24/7 DISPATCH · GAS SAFE REGISTERED
Boiler fault? Diagnosed first, fixed same visit.
Fault-code diagnostics on every van and a time-banded price agreed before we dispatch, across all 33 London boroughs.
Request a Diagnosis
Tell us about the problem, free, no-obligation quote. No spam, no mailing lists.
24/7
Dispatch
We answer and act, day or night
33
Boroughs
Full Greater London coverage
1
Visit
Most faults confirmed fixed first time
15
Min quote
Fast free no-obligation reply
WHAT HAPPENS WHEN YOU CALL
From the first ring to a confirmed-fixed boiler
No black box between “we called” and “it's fixed”, here's the actual sequence on a typical emergency visit.
Dispatch confirms your time band
Your postcode and symptoms go straight to the nearest available engineer, with an honest arrival window agreed before anyone leaves.
Fault-code and pressure kit already on board
Every van carries both, so no second visit gets booked in just to bring the right kit.
Diagnosed, then confirmed
The fault gets read from the boiler and checked against the system — not guessed from the symptom alone.
Confirmed, priced, closed
The time-banded price agreed at the start is what's on the invoice, with the fault explained in plain terms.
How we work it out
The same logic our engineers use on every call-out, before a single part gets quoted.
No heat or hot water
LIKELY CAUSE
Often an airlock, a failed pump, or a PCB fault, rarely the boiler itself
WHAT WE DO
Fault code read and the system checked before anything is quoted
Pressure gauge keeps dropping
LIKELY CAUSE
A slow leak, a faulty pressure relief valve, or a failing expansion vessel
WHAT WE DO
Pressure test isolates the cause, then we repressurise and confirm it holds
Boiler locked out, showing a code
LIKELY CAUSE
Ignition failure, a blocked condensate pipe, or a sensor fault, depending on the code
WHAT WE DO
Code matched to the manufacturer database, confirmed on-site before repair
ON EVERY VAN
Diagnose it right. Confirm the fix.
Fault-code diagnostics
We read the boiler's error code first, matching it against the manufacturer's database before quoting any repair.
Learn more
Pressure & leak check
A pressure test confirms whether a slow leak, a faulty valve or trapped air is behind the drop.
Learn more
Radiator balancing & bleed
Cold spots get bled, balanced or power-flushed depending on whether it's air or sludge causing them.
Learn more
Pump & circulation check
When heat isn't reaching the system, we check the circulation pump before assuming the boiler itself is at fault.
Learn more
ON THE ROAD, 24/7
WHY CHOOSE US
Built for the boiler that can't wait
Clear time-banded pricing before we dispatch, fault-code diagnostics on every van, and a straight answer if a job needs more than a repair.
A time band before you commit
We state an honest arrival window when you call — a real band based on where the nearest engineer is, not a marketing promise.
Diagnosed before it's repaired
Every engineer reads the fault code and checks the system before quoting, so the fix matches the actual cause.
Transparent time-band pricing
Out-of-hours and weekend rates are stated as an exact time-banded figure before dispatch.
Gas Safe registered engineers
Every engineer on the van is fully Gas Safe registered, working on gas boilers and central heating systems day or night.
CONFIRMED FIXED
A fault-code check that backs up every call-out
We don't call a job done because the radiators are warm for now. A fault-code and pressure check confirms the repair actually held, and flags anything that needs a part ordering.
Book emergency dispatchBEFORE WE ARRIVE
While you wait for us
Four things worth doing in the minutes after the heating fails, none of them require an engineer.
Turn off the boiler
If you smell gas or hear a banging noise, switch off the boiler and isolate the gas supply until we arrive.
Photograph the display
A photo of any error code or the pressure gauge reading helps the engineer prepare before they even arrive.
Clear access to the boiler
Move anything blocking the airing cupboard or boiler housing so the engineer can get straight to work.
Call, don't wait it out
A fault that looks minor now can leave you without heat overnight. Our dispatch line runs around the clock.
HOW IT WORKS
Our emergency response process
Your Urgent Call
Contact us anytime — our dispatch team immediately mobilises the nearest available engineer with fault-diagnostic kit.
Rapid On-Site Arrival
Our engineer arrives and reads the fault code or runs a pressure check before quoting anything.
Diagnosed and Fixed
We explain the cause in plain terms, agree the fix, then repair it — not just reset the boiler and hope.
Start with the fault, not the guess
Every job on this list starts the same way: the fault gets identified before a price gets fixed.
START HERE
Fault Code Diagnosis
The boiler's error code gets matched against the manufacturer's database and confirmed on-site before anything's quoted.
Look up your codeNo Heating / No Hot Water
Whole-system fault diagnosis when the boiler's dead or the taps have gone cold, with a time-banded price agreed first.
Boiler Losing Pressure
We find the leak or faulty valve behind a dropping gauge, then repressurise and confirm it holds.
Radiator Not Heating
Cold spots get bled, balanced or power-flushed on the same visit, whether it's trapped air or sludge.
Boiler Repair
Standard boiler faults repaired with the same diagnostic-first approach, day or night.
Central Heating Pump Repair
24/7 dispatch with a time-banded rate stated before we travel — no surprise multiplier on arrival.
How we diagnose your boiler under pressure
M1
Fault-code diagnostics
The boiler's error code is read and matched against the manufacturer's database before any repair is quoted.
M2
Pressure & leak check
A pressure test confirms whether it's a slow leak, a faulty valve or trapped air behind the drop.
M3
Radiator bleed & balance
Cold spots get bled or balanced on the same visit when air or an unbalanced system is the cause.
M4
Escalation, honestly
If the fault points to a part that needs ordering, we explain it and quote the fix separately.
Urgent Boiler & Heating Services
D1 · CORE SERVICES
Emergency Repair
D3 · FIX ON THE DAY
Troubleshooting Guides
Our London-wide emergency network
Multiple on-call teams positioned across the city for a fast response, wherever your boiler is.
Coverage across all 33 Greater London boroughs. Map data © Google.
COVERAGE INDEX
24/7 coverage across London
Our network of Gas Safe registered engineers covers every borough, so help is never far from a broken-down boiler.
- Barking and Dagenham
- Barnet
- Bexley
- Brent
- Bromley
- Camden
- City of London
- Croydon
- Ealing
- Enfield
- Greenwich
- Hackney
- Hammersmith and Fulham
- Haringey
- Harrow
- Havering
- Hillingdon
- Hounslow
- Islington
- Kensington and Chelsea
- Kingston upon Thames
- Lambeth
- Lewisham
- Merton
- Newham
- Redbridge
- Richmond upon Thames
- Southwark
- Sutton
- Tower Hamlets
- Waltham Forest
- Wandsworth
- Westminster
RESPONSE TIME · UNDER 15 MIN
Boiler playing up? Get a time-banded price in minutes.
Tell us the postcode and symptoms, we reply with the fee and the earliest arrival window.
WHY LONDONERS CALL US
London Heating Engineers: what you can expect
01
No fix, no charge
If we attend a confirmed fault and can't fix it with the parts on the van, you don't pay for that visit.
02
Fixed first time, mostly
Fault-code diagnostics on every van mean most boiler faults are fixed and confirmed in a single call-out.
03
Time-banded pricing, stated upfront
The fee for your time slot is confirmed on the phone before we dispatch, not announced on arrival.
GUIDES
Urgent advice: acting fast on boiler faults
BOILER REPAIR
How to Choose a Boiler Repair Engineer in London
FAULT DIAGNOSIS
Boiler Losing Pressure: What It Means and What to Do
FAULT DIAGNOSIS
No Heating or Hot Water: A Diagnostic Checklist Before You Call
FAULT DIAGNOSIS
Why Is My Boiler Making a Banging Noise?
URGENT QUESTIONS
Emergency boiler repair, answered
How fast can you get to my broken-down boiler?
Dispatch runs 24/7. Arrival depends on traffic, time of day and where the nearest engineer is, but we give an honest window on the phone — not a blanket promise of the same number everywhere in London.
Do you diagnose the fault before quoting a fix?
Yes. Our engineers read the boiler's fault code and check the system on arrival, so the price you're given matches the actual cause, not a guess from the symptom alone.
Can you start repairs immediately after diagnosing the fault?
If the part needed is a common one, our engineer often carries it and can complete the repair the same visit. If it needs ordering, we explain that and quote the follow-up work separately.
Is your emergency service covered by insurance?
Some buildings and home-emergency policies cover boiler and heating call-outs. Check your policy wording — we can provide an invoice and a note of the diagnosed fault to support a claim.
What areas of London do you cover for emergencies?
We provide dispatch coverage across all London boroughs. Our network of engineers is positioned to reach any postcode in Greater London with a fast response.
What happens if my boiler fails in the middle of the night?
Our service runs the same way around the clock. Call our line — the same dispatch team answers, mobilises an engineer, and gives the same response, whether it's 3pm or 3am.
What kind of boiler faults need this urgent response?
No heating or no hot water, a boiler that's locked out and won't reset, or a rapidly dropping pressure gauge all need an urgent response. A single lukewarm radiator can usually wait for a standard booking.
How do you prioritise emergency calls?
All calls to our emergency line are treated as urgent. Dispatch prioritises based on severity and how close our engineers are, so help reaches the most urgent cases fastest.