Core qualifications need to be kept up-to-date to ensure continuous accreditation, compliance and Gas Safe registration. Is it time to book your ACS reassessment?

If your ACS has recently expired or is due to expire soon, you will need to renew (by doing a reassessment) in order to renew your Gas Safe Registration.

Gas Safe Registrations are renewed annually, in advance of the registration expiry date to ensure you can continue to work legally on gas.

What is ACS?

Accredited Certification Scheme (ACS for short) are industry-recognised core qualifications in the gas industry.

The initial ACS assessment (CCN1/CPA1) is a requirement of the Gas Safe Register, meaning that all gas engineers need to have it before they can apply for Gas Safe Registration – a legal requirement for working in the UK.

Completing the assessment proves that you, the gas engineer, have the appropriate skills and knowledge about gas safety regulations and procedures.

The initial ACS accreditation lasts for five years. After that, a reassessment has to be done to renew the qualification. There are separate ACS for domestic or commercial settings.

What is ACS Reassessment?

ACS Reassessment is for category 1 candidates – experienced gas fitters already working in the industry who have existing knowledge and skills and are looking to renew their certification if it’s expired in the last 12 months.  It can also be done up to 6 months before any element is due to expire.

The ACS Reassessment is covered over 5 days of assessments on your practical skills and theory.

Renew your ACS qualification with Able Skills

At Able Skills you can undertake assessments in the following:  

  • CCN1/CPA1: Core Gas Safety
  • CENWAT 1: Central Heating Boilers
  • CPA 1: Combustion Performance Analysis
  • CKR 1: Domestic Cookers
  • HTR 1: Gas Fires and Wall Heaters
  • MET 1: Meters
  • DAH 1: Warm Air Heating Appliances

To renew your CCN1 and/or appliances, you’ll need to provide your Gas Safe Registration number and some other details such as NI, colour photographs, and previous expired certificate.

You can find out more about ACS Reassessment here or call us on 01322 280202 to book in your ACS reassessment in 2025.