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3-Day ACS Renewals in Southampton

To operate professionally, it’s legally required that gas engineers are Gas Safe registered. The Gas Safe Register requires that an engineer possess an ACS Core Gas qualification before registration is confirmed.

A compulsory component of ACS is CCN1 (Core Domestic Gas Safety) or CMA1/3 (SMART Meter Installer Core) where re-assessment is needed every five years.

If an ACS qualification expires, it will need to be renewed in a five-day initial course. If certification has not yet expired, renewal can be completed in just three days with our refresher course.

With a day of guidebook training, a day of practical assessment and a final day for theory assessment, the CCN1 refresher covers:

  • Combustion, relevant pressures and gas rates
  • Legislation and standards
  • Installation of pipework and fittings
  • Gas controls
  • Tightness testing and purging
  • Ventilation
  • Flue gas analysis

Our experienced trainers and assessors are ready and available throughout to provide you with support. By the end of this course you will meet one of the key requirements needed to legally operate as a gas engineer.

At SERT we pride ourselves in a quick turnaround with our awarding body. We assure no delays in your Gas Safe registration and course certification.

Before attending you will need an existing certificate demonstrating your competence for ACS, no longer than 6-months beyond its expiry date.

All gas courses are taken at our fully equipped gas centre in Woolston.


SERT's specialist Divisions

Public Sector

Resourcing solutions within Defence, Professional Services and Education.


Utilities and Green Energy

Mobilising workforces that install, maintain, and manage the UK's current and future infrastructure.

The Retrofit Academy - Hampshire

The Retrofit Academy (TRA) and workforce solutions and training specialist, SERT Training have established an exclusive partnership to launch The Retrofit Academy Hampshire. Find out more about training and career opportunities within the retrofit industries here!