The ACS Initial Domestic Gas Safety course at Teach A Trade is designed for learners and engineers who are ready to complete their initial ACS assessment and take the next step towards Gas Safe registration. Delivered from our practical training centre in Telford, this course covers the core domestic gas safety assessment, commonly known as CCN1, along with the key appliance modules required for domestic gas work.
This course is suitable for candidates who have completed a recognised gas training route, such as a Gas Managed Learning Programme, or who have relevant industry experience and now need to complete their ACS Initial assessment. It is also suitable for engineers whose ACS qualifications have expired beyond the reassessment window and who therefore need to complete the initial assessment route again.
Throughout the course, candidates are assessed against the standards required to work safely and competently on domestic gas installations and appliances. The programme includes a combination of theory assessments, practical assessments and appliance-specific assessment tasks, helping candidates demonstrate the competence required before applying to the Gas Safe Register.
Course Structure
The ACS Initial Domestic Gas Safety course is delivered over five days. The course includes preparation, practical assessment and theory assessment across core domestic gas safety and the standard domestic appliance modules.
Candidates will complete CCN1 Core Domestic Gas Safety first, followed by the relevant appliance modules. The standard package includes CENWAT, CKR1 and HTR1. MET1 can also be added where required, depending on the type of work the candidate intends to carry out.
5 Days
Who Should Attend
This course is suitable for:
- Learners who have completed a Gas Managed Learning Programme.
- Candidates progressing towards Gas Safe registration.
- Trainee gas engineers ready for ACS Initial assessment.
- Engineers with relevant industry experience who meet ACS entry requirements.
- Candidates whose ACS qualifications have expired beyond the reassessment period (12 months).
- Plumbing or heating engineers progressing into domestic gas work.
- Employers putting new gas engineers through their initial ACS route.
Candidates attend Teach A Trade from Telford, Shrewsbury, Wolverhampton, Walsall, Dudley, Birmingham, Coventry, Stafford and across Shropshire and the wider West Midlands.
What the Course Covers
The course covers the key areas required for domestic gas safety assessment, including:
- Gas safety legislation and regulations.
- Gas Safe Register responsibilities.
- Emergency actions and unsafe situations.
- Domestic gas pipework.
- Tightness testing and purging.
- Ventilation requirements.
- Flues and chimneys.
- Combustion and combustion performance analysis.
- Appliance installation and commissioning.
- Servicing and safety checks.
- Fault diagnosis and rectification.
- Practical assessment on domestic gas appliances.
Standard Appliance Modules
- CCN1 — Core Domestic Gas Safety.
- CENWAT — Central heating boilers and water heaters.
- CKR1 — Domestic cooking appliances.
- HTR1 — Gas fires and wall heaters.
- MET1 — Domestic gas meters, available as an optional add-on.
Entry Requirements
Candidates must meet the required ACS entry criteria before being accepted onto the Initial Domestic Gas Safety assessment. This normally means you must have completed a recognised training programme, hold relevant qualifications, or be able to provide evidence of suitable industry experience.
Before booking, candidates may be asked to provide:
- Evidence of gas training or a completed Managed Learning Programme.
- A completed portfolio of workplace evidence.
- Proof of relevant plumbing, heating or mechanical services experience.
- Previous gas certificates, where applicable.
- Employer or mentor confirmation of supervised gas work.
- Photo ID and National Insurance number.
If you are unsure whether you meet the entry requirements, contact Teach A Trade before booking. We can review your background and advise whether you are ready for ACS Initial assessment or whether further training or portfolio evidence is required first.
Pre Requisites
Candidates must be ready to complete CCN1 Core Domestic Gas Safety before progressing onto appliance modules. CCN1 is the core assessment and is required before CENWAT, CKR1, HTR1 or MET1 can be completed.
For most new entrants, the ACS Initial assessment follows completion of a recognised Gas Managed Learning Programme and a suitable portfolio of supervised workplace evidence. Candidates should not book ACS Initial until they have been advised that their training and evidence are sufficient.
If your previous ACS qualifications have expired for more than 12 months, you may need to complete the Initial ACS route rather than the shorter reassessment route. We can confirm the correct option before you book.
Expiry
5 years
ACS certificates are normally valid for five years. Once your certificates are nearing expiry, you will need to complete ACS Reassessment to maintain your Gas Safe registration.
Assessment
The ACS Initial assessment includes both theory and practical assessment activities, including:
- Written and multiple-choice theory assessments.
- Core Domestic Gas Safety assessment.
- Practical assessment on gas pipework.
- Tightness testing and purging.
- Appliance commissioning and safety checks.
- Combustion performance analysis.
- Flue and ventilation assessment.
- Fault-finding and unsafe-situation scenarios.
- Appliance-specific assessments for CENWAT, CKR1 and HTR1.
- Optional MET1 assessment where required.
The purpose of the assessment is to confirm that candidates can work safely, competently and independently before applying to the Gas Safe Register.
Additional Information
On the day of assessment, candidates should bring:
- Photo ID.
- National Insurance number.
- Two passport-style photographs, if required.
- Evidence of previous training or qualifications.
- Completed portfolio evidence, where applicable.
- Any expired ACS certificates, where relevant.
- Calculator.
- Pens and note-taking materials.
- Suitable workwear and PPE for practical assessment.
Assessment days are structured and demanding, so candidates should arrive prepared. If you are unsure what evidence to bring, speak to the Teach A Trade team before your course start date.
Course Fees & What’s Included
The ACS Initial Domestic Gas Safety course is £999 +VAT. This includes the five-day assessment route covering CCN1 Core Domestic Gas Safety and the standard domestic appliance modules: CENWAT, CKR1 and HTR1.
This course is designed to give candidates a clear and structured assessment route into domestic gas work. It includes access to our gas training centre, practical assessment rigs, theory assessment facilities and support from experienced gas trainers and assessors.
What’s included bullets:
- Five-day ACS Initial assessment programme.
- CCN1 Core Domestic Gas Safety assessment.
- CENWAT assessment.
- CKR1 assessment.
- HTR1 assessment.
- Practical workshop assessment.
- Theory assessment.
- Certification and assessment administration.
MET1 can be added where required.
If you need additional appliance modules or are unsure which assessments you need, contact us before booking and we will advise on the correct route.
£999 +VAT
CCN1 + CENWAT + CKR1 + HTR1
MET1 available as an optional add-on
ACS Initial Training in Telford, Shropshire & the West Midlands
Teach A Trade delivers ACS Initial Domestic Gas Safety assessment from our practical training centre on Halesfield 23 in Telford, Shropshire. The centre is close to the M54, making it easy to access from Wolverhampton, Walsall, Dudley, Birmingham, Coventry, Stafford, Stoke-on-Trent, Shrewsbury, Bridgnorth, Whitchurch, Oswestry and the wider West Midlands.
For learners progressing from a Gas Managed Learning Programme, choosing the right ACS assessment centre is an important step. You need a centre that understands the full training journey, from initial learning and portfolio evidence through to final ACS assessment and Gas Safe registration.
Teach A Trade supports candidates from across Shropshire and the West Midlands with practical, assessment-focused gas training. Whether you are a new entrant, a trainee gas engineer or a candidate returning to the industry after expired certificates, our ACS Initial course provides a clear route towards becoming a qualified domestic gas engineer.
Frequently Asked Questions
Q1: What is ACS Initial Domestic Gas Safety?
ACS Initial Domestic Gas Safety is the assessment route for candidates who are completing ACS for the first time, or for engineers whose previous ACS qualifications have expired beyond the reassessment window. It includes CCN1 Core Domestic Gas Safety and relevant appliance modules.
Q2: Is ACS Initial the same as ACS Reassessment?
No. ACS Initial is for new candidates or engineers who need to complete the full initial assessment route. ACS Reassessment is for existing gas engineers renewing current or recently expired ACS qualifications.
Q3: Can I apply for Gas Safe registration after passing ACS Initial?
Yes. Once you have successfully completed ACS Initial and received the relevant certification, you can apply to the Gas Safe Register for the categories you have achieved.
Q4: How long does the ACS Initial course take?
The ACS Initial Domestic Gas Safety course is delivered over five days.
Q5: What modules are included in the price?
The standard course includes CCN1, CENWAT, CKR1 and HTR1. MET1 can be added as an optional extra if required.
Q6: How much does the ACS Initial course cost?
The ACS Initial Domestic Gas Safety course is £999 +VAT. Additional modules, such as MET1, may be priced separately.
Q7: Do I need a portfolio before booking ACS Initial?
Most new entrant candidates will need a completed portfolio of supervised gas work before completing ACS Initial. If you are unsure whether your portfolio is sufficient, contact Teach A Trade before booking.
Q8: Where is the ACS Initial course delivered?
The course is delivered at Teach A Trade’s training centre in Telford, Shropshire. We support learners and engineers from across Telford, Shrewsbury, Wolverhampton, Walsall, Dudley, Birmingham, Coventry, Stafford and the wider West Midlands.
Q9: What happens if I fail part of the assessment?
If you are unsuccessful in part of the assessment, we will advise you on the areas that need further work and explain the next steps for reassessment or additional support.
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