New boilers fitted from £1,930

Gas Safe registered installers in Hertfordshire. Get your personalised price in 60 seconds, with installation available as soon as tomorrow.
October offer

Free Hive Mini

Worth £240, with every installation. Book by 31 October.

Hive Mini smart thermostat
On ATAG boilers

Free 18-year ATAG warranty

That’s six years more than ATAG’s standard 12.

Front view of an ATAG boiler
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Customer reviews

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★★★★★

Matt fitted a new boiler for me

“we discussed which boiler would be best for my house and after a few discussions Matt fitted the new boiler in a day, very clean and tidy worker, very polite and knowledgeable. Would definitely recommend Matt to anyone needing a new boiler or Gas advice.”

Mr Martin Mansworth

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★★★★★

My boiler had a fault and replacement.

“My boiler had a fault and was visited within the hour to diagnose the issue. I got an appointment 3 days later for a full replacement. Matthew explained everything to me, gave me my options, and did a very thorough job and left everything neat and tidy, my house is toasty now! Would definitely recommend and use again.”

Katy Woodward

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★★★★★

“Matt is an extremely professional heating engineer, who carried out the works (new boiler installation) over a 2 day period with minimal disruption. Nothing was too much trouble and when faced with any problems he overcame them. Our installation was not straightforward but the challenge did not faze him. His aftercare service has been second to none. We felt completely at ease leaving him unattended in out property. He is extremely knowledgeable and reliable. We would highly recommend Matt as his service and workmanship is exemplary.”
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Cath Thorley

Google
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★★★★★

“I just wanted to take some time to give a personal review of Matthew and his team at Boiler Boffin for our recent boiler installation. From the start Matthew approached our install with a high degree of professionalism, he listened to our requirements, concerns and made a real effort to address all points. He came back with a recommendation for a boiler system we hadn’t previously considered. He offered a detailed specification which clearly had come from time spent researching the right boiler for our home. Once we had agreed the manufacturer choice, spec and price (worth noting he was the most competitive of all our quotes) we agreed a date for the install and he gave us assurances of timescales for the install in order that we had as little inconvenience as possible. This was really important as we have a young family and everything about the job went to plan. Nothing was too much trouble, any questions we had were answered promptIy and he was very clean and tidy with his work practices. I would have no hesitation in recommending Matthew at Boiler Boffin and would like to thank him for such a high standard of work.”

Paul Herbert

Google
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★★★★★

“We have really been very pleased with Boiler Boffin and their installation of new boilers and replacement radiators, a two and a half day project. It was clearly well planned and carried out with professional expertise, and consideration of its impact on us while we stayed out of the way except for providing coffee and tea regularly. Matthew kept us informed about the technology, and both engineers cleaned the areas in which they worked continuously.Recommended!”

Mike Watson

Google
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★★★★★

“Matthew installed a new boiler for us, after visiting us on an emergency call during the Covid-19 lockdown when our old one finally packed up. First impressions were excellent; he was polite, considerate and friendly. We had a real challenge with gaining access to the flue but Matt sorted a cherry picker and the builder as part of the service, saving us some real headaches! The work was completed quickly and to a high standard and (importantly) he left the house as tidy as he found it. An absolute professional that I’d have no reservation in recommending.”

Dan Cuomo

Google
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★★★★★

“These guys recently installed a new boiler for me plus changed around some pipework in the kitchen. Very reasonably priced and entirely professional when they were in the house (chatty and friendly but were quiet and respectful which was great as im zoom in the adjacent room most of the day).”

Benite Whiles

Google
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★★★★★

“I highly recommend Boiler Boffin; I needed a new Boiler and the service Mathew provided was exceptional. He was extremely attentive on the phone and explained everything I needed to know and scheduled me in within 24hrs vs the 5 days I had to wait with other providers. The boiler he fitted was not only the cheapest of all the quotes but after doing my own research I fount that it was the highest quality (viessmann) and with the longest warranty and yet I still saved nearly £800 compared to British Gas. RESULT! Mathew was an absolute gentleman from start to finish, I was so impressed I asked Mathew to install a Smart thermostat (as I had saved some £££), Mathew talked me through my options and in the end I chose a Nest but Mathew can install Hive also - AGAIN he was cheaper vs any other provider for this and happens to be an expert on installing both systems! Look no further! No hidden costs, top quality service, long warranty! Thanks again Mathew!”
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Russell Simpson

Google
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★★★★★

Let me start by saying i am one of…

“those customers that researches over and over until i end up not purchasing so i am hard to convince, BUT, Boiler Boffin put me at ease straight away.Matthew was very prompt with his response and as i had done my research i decided on an ATAG boiler of which Matthew is an accredited installer. He certainly knew his stuff to put me at ease straight away and made committing to having a new boiler very easy and boy am i glad he did! The day of the fitting was a breeze and both Matthew & Mark did a fantastic job for an equally fantastic price, i cannot recommend these guys enough and i rarely leave feedback which says massive amounts for my customer satisfaction. Thank you again Boiler Boffin! M Jones”

M Jones

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★★★★★

Reasonable price and hard working

“We recently had Matt change an old cylinder, water tank and conventional boiler system to a combi. It was quite a job and we are so impressed with the end product. His service is a really reasonable price and would really recommend. Thanks for your hard work 🙂”

Megan

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★★★★★

The best choice in the area

“We changed our boiler around 2-3 years ago and have had annual service by the company. We are happy with the Wonderful experience and service, great quality of the boiler. Especially Matthew, the engineer is very helpful and knowledgeable. Always provide valuable advices and excellent work. Highly recommend of this trustworthy company and engineers. We install new boiler when we move this year and definitely will continue using their service.”

Gloria

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★★★★★

“Boiler Boffin installed my Viessmann boiler and Hive. The service was professional, courteous and everything was installed to a very high standard. Im very happy with my heating system and would highly recommend Boiler Boffin to friends and family for all of their heating needs.”
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Rebecca Newman

Google
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★★★★★

“Very happy with the workmanship and the price for my new boiler and hot water tank. The 2 installers were very helpful. Thank you”
Richard Atwood's profile photo

Richard Atwood

Google
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★★★★★

“Installed our new boiler - was incredibly helpful. Cannot recommend more!”
Freddie Garnett's profile photo

Freddie Garnett

Google

From £1,930 inc VAT · Free Hive Mini on installs booked by 31 October · Up to 18 years’ warranty on ATAG

Your boiler, configured around your home

Compare boilers and personalise your installation online, then let an experienced Gas Safe engineer check the details. You get the convenience of online pricing with a fixed quotation based on your home and heating system.
  1. 01

    Compare your boiler options

    Answer a few simple questions about your home and existing heating system. We’ll show you the boilers available for your answers, with clear estimated installation prices so you can compare your options and budget.

    You don’t need to work out the technical requirements yourself. These prices are a starting point; your engineer’s survey confirms what is suitable for your home.

  2. 02

    Choose your controls and flushing options

    Once you’ve picked a boiler, choose from the available heating controls, system flushing options and upgrades. Your estimate reflects your selections, making it easier to see what each option adds to the installation.

    You can explore the choices before committing. We’ll discuss them with you during the survey and advise on any changes your system needs.

  3. 03

    Book your free engineer survey

    With your detailed estimate ready, book a video survey or home visit with one of our experienced Gas Safe registered engineers. We’ll assess your existing heating system, discuss how you use heating and hot water, and check the work needed for your installation.

    After the survey, we’ll send you a full fixed quotation. You can review the suitable boilers, controls, flushing options and any additional work identified by the engineer, and configure the installation around your needs.

  4. 04

    Accept your quotation and book online

    When you’re happy with the options and the agreed price, accept your quotation online and book an available installation date. A 50% deposit secures your booking, with the remaining 50% payable when the installation is complete.

    We’ll confirm the date and planned work with you before installation, so you know what to expect when your engineers arrive.

An engineer checks the job before you book

Our online estimate is the starting point. Before you book, a Gas Safe engineer checks the job with you on a video survey or home visit.
We confirm the pipework, flue and installation requirements so we can order the right materials, allow enough time and quote for any extra work in advance.
That helps avoid missing parts, unexpected extra work and delays on installation day. You get a fixed quote checked by an engineer, without having to answer the technical questions yourself.

What your installation quote includes

Your fixed quotation lists the boiler, equipment and work agreed for your home. A typical installation includes:

Equipment and preparation

  • Your chosen boiler and the appropriate flue
  • A magnetic system filter
  • The system cleaning or flushing specified in your quote
  • Your selected heating controls and agreed system alterations

Installation and handover

  • Installation, testing and commissioning
  • Removal and disposal of your old boiler and installation waste
  • The applicable installation notification and manufacturer warranty registration
  • A demonstration of your boiler and heating controls
The final scope and total price are confirmed in your quotation. Controls, flushing upgrades, boiler relocation and other alterations are included as specified there. Pay 50% when you book and the remaining 50% on completion.

What happens on installation day?

We’ll explain the planned work, keep you informed as it progresses and treat your home with care. Straightforward replacements are usually completed in one working day; moving a boiler or converting a system can take longer. We’ll discuss the expected timescale during your survey.
  1. 01

    Arrival and protecting your home

    We normally arrive between 8am and 9am. Your engineer will message you with an ETA before travelling, so you know when to expect us.

    Before starting, we’ll lay dust sheets and use appropriate protective coverings for your flooring, furniture and surrounding areas. We’ll run through the day’s work and explain when your heating and hot water will be off.

  2. 02

    Safely removing the existing boiler

    We’ll drain the relevant parts of the heating system, isolate the necessary services and carry out the required checks before removing your existing boiler.

    A like-for-like replacement can usually move on to fitting the new boiler fairly quickly. Relocating a boiler or converting to a combi system may need more preparation and pipework. That work will have been discussed during your survey and set out in your quotation.

  3. 03

    Fitting the new boiler and cleaning the system

    We’ll fit your new boiler and connect the pipework, flue and agreed system components. We’ll also carry out the cleaning or flushing specified in your quotation. Depending on your system and chosen flushing option, this may take place before, during or after the boiler is fitted.

    We’ll keep you updated throughout the work and restore your heating and hot water as soon as we can. Where the installation spans more than one day, we’ll explain the arrangements in advance.

  4. 04

    Testing, commissioning and registration

    We’ll connect your chosen controls and test the boiler, heating and hot-water system to check they’re operating correctly. Your engineer will commission the boiler in accordance with the manufacturer’s instructions and complete the installation documentation.

    We’ll arrange the applicable Gas Safe installation notification and register your boiler with the manufacturer to activate its warranty.

  5. 05

    Showing you the controls and leaving things tidy

    Before leaving, we’ll show you how to use your new boiler and heating controls, including any smart thermostat you’ve selected. You’ll have time to ask questions and make sure you’re comfortable with the new system.

    We’ll then tidy the work areas, remove our equipment and take away your old boiler and the agreed installation waste.

Boiler Manufacturers and Brands we are accredited with

Your boiler is installed. Our support continues.

We’ll explain your warranty cover and help you keep on top of servicing. You can come back to the same local team for advice, annual maintenance and help with your installation.

Manufacturer warranty, registered for you

We register your new boiler with its manufacturer and explain the cover for your chosen model. Our ATAG installations include the upgrade to an 18-year parts and labour warranty. Your quotation confirms the warranty offered and its conditions, including annual servicing.

24-month workmanship guarantee

We provide a 24-month workmanship guarantee on our installation work, alongside your boiler’s manufacturer warranty. If a problem arises that is covered by our workmanship guarantee, we’ll put it right. Contact us if you need help with the installation.

A reminder before your first service is due

We’ll send an automatic reminder around 11 months after installation so you can arrange your annual boiler service. Servicing helps maintain safe, efficient operation and is a condition of your boiler’s manufacturer warranty. We can look after that for you too.

Before you book your installation

Is my online estimate a fixed quotation?
Your online estimate is based on your answers and selected options. After your free engineer survey, we’ll send a detailed fixed quotation for the suitable boiler and agreed work. Review and accept that quotation before booking your installation.
Can I choose a video survey or a home visit?
Yes. We offer video surveys and home visits with a Gas Safe registered engineer. For more involved work, such as relocating a boiler or converting the heating system, a home visit may be needed to assess the installation properly. We’ll help arrange the appropriate survey.
Can I change my boiler, controls or flushing option?
You can explore options in the online estimator and discuss them during your survey. Your fixed quotation lets you review the available choices suitable for your system, including any additional work identified by the engineer. Confirm your selections before accepting the quotation.
How soon can you install, and how long will it take?
Installation can be available as soon as the next day after your survey, depending on stock and available appointments. A straightforward replacement is usually completed in one working day. Relocations and system conversions can take longer; we’ll confirm the expected timescale and available date before you book.
Will I be without heating and hot water?
Your heating and hot water will need to be off for part of the work. We’ll explain the expected interruption and restore them as soon as we can. If your installation takes more than one day, we’ll discuss the arrangements with you in advance.
When do I pay for the installation?
A 50% deposit secures your installation booking after you accept the fixed quotation. The remaining 50% is payable when your installation is complete.
What is the difference between the two guarantees?
The manufacturer warranty covers your boiler under the manufacturer’s terms; its duration depends on the model and annual servicing is required. Our separate 24-month workmanship guarantee covers our installation work. We’ll explain the cover for your chosen installation and register the boiler warranty for you.

Covering Ware, Hertford, Hoddesdon, Stevenage, Welwyn, Hitchin, Letchworth, Buntingford, Cheshunt and Broxbourne

Explore your options. Start with your boiler estimate.

Compare boilers, choose your controls and flushing options, then book your free engineer survey. We’ll check the details and send your fixed quotation before you commit.
  • ✓ Monday to Friday, 8am to 6pm