Boiler Service
Hertfordshire & London
Annual boiler service £120 + VAT — Gas Safe registered engineers (No. 936121). Combi, system and regular boilers. Full 9-point inspection, combustion analysis, written Gas Safe report. Landlord CP12 certificates issued same day. Same-week appointments across Hertfordshire and North London.
Every Visit
What's Included in Every Boiler Service
A thorough service — not a box-ticking exercise. Every check below is carried out on every visit by our Gas Safe registered engineers.
Burner Inspection & Clean
Burner assembly inspected and cleaned. Carbon deposits cleared, igniter and flame sensor checked.
Heat Exchanger Check
Primary heat exchanger inspected for limescale (critical in Hertfordshire's hard water area) and flow restriction.
Flue & Combustion Analysis
Flue integrity tested. CO and CO₂ levels measured — the most critical safety check in any boiler service.
Gas Pressure & Flow Rate
Inlet and working pressure measured against manufacturer specification. Recorded in the written service report.
Safety Devices Test
Pressure relief valve, overheat thermostat, temperature/pressure sensor and condensate trap all tested.
Seals & Gaskets
All accessible seals inspected for deterioration. Degraded seals can allow combustion gases to leak — flagged immediately.
Controls & Programmer
Thermostat, programmer, zone valves tested for correct function. Fault codes read from boiler memory.
Expansion Vessel Pressure
Expansion vessel charge pressure checked and re-pressurised if necessary. System pressure topped up.
Written Gas Safe Report
Written service record issued on the day. All checks, results and any faults or advisories documented in writing.
Related Services
Alongside boiler servicing we offer boiler repair, new boiler installation, gas safety certificates and full central heating across Hertfordshire and North London.
Boiler Repair
Gas Safe fault diagnosis and repair. £75 + VAT investigation fee, written quotation before any work.
Boiler Installation
New A-rated combi or system boiler from £2,150. Vaillant Advance Installer — up to 10-year warranty.
Gas Safety Certificates
Landlord CP12 Gas Safety Record. £85 + VAT. All gas appliances inspected. Same-day certificate.
Landlord Gas Safety
CP12 certificates for landlords and letting agents. Multi-property discounts. Reminder service available.
Pricing
Boiler Service Prices
Fixed prices confirmed before your appointment. No call-out charges within our standard coverage area. All prices include a written Gas Safe service record.
| Service | Price |
|---|---|
| Annual boiler service — combi boiler | £120 + VAT |
| Annual boiler service — system boiler | £120 + VAT |
| Annual boiler service — regular boiler | £120 + VAT |
| Boiler service + Landlord CP12 | £170 + VAT |
| Landlord CP12 only | £85 + VAT |
| Boiler fault diagnosis | £75 + VAT |
All prices exclude VAT. Fixed price confirmed before booking.
Coverage
Boiler Service Locations
Gas Safe registered boiler service across 20 locations in Hertfordshire and North London. Click your location for a dedicated page with local pricing, coverage and appointment details.
West Hertfordshire
Boiler Service Watford
WD17, WD18, WD19, WD24, WD25
Boiler Service Bushey
WD23
Boiler Service Abbots Langley
WD5
Boiler Service Croxley Green
WD3
Boiler Service Kings Langley
WD4
Boiler Service Chorleywood
WD3
Boiler Service Rickmansworth
WD3
Boiler Service Northwood
HA6
Boiler Service Oxhey
WD19
Boiler Service South Oxhey
WD19
Boiler Service Garston
WD25
Book Your Boiler Service Today
Same-week appointments across Hertfordshire and North London. Fixed price confirmed before booking. Written Gas Safe report on the day. Landlord CP12 certificates available.