How often should a gas furnace be serviced for optimal performance?

A gas furnace should be serviced at least once a year to ensure optimal performance. Annual servicing allows for a thorough inspection and cleaning of the system, which helps to maintain efficiency and safety. During a yearly service, a technician can check critical components, such as the heat exchanger, burners, and ignition system. They can also clean the furnace, replace air filters, and identify any potential issues before they escalate into more significant problems. This regular maintenance not only prolongs the life of the equipment but also enhances energy efficiency, ensuring that the furnace operates safely and effectively throughout the heating season.

Other intervals for service, such as every six months or once every two to five years, do not generally account for the frequent usage and potential wear and tear that occurs in a gas furnace, leading to suboptimal performance or safety hazards.