Our accredited NICEIC ACS Initial Gas Assessment (CCN1/CPA1 + CENWAT) is the approved initial acs assessment route to becoming a fully registered Gas Safe for CCN1 (Core Gas Safety), CPA1 (Combustion Performance Analysis) and CENWAT (Central Heating Systems), on successful completion. 

What is the ACS Initial Gas Assessment (CCN1/CPA1 + CENWAT) and how does it work?

Undertaking your ACS is more about assessment than it is about learning. Most individuals undertaking Initial ACS will be doing so for the first time, having undertaken a comprehensive programme of learning and work placement — see our Managed Learning Programme (MLP) Course here.

In some circumstances, existing Engineers will undertake Initial ACS Assessment – this arises when existing certificates have expired more than 12 months ago.

Course Content

Initial ACS is a mixture of assessing both your practical skills and theory knowledge. You can undertake assessment for:

CCN 1/CPA1: Core Gas Safety / Combustion Performance Analysis

CENWAT: 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

*If candidates fail to achieve the required level of competency in either the practical or theory assessment, it may be necessary for them to re-sit the sections which they have failed. If this situation arises an additional cost may be incurred.

Who is this qualification for?

Initial ACS Assessment applies to anyone who is looking to be assessed on a natural domestic gas appliance of any kind for the very first time or where 12 months has elapsed since certificate expiry.

Are there any Entry Requirements?

Specific entry requirements apply for this course, as per the Guidance Note 8 Validation of Training (GN8 VOT) document produced by NICEIC Certification. Most candidates would have been completed a Managed Learning Programme (MLP) Course or other accepted qualifications to be eligible for their Initial ACS.

Contact us today for further information.


The duration of this assessment varies from 5 days for a CCN1 assessment and another 1 day for any additional appliances, considering there’s no training requirement prior to your assessment commencement.

Course Fee & Finance

The ACS MLP Course fee is charged at £1,000.00 + VAT (£1,200.00) which includes your CCN1 (Core Gas Safety), CPA1 (Combustion Performance Analysis) and CENWAT (Central Heating Boilers & Water Heaters) categories.

Contact us today to find out the other available completion methods of this course.

What are my progression routes after the course?

At CDC Group, we take pride in ensuring that your knowledge and skills are always improving and have a structure that would enable you to gain qualifications that would enhance your earning potentials and employment in the industry.

You could further enhance your employability and skills by considering our Water Regulations or Unvented Hot Water Systems training courses.

Contact us today should you wish to find out more information about prospective routes following your successful completion of your course with us.

Why choose us?

  • State of the art, Indoor Training Facilities
  • Brand New Plumbing & Gas Training Centre at our HQ in Hemel Hempstead
  • Highly Experienced Plumbing & Gas Trainers and Assessors
  • Affordable & Last-minute Availability
  • Conveniently Located in Hemel Hempstead (off M1, M25 & A41 in South England)
  • Over 35,000 satisfied customers to date following our 7+ years of providing excellence in training
  • 7 Days a Week Availability
  • 5-star rating Reviews on Google & Trustpilot
Please note: You must have a good understanding of spoken and written English to be able to attend this course.

ACS Initial Gas Assessment (CCN1/CPA1 + CENWAT) Additional Information

The information presented in our ACS Initial Gas Assessment is not sufficient? Contact us today if you need more detailed information about the ACS Initial Gas Assessment.

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ACS Initial Gas Assessment (CCN1/CPA1 + CENWAT)

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£1,000.00 + VAT 5 days

  • Duration5 Days
  • Places4
  • LocationHemel Hempstead HP3 9HD
  • Validity5 Years
  • LevelGas Engineer
  • CITB Grants£0.00

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