What should a proper boiler service include?
A proper annual service includes: a flue gas analysis (combustion check with an instrument, not a glance), gas pressure and flow checks, inspection of the flue run and terminal, operation of all safety devices, checks on system pressure and the expansion vessel, controls operation, a visual inspection for corrosion and leaks — all recorded, with the record left with you. It takes 45 minutes to an hour. A five-minute look and a sticker is not a service, whatever the invoice says.
Why it matters beyond safety
Most manufacturer warranties are conditional on an annual service by a Gas Safe engineer, with records. Skip a year and a 10-year warranty can quietly become no warranty — the expensive way to save £90.
What we leave you with
A completed checklist — what was measured, what the readings were, anything flagged for attention and how urgent it honestly is. 'Watch this next year' and 'fix this now' are different things, and we say which.
The best time to book
Late summer or early autumn — before the heating season, when small problems are cheap and engineers aren't fire-fighting breakdowns. Landlords: pair it with the CP12 in one visit.