Bryn Lane, Wrexham. LL13 9UT
Bryn Lane, Wrexham. LL13 9UT
This comprehensive ACS course includes Core Domestic Gas Safety (CCN1) and key appliance modules: boilers (CENWAT), cookers (CKR1), and gas fires (HTR1). Ideal for engineers needing initial assessment or 5-year reassessment. Includes refresher training and assessment.
The Domestic Natural Gas ACS Package at Vulcana Training is specifically designed for gas engineers who need to obtain or renew their qualifications for working on domestic natural gas appliances. This course combines CCN1 (Core Domestic Gas Safety) with key appliance modules, ensuring you have the skills and knowledge to safely install, maintain, and repair a wide range of domestic gas appliances.
The modules included in this package are:
CCN1 – Core Domestic Gas Safety (compulsory for all domestic gas engineers)
CENWAT – Boilers & Water Heaters (required for central heating and hot water systems)
CKR1 – Domestic Cookers (for gas hobs, cookers, and range-style ovens)
HTR1 – Gas Fires & Space Heaters (for wall heaters and decorative gas fires)
Throughout the course, you will gain a solid working understanding of:
Gas safety regulations and your responsibilities under the Gas Safe Register
Safe installation, servicing and maintenance of domestic appliances
Tightness testing and purging to check system integrity
Combustion analysis to confirm correct operation and efficiency
Emergency actions in the event of a gas escape or unsafe situation
Successful completion of Domestic Natural Gas ACS Package enables you to legally work on domestic gas appliances in line with current industry standards. ACS certification is also a mandatory requirement for Gas Safe registration.
CCN1 – Core Domestic Gas Safety
Covers all core safety requirements, including legislation, pipework, pressure testing, flueing, ventilation, appliance installation, and dealing with unsafe situations.
CENWAT – Central Heating Boilers and Water Heaters
Focuses on the installation, commissioning, servicing and fault diagnosis of gas-fired boilers and water heaters.
CKR1 – Domestic Cookers
Covers gas cooker installation and servicing, including both freestanding and built-in types.
HTR1 – Gas Fires and Space Heaters
Includes open-flue and room-sealed gas fires, wall heaters, and decorative fuel effect appliances.
Each module involves both theory and practical assessments, with refresher training included at the start of the course.
These modules can be added to your package to broaden your scope of work:
Unvented Hot Water – For installation and maintenance of unvented hot water storage systems
Water Regulations – Covers compliance with the Water Supply (Water Fittings) Regulations 1999
DAH1 – Warm Air Heating – Adds warm air heating appliance installation and servicing
MET1 – Meters – For work involving domestic gas meter installation and exchange
These are ideal for engineers looking to expand their services in the domestic sector.
This route is for candidates who either:
Previously held these qualifications, but they expired more than 12 months ago, or
Are completing their first ACS assessment and hold a valid Managed Learning Programme (MLP) certificate or equivalent recognised training.
Evidence of relevant qualifications must be provided at the time of booking.
If you are an existing Gas Safe registered engineer, you are required to renew your ACS qualifications every five years. To be eligible for reassessment, you must:
Hold a valid, in-date ACS certificate for CCN1, CENWAT, CKR1 and HTR1, or
Have a certificate that expired less than 12 months ago.
If your qualification expired over 12 months ago, you will need to take the initial assessment route instead. Reassessment ensures your knowledge remains current with industry regulations and safety standards and helps avoid any interruption to your Gas Safe registration.
All our courses include refresher training and are delivered in a supportive setting to help you feel confident and well-prepared for assessment.
Yes, training manuals and certificates are included in the course fees, except for OFTEC reassessment course training material, where are charged separately.
Any required study materials will be provided on the first day of your course. However, if you prefer to collect them in advance, you can do so by making prior arrangements with us.
With a 99.9% pass rate, it’s unlikely—but if you don’t pass, we’ll discuss your options, including reassessment and additional training if needed.
Yes, we offer refresher training to help candidates prepare for reassessments. Contact us to discuss available options.
We offer various payment options, including installment plans for selected courses. Please contact us to discuss available payment plans.
You can book online using the “Book Now” button on our website, email us at office@vulcana.co.uk, or call 01978 660300. If you don’t see the course you need on our booking system, please contact us, as we may still be running it.
You will need to bring:
Our training centre is located at:
Bryn Lane, Wrexham Industrial Estate, LL13 9UT
We are opposite the petrol station.
Certificates are sent directly to your home address once they have been processed by the awarding body. Processing times can vary, so please allow some time for delivery.
For full details on cancellations and refunds, please refer to our cancellation policy or contact us directly.
