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Domestic Gas Safety CCN1 and Appliances Reassessment

This reassessment is for experienced gas installers who are looking to renew their Core Domestic Gas Safety (CCN1) certification.

To register as a Gas Safe Registered domestic gas installer, you must hold the Domestic Gas Safety CCN1 Course and Appliances certification. You are required to undergo reassessment every five years.

Appliances covered in this reassessment are central heating and hot water, cookers and space heaters.

Candidates can be reassessed in separate modules if they do not require reassessment in all appliances.

£725 ex VAT - Training and Assessment

Or £575 Ex VAT – Reassessment 

Course Overview

The initial Core Domestic Gas Safety (CCN1) Course and Appliances course includes training and assessment in the following areas:

CCN1 – Core Domestic Gas Safety, including CPA1 (Combustion Performance Analysis)

CENWAT – Central Heating Boilers & Water Heaters

CKR1 – Cookers

HTR1 – Space Heaters (including Gas Fires and Wall Heaters)

The price of this package will be reduced for those candidates that don’t require assessment in certain appliance modules.

Impartial Examinations are undertaken under the control of UK Certification and this is separate from any Training Activity.

Entry Requirements

The CCN1 re-assessment course must be completed no more than 12 months after the expiry of the installer’s existing qualification. If the re-assessment is not completed by this date the candidate will be required to undertake the Domestic Gas Safety Course and Appliances (Initial) course.

CCN1 re-assessment can also be completed up to six months prior to the expiry date.

Course Content

Core Domestic Gas Safety CCN1 reassessment covers:

  • Combustion, relevant pressures and gas rates
  • Gas pipe work
  • Tightness testing and purging, including low and medium pressure
  • Chimney systems recognition and testing
  • Ventilation
  • Gas controls
  • Flue gas analysis

Gas appliance reassessment covers:

  • Installation defects
  • Basic gas safety fault finding

Re-assessment combines practical tests and multiple-choice test papers.

How to book

Call today to find out the next available course start date or fill in your details below and one of our team will call you back.


Call - 01924 973260


    This course will be held at our NGCFE Training Centre:

    NGCFE, Unit 5 Innovation Square, Featherstone WF7 6NX


    Why choose the National Gas Centre for Excellence?

    At the National Gas Centre for Excellence we are dedicated to making sure that you leave us with the qualifications you need to carry out your chosen trade or to take your career to the next level.

    Our modern facilities and experienced course leaders will provide everything you need to gain the right mix of knowledge and experience and pass any necessary assessments.

    Features include:

    • Expert course leaders with years of practical experience in the trade
    • Lunch and refreshments included as part of every on-site course
    • Fully fitted classrooms with all the equipment and fully working systems you need to gain real world practical experience.
    • Free onsite parking
    • Qualifications provided by UK Certification
    • A dedication to helping you through each course and pass the assessment first time

    We look forward to supporting you on your learning journey and providing you with the mix of skills and qualifications that can make a real difference to you and your customers.

    Related Courses

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    Domestic Gas Safety CCN1 Course and Appliances (Initial) course



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