If you're arranging gas work — whether it's a new cooktop, a gas hot water system, or a suspected leak — you'll see the terms "gas plumber" and "gas fitter" used almost interchangeably. They're closely related, but understanding the distinction helps you make sure the person you're booking is actually licensed to do the work.
What is a gas fitter?
A gas fitter is a tradesperson licensed specifically to install, repair and maintain gas appliances and gas piping. In Queensland, gas fitting is a separate licence class from plumbing, and any work involving gas must be carried out (or supervised) by someone holding that licence.
Gas fitting work includes installing and connecting gas appliances, running gas pipework, converting appliances between natural gas and LPG, testing for gas leaks, and issuing compliance certificates for the work performed.
What is a gas plumber?
A gas plumber is a plumber who also holds a gas fitting licence. In practice, most gas work in a home — gas hot water systems, gas cooktops, gas heaters — involves both water and gas systems, so a plumber who is also licensed for gas fitting can handle the whole job without bringing in a second tradesperson.
This matters because gas hot water systems, for example, connect to both the water supply and the gas supply. A plumber without a gas licence can do the water side but cannot legally connect or commission the gas side.
Why licensing matters
Gas work is strictly regulated for safety reasons. Incorrectly installed gas appliances can leak, produce carbon monoxide, or create fire risks. In Queensland, gas fitting must be performed by a licensed gas fitter, and the work must comply with Australian Standard AS5601.
Before booking gas work, ask the tradesperson whether they hold a current gas fitting licence. A plumber who is also a licensed gas fitter can handle both the plumbing and gas components of jobs like hot water system installation or gas cooktop replacement.
Who do I need for common gas jobs?
- Gas hot water installation or repair — a gas plumber (a plumber licensed for gas fitting), because both water and gas connections are involved.
- Gas cooktop or oven installation — a licensed gas fitter, who may also be a plumber.
- Suspected gas leak — a licensed gas fitter. If you smell gas, follow your gas supplier's emergency advice first, then arrange professional gas fitting and leak repair
- Natural gas to LPG conversion — a licensed gas fitter, as the appliance must be converted and re-commissioned to the new gas type.
The short version
Every gas fitter is licensed for gas work, but not every plumber is a gas fitter. For most residential gas jobs on the Gold Coast, the most practical option is a plumber who also holds a gas fitting licence — they can complete both the water and gas sides of the job. Our team at GC Plumbing Services is licensed for both plumbing and gas fitting, so we can handle the full scope of gas-related work.
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