ACS Reassessment

ACS Reassessment
Awarding body


ACS Reassessment is for those Category 1 candidates who are experienced gas fitters with existing gas knowledge and skills. These are operatives looking to renew certificates which have expired (less than 12 months) or are due to expire. Additionally, Category 1 candidates are also those of you looking to add appliances and expand your scope of work.

Easy paymentsA small deposit secures your place on the course
Flexible TrainingChoose to train week days or at the weekends
Interest Free PaymentsPay as you train without paying any interest
Accommodation on siteAccommodation available for only £25/night

What You’ll Learn

This is a period of learning and assessment for individuals to renew their ACS certificates. Your training/revision period will be easier to determine if you can advise if you have been regularly undertaking the areas of gas work covered by your existing certification.

Reassessment 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

How You’ll Learn

At Able Skills, our aim is to provide existing Gas Engineers with an Assessment or Re-Assessment process which is straight forward and to the point. We offer a non-complex price guide which takes out the hassle of calculating your fees! With Able Skills there are no hidden extras and all prices include:

  • VAT
  • Registration  
  • Certification

*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.

Courses Open To You After

If you hold Domestic ACS and are interested in working with commercial gas appliances, Able Skills offers a Commercial Gas Changeover package which incorporates both training and ACS Commercial Assessment

Additional Info

As an experienced gas fitting operative considering renewal of CCN1 and/or Appliances or looking to add Appliances, you must provide:

  • Your GAS SAFE registration number or the GAS SAFE registration number of the business that employs you
  • Your National Insurance number
  • 2 recent colour photographs
  • Expired Certificates where available

Expired ACS certificates must be within 12 months of expiry to qualify you as a Category 1 candidate eligible for Reassessment. If your certificate expiry is more than 12 months ago then you will require Initial Assessment.

Please be aware that training is not a pre-requisite of any 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.


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 7 days a week (08.30 – 16.30) for 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.

Duration & Cost


Core Gas Safety

Up to 5 Days – Reassessment


CCN 1 + 4:

Core Gas Safety & 4 Appliances (inc CPA1)

Up to 5 Days – Reassessment


Appliance Only

Central Heating Boilers

Maximum 1 Day



Combustion Performance Analysis

Maximum 1 Day



Domestic Cookers

Maximum 1 Day



Gas Fires and Wall Heaters

Maximum 1 Day




Maximum 1 Day



Warm Air Heating Appliances

Maximum 1 Day


Availability:In stock

inc VAT