Electrical Training for All From True Industry Specialists‎ Call 02920 789701 to book your course Today
        Electrical Training for All From True Industry Specialists‎             Call 02920 789701 to book your course Today 

ACS Re-Assessment



As a current qualified ACS registered gas engineer, you will need to renew your qualifications every five years to stay on the Gas Safe Register and remain legal to work within the latest regulations. Use the “Request Reassess Reminder" link Above to ensure you don’t let your ticket lapse!

As an already qualified gas engineer looking to renew your CCN1 and/or Appliances or looking to add Appliances, you must provide the following:

  • Your GAS SAFE registration number or the GAS SAFE registration number of the business that you are employed by
  • Your National Insurance number
  • 2 recent colour photographs
  • Expired Certificates (if available)

If your ACS certificates have expired you must re-sit the ACS Assessments within 12 months of the expiry date to qualify you as a Category 1 candidate for Reassessment. While we don’t recommend no training before your Assessment, please be aware that training is not a pre-requisite of assessment.

If the date of your certificate expiry is more than

12 months ago then you will be required to sit an “Initial Assessment”. Which will consist of one week training prior to your ACS Assessment.


  • Discount available for advance booking
  • Free reminders and helpful advice as reassessment approaches
  • Local Accommodation
  • We only train in small groups (maximum of 6)

True Tech Training offer the following ACS Reassessment & ACS Initial Assessment options:



  • CCN 1/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

As per the requirements of all Awarding Bodies, the training covers changes to Standards and Technical Updates since your last Assessment. This is to update and refresh your knowledge in preparation for your ACS Assessment.


Speak to our team

Find out which course is right for you

Call 02920 789701




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© True Tech Training Ltd Company Number - 10106990. Registered office Clarke Jefferies 6 Cavendish Street Barrow-in-Furness LA14 1SB Training school address - B7 & B8 East Point Industrial Estate, Wentloog, Cardiff, CF3 2GA City & Guilds Centre Approval Number:006576 Skills Funding Agency Number:UKPRN: 10057354 © 2018. The content on this website is owned by us and our licensors. Do not copy any content (including images) without our consent.