The CCN1 qualification, or Core Domestic Natural Gas Safety, is a mandatory certification for anyone wanting to work as a gas engineer in the UK. It is part of the ACS (Accredited Certification Scheme) and is essential for anyone who wishes to become Gas Safe registered for domestic gas work.
This qualification ensures that engineers are equipped with the necessary knowledge and practical skills to work safely with natural gas systems in residential properties. It covers the basics of gas safety, such as understanding how to install and maintain gas appliances like boilers, cookers, and fires, and ensuring these appliances are running safely and efficiently.
Completing the CCN1 qualification means you are trained to handle domestic gas installations, perform gas pressure and tightness tests, and ensure that appliances are venting correctly. It also covers the safe handling of pipework and fittings, and teaches engineers how to test for gas leaks or unsafe conditions.
To obtain the CCN1 qualification, gas engineers must complete a training course that includes both theoretical learning and practical assessments. Upon successful completion of the course, the engineer is tested to ensure they understand the key safety and installation principles.
Once someone holds the CCN1 qualification, they can apply for Gas Safe registration, which is required to legally carry out gas work in the UK. This qualification is the foundation for further specializations, allowing engineers to add qualifications for specific appliances like central heating systems or cookers, expanding their range of work.
In essence, the CCN1 is the cornerstone qualification for anyone working in domestic gas engineering, ensuring they meet the strict safety standards required to protect both themselves and the people they are working for.



