Most Homeowners Skip It. That's a Mistake.
Annual boiler servicing is consistently the most deferred maintenance task in UK homes. People assume that if the boiler is working, it doesn't need attention. But by the time a boiler shows signs of trouble, the problem has often been developing for months — and the repair bill is significantly higher than a service would have been.
Our engineers carry out boiler services across Battersea, Clapham, Chelsea and SW London year-round, and we see the consequences of missed servicing regularly.
What Happens During a Boiler Service?
A proper boiler service involves a systematic inspection of the boiler, its controls, the flue and the gas supply. Here's what our engineers check:
- Gas pressure and flow rate — ensuring the boiler is receiving the correct gas supply
- Burner condition — inspecting and cleaning the burner assembly
- Heat exchanger — checking for corrosion, cracks or fouling
- Flue and combustion — flue gas analysis confirms the boiler is burning cleanly and safely
- Seals and gaskets — replacing any that show signs of deterioration
- Controls and safety devices — testing the thermostat, programmer, pressure relief valve and all safety cut-outs
- Carbon monoxide check — using a CO analyser to confirm safe combustion
At the end of the service we issue a service record confirming the work done and the boiler's condition.
Three Reasons Not to Skip It
1. Safety. Carbon monoxide is colourless and odourless. A poorly maintained boiler can produce elevated CO levels without any visible signs. An annual service includes combustion analysis that catches this before it becomes dangerous.
2. Warranty. Most boiler manufacturers — including Worcester Bosch and Vaillant — require annual servicing by a Gas Safe registered engineer as a condition of the manufacturer warranty. A missed service can void your cover entirely, leaving you liable for the full cost of any repairs.
3. Efficiency and longevity. A serviced boiler runs more cleanly, uses less gas and is less likely to develop faults. Most boiler breakdowns we attend could have been prevented by regular maintenance.
Gas Safety Certificates for Landlords
If you're a landlord in London, the Gas Safety (Installation and Use) Regulations 1998 require you to have all gas appliances inspected annually by a Gas Safe registered engineer and to provide tenants with a Gas Safety Record (CP12). We combine the boiler service and CP12 certificate into a single visit, available from £70 for the certificate and from £80 for the service — or ask about our combined rate. See our landlord services page.
Book a Boiler Service in SW London
We service boilers across Battersea, Clapham, Chelsea, Wandsworth, Fulham, Balham, Tooting and all of SW London. Same-day availability in most cases. Book online or call 07773 991199.