UK Boiler Manufacturers: Products, Efficiency Ratings & Contact Info

Comparing the heating systems by several UK boiler manufacturers will go a long way towards helping you find the right boiler for your home.

You have no shortage of options when it comes to boiler manufacturers which can make it hard to know where to start. Fortunately, we’ve listed the main UK boiler manufacturers with some links to further information about each boiler manufacturer.


Address & Contact Details

Useful Links

Alpha Heating Innovation

Address & Contact Details

Alpha Heating Innovation
Nepicar House, London Road, Wrotham Heath, Sevenoaks, Kent, TN15 7RS
01732 783 000

Address & Contact Details

Ariston Boilers
Artisan Building, Hillbottom Road, High Wycombe, Buckinghamshire, HP12 4HJ
0333 240 8777

ATAG Heating Technology UK Ltd

Address & Contact Details

ATAG Heating Technology UK Ltd, 47 Castle Street, Reading Berks, RG1 7SR
01732 783 000

Baxi Heating UK Ltd

Address & Contact Details

Baxi Heating UK Ltd, Brooks House, Coventry Road, Warwick, CV34 4LL
0344 871 1525

Biasi UK Ltd

Address & Contact Details

Biasi UK Ltd, Unit 3, Leamore Lane, Walsall, West Midlands, WS2 7DQ
01922 714645

Ferroli Ltd

Address & Contact Details

Ferroli Ltd, Lichfield Road, Hillbottom Road, Branston Industrial Estate, Burton-upon-Trent, Staffordshire, DE14 3HD
0330 205 0005

FireBird Products Ltd

Address & Contact Details

Firebird Products Ltd, Phoenix House, Eastern Wood Road, Language Industrial Estate, Plympton, Plymouth, PL7 5ET
+44 (0)1752 691177

Glow-worm Boilers

Address & Contact Details

Glow-worm Boilers, Nottingham Road, Belper, Derbyshire, DE56 1JT
0345 602 2922

Grant Engineering (UK) Limited

Address & Contact Details

Grant Engineering (UK) Limited, Hopton Industrial Estate, London Rd, Hopton Rd, SN10 2EU
01380 736920

Ideal Boilers

Address & Contact Details

Ideal Boilers, National Avenue, Hull, East Yorkshire, HU5 4JB
01482 498660

Intergas Heating Ltd

Address & Contact Details

Intergas Heating Ltd, Building 94, Bay 1, Vantage Point, The Pensnett Estate, Kingswinford, DY6 7FS
01527 888000

Johnson & Starley Ltd

Address & Contact Details

Johnson & Starley Ltd, Rhosili Road, Brackmills Ind Est, Northampton, NN4 7LZ
01604 762881

Keston Boilers

Address & Contact Details

Keston Boilers, PO Box 103, National Avenue, Kingston Upon, Hull, HU5 4JN
01482 443005

Main Boilers

Address & Contact Details

Main Boilers, Brooks House, Coventry Road, Warwick, CV34 4LL
0344 871 1570

Mistral Energy Product Ltd

Address & Contact Details

Mistral Energy Product Ltd, Unit D4, Halesfield 23, Telford, Shropshire, TF7 4NY
01952 270082


Address & Contact Details

Baxi Heating UK Ltd, Brooks House, Coventry Road, Warwick, CV34 4LL
0344 871 1560


Address & Contact Details

Ravenheat, Chartists Way, Morley, Leeds, LS27 9ET
0113 252 7007

Vaillant Ltd

Address & Contact Details

Vaillant Ltd, Nottingham Road, Belper, DE56 1JQ
0345 602 2922

Viessmann Ltd

Address & Contact Details

Viessmann Ltd, Hortonwood 30, Telford, Shropshire, TF1 7YP
01952 675010

Vokèra Ltd

Address & Contact Details

Vokèra Ltd, Borderlake House, Unit 7 Riverside Industrial Estate, London, Colney, AL2 1HG
0844 391 0999


Address & Contact Details

Warmflow Engineering Co Ltd, Lissue Industrial Estate, Moira Road, Lisburn BT28, 2RF
028 9262 1515

Worcester Bosch Group

Address & Contact Details

Worcester Bosch Group, Cotswold Way, Warndon, Worcester, WR4 9SW
0330 123 9339


Address & Contact Details

Electrolux PLC, Addington Way, Luton, Bedfordshire, LU4 9QQ
03445 612 612

  To ensure that you make the right choice between all of the UK boiler manufacturers, we highly recommend that you get the advice of a professional heating engineer.

Requesting new boiler quotes from several Gas Safe registered heating engineers (or OFTEC registered in the case of oil boilers) is a great place to start. The quotes will recommend a particular boiler manufacturer (or choice of boiler manufacturers), and you can then set about comparing the background to each boiler manufacturer and the warranty on offer.

You can find a full list of boiler manufacturers here.

Which are the best UK boiler manufacturers?

The best UK boiler manufacturers on the market are debated by both heating engineers and homeowners. However, of the many boiler manufacturers to choose from, there are some boiler manufacturers which always top the polls:

  • ATAG
  • Baxi
  • Ideal Heating
  • Vaillant
  • Viessmann
  • Worcester Bosch

The reason these UK boiler manufacturers are frequently recognised as the best lies in their reliability, efficiency and comprehensive warranties/guarantees.

Find out more about the best boiler manufacturers.

How to choose a new boiler

As well as deciding on a boiler manufacturer and model, you’ll also need the right type of boiler to suit your home. Firstly, boilers can be fueled by either gas, oil, LPG, electricity, or wood pellets (in the case of biomass boilers). It’s highly likely that your home is best suited to a natural gas boiler. Over 80% of UK homes have a natural gas boiler and are suitable for installation in homes connected to the gas network. The alternatives – oil, LPG and electricity – are usually only considered when the property doesn’t have a mains gas supply.

Heating Fuel Property Type
Natural gas Any property connected to the gas network
Oil Off-grid properties with additional room for an oil storage tank
LPG Off-grid properties with room to store the fuel
Electricity Small properties with typically up to 10 radiators and 1 bathroom

In addition to the type of fuel, boilers are categorised into three types depending on how the system works: combi, system and regular. Let’s take a look at how each of these works.


The most common type of boiler installed in the UK is an all-in-one combi boiler which takes its water supply directly from the mains and heats water on demand. It is a compact unit, meaning there is no need for any external water tanks in the attic or airing cupboard.


Like a combi boiler, a system boiler takes its water supply from the mains, but it requires a separate hot water cylinder to be able to produce hot water for taps and showers.

Regular (also known as conventional or traditional)

A regular boiler gets its cold water supply from a large tank in the attic, and requires a separate hot water cylinder to produce hot water for taps and showers.

  Boilers come in different sizes which represents how much hot water they will be able to provide. The size of boiler – measured in kilowatts (kW) – you need will depend on how many radiators and bathrooms you have, as well as how many people live in your property. Installing a boiler which is too small will not be able to meet your hot water demand. Meanwhile installing a boiler which is too big will waste fuel and have higher running costs.

So, the fuel, type, and size of your boiler is (for the most part) already decided for you and/or a heating engineer will advise you on what you need, but you are in control of which boiler manufacturer you choose to buy.

The importance of comparing boiler manufacturers

The boiler manufacturer that you choose will impact the price you pay, the warranty you receive, and the general reliability of your boiler.

Whether replacing an old boiler or installing a brand new boiler in a new build, you are investing in one of the most important appliances in the home. Make the right choice, and the boiler should last between 10-15 years in good working order. Make the wrong choice, and you could be facing regular repair bills and breakdowns before having to buy a new boiler in less than 5 years.

When you consider that the average gas combi boiler installation costs between £2,000-£2,500 (and more for a system or regular boiler), it is clear that this is not an investment you want to have to repeat anytime soon.

Get free boiler quotes today

Getting advice from professional heating engineers will ensure that you choose a boiler that suits your home from the right boiler manufacturer.

Using Boiler Guide, you can get free quotes from up to 3 boiler installers in your area. Simply complete the online form and local installers will soon be in touch to provide no-obligation quotes for you to then compare.

It’s worth noting that some heating engineers exclusively install boilers from a certain manufacturer. This could see them promote a certain boiler brand but could also entitle you to a longer warranty period. This is because many manufacturers offer extended warranties when installed by an ‘approved’ installer.

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