Annual Boiler Servicing South London
Gas Safe registered · From £85 · We advise on arrival, you decide
Two levels of service. We advise the right one on arrival
Both cover the Gas Safe essentials. The difference is depth.
Annual Service
Suitable for most boilers serviced within the last 12 months
£85
- Visual inspection of boiler and components
- Flue flow and integrity test
- Combustion analysis
- Heat exchanger inspection
- Burner inspection and clean
- Gas pressure and flow rate check
- Safety controls and thermostat test
- Expansion vessel and pressure relief valve check
- Pump and motorised valve test
- Magnetic filter inspection
- Service report issued on the day
Full Strip-Down
Recommended where a service has been missed, or combustion readings suggest build-up
£170
vs £85 Annual
- Everything in the annual service, plus:
- Full internal disassembly
- Heat exchanger removed, inspected, and deep-cleaned
- Burner and injectors individually cleaned
- Sump and condensate trap cleared
- Seals and gaskets inspected for early wear
- Full reassembly and re-commissioning
Price is fixed
No extras for standard service work.
Faults estimated first
If during the service we identify a fault or worn part that needs attention, we give you a written estimate before carrying out any additional work.
Combined CP12 + service · £150
Gas Safety Certificate (CP12) and boiler service in one visit — the most cost-effective option if you need both.
What's included in every boiler service
Every service — annual or full strip-down — covers the complete checklist below. Nothing skipped to save time.
Visual inspection
Boiler body, casing and flue
Combustion analysis
Flue gas measurement
Heat exchanger
Inspected and cleaned
Burner
Inspected and cleaned
Gas valve
Inspected and tested
Ignition system
Spark and detection tested
Seals & gaskets
Wear and integrity check
Safety devices
Thermostats, limits, overheat
Pressure & flow
System pressure and flow rate
Full system test
Complete functional run
Service record issued before we leave
·Documents all findings and confirms appliance status
What customers say
"Annual service on a boiler I'd written off in my head. They didn't write it off. Serviced it, said honestly it had a few good years left, saved me a small fortune. Will absolutely use again."
"Brilliant from start to finish. The engineer (Marek I think) was so polite and explained everything as he went. 👏"
"Annual boiler service this morning. Thorough, talked me through the pressure readings, no upselling whatsoever. Turned up bang in the window they gave me."
What to expect
Book
Book online or call — we schedule at a time that suits you or your tenant.
Arrival
Engineer arrives in the agreed window. The service typically takes 45–60 minutes.
Service
Combustion analysis, clean, inspect, test all safety devices and controls.
Report
We note any advisories — worn parts, marginal readings — with no pressure to act immediately.
Documentation
Service record issued on completion, same day.
All major domestic boiler makes
Gas Safe Registered
No. 567663
Combine with a Gas Safety Certificate (CP12) and save
Annual boiler service and Gas Safety Certificate (CP12) completed in a single visit. Combined price £150 — compared to £85 + £85 booked separately, saving £20. Certificate issued same day, report alongside it.
- Combined CP12 + annual service: £150
- We coordinate directly with your tenant for access
- Certificate issued before we leave
Boiler servicing across South London
We cover eleven South London boroughs from our base in Central Croydon. Select your area for postcodes, local detail, 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 servicing
Is an annual boiler service really necessary?
Yes — most manufacturers require an annual service to keep the warranty valid. Beyond warranty, a service catches deteriorating components before they cause a breakdown, maintains combustion efficiency, and ensures the flue and heat exchanger are safe. Skipping a service rarely saves money in the long run.
What is the difference between an annual service and a full strip-down?
An annual service covers all standard checks, combustion analysis, flue test, and clean without full disassembly. A full strip-down goes further: every internal component is removed, inspected individually, and cleaned — including the heat exchanger, burner, and injectors. We recommend it for boilers that have been missed for more than a year, or where combustion readings suggest build-up.
Will the engineer recommend a strip-down or just the annual service?
We assess the boiler on arrival and give you an honest recommendation. If the annual service is sufficient, that is what we say. If combustion readings or visual inspection suggest a strip-down would make a meaningful difference, we explain why. You decide — there is no pressure either way.
How long does a boiler service take?
An annual service typically takes 45–60 minutes. A full strip-down takes 90–120 minutes depending on the boiler model and condition.
Do I need to be home during the service?
An adult needs to be present to grant access. We confirm a time slot before the visit — if the day changes, we call ahead.
When is the best time to book a boiler service?
Late summer to early autumn — before the heating season. Demand is lower, which means faster availability. Booking in October or November when the boiler is already struggling is possible but harder to schedule quickly.
Book your annual boiler service
We assess on arrival and advise honestly. You decide on the level.