Course at a glance

Subject Area:





BPEC Certificate

Course Start:


Course Length:

5 days (2 days training & 3 days assessment)


South Bank Campus



All prices are based on the 23/24 academic year. Subsequent years are subject to a 3% increase.

For further enquiries regarding finance, please contact the finance team directly on 0113 222 6094 or

For general course enquiries, please call 0113 222 6006 or email

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COCN1 course content

The ACS Commercial Core Gas Safety COCN1 re-assessment can be taken up to 6 months prior to the expiry date of the initial qualification without losing out (MOT Style).

Gas Service Engineers must renew their ACS certificate every 5 years in order to continue conforming to the Gas Safe registration requirements.

On expiry, candidates are eligible to take re-assessment.  Previous certificates must be presented as evidence of holding the initial qualification.

This COCN1 course covers the following areas:

  • Regulations
  • Commercial installation
  • Commercial ventilation
  • Gas safety controls
  • Combination and flue gas analysis

COCN1 Entry requirements

Applicants must have recently completed the BPEC Gas Foundation Course or be experienced category 1 gas fitting operatives who hold ACS, ACoPs, S/NVQ or City & Guilds Gas Qualifications.

Next steps

Various ACS commercial courses.

Further information

This training is revision/refresher only. The assessment includes a written and practical exam.

Our gas assessment fees are not subject to VAT and include registration, certificate fees and learning materials. The training is delivered at our Hunslet Campus, in Leeds City Centre, in modern, bespoke facilities, allowing you to replicate the domestic and commercial work you do on a daily basis.

To apply for this course please contact the Services department on 0113 222 6059 or by email

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