Yes, if your annual service is due, arranging it before the main heating season is practical. It lets you test the system while there is still time to deal with worn parts, pressure problems, control issues or circulation faults before a cold spell.
Energy Saving Trust specifically recommends checking the boiler and thinking about an annual service before winter. That does not mean a service guarantees there will never be a breakdown, but it reduces the chance that obvious developing faults go unnoticed.
Before the appointment, note any unusual noises, pressure changes, slow heating or intermittent hot-water problems so the engineer has the full picture. Doherty's Glasgow boiler servicing page sits alongside its repair and replacement service, making it suitable whether the boiler simply needs routine maintenance or further investigation.
