3 Steps To Becoming a Gas Engineer

Prior Learning & Gas Course

Join our Tutor Led Training, or Log In and Complete Lessons & Progress Assessments in your own time from a tablet or phone.
Access 24/7 - 365

Learn Fast & At Your Own Speed 

Portfolio & Practical Training

 Join our engineering division to transfer theory into practice and build your Portfolio. Trainees will be able to attend college/centre on set dates to enhance their skills and confidence

Learn Fast With Professionals

ACS Initial Assessment

In Centre / college refresher training followed by theory and practical assessment on CCN1, CPA1, CENWAT, and any other appliances you have experience and evidence working on.

Pass Fast With Professionals

Gas Engineer Training With CTS Group 2025/2028

6, 12, and 18 Month Training Options
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Train From Within a Leading Gas Company To Become a Leading Gas Engineer

Learning Online

There are over 20 learning modules in the Domestic Gas Level 3 Syllabus. These are delivered via our secure online classroom. The lessons are recorded for anyone who can't attend or who would rather complete in their own time. 

Lessons and exams can be repeated until understood and absorbed, and the necessary 100% Competence Achieved.


  Try a Lesson & Exam For Free  
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Training On Gas Safety,  Boiler & Heating Repairs,  Gas Service & Installation 

Included In Our Training Plans

ACS Gas Training 

The Level 3 Domestic Gas Safety Training Modules cover the following Subjects in easy to learn, repeatable audio visual presentations and are constantly updated. Each subject has a written examination with feedback and hours spent updated to your centre 
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  • Gas Safety Legislation
  • Gas Rates & Heat Inputs
  • Gas Pressures (Dynamic & Standing)
  • Gas Pipe Sizing
  • Characteristics of Gas
  • Characteristics of Combustion
  • Flue & Chimney Standards
  • Ventilation Standards
  • Pipework Installation and Faults
  • Gas Controls & Safety Devices
  • Gas Safety Regulations
  • CPA1 (Combustion Performance)
  • Re-Establishing Gas Supplies
  • Emergency Actions & Procedures
  • ​Gas Tightness testing & Purging
  • Safe Electrical Isolation
  • CCN1, CPA1, CENWAT,  MET1, CKR1, HTR1
  • Domestic LPG (Bottled and Tank)

Repairs Training

Join Top Industry Professionals and learn how to become a  Diagnostic and Boiler Breakdown Engineer.  Only a small percentage of gas engineers are able to confidently diagnose and repair boiler and gas appliance faults. The Course Includes

  • Design and Fault Finding on Water Heaters
  • Design & Fault Finding on Type 1 and 2 Gas Heat Only Boilers
  • Design & Fault Finding on HE & Heat and System Boilers
  • Safe Electrical testing - Using a Multimeter to Load Test, Check Impedance, and  to test individual components.
  • Polarity and Continuity Testing
  • Gas Fault Diagnostics
  • Primary Aqua Diagnostics
  • Electrical Fault Diagnosis
  • Part Recognition & Purpose
  • Combination Boiler Design and Fault Finding
  • C, Y, and S Plan wiring, Fault Finding and Diagnostics
  • Heating Design Principles
  • Level 2 Certified VRQ

Gas Service Training

For most graduating students, Landlord Gas Safety Inspections and Appliance servicing is usually the first discipline applied. 

It is therefore important that would be gas engineers learn not only the acs gas safety procedures, but also specific skills in order to safely service and maintain gas boilers, fires, cookers and the such.

These training modules are part of our approved contractors training route and are a must for anyone seeking employment or self employment on completion of the gas safety training

The Gas Service Engineer Course is delivered over 3 modules with a written multiple choice assessment for Certification purposes

This course which is included covers all appliance, including
  • Gas Water Heaters
  • Gas Boilers
  • Gas Fires & Space Heater
  • Gas Back Boiler and Fire Installations
  • Warm Air Heating
  • More

Training Costs

Stage 1 

From £680 + Vat for related trades to
£990 + Vat for New Entrants 

Low Cost Entry Level Course
Start Date (1st of Each Month)

Stage 2

From £800 + Vat For Related Trades to
£2400 + Vat For New Entrants

If you have your own mentor this will reduce the costs here

Step 3

 Prices From £1500 + Vat for related trades with experience

Your Price is directly equated to your own capability  
Training & Assessment Locations throughout the UK (London, Hampshire, Kent, West Midlands, Glasgow)
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​T: 01413451545 or 08001185928
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