Class code 5183-2 — Gas Fitting

This classification covers gas fitting contractors who install and repair gas piping and connect gas-fired appliances such as furnaces, water heaters, and ranges. Work includes running gas lines through walls and crawlspaces, connecting appliances, pressure testing lines for leaks, and making repairs to existing gas systems in homes and commercial buildings. This work is closely related to plumbing but is billed separately once it becomes a meaningful share of a contractor's business.

Payroll includes gas fitters and helpers who run pipe and test connections, often the same individuals who also perform general plumbing work for a combined plumbing-and-gas contractor. Where gas fitting is a small, incidental part of a plumber's overall work, it's typically absorbed into the general plumbing classification instead of being split out separately.

Leak risk is the defining hazard of this trade, since an undetected gas leak can lead to fire or explosion long after the work is finished, making pressure testing and connection quality critical. Physical hazards mirror general plumbing work — kneeling and reaching in tight spaces, cuts from pipe-cutting tools, and burns from any soldering or brazing involved in metal gas line connections.