Boiler Repairs, Service & Installations
in Watford, WD17
Boiler breakdown, annual service, or a new install — our Gas Safe engineers are based in Borehamwood and reach Watford fast. No call-out fee, no hidden charges. Book your visit today.
Book A Gas Safe Boiler Engineer
- No Call-Out Fee
- All Brands and Models
- Fixed Price, No Surprises
- Scheduled or Emergency Work
Book a Gas Safe Boiler Engineer
- No Call-Out Fee
- All Brands and Models
- Fixed Price, No Surprises
- Installation, Service & Repairs
- Scheduled or Emergency Work
Gas Safe Boiler Repairs, Service and Installations in Watford
We’re based just outside Watford in Borehamwood, so getting an engineer to you doesn’t mean joining a queue behind jobs across town.
Nothing gets swapped until we know why. A boiler losing pressure, refusing to fire, or cutting out is almost always down to one of a few causes — fan failure, ignition problems, a faulty PCB. We identify which one it actually is first.
An honest call on repair versus replacement. We look at the boiler’s age, how often it’s needed fixing, and what another repair would cost. Where replacement’s the better move, you’ll walk away with a fixed installation quote on the day.
EXCELLENT
Based on 77 reviews
Posted on Google![]()
yusra ibrahimTrustindex verifies that the original source of the review is Google.
Great service! We had a leak in the middle of the night and called Primefix around midnight. The job was booked straight away, and the engineer arrived in less than an hour. Aurel inspected our bathroom, quickly found the source of the leak, and fixed it on the first visit. He saved us a lot of trouble and kept the damage to a minimum. Highly recommended! Primefix will definitely be my go to company from now on.Posted on Google![]()
Vinobha YoganathanTrustindex verifies that the original source of the review is Google.
Had a leak in our bathroom and PrimeFix Group sorted it out quickly. Professional, reliable and got the job done without any hassle. Highly recommend to anyone needing a trustworthy plumber
Owner's reply
Hi Vinobha, We want to thank you for the positive feedback and are delighted that our engineer found the leak in your bathroom. Much appreciated.Posted on Google![]()
Richard SirakovTrustindex verifies that the original source of the review is Google.
We had a leak in the kitchen ceiling ,Aurel came and resolve the issue within a day. Very professional team. Highly recommended.
Owner's reply
Hi Richard, We want to thank you for your support and positive feedback. We’ll make sure to pass on your kind words to the engineer.Posted on Google![]()
Yoanna KushevaTrustindex verifies that the original source of the review is Google.
We had No hot water on Sunday evening . Matt From PrimeFix came for rescue and fix our boiler with No time. I would recommend Prime Fix to our friends and family. Thank You
Owner's reply
Hi Yoanna, We’re delighted that Mat managed to bring the hot water back and we appreciate your positive feedback.Posted on Google![]()
Thinesh KTrustindex verifies that the original source of the review is Google.
Great service and will highly recommend
Owner's reply
Hi there Thinesh, We’re glad you had a great service and thank you for the recommendation.Posted on Google![]()
Gnana KandaTrustindex verifies that the original source of the review is Google.
Losing over 40 litres of water a day. Previous firm sent two Engineers daily, cost thousands, never found the leak. PrimeFix sent one engineer the same day I booked. James was brilliant, found it in a couple of hours and left a detailed written report with photos for insurance. That is the difference between a bill and a result
Owner's reply
Thanks so much for your kind review really glad James got to the bottom of the leak quickly and left you a proper report , we will pass this to James Thanks for choosing PrimeFixPosted on Google![]()
ipek yusufTrustindex verifies that the original source of the review is Google.
Absolutely fantastic work. Quote was given promptly and honestly, the level of dedication to the job is unmatched. 100% would recommend.
Owner's reply
Thanks so much , Ipek! Really glad the quote was straightforward and the dedication to the job showed through.Thanks so much for the recommendation.Posted on Google![]()
Chimen HusseinTrustindex verifies that the original source of the review is Google.
In all honesty I am really chuffed :-) I have never in all of my 58 years seen such a hard working young man to the tea👌he knows exactly what he is doing, and is very professional and respectful. I would 101 % recommend. The work that he has carried out in one day is remarkable. My bath was on the verge of collapsing due to an unseen leak. My bathroom is comming back to life! Thank you G and D :-) forever greatfull.
Owner's reply
Thank you so much for this lovely review! Really glad the leak was caught in time and your bathroom’s back on track . We’ll pass this on to the engineers. Thanks for trusting us.Posted on Google![]()
Xavier B. MayerTrustindex verifies that the original source of the review is Google.
Excellent experience : — highly competent — pro-active and reactive — always available — prompt and responsive — solution finder and reliable team My leak was very tricky to uncover. They went methodically, and found the answer. Well done team ! 👏🏻👏🏻👏🏻👏🏻
Owner's reply
Hi Xavier, Thank you so much for your kind words and for taking the time to leave us such a great review.We really appreciate itPosted on Google![]()
erinaTrustindex verifies that the original source of the review is Google.
Great work! Highly recommend, Fast service and charges reasonable amount. Excellent and came with promised support for future wise.
Owner's reply
Hi Erina, We’re delighted to hear that you were left satisfied and we want to thank you for your positive feedback
Gas Safe on every visit
No surprises on price
Priority response for no heat
Speak to a Local Boiler Engineer 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.
Our most common Watford boiler jobs
From breakdown call-outs to complete new installs, here’s what our engineers handle most across Watford.

Fault Finding & Repairs
A boiler that won't fire, drops pressure, or won't hold heat usually comes down to a worn fan, faulty PCB, or ignition issue. We pin down which before touching any parts.

New Boiler Installations
Whatever suits your property best — combi, system, or regular — we fit it properly, then handle the warranty registration and building regs sign-off so you don't have to chase it.

Boiler Upgrades & Conversions
Moving on from an old back boiler, converting to combi, adding an unvented cylinder, or modernising a dated heating setup — all treated as upgrade work.

Landlord Gas Safety Certificates (CP12)
CP12 gas safety checks for Watford landlords, carried out to full legal standard, with the certificate issued straight after the inspection.

No Heat, No Hot Water — Priority Callouts
A cold house moves to the top of our schedule, with same-day visits arranged whenever it's possible.

Annual Boiler Servicing
We inspect flue, pressure, and combustion against manufacturer spec, so your warranty stays intact and any early faults get picked up before they become breakdowns.
We repair, service, and install all major boiler brands on the UK market
- Worcester Bosch
- Vaillant
- Baxi
- Ideal
- Viessmann
- Vokèra
- Alpha
- Potterton
- Main
- Glow-Worm
- Ferroli
- Ariston
- Intergas
- Grant














Transparent Pricing Across All Watford 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.
Our Boiler Engineers Serving Watford
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
Arron H | 15+ years experience
Arber J | 25+ Years Experience
Chris V | 12+ Years Experience
Serving Watford with Pride
Borehamwood is right next door, so Watford sits well within our quickest response times rather than being a job we’re stretching to reach.
We cover the full scope of boiler work across Watford and the WD postcodes: breakdowns, fault diagnosis, annual servicing, CP12 landlord certificates, cold radiators, powerflushing, and gas safety checks. Where a job goes beyond the boiler, our engineers also take care of plumbing, drainage, and leak detection, so there’s no need to bring in someone else for a related issue.
- Annual boiler servicing
- Gas appliance safety checks
- Landlord gas safety certificates
- Central heating faults and cold radiators
- Powerflushing for sludge and cold spots
- Boiler breakdowns and no heat or hot water
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
24/7 WhatsApp Line
0757 700 2864
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.
Watford Boiler FAQs
Quick answers to the boiler questions we're asked most often. Anything you're still unsure about? Call 02081080400 and we'll talk it through.
How quickly can you get an engineer to Watford?
Borehamwood is a short hop from Watford, so it sits comfortably inside our fastest response window. No heat or no hot water always jumps the queue.
Repair or replace — how do you decide?
It largely comes down to the boiler’s age and how often it’s been breaking down. We won’t make that call over the phone — we’ll have a look in person first and tell you straight what makes sense.
If I get a new boiler, is the warranty sorted for me?
Yes — we register the manufacturer warranty and handle the building regs paperwork ourselves, as a standard part of the install rather than an add-on cost.
Same-day CP12 certificate — is that possible?
Usually, yes. Provided the visit goes ahead as booked and nothing holds up the check, you’ll leave with the certificate on the day.
Can't get parts for an older boiler — then what?
If that turns out to be the case, we’ll tell you at diagnosis stage and go through whether repair still makes sense before anything’s agreed. We won’t proceed without talking it through with you first.
Is £99 the full price, or does it go up?
£99 covers the first hour, with an additional half-hour rate if the job runs longer. Most repairs are done within an hour or two, and you’ll have a fixed price agreed before any work starts, not revised afterwards.







