Ignite Success: Ace the 2026 MCC-NH Gas Fitters Exam!

In the context of gas fitting, appliances are not considered part of the fixed piping system. The fixed piping system refers to the permanent, installed piping that transports gas from the supply source to the appliances. This includes all the necessary components such as pipes, fittings, valves, and regulators that are stationary and integral to the facility's gas distribution network.

Appliances, on the other hand, are devices that utilize gas, such as furnaces, water heaters, and stoves. They are typically connected to the fixed piping system through flexible connectors or fittings, which allows for easier installation and maintenance. Because appliances can be removed or replaced without altering the fixed piping, they remain separate entities in the overall gas distribution setup.

Understanding this distinction is important, as it influences how installations comply with codes and safety regulations, and it clarifies maintenance responsibilities between fixed infrastructure and movable appliances.