Heating system maintenance involves several key tasks. This includes inspecting and replacing air filters to ensure proper airflow, checking and cleaning the burner assembly, inspecting the ignition system, lubricating moving parts, examining the thermostat settings, testing safety controls, and inspecting the flue and ventilation system. Additionally, a professional technician may conduct a combustion analysis to optimize fuel efficiency. Timely professional inspections, ideally performed annually, are essential for the longevity and reliable operation of heating systems.