ACS Initial Assessment

If you need to undertake assessment for your core gas (CCN1) and/or appliances either for the first time or if your existing ACS expired over 12 months ago, any assessment you undertake will be categorised as INITIAL.

QualificationCCN1 / CENWAT / CPA / CKR / HTR etc
LocationDartford, Kent (Accommodation Available)
Entry Requirements

Undertaken Gas training & Portfolio OR ACS has expired over 12 months


1 Week (Mon - Fri)

Easy payments
Flexible Training
Interest Free Payments
Accommodation Available

Duration & Cost


Core Gas Safety£700.00 including vatUp to 5 Days – Initial Assessment

CCN 1 + 4:

Core Gas Safety & 4 Appliances (inc CPA1)£995.00 including vatUp to 5 Days – Initial Assessment


Central Heating Boilers£150.00 including vatMaximum 1 Day


Combustion Performance Analysis£150.00 including vatMaximum 1 Day


Domestic Cookers£150.00 including vatMaximum 1 Day


Gas Fires and Wall Heaters£150.00 including vatMaximum 1 Day


Meters£150.00 including vatMaximum 1 Day


Warm Air Heating Appliances£150.00 including vatMaximum 1 Day

Course details

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.

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

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

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

*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.

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

You will be required to provide us with:

  • Your National Insurance number
  • 2 recent colour photographs

If you come under the category of someone who has held ACS but this has expired more than 12 months ago, please be aware that training is not a requirement prior to assessment.

Please be aware that we will allocate a full 5 days for this assessment process. If you fail at any stage or run out of time, you will need to rebook and you will need to pay again for the full weeks fees. Our student/instructor ratio is set by our certificating body and we are unable to slot in odd days.

Gas Engineer Courses at Able Skills



All of our courses take place at our dedicated training centre in Dartford, Kent. The centre is easily accessible by road, being just 10 minutes from junction 1a on the M25. We are only a short walk from Dartford train station which is served by frequent trains taking 35 minutes from central London. For anyone travelling from further away, we have our own accommodation available at only £25 per night.

We are open Mon - Fri and 2 weekends per month for training and visitors so if you would like to find out more about this course or about Able Skills, please feel free to pop in, no appointment necessary.

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