Best Gas Courses to Take After CCN1 (Core Domestic Gas Safety)
If you’ve completed your CCN1 (Core Domestic Gas Safety) qualification, congratulations, you’ve achieved one of the most important milestones in your gas engineering career. But many engineers stop there without realising how much further they can go. Upskilling after CCN1 can open the door to higher-paying work, new types of installations, and better long-term security in a changing energy industry.
At T-Gas Northern, we help qualified engineers take that next step. Here’s a breakdown of the most valuable courses to consider once you’ve passed your CCN1.
Commercial Gas Courses
Moving from domestic to commercial work is one of the biggest steps you can take to grow your career and income. The CODNCO1 qualification enables you to work on larger boilers, pipework, and systems typically found in schools, factories, and office buildings.
Commercial engineers are in short supply, and this course can make you stand out from the competition.
Unvented Hot Water (G3) Certification
Unvented hot water systems are now standard in many modern homes. The G3 qualification enables you to install and service these safely. Even if you’re focused on boiler work, G3 certification gives you an edge, especially if you want to offer full heating system installations.
Choosing the Right Path
Your next course depends on your experience, interests, and career goals. If you mainly work in homes, appliance add-ons and G3 certification might be best. If you want to move into larger systems or commercial contracts, CODNCO1 is the logical next step.
At T-Gas Northern, we offer tailored advice to help you choose the right training route. Our experienced tutors will assess your existing qualifications and guide you on the most effective progression plan.
Whether you want to move into commercial work, expand your qualifications, or renew your ACS, T-Gas Northern can help.

