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BeFix installs new boilers across every London borough, from combi swaps in a one-bed flat to full system installs in a family house. Every job is carried out by our Gas Safe registered engineers (No. 967796), with prices from £1,500 depending on the boiler type and the work involved. A written, itemised quote follows a free survey before anything is booked, and finance is available if you’d rather spread the cost.
All-in-one and compact, the usual fit for flats and smaller conversions.
Combi installs usually cost less than system or regular boilers, mainly because there’s no cylinder to fit or extra pipework to run. A straightforward swap in the same spot is the cheapest job on the list; move the boiler, upgrade old pipework, or improve access through a loft hatch, and the price climbs from there. We always survey the property before quoting, so the figure you’re given reflects the actual work, not a generic estimate. If spreading the cost helps, finance is available on approved applications.


An engineer visits to check access, existing pipework and the best position for the new boiler.
A clear price breakdown before any work is booked in — no vague "from" figure.
Most straightforward swaps take around 8 hours and are completed within a single working day; more complex jobs may need longer.
All work carried out under registration number 967796.
Every new boiler is commissioned, tested and registered — a gas safety certificate is available if you need one.
12 months' workmanship cover from BeFix, plus up to 12 years' manufacturer warranty depending on the model.
Across London, we fit and service every major boiler brand, and hold Accredited Installer status with four of them: Worcester Bosch, Baxi, Vaillant and Ideal.
Accreditation means these four manufacturers have checked our installation standards directly, which is usually the route to their longer extended warranties. Renewing the wider heating system at the same time? Our central heating installation team handles radiators and pipework alongside the new boiler.

Number 967796, verifiable on the official Gas Safe Register at any time.
for the duration of every job.
per engineer, including older, awkward-access properties common across London.
Registration number 967796 is checkable on the official Gas Safe Register at any time, not just something we print on the page. Every job is covered by our public liability insurance too. Between them, our engineers have fitted and serviced boilers in older, awkward-access London properties for more than ten years, so whatever your building throws up, chances are we’ve seen it before.




Posted on Google![]()
Kate HendersonTrustindex verifies that the original source of the review is Google.
I’d had various concerns about my aircon system at my flat in NW2 not working effectively, and was very relieved when Befix were able to offer a prompt service appointment. Communication in advance of the appointment was good and engineer Vahid arrived punctually and worked carefully and thoroughly, ensuring the whole system was in good working order. He was clearly knowledgeable about all kinds of technical issues, friendly and adaptable, and I had confidence that he was attending to everything properly. I am not perhaps very familiar or up to date with what I should expect to pay for this kind of work. I think the price was probably fair - but I would advise checking in advance to make sure you are happy with the arrangement. I was left feeling relieved my system was now in good working order, and will certainly consider the company again for future work, including more ambitious projects.Posted on Google![]()
Beryl RamsayTrustindex verifies that the original source of the review is Google.
Excellent job, very thorough and pleased with the end result.Posted on Google![]()
Kornwipha SutthiphonphongTrustindex verifies that the original source of the review is Google.
Great job on fixing the boiler. Fast and efficient quick call out for Slone square area 👏Posted on Google![]()
Asim Cengiz AkbulutTrustindex verifies that the original source of the review is Google.
Needed certified gas safety experience in Finchley Central, N3. Came out on emergency call and did a great job. V happy, will call againPosted on Google![]()
oja cTrustindex verifies that the original source of the review is Google.
Vahid was kind, professional, and incredibly good at his job. He came quickly and flexibly to west london/ Kensington area— and worked out the most economic and quickest way to help with a boiler that lost its pressure. Could not recommend this service more!Posted on Google![]()
Sev ZachariaTrustindex verifies that the original source of the review is Google.
Brilliant service very fast Aircon unit installed.Very reasonably pricedPosted on Google![]()
NICHOLAS PEARSONTrustindex verifies that the original source of the review is Google.
Excellent in every respect. If you need a top plumber in South East London then BeFix come highly recommended. A tricky job which had not been solved by previous professional, was immediately diagnosed by BeFix which has saved me money and time. Efficient, punctual, and reasonably priced.Posted on Google![]()
Anthony PisarskiTrustindex verifies that the original source of the review is Google.
Amazing quality of work. Was lucky enough to have a same day appointment. Provided great advice, arrived on time and completed the work exactly as promised. Very reasonably priced (having received a quote for over 2x) Would absolutely recommend every time. Very friendly and professional! Thank you so muchPosted on Google![]()
Samin MoghimiAslTrustindex verifies that the original source of the review is Google.
Vahid was very fast to respond to my quote request and to set a time for his visit. He fixed our boiler in a very efficient and professional manner. He already had the replacement part with him beforehand which was very helpful. I would 100% recommend BeFix!Posted on Google![]()
TaysirTrustindex verifies that the original source of the review is Google.
Took some trial and error and a few visits, but in the end it was done. He visited on short notice which was very helpful.
We cover every corner of London, including:
North London
South London
East London
West London
Central London
Most installations cost between £1,500 and £3,750, depending on the boiler type and how much work your property needs. Combi swaps sit at the lower end; system and regular boilers with pipework changes cost more. We confirm the exact price with a written quote after a free survey.
Most straightforward swaps take around 8 hours and are completed within a single working day. Jobs that involve relocating the boiler or upgrading old pipework can take longer, and we'll flag that during your survey.
Typically, no. Most installations are covered under permitted development. If you're in a listed building or conservation area, we'll check this during your free survey before quoting.
It depends on your budget, property size and fuel type. We'll suggest a tailored option after assessing your home, rather than pushing one brand by default.
Yes. BeFix is Gas Safe registered under number 967796, which you can check yourself on the official Gas Safe Register at any time.
Every installation includes 12 months of workmanship cover from BeFix, plus up to 12 years' manufacturer warranty depending on the model.
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