A regular boiler service gives an engineer the opportunity to inspect the appliance, complete the checks appropriate to it and identify signs of wear or developing faults. It can support safe, efficient operation and may be required by the manufacturer to maintain a warranty.
The servicing information previously published by Provida Services covered inspection, flue-gas analysis, relevant safety-device checks and maintenance such as cleaning the condensate trap or magnetic filter where the appliance and system require it. The exact work depends on the boiler, its condition and the service level agreed before the visit.
Please share the boiler make and model, its approximate age, any warning code or change in behaviour, and whether you need evidence of servicing or a particular manufacturer schedule to be followed.