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Boiler Repairs, Service & Installations
in London & the Home Counties.

Boiler breakdowns, annual servicing, and new installations across London & the Home Counties. Gas Safe registered engineers. No call-out fee. Book today.

Book A Gas Safe Boiler Engineer

Book a Gas Safe Boiler Engineer

Gas Safe boiler repairs, service and installations you can trust

A boiler that won’t fire, an error code you don’t recognise, or hot water that’s gone cold halfway through a shower. Whatever the fault, it’s rarely fixed by turning it off and on again.

Every call starts with proper diagnosis. Our Gas Safe registered engineers check the system before recommending a fix, so you’re not paying to replace a part that wasn’t the problem.

Need a new boiler? We’ll tell you straight. We advise on repair versus replacement based on the age and condition of your system, then handle the full installation if that’s the right call.

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Mohammad Fazal (John) profile picture
Mohammad Fazal (John)
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Professional A Team These guys are brilliant, honest and do what they say. Not Just that, they also go extra mile. I highly recommend these guys

Owner's reply
Hi Mohammad , We really appreciate your feedback. And we’re delighted you’re happy with the service provided.
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M N profile picture
M N
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Never in my life have I come across a company this professional 👌🏻They explained everything clearly from the start and found and fixed the leak under my shower tray without breaking a single tile. They even put the shower tray and screen back perfectly like nothing had ever happened. Another company quoted me more than double the price, but these guys charged £727 and did an amazing job. Both engineers were amazing.Definitely the best around. Highly recommend.

Owner's reply
Hi Mr Maxwell, Thank you so much for your kind review. We really appreciate you taking the time to leave us your feedback. Our clients always come first,and we’re glad to hear you were happy with the service.
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A P profile picture
A P
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James arrived promptly on time. Extremely professional, quick and efficient. I have no hesitation in highly recommending Geldon and James. I will definitely contact them when I update my radiators later in the year. Thank you for an excellent service from start to finish.

Owner's reply
Hi Alison, Thank you so much for taking time to leave such wonderful feedback. We’re delighted to hear that James & Geldon provided a prompt, professional and efficient service and we will make sure your review its forwarded to our engineers 🙏🏻
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Angie G profile picture
Angie G
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Chris V was very helpful, and polite, turned up on time, did a thorough investigation to find out a damp patch on the carpet wasn't a pipe leak which was reassuring.

Owner's reply
Thank you so much for your kind review, We’re delighted to hear Chriss provided a thorough and reassuring service. We really appreciate your feedback and are always here if you need us again.
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Charlie Y profile picture
Charlie Y
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Jim, spent a lot of time finding the issue and double checking no other sources, doing numerous tests I have seen no other plumber do. Giving advice with a friendly smile, leaving with a happy customer. Thanks again

Owner's reply
Thank you for the wonderful review,Charlie! We’ll be sure to pass your kind words on to Jim. We really appreciate we could provide through the service you deserved.
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Andreea Ionela profile picture
Andreea Ionela
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Great work, highly recommended! 💯 Thank you so much!

Owner's reply
Hi Andreea, Thank you for your kind words! We’re delighted you had a great experience.
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Betty Cawely profile picture
Betty Cawely
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Aleks from PrimeFix found my leak in an area I would never have expected. It took some time and wasn’t a cheap job, but it was a very difficult leak to find. He worked carefully and managed to locate it with minimal damage. Big thanks to Aleks and the PrimeFix team for their hard work and professionalism. Highly recommended.

Owner's reply
Hi Betty , Thank you for your kind words and recommendation. We’re glad Aleks was able to find the leak and keep the exposure damaged to minimum. We really appreciate your support
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ray fahti profile picture
ray fahti
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Owner's reply
Hi Ray , Thank you for the feedback
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Matt Conroy profile picture
Matt Conroy
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Excellent work with promised support if needed after plumbing in our wunder underfloor heating. Would reccomend 👍🏼

Owner's reply
Hi Matt , Thank you and we really appreciate the feedback. Gland we would help and of course we’re always here if you need any further support in the future 🙏🏻
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Kirsty Brown profile picture
Kirsty Brown
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⭐️⭐️⭐️⭐️⭐️ We had an underground leak at my 88-year-old mother’s property and contacted Prime Fix Group Ltd. The engineer arrived promptly and, after carrying out an assessment, called me directly to explain the issue, the required work, and all costs involved, as he did not want to stress my mother with the situation. Very professional service from start to finish with no hidden fees at all. Everything was explained clearly before any work was carried out. We submitted the report to our insurance company, who recognised Prime Fix as highly qualified engineers. Highly recommended.

Owner's reply
Hi Mr Brown, Thank you for your kind words and recommendation. We’re glad we could help and make the process as stress-free as possible for your mother

Gas Safe on every job

Every engineer is Gas Safe registered. Nobody touches a gas appliance or flue at PrimeFix without the qualification to do it legally. Prime Fix Gas Safe Number: 983685 

We only quote once we know what's wrong

Diagnosis comes first, then a confirmed price before any work starts. No call-out fee.

Same-day fixes where it counts

No heat and no hot water get priority scheduling. Most breakdowns are seen and repaired the same day.

Talk to a Boiler Specialist Today

Every quote is confirmed in writing before any work starts. No call-out fee, no parking or ULEZ surcharges, no surprises on the invoice. All work is backed by an 18-month workmanship guarantee.

Boiler Services We Cover

From breakdowns to brand-new installations, here’s what our engineers handle most.

Boiler Faults & Diagnostics

Boiler Fault Diagnosis & Repairs

Ignition failure, pressure loss, fan and PCB faults, or an error code you don't recognise. Diagnosed properly before any parts are replaced.

New Boiler Installation

New Boiler Installations

Combi, system, or regular boilers supplied and fitted, sized correctly for your home, with warranty registration and building regs handled.

Heating & Gas - Annual Boiler Servicing

Boiler Upgrades & System Conversions

Back boiler removal, conversion to combi, and unvented cylinder installations for homes moving off older heating systems.

Heating & Gas - Landlord Gas Safety Certificates (CP12)

Landlord Gas Safety Certificates (CP12)

Annual gas safety checks and certification on rented-property boilers, completed to legal requirements.

Heating & Gas - No heat or hot water

Emergency No Heat, No Hot Water Callouts

Priority scheduling when the boiler's down and the house has gone cold, with same-day appointments where possible.

Heating & Gas - Boiler Breakdowns & Repairs

Annual Boiler Servicing

Manufacturer-compliant servicing to keep your warranty valid and catch small faults before they cause a breakdown.

We repair, service, and install all major boiler brands on the UK market

Transparent Pricing Across All Boiler Services

Every quote is confirmed in writing before work starts. No call-out fee. No hidden charges.

BOILER REPAIRS

Fixed Hourly Rate

Charged in 30-minute increments 1h after arrival. No call-out fee. From £99 +VAT for the first hour.

BOILER/COMBI BOILER SERVICE + GAS SAFETY CERTIFICATE

Fixed Rate

Fixed rate of £215. No callout fee, CP12 Certificate issued same-day

BOILER INSTALLATION

Contact for Quote

Priced individually based on your system and property. Fixed quote confirmed in writing before any work begins.

No hidden extras: no parking, fuel, ULEZ, or Congestion Charge surcharges. Materials at trade cost plus 30% markup, fully itemised on the invoice.
Account-client portfolios receive discounted rates from the published prices.

Meet the PrimeFix Engineers

Real engineers, real qualifications. The same trusted faces who’ll be at your door, not a subcontractor you’ve never met.

John M | 9+ Years experience

Gas Safe Registered | NVQ Level 3 Plumbing & Heating | ACS CCN1 & CENWAT Qualified | G3 Unvented Hot Water Certified

Arron H | 15+ years experience

Gas Safe Registered | NVQ Level 2 | Fully Qualified Plumber

Arber J | 25+ Years Experience

NVQ Level 2 & 3 | Fully Qualified Electrician | Inspection & Testing Qualified | PAT Testing Qualified

Chris V | 12+ Years Experience

NVQ Level 2 Drainage Construction CSCS Card OS19X CCTV Drainage Survey Qualified

Wherever you are, whatever your boiler needs, our standards remain the same

One trusted team serving London and the home counties. The same standards, wherever you’re based.

Book a Prime Fix Boiler Engineer

On call around the clock for leak detection, plumbing, heating, electrical, and drainage emergencies.

One number, every trade

On call around the clock for emergencies. For planned work and quotes, we typically respond within the hour during business hours.

24/7 Phone Line

0208 108 0400

Email Us

info@primefixgroup.uk

Hours

Monday to Friday 8am to 6pm | Emergency Line 24/7

Request a Callback

Leave your details and a PrimeFix engineer will be in touch within 60 minutes.

Boiler Service, Repair, and Installation FAQs

Common questions about boilers, answered plainly. If you don't see what you're looking for, call us on 02081080400 and we'll talk you through it.

How much does a new boiler installation cost?

Installation cost depends on the boiler type and any system changes needed, such as converting to a combi or upgrading pipework. We’ll assess what your property needs and give you a fixed installation price in writing before any work starts so there are no surprises.

A straightforward like-for-like swap is usually completed in a day. Conversions, such as moving from a back boiler or regular system to a combi, typically take one to two days depending on the pipework involved.

 

 

Yes. Our engineers work across all major UK boiler brands, whether it needs a repair, a service, or a full replacement, and we register the manufacturer warranty on new installations.

 

As a rough guide, boilers over 10 to 15 years old, needing frequent repairs, or costing more to fix than a fraction of a replacement are usually better replaced. Our engineers give a straight recommendation during diagnosis, not just a repair quote.

 

 

Yes, every engineer working on gas appliances or systems is Gas Safe registered.

 

Yes, CP12 gas safety checks and certification specifically for boilers in rented properties, completed to legal requirements and issued on the day.

 

 

A full check of the boiler’s components, flue, pressure, and combustion, carried out to manufacturer specification so your warranty stays valid.