123 HEAT
123 HEAT

Get a Next Day Boiler Installation

Boiler Installation London

Need Your Boiler Replaced and Upgraded? We’ll get that done, with minimum fuss.

Affordable boiler installation across London and a prompt turnaround on all your boiler upgrades. You can trust 123 Heating engineers to get your heating up and running, fast.

Gas Boiler Upgrade or Service Needed?

Contact Us Below Or Call Us Now!

    Call the friendly 123 Heat team

    Phone 0800 061 4762

    Order Your Boiler Today

    Bromley boiler installations

    London Boiler Installations

    We created 123 Heat with a clear goal in mind; to offer our customers across London the fastest and simplest way to replace and upgrade a boiler. So that’s what we do. We normally fit your new boiler the next working day, or at a time that suits your schedule.

    How do we make this happen? 123 Heat engineers will ask for some info about the boiler you’ve got at the moment, and your home, to find out which boiler replacement would be right for your needs. Then we’ll select the right pricing plan – our 0% finance plan offers 12 monthly instalments with a minimum 10% deposit.

    Then you choose the best time for our Gas Safe registered engineers to carry out your boiler installation in your home. Sorted!

    Get Your Fixed Price Today

    Next Day Installation

    Up to 10 Years Warranty

    Gas Safe Installers


    0% Finance over 12 months

    123 Heat for friendly, fast and affordable boiler installation in London

    Call us on 0800 061 4762

    My boiler wasn't heating the water properly for about a week. It would go hot and cold constantly when ever I had a shower. Found 123 heat online and booked an appointment. I had a call from a engineer straight away to confirm my booking. The following day James the engine turned up on time as agreed and fixed the boiler within 45 minutes. Was very happy with the service and price. I would definitely use them again and recommend them to friends and family.
    Benjamin Selby
    Just had a Worcester Bosch combi installed in my loft. The engineer was friendly, efficient and made a fantastic job of all the pipe work and he took all the rubbish away with him too. I would highly recommend 123 Heat.
    Fantastic service from start to finish. British Gas condemned my boiler and said it was beyond economical repair. I searched online and found 123 Heat. Website is easy to use and explains everything you need to know, I filled in the contact page after picking a boiler and I received a phone call within 5 minutes. Within half an hour I had a new boiler organised to be fitted the following day. Engineer arrived at 8am, polite, fitted the new boiler and cleared all rubbish. He also explained everything I needed to know about the boiler and controls before he left. I would highly recommend using this company.
    New combi boiler and three radiators fitted. High standard of work carried out, disposed of all rubbish and left the place clean and tidy. Polite, courteous and professional throughout. Highly recommended.