Boiler Repair South London
Gas Safe registered · £85 diagnostic in-hours · £170/hr out-of-hours · Written estimate before any work starts
One fee covers attendance and diagnosis
That first hour covers attendance and fault-finding, charged by the hour with no separate call-out on top.
During Standard Hours
Weekdays, 8am–6pm
£85/hr
1-hour minimum
- Same-day or next-day attendance
- 30-minute call ahead
- Fault diagnosed and clearly explained
- Written estimate before any work starts
- Parts sourced, supplied, and fitted ASAP
- Full system test before leaving
Outside Standard Hours
Evenings, Weekends and Bank Holidays
£170/hr
1-hour minimum
- 30-minute call ahead
- Same diagnostic process — no shortcuts
- Written estimate before any work starts
- Parts sourced, supplied, and fitted ASAP
- Full system test before leaving
- Emergency gas smell: call 0800 111 999 first
By the hour
Work is charged by the hour, one-hour minimum — you pay for time on the job, not for turning up. Costs agreed before anything proceeds.
No separate diagnostic
Finding the fault is part of that first hour, not an extra line — no diagnostic fee, no call-out charge on top.
Parts estimated before ordering
Common parts like pumps, diverter valves, and pressure relief valves typically take 2–3 hours' labour to fit. Heat exchangers and PCBs may take longer.
Boiler faults we diagnose and repair
No heating or hot water
Diverter valve, pump failure, or PCB fault
Boiler losing pressure
Expansion vessel, pressure relief valve, or system leak
Fault code showing
Manufacturer-specific diagnostics across all major brands
Boiler making noise
Kettling, banging, or whistling — heat exchanger or pump
Pilot light keeps going out
Thermocouple, gas valve, or draught issue
Boiler leaking water
Pump seal, pressure relief valve, or pipe joint
Radiators not heating fully
System balance, pump, or zone valve issue
Carbon monoxide alarm
Emergency same-day response — do not ignore
If you can smell gas: get fresh air in, get everyone out, and ring the National Gas Emergency Service — 0800 111 999, staffed 24/7 — before you ring us.
What customers say about our boiler repairs
"Boiler kept losing pressure so I gave up and called them. Leaking valve apparently. He didn't have the part on the van but nipped out, got it, and was back to finish the same afternoon. Price was the price, no surprises on the invoice which makes a change."
"Brilliant from start to finish. The engineer (Marek I think) was so polite and explained everything as he went. 👏"
"Boiler had been banging away for weeks then died completely. Someone out the next day, turned out to be the pump. He didn't have one with him but ordered it and was back the following morning to fit it. Heating's been spot on since. Can't fault them."
What happens when you call
Call or WhatsApp
Call 020 8243 4829 or message us on WhatsApp — breakdowns are time-sensitive, so send a photo of the boiler, fault code or leak and we know what we're dealing with before we arrive. We confirm a same-day or next-day window.
Arrival
Engineer arrives in the agreed window. We call 30 minutes ahead.
Fault-finding
We investigate to find the root cause, not just the symptom. This covers the diagnostic fee.
Estimate
A written estimate for time and parts before any work starts. No surprises.
Repair
On the day where we can. If a part needs ordering, we get it as soon as possible and confirm the return date.
Test
Once the repair is complete, we run a full system test before leaving — heating and hot water running correctly, pressure checked, no error codes. If we're waiting on a part, the test happens on the return visit, after the repair.
All major domestic boiler makes
All gas work in the UK must be carried out by a Gas Safe registered engineer — it is a legal requirement, not a quality badge. Our registration is verifiable at gassaferegister.co.uk.
Gas Safe Registered
No. 567663
A repaired boiler still needs its annual service
Most breakdowns we attend trace back to a missed service — sludge, scale and worn seals build up quietly until something gives. Booking the annual service after a repair resets the clock and keeps the manufacturer warranty intact.
- Annual boiler service: £85 fixed
- Landlord? CP12 + service combined: £150 — saves £20
- Single visit at a time that suits
Boiler repair across South London
We cover eleven South London boroughs from our base in Central Croydon. Select your area for local detail, postcodes, and booking.
Bexley
DA1, DA5, DA6, DA7 +5 more
Typically 40–55 min from base
Bromley
BR1, BR2, BR3, BR4 +4 more
Typically 20–30 min from base
Croydon
CR0, CR2, CR3, CR4 +5 more
Typically 5–15 min from base
Greenwich
SE3, SE7, SE9, SE10 +4 more
Typically 30–40 min from base
Kingston
KT1, KT2, KT3, KT4 +2 more
Typically 35–45 min from base
Lambeth
SE1, SE5, SE11, SE24 +6 more
Typically 15–25 min from base
Lewisham
SE4, SE6, SE8, SE9 +5 more
Typically 20–30 min from base
Merton
SW19, SW20, SM4, CR4
Typically 20–30 min from base
Southwark
SE1, SE5, SE15, SE16 +3 more
Typically 20–30 min from base
Sutton
SM1, SM2, SM3, SM5 +2 more
Typically 20–25 min from base
Wandsworth
SW8, SW11, SW12, SW15 +2 more
Typically 25–35 min from base
Common questions about boiler repair
How quickly can you get to me?
Same-day in most cases. We cover South London from Central Croydon — most of the area is within 30–45 minutes. Call first thing for the best chance of a same-day slot.
Do you charge a call-out fee on top of the repair?
No. During standard hours (weekdays 8am–6pm) the £85 diagnostic covers attendance and fault identification. Outside those hours — evenings, weekends and bank holidays — work is charged at £170 per hour with a one-hour minimum. If you proceed with the repair, the first hour is included in the total — there is no separate call-out charge on top.
My boiler keeps cutting out and resetting — is that worth repairing or should I replace it?
Intermittent cut-out is usually a specific fault (low pressure, failed sensor, blockage) that is economical to repair. We'll diagnose honestly — if the boiler is at end of life we'll tell you, not carry out a repair that won't hold.
Do you carry parts on the van?
Yes. Common parts for Worcester Bosch, Vaillant, Ideal and Baxi are stocked. More unusual parts are ordered same-day where suppliers allow, typically arriving next working day.
Can you repair a boiler that's under warranty?
If the boiler is within the manufacturer's warranty period, contact the manufacturer first — warranty repairs must typically be carried out by their approved engineer network or the warranty is voided. If the warranty has lapsed, we can carry out the repair.
I can smell gas near my boiler. What do I do?
Do not use any electrical switches. Open windows. Leave the property. Call the National Gas Emergency Service on 0800 111 999 immediately — they are available 24/7 and this is their job. Only call us once the emergency service has attended and the property is declared safe.
Boiler broken down?
Call for same-day attendance across South London. Written estimate before any work starts.