Gas fireplaces should undergo annual maintenance by a qualified technician to ensure safe and efficient operation. This maintenance includes cleaning the burners and logs, inspecting the ignition system, checking for gas leaks, and testing the venting system for proper airflow. Additionally, the technician will inspect the pilot light and thermocouple for proper functioning. Regular maintenance helps prevent potential safety hazards, ensures optimal performance, and prolongs the lifespan of the gas fireplace.