Updated December 2025
There's no doubt that gas-powered appliances play an extremely important role in our lives. They're used for cooking meals, safely storing food, heating buildings, and many other purposes in residential, commercial, and industrial settings.
However, they must be properly installed and maintained by trained professionals to function effectively and safely.
Installing and servicing these types of appliances is the job of the gas technician. It's a challenging and rewarding occupation that can also pave the way for plumbing, HVAC, and appliance technician work.
If you're interested in pursuing a gas tech career in Ontario, your specific duties, salary, and job opportunities are highly dependent on the level of licensing you achieve.
The starting point for work in this field is the Gas Technician 3 training program. With additional training, you can earn the more advanced G2 and G1 certifications.
Wondering what exactly is the difference between a level 3 and level 2 licence? Read on for a full breakdown.




