Red Seal Appliance Service Technician Practice Exam

What essential maintenance task should be performed on a gas appliance yearly?

1. Replace gas lines

2. Check and clean burners

3. Inspect the external casing

4. Calibrate the control knobs

The correct answer is: Check and clean burners

The essential maintenance task that should be performed on a gas appliance yearly is to check and clean the burners. This is crucial because burners are responsible for mixing gas with air to produce a safe and efficient flame. Over time, burners can become clogged with dirt, grease, or other debris, which can lead to incomplete combustion. This may cause poor performance, increased emissions, and even potential safety hazards such as gas leaks or fires. Regular checking and cleaning help ensure that the burners function properly, maintaining the efficiency of the appliance and reducing the risk of hazardous situations. While tasks like inspecting gas lines, examining the external casing, and calibrating control knobs are certainly important for overall appliance safety and performance, they are not as critical to the regular operational efficiency of the appliance as maintaining the burners. Ensuring that the burners are clean and functioning correctly is a fundamental part of annual maintenance for gas appliances, thereby supporting both safety and energy efficiency.