We'll pay the VAT. 20% OFF the cost of a new boiler. Hurry offer ends 30th April 2015. Book an appointment

Boiler cost calculator

Get an estimate for buying a new boiler from British Gas. It'll only take a couple of minutes.

If we think it'll be a straightforward job to replace your boiler you can get an online quote to book and buy online. If not, you can book a free home visit from a Heating Advisor.

Payment options to suit you

Pay in full

You can pay for your boiler in full with major debit and credit cards or by cheque.

Once you agree to an installation, we’ll usually take a 10% deposit. The full amount is only paid once your new boiler is up and running.


Pay monthly

As a credit broker, we can arrange a finance agreement through Barclays Partner Finance, meaning you can choose to spread the cost of your new boiler over three to ten years.^

  • 14.9% representative APR.
  • No upfront deposit required.
  • Make additional payments at any time.

A representative example of a payment plan

† The rate of interest is variable downwards only. It cannot go up.

Reasons to choose British Gas

91% of customers recommend us

British Gas boiler installations are recommended by 91% of customers.

See how customers rate us

Pay monthly with no upfront deposit

We could help you spread the cost over 3-10 years or you could choose to pay in full if you’d prefer.

Payment options

Your home is left clean and safe

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

Step by step guide

Aftercare included

This offer includes HomeCare 200™ which provides service and repair for your boiler, controls and central heating system for one year.

Latest offers

British Gas New Heating Limited is authorised and regulated by the Financial Conduct Authority for its consumer credit activities. Registered in England and Wales 6723244.

^ Availability of credit is subject to status, affordability assessment and credit checks.

* 91% recommendation rating is based on 1,463 customer responses collected between 09/12/2014 & 02/02/2015.

91% of customers recommend British Gas boiler installations*. See below for more detail on how they rate it. Reevoo

British Gas Boiler Installation Service reviews verified by Reevoo

3,734 reviews

Reviews from: Sort by:
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9 out of 10


A speedy & efficient job was done, however, we did have to call the engineer back the following day, due to a leak because of a bad solder joint. This was also resolved quickly, hence not the top score.
Published on: 23 April 2015
10 out of 10


From day 1 when my old boiler was leaking, the service given was superb . Fantastic boiler and engineer . Definite thumbs up !!!
Published on: 23 April 2015
9 out of 10


Very good at the time of installation very friendly and flexible and helpful-good job .
Unfortunately we had to call someone out a few days later because one of the joints was leaking.
However, very quickly rectified and no problems since.
Published on: 23 April 2015
3 out of 10


We began with a visit from a helpful heating engineer. This seemed to result in a straightforward recommendation for a new boiler with similar features to our existing old one. Unfortunately no mention was made of the fact that on the new boiler the temperature output from the boiler could not be controlled by the user, ie there was no boiler thermostat. Instead the heat output had to be set by the installer and we would then be stuck with it. We only discovered this once the new boiler was installed. At that point it was apparent that insufficient heat was being sent to the central heating radiators and we arranged for someone to come back and increase the heat output. This was done and for the moment (it is spring) all seems to be well, but it is not clear whether the system will produce what is desired in cold winter weather. Soon after this visit, however, a problem developed with the hot water which started staying on continuously and did not respond to the timer controls. An engineer came back to fix this and changed a valve. That sorted the hot water aspect but it became apparent that as a result of the work whenever the hot water was on the central heating also came on, whether or not it was set to do so - so we couldn't get hot water without at the same time getting a warm house. Another engineer came, changed another valve, and now, for the moment, the system seems to be working fine. But I wish now that I'd gone to an independent local company that could have provided a better service.
Published on: 23 April 2015
8 out of 10

Confirmed purchaser

Overall an excellent service. Our old boiler gave up, within a couple of hours fan heaters were delivered. The next day the gas advisor arrived, advice was excellent, 2 days later the boiler was fitted and working.
Only gave an 8 because the side panel of the boiler wasn't fitted correctly. However rectified next day.
Published on: 23 April 2015