, for complete peace of mind.

Worcester Bosch

Worcester Bosch are an award winning company and is one of the UK’s leading boiler manufacturers. They also hold the Royal Warrant to supply heating products to the Royal Family.


Vaillant is a household name with a great reputation. They are a German company, but they manufacture in the UK, so parts are readily available, and delivery is quick.

Glow Worm

Glow-worm have been working to provide ‘top quality, reliability and exceptional durability’ for over 75 years. They have a great variety of boiler systems available including different sizes and offer an extended warranty package.


Viesmann offers exceptional German engineering combined with British customer service and quality. They are sold internationally and use cutting edge technology to produce efficient, quiet, and compact boiler systems.

Ideal boilers

Ideal boilers developed technology in the 1980’s that shaped the way modern boilers are made today. They focus on producing reliable and durable boiler systems that are competitively priced to suit all budgets.

Alpha boilers

Alpha boilers take traditional business values, and combines it with modern heating technology to offer high quality boilers with excellent service from start to finish. They run regular tests on their products to ensure consistent quality and reliability.

Finding and comparing boiler installers

As the homeowner, it is your responsibility to arrange for the boiler to be installed once it has been purchased from the manufacturer.

The manufacturer may give you a list of trusted installers or will suggest one that they work closely with.

Should I choose a local or national installer?

There are a variety of companies to choose from when it comes to installation of your boiler. You may feel more comfortable choosing a well-known national company, or you could choose a local installer that may offer a more personalised service.

You are likely to get a longer warranty with a national brand, but local installers may be cheaper and will be able to respond to any problems quickly.

Gas Safe engineer

Whoever you choose to install your boiler, they must be gas safe registered. It is particularly important to check their qualifications as this means they will have the knowledge and experience to complete the installation safely.

Using an engineer that is not gas safe registered will also invalidate your warranty.

Guarantees and warranties

Guarantees and warranties are technically very similar. You will have different warranties and guarantees for the parts and the installation, so ensure you check the T’s and C’s when making your purchase.

  • Check what the manufacturer is offering and look for a minimum of 10 years.
  • Warranties and guarantees may come with certain conditions such as annual servicing.
  • A warranty is more like an insurance policy for the reliability of the parts.
  • A guarantee is a contract that means the manufacturer will sort any repairs or replacements within a given time period.
  • A guarantee gives you peace of mind that your boiler will be repaired if there are any issues.

Get quotes from boiler installers

You’ll need to find a gas safe engineer to install your boiler safely and professionally. You can easily find local or national installers by searching online.

You can also check their qualifications and read customer reviews, to ensure you’re choosing a company you trust.

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> No obligation quotes - Takes only 2 minutes