A step-by-step guide

Step 1 - Book an appointment with an
              expert Heating Adviser

  • Choose a time and date that suits you, including evenings and weekends.

Step 2 - The Heating Adviser visit

  • Your Heating Adviser will call ahead to let you know they’re on their way.[1]
  • They’ll carry out a detailed assessment of your home and talk you through your boiler and heating options.
  • They’ll give you a fixed price quote and explain your payment options.
  • The visit should take 90 minutes to complete.
Choosing a new boiler – how British Gas can help

Choosing a new boiler – how we can help - 2:53

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At British Gas our team of experts fits more boilers and central heating systems than anyone else in the UK.

Here's how we do it.

Your first step is to book an appointment for us to come and visit you – you can do this online or by giving us a call.

Because every home is different, we'll send out one of our Heating Advisers to provide a quote in your home.

We can visit at a time that suits you – even if that's an evening or a weekend.

The appointment will last about one and a half hours, after which you'll receive an itemised quotation. There's no cost for this and no obligation.

They'll start with a walk around to understand your existing setup and do some basic checks and tests to determine the best heating solution for you, but also to ensure your home is safe.

They'll talk you through your options and help you make the best decisions for your home.

Our boiler payback tool enables you to see the amount you can expect to save on your energy bill if you install a new boiler, which could be up to £310 a year.  The payback tool  can also show you how long it will take for the new boiler to pay for itself in energy bill savings.

Our Heating Advisers are experts on more than just boilers.

For example, you may be eligible to be upgraded to smart meters.  This means you will be able to see exactly how much energy you're using, as you use it, in pounds and pence, and receive accurate bills without having to submit meter readings.

And Hive Active Heating™ allows you to control your heating and hot water from your phone, tablet or computer, so if your plans change – or the weather does – you can adjust your heating rather than waste money.

They can also talk you through the benefits of insulation, solar PV and make sure you're on the best energy tariff for your home.

If you're happy with the quote and want to go ahead, your Heating Adviser will talk you through the flexible payment options, including monthly payments by Direct Debit.

You may also be eligible for the Government's Green Deal Scheme, which allows you to pay for energy saving home improvements via your electricity bill.

Your advisor will then start making the delivery and installation bookings for you, all of which will be confirmed by text or email.

And remember, the price we give you is the price you pay, no matter what.

Step 3 – Arrange an installation

  • If you decide to go ahead, your Heating Adviser will arrange a convenient installation date.
  • You’ll receive contact details for our Customer Support Team, should you need to get in touch.

Step 4 - Your new boiler installation

  • Your Engineer will call beforehand to introduce themselves.
  • Before they start, they will run you through some important safety information.
  • Once your installation is complete, your Engineer will give you a full explanation of how to use your new boiler and controls.
  • They’ll leave your home clean and tidy, and will arrange the disposal of all waste including the old boiler.
Installing a new boiler – how British Gas do it

Installing a new boiler – how British Gas do it - 2:07

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Your Heating Adviser will leave you with a number for your dedicated customer support team. They'll be your main point of contact from now on if you have any questions.

The next step is delivery of the boiler on the agreed date. We try and do this the day before installation so our Engineer can start work as soon as they arrive. You'll get a call the day before to confirm and a call from the driver when he’s on his way.

You'll also get a call from your installation Engineer the day before to introduce themselves and let you know when they'll be arriving.

Most installations take between one and two days and our number one priority is the safety and care of your home.

As soon as we arrive we'll explain exactly how we're going to do the job, make sure you're happy and then discuss any safety points you need to be aware of.

If you want to go out and leave us to it – that's fine.

We'll then lay dustsheets and move any pieces of furniture we need to.

Once installation is complete, we'll clear up any mess with our own vacuum cleaner and leave your house as we found it.

We'll then go through heating controls and how everything works to make sure you're happy before we say goodbye.

Your Engineer will give you a call a few days later to make sure everything's going well, but remember, you can always call your customer support team.

Because this is a British Gas installation, all boilers come with a 12 month Homecare 200™ package – our repair and maintenance service that covers your whole system with a 24 hour helpline 365 days a year.

So there you have it. An end-to-end quality service, expert advice on your home's energy, a guaranteed price and the peace of mind of quality aftercare…

No wonder more people choose British Gas to install their new boiler than anyone else.

Step 5 - After your installation

  • You’ll get HomeCare 200™ for a year worth £228, which includes service and repairs for your boiler, controls and central heating system.
  • You’ll also receive a year’s free plumbing, drains and home electrical cover.[2]
  • If you need help, you can call our Customer Service Team 24 hours-a-day, 365 days-a-year.


Book an appointment for a British Gas Heating Adviser visit today.

Types of boilers


Find out more about different boiler types and your options.

Boiler range


We have a range of boilers to suit your home.

Does your boiler need replacing?

Find out how much you could save with a new boiler.

Reasons to choose British Gas

We guarantee a fixed price

When our Heating Advisors quotes a price, we guarantee it won’t increase even if there’s unexpected work to do.

Boiler cost calculator

Free aftercare included


This includes service and repairs for your boiler, controls and central heating system for one year.

Latest offers

Priority installation dates

If you’re without heating or hot water, we could start installing a new boiler as early as the next day**.

Book an appointment

** Limited service applies during public holidays and exceptional peak demand. An additional charge may apply where weekend installations are requested.

Your home is clean and safe

Our Engineers leave your home neat and tidy and will arrange the safe disposal of all waste.

Step by step guide

British Gas New Heating Limited is an Introducer Appointed Representative of British Gas Services Limited which is authorised and regulated by the Financial Conduct Authority for its insurance mediation activities. Registration number 490568.

* 5008 respondents between 1st July - 31st July 2014.

[1] Excludes contracted out services.

[2] Free plumbing, drains and home electrical cover is available to quotes issued by 31st December 2014, will be applied after boiler installation and is available for domestic properties only.