Pipefitter licensing in Washington

Nothing to bring — Washington runs no mechanical worker program at all: its 'HVAC license' is an ELECTRICAL specialty certificate for refrigeration systems, its plumbers are L&I-certified for plumbing scope (with a medical-gas piping endorsement as the specialty layer), and nothing fitter-titled exists in either program. Steam, hydronic and process piping carry no Washington card.

Nothing pending on fitter scope — no license exists.

No fitter exam exists. Plumbing-scoped work runs on the journey-level plumber certification (med-gas piping needs that program's endorsement); refrigeration-SYSTEMS electrical work runs on the 06A specialty card. On boiler installs, ask first — Washington runs a real boiler section whose installer rules we still owe a read.

No fitter tier. Plumber trainee certification and the electrical-specialty trainee lanes serve their own trades.

None — L&I administers statewide.

The employing company registers as a CONTRACTOR with L&I (bond-and-insurance registration, not a trade exam), plus electrical contractor licensure where the work is electrical-program scope. Verify registrations at L&I's verify tool; expect no worker cards on the crew.