What basic maintenance can homeowners perform on their gas furnace?

Homeowners can effectively check and replace the air filter on their gas furnace as a simple maintenance task. Regularly changing the air filter is crucial, as it ensures that the furnace operates efficiently by promoting proper airflow. A clean filter helps prevent dust and debris from accumulating within the furnace and the ductwork, which can lead to decreased performance, overheating, or even system failures over time.

In contrast, tasks such as installing a new gas line or bleeding gas lines require specialized skills and should be left to licensed professionals due to the safety hazards involved. Additionally, recalibrating the thermostat settings may not be something all homeowners are equipped to do without guidance, as it often requires a deeper understanding of the system’s mechanisms. Therefore, checking and replacing the air filter stands out as a practical and important task that homeowners can comfortably handle to maintain their gas furnace.