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Tickets that raise your rate
Master plumber or master gas fitter
The license you need to pull permits and run your own company. An extra exam after years at the journey level.
Pipe welding certification
A separate certification that opens up gas and process piping on commercial and industrial jobs.
HVAC (heating, ventilation and air conditioning) certification
Combining gas with furnace and boiler work makes you a one-truck solution for a homeowner.
Medical gas certification
Hospital oxygen and vacuum piping is a specialty with its own certification.
Propane certification
Rural and recreational propane systems follow their own rules and need their own training.