The answer to 'when to service boiler' is that boilers should be serviced annually to ensure they are running efficiently and safely. Regular maintenance can help extend the lifespan of your boiler, prevent costly breakdowns, and ensure your home stays warm and comfortable all winter long.
During a boiler service, a professional HVAC technician will inspect the unit, clean any components, check for proper operation, and make any necessary adjustments or repairs. They will also test for proper combustion, check for gas or water leaks, and ensure all safety controls are functioning correctly.