What is a primary safety concern when working with gas appliances?

Gas leaks are a primary safety concern when working with gas appliances because they pose a significant risk of fire and explosion. Natural gas and propane are highly flammable, and even a small leak can lead to dangerous situations if ignited. It is crucial to ensure that all gas connections are secure and that appliances are regularly inspected for any signs of leaks. Additionally, working with gas appliances requires an understanding of the gas's properties, including its odor, which is often masked with sulfur to help detect leaks.

While overheating of equipment, improper labeling, and electrical hazards are also important safety considerations, they do not carry the same immediate and life-threatening risks associated with gas leaks. Gas leaks can lead to catastrophic outcomes if not addressed promptly, making them a top priority for gas fitters and technicians.