It's recommended to service your HVAC system at least once a year, ideally before the start of each heating or cooling season. Spring is optimal for AC service, while fall is suitable for heating systems. Regular maintenance ensures efficient operation, prevents breakdowns, and extends system lifespan. Additionally, prompt attention to minor issues during routine service helps avoid costly repairs. Consult HVAC professionals to schedule timely maintenance and address any concerns to keep your system running smoothly year-round.