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Tutors with decades of experience in the industry deliver a complete, three-step ACS Gas Training Course. With a mixture of theoretical knowledge and practical skills making up the course, students learn everything they need to know to go onto become a qualified gas engineer. On-site experience is a mandatory part of the course and it is invaluable to gas trainees.

Here at Options Skills, we provide you with support and the best platform possible from which to gain your ACS qualifications and become a gas safe registered gas engineer.

Duration: 300 Guided Learning Hours

Available for those who are complete beginners, as well as those with existing industry experience, initial training to become a gas engineer canbe tailored to suit you.

Stage one of the ACS Gas Training Course is delivered in small groups at one of the Options Skills training centres. You will be taught a mixture of theoretical information and practical skills, ranging from health and safety instruction to gas cooker installation and servicing.

This part of your gas training is designed to be an in-depth introduction to gas work and installation, preparing you to move onto stage two where you will undertake on-site work experience with a qualified gas engineer.

Centre led training can be undertaken on either a full-time or part-time basis and you will be tutored by gas engineers who have years of experience in the industry.
Duration: Minimum 100 days

Stage two of training is a legal requirement for anyone training to become a gas engineer.

During this stage, you will spend a minimum of 100 days working with a qualified gas engineer. Under their supervision, you will undertake a range of gas work, documenting this to complete a portfolio.

Your portfolio acts as evidence of the work you have undertaken as a trainee and must be of acceptable quality to allow you to progress to the next stage of training.

Options Skills can guarantee to provide students with a gas engineer with which to work if necessary.

The time taken to complete the portfolio will vary from trainee to trainee. However, there is a minimum duration of 100 days and a maximum duration of up to 2-years for you to complete this stage of your training.

Before moving onto stage three, you must pass a summative assessment. This includes; three written assessments, one practical assessment and portfolio evaluation. It is upon the completion and passing of this that you can go onto book your ACS Assessment.

Click to view student requirements to complete a successful gas portfolio
Duration: 5 Days Minimum - 10 Days Maximum

In your final stage of the ACS gas training course, you will be invited back to the training centre to undertake your ACS initial assessment.

As the industry-recognised route for gas operatives, the Accredited Certification Scheme is required to gain the certificate of competence required to become a member of the Gas Safe Register.

Including a practical and verbal examination, you will cover Gas Core Safety, Central Heating and Boilers, Gas Fires, Gas Cookers and Flue Gas Analyser – otherwise known as the domestic suite of gas qualifications.

Once you have successfully passed your ACS Gas Assessment, you can apply to become a member of the Gas Safe Register. Membership is renewable annually, and fees are payable directly to the Gas Safe Register.

Gas engineers must renew ACS gas qualifications every five years.


Division Gas Training Division
Module G1 - Centre Led Training
Course Title Domestic Gas Course
With Effect from November 2017, all new entrants to the gas industry in the UK must follow a standardised Level 3 RQF ( Regulated Qualifications Framework) gas course that is delivered by an approved gas training centre. The Managed Learning Programme (MLP) delivered by Options Skills meets the requirements of the Institution of Gas Engineers and Managers (IGEM) document Standards of Training in Gas Work IGEM/IG1 leading to:
  • The acquisition of initial Nationally Accredited Certification Scheme for Gas Fitting Operatives (ACS) certificate(s) of Gas Safety Competence.
  • The acquisition of a Regulated Qualifications Framework (RQF) in England, Wales and Northern Ireland or Scottish Credit and Qualifications Framework (SCQF) gas utilisation certificate.
  • The issue of a Training Completion Certificate (TCC).
Division Gas Training Division
Module G1 - Centre Led Training
Course Title Domestic Gas Course
Duration 300 guided learning hours plus structured self-study
Location Options Skills Training Centre
Attendance Type Full time (Monday to Friday) or part time week blocks
Suitability This programme is designed for new entrants to the gas industry
Prerequisites Candidate must be assessed for suitability prior to course attendance
Candidate must be registered with awarding body 1 week before the start of the training course
Course Objective To develop the candidates understanding and knowledge of gas regulations and critical practical skills required to work as a registered gas installer
Course Content - Theory Domestic Natural Gas
Health & Safety, Personal Protective Equipment (PPE) and risk assessments
History of the gas industry
Gas legislation
Industry unsafe situations
Installation of gas supply in domestic premises (theory)
Installation and purge volume calculations
Calculating pipe sizing for domestic appliances
Combustion of natural gas and its properties
Primary safety devices and controls (theory)
Chimney standards and principle(s) of flues
Ventilation requirements and installation requirements
Electrical safe isolation (theory)
Central heating system design and hot water storage
Knowledge and understanding of "Y" plan and "S" plan wiring systems
Knowledge and understanding of gas appliance installations and their standards
Course Content - Practical Domestic Natural Gas
The application of PPE and risk assessment
Bending and manipulation of copper tube
Installation and fabrication of steel pipe and fittings
Installing compression fittings on gas supplies
The use of a propane torch for soldering activities
Installation of pipe frames utilising a variety of jointing materials
Domestic gas meter installations
Internal pipe installation from gas meter to appliance point
Gas tightness testing following industry standard procedure
Purging of domestic gas supplies and installations
Gas pressure testing using water manometer (U gauge)
Conducting flue gas analysis on a variety of appliance types
Testing chimney performance and integrity
Measuring gas consumption and conducting gas rates on appliances
Hands on primary safety device and controls testing
Installation of gas cookers to required standards
Installation of gas fires to required standards
The service and commissioning of boiler cookers and fires
Applying electrical safe isolation techniques when working on installations
Basic central heating wiring exercises
Assessment Written and Practical Formative Assessments
Qualifications RQF Certificate of Completion of Managed Learning Programme (Gas)
Accreditation LCL Awards
Next Step G2 - On-site Portfolio Building
Division Gas Training Division
Module G2 - On-site Portfolio Building
Course Title Domestic Gas Course
Duration Open - minimum 100 days
Location In the workplace (on-site)
Attendance Type View student requirements to complete a successful gas portfolio
Suitability For new entrants to the gas industry
Prerequisites Completion of G1/Step 1 - Options Skills Managed Learning Programme (MLP)
Course Objective This is a legal requirement to enable the candidate to gain valuable on-site experience with a practising and Registered Gas Safe Installer. The trainee will work under supervision using skills gained at the training centre, building confidence, knowledge and experience
Course Content - Practical A suitable portfolio of evidence must be built under the supervision of a registered Gas Safe installer. This will include a variety of tasks such as those listed below. The portfolio isn’t limited to this list, it is intended as a guide.
Gas pipework installation up to and including 35mm
Re-installing and up-dating gas meter installation to current standards
The installation of gas cookers, ovens and hob units
The installation of gas fires and space heaters
The installation of boilers (heat only, combi and system) and central heating systems
Core gas safety activities and commissioning procedures, including:
  • Tightness test
  • Purging gas supplies
  • Ventilation calculations
  • Gas rate and heat input checks
  • Gas pressure testing (working & standing)
  • Combustion analysis
  • Chimney performance and testing
  • Appliance safety devices and controls testing
  • Applying unsafe situations procedure and the disconnection of appliances
The service/maintenance and break down of cookers, ovens and hob units
The service/maintenance and break down of gas fires and space heaters
The service/maintenance and break down of central heating boilers and heating systems
Conduct and complete Landlord Safety Checks
Prerequisites On completion of an on-site portfolio, the portfolio will be assessed and verified by Options Skills to industry standard awarding body criteria.
Content - Practical and Theory Summative practical and theory assessments
Assessment Conduct a series of summative written papers and complete an hour long summative practical assessment in a designated training/assessment centre.
Qualifications DNGA1-5 MLP Certification
Accreditation LCL Awards
Next Step G3 - ACS Initial Training and Assessment
Division Gas Training Division
Module G3 - ACS Initial Assessment
Course Title Domestic Gas Course
Duration 5 Days Minimum - 10 Days Maximum
Location Training Centre
Attendance Type Full time (Monday to Friday)
Suitability For people that wish to gain ACS Gas Qualifications
Prerequisites For candidates that have completed G1 Managed Learning Programme, then G2 on-site portfolio and summative assessments. Candidate will only be assessed for appliances/ qualifications listed below if he or she has built sufficient evidence within their portfolio.
Course Objective Assess learner’s knowledge and understanding of domestic gas core gas safety. If successful the candidate will obtain ACS Gas Qualifications that will allow them to apply for Gas Safe Registration in their own right or work as an approved operative for a Gas Safe Registered organisation
Content - Theory and Practical Refresher training and preparation for assessment
Assessment Written and practical assessment in Core Gas Safety. Gas Safety for domestic appliances; boilers & water heaters, gas fires (space heaters) and gas cookers)
Qualifications Domestic Suite of Gas Qualifications
  • CCN1 - Core Gas Safety (Includes CPA1 - Flue Gas Analyser)
  • CENWAT - Central Heating Boilers and Water Heaters
  • CKR1 - Gas Cookers
  • HTR1 - Gas Fires
Accreditation LCL Awards
Next Step Apply for Gas Safe Registration

Up to 31st December 2020 Regulated qualifications and UKAS Accredited certificates of competence issued in the UK were widely recognised by other EU member states. However since the UK’s withdrawal from the EU, individual member states that previously recognised a UK qualification may now no longer do so. Learners undertaking qualifications on the basis that it is recognised by an EU member state should in the first instance make enquiries with the relevant bodies in that Country to confirm its recognition status.

Prices for the ACS Domestic Gas Training course start from £6,750*

Prompt payment only.
Learning a trade such as gas engineering opens up a world of opportunities. Not only do you learn a skill for life, but you create the opportunity to become your own boss. Being self-employed, you can set your own working hours, rate of pay and choose which jobs you will undertake.

In the industry, you also get the benefit of variety. No working day will be the same, you’ll be working on different jobs, for different people and in various locations.

With a shortage of skilled workers across the board and an increase in housing being built, tradespeople such as gas engineers are in high demand. Those already in the trade are earning an average annual income of £32,500, but there is great potential for an even higher amount.

For more information, read Why Become A Gas Engineer and How Much Can I Earn As A Gas Engineer.
Options Skills offer a great service and we provide you with the best opportunity to begin your career as a gas engineer.

Throughout training, you will have a student liaison manager ensuring everything is going smoothly and who you can talk to if ever necessary. We continue to offer support even after you’ve completed your ACS gas training course and qualified.

During your time here, you will be taught by tutors with years of industry experience, who really know the ins and outs of the industry. You will also undertake on-site training, ensuring you’re fully introduced to the industry and have sufficient experience before you begin working independently.
If you know an experienced gas engineer who is happy supervise you, you can work with them as you build your portfolio of work.

However, if you don't, here at Options Skills, we guarantee to find you a qualified gas engineer to act as your mentor during step two of your ACS gas training course.

Due to years of experience in the industry, Options Skills have built up an impressive network of gas engineers, meaning we will be able to place you with someone local to allow you to complete your gas portfolio.
If you fail any of your exams, we do offer students the opportunity to resit them. Options Skills will provide students with extra training or support if necessary, free of charge to help prepare you for your re-examination.
Unfortunately, we cannot provide those who fail their exams with a refund. We do, however, offer the chance for students to retake their exams and we can provide extra training and support necessary.
If you have previous experience working as a gas engineer, we will not ask you to undertake any training other than what is necessary. The best course of action, if you have experience in the industry, is to call our advisors to discuss your situation. They will be able to arrange a training plan tailored to you.
Options Skills are in no way able to guarantee any student will pass the exam. However, we do provide our students with expert training and that, combined with hard work and dedication will give you the best opportunity to pass the exam
While we will provide students with excellent training - both practical and theoretical – we will not teach you how to pass the exam. Passing any exams or assignments is dependent on your level of knowledge, dedication and hard-work.