A-rated new boilers. The UK's No.1 new boiler installer

A new boiler could cut your gas bill by up to 20%1 and reduce your home's carbon footprint. Upgrade now and we'll give you:​

  • 5-year warranty - if something goes wrong, we'll repair or replace for FREE​
  • Up to 4 years interest-free credit - spread the cost with £0 deposit 2
Find your new energy-efficient boiler​

What our customers think

Get a quote for a new boiler

Our expert heating advisers can recommend the perfect boiler for your home – or you can get an online quote if you prefer.

Talk to an expert

      A heating adviser will take a detailed look at your heating system in person or by video call and talk you through their recommendations.

      Book a free appointment

      Get an online quote

      Is your current boiler on the ground floor? You might be able to buy your new boiler online. Just answer a few questions first and we’ll recommend the best boilers for you.

      Get started

      3 steps to a new boiler

      We recommend

      Answer a few questions, or book an appointment, and we’ll find the best boiler for you.

      We install

      Our engineer will clean your system, fit your new boiler and show you how to use it.

      We recycle

      We’ll clean up thoroughly afterwards and take away your old boiler to be recycled.

      Get started

      Spread the cost of your new boiler

      Get up to 4 years’ interest-free credit to make your monthly payments more manageable. Pay zero deposit and choose from:

      • 2, 3, or 4 years interest free (0% APR) 2
      • 10 years at 9.9% APR for the lowest monthly payment 2

      Want to pay for your new boiler straight away instead? That’s no problem either.

      Why choose us for your new boiler?

      • We’re reliable
        Total peace of mind with the British Gas 5 Year Warranty

      • We’re efficient
        All our boilers are A-rated for efficiency and ready for a greener future. And we’ll recycle your old one too

      • We’re affordable
        Boilers for every budget, with a choice of ways to pay and interest-free credit for up to four years 2

      • We’re experts
        We install more boilers than anyone else, and we’ll help you find the perfect one for your home

      Buy your new boiler now

      Choose from the best boiler brands

      From Bosch to Ariston, Vaillant and Glow-worm, we’ll give you a wide selection of the top boiler brands to pick from – all chosen for reliability and performance.

      A-rated for energy efficiency

      We all want to live a bit greener. And British Gas can help you do just that. We only install the latest A-rated boilers with smart controls. That’s good for the planet – and it could help you save over 20% on your gas bill. 1

      Want to be even more sustainable? Learn more about heat pumps, the latest in low-carbon heating.

      Need boiler or heating repairs?

      If you’ve got a problem with your heating or hot water, we can get that sorted for you.

      View repair options

      Need a little more help? Our guides

      Frequently Asked Questions

      How long does an appointment with a heating adviser last?

      Video call appointments last around 30 minutes and in-home appointments will last about 90 minutes.

      Do I need to prepare anything for my video call appointment?

      During the video call, your heating adviser will ask you to show them the area around the boiler – and also some of the pipework around your house. To make sure you can do this easily and safely, please clear the area of obstacles and take special care to remove any trip hazards.

      How do I change the date of my heating adviser appointment?

      You can change or cancel your appointment using the link and verification code in the confirmation text or email we sent you.

      How do I cancel my heating adviser appointment?

      You can change or cancel your appointment using the link and verification code in the confirmation text or email we sent you.

      How do I accept my boiler quote?

      You can view and accept quotes using the link and verification code in the confirmation text or email we sent you. Please note – it may take up to 24 hours after your appointment before you can view your quote online

      Can I speak to someone about buying a new boiler?

      Absolutely. If you want to choose and order your boiler online, it’s possible to do it all on this website. But if you prefer to talk to one of our heating advisers, call us on 0333 202 9450 – Mon - Fri, 8am - 6pm and Sat, 9am - 5pm (with limited opening hours over public holidays).

      We want to improve our service for you, so we may record your call to help. Calls to 0330/0333 numbers will cost you no more than 01 or 02 numbers from landlines and mobiles. If you get 'inclusive minutes' with your package, calls to 0330/0333 numbers will be part of these.

      How long does it take to install a replacement boiler?

      Installing a new boiler usually takes anything from 1-3 days. The length of time varies depending on a few different factors:

      Is your new boiler the same type as your old boiler? If so, this will make installation more straightforward. If your old boiler was a combi, for example, it’s simpler and quicker to replace it with a new combi. Changing to a different type of boiler involves extra work for the engineer.

      Is your new boiler in the same place as your old boiler? Again, this will make installation simpler and quicker. Relocating a boiler creates extra work, such as changing the pipework.

      How much does it cost to install a replacement boiler?

      With British Gas, installation is always included in the price of your new boiler. Whether you’re ordering online or through one of our heating advisers, give us all the details and we’ll give you one easy to understand quote.

      To get started, click here.

      How much does a boiler service cost?

      When you get a new boiler installed with British Gas, your first year’s annual service is included as part of the package.

      But if you’re looking for a one-off boiler service for your current boiler, British Gas prices start from £99. You can find out more about it here.

      You might also want to consider taking out HomeCare cover. HomeCare provides an annual service for your boiler, as well as parts and labour for any repairs that are needed throughout the year.

      You can also take out extra cover in different levels, adding the same peace of mind for other areas of your home – such as your electrics, drains and plumbing.

      What boilers do British Gas fit?

      We have over 100 different models within our range, all produced by leading manufacturers like Worcester Bosch and Vaillant. Our boilers are selected to work with different sizes and types of properties, and all are chosen for quality, reliability and performance.

      Find your new boiler here.

      Who makes British Gas boilers?

      The boilers we install are made by the leading names in boiler manufacturing. Each has been chosen by our in-house experts to give our customers the best combination of value, reliability, performance and energy efficiency.

      How much is a new boiler from British Gas?

      The cost of a new boiler depends on a number of factors. Some models offer more premium and advanced features, while others are designed specifically for customers who are working to a tighter budget. For every boiler type and size, we aim to offer as broad a range of price points as possible, so that everyone can find the right boiler for their home and their budget.

      Get a quote for your new boiler here.

      What happens when a new boiler is fitted?

      Your engineer will drain down your central heating and hot water system so that they can disconnect and remove your old boiler. They will then clean out your heating system to get rid of impurities in the system pipework. They’ll then install your new boiler and check that everything is working as it should be. Once that’s done, they’ll talk you through the boiler and system controls and show you how to use it. Our step-by-step guide to new boiler installations explains everything in more detail.

      How much does a new boiler cost?

      New boiler costs will vary depending on the type of replacement boiler you choose, and your home’s heating and hot water needs. The cost of a new combi boiler for a small flat will be much lower than the kind of new boiler cost you’d be paying for a conventional boiler in a large, detached house with multiple bathrooms.

      Additional information

      1. Saving up to 23% based on the average gas bill of a semi-detached home when upgrading from a D-rated to an A-rated boiler. Source: https://www.britishgas.co.uk/home-services/boilers-and-heating/guides/boiler-efficiency.html 

      2. British Gas acts as a credit broker, not the lender and offers products from a panel of lenders. Payment options are subject to change without notice. British Gas is a trading name of British Gas New Heating Limited (No. 06723244), an appointed representative of British Gas Services Limited (No. 03141243) which is authorised and regulated by the Financial Conduct Authority (Financial Services Register No. 490568). Both companies registered in England and Wales. Registered office: Millstream, Maidenhead Road, Windsor, Berkshire SL4 5GD. Availability of credit depends on status and credit checks. Terms and Exclusions apply.