How often to service your boiler
The recommendation, including the manufacturers', is a service once a year, ideally in the fall. It's not just a formality: a clean boiler uses less gas, breaks down less often and protects you from risks, especially with the flue gases.
Beyond safety, the service keeps your manufacturer's warranty valid, which often requires it. That way you learn in time what needs replacing, not in the dead of winter. See what the service includes.