Gas, Oil, Plumbing, Electrical, Renewable Energy, Solid Fuel and Street Works Training and Assessment Centre CSCS Cards and Online Courses
Gas, Oil, Plumbing, Electrical, Renewable Energy, Solid Fuel and Street WorksTraining and Assessment CentreCSCS Cards and Online Courses 

DAH1 - Warm Air Heaters


Gas Safety Assessment is designed to test the gas safety competence of an operative in the work of:

  • Install
  • Exchange
  • Disconnect
  • Service
  • Repair
  • Breakdown 
  • Commission domestic gas fired ducted-air heaters not exceeding 70kW input

Range of appliances covered include:

  • Open flued natural convection
  • Open flued fan assisted
  • Up flow
  • Down flow
  • Horizontal flow models

Non Domestic engineers can undertake Domestic DAH1, without the need to undertake CCN1, only if they encounter domestic sized appliances within non domestic premises.



  • Hold a current CCN1 certificate
  • Candidates undertaking DAH1 for the first time would complete such assessments as initial assessments
  • Candidates renewing their elements would undertake as re-assessments as long as their previous elements have not lapsed by more than 12 months


Course Duration

  • 1 day

Can be assessment only or training and assessment

  • You will need to bring with you

  • Candidate name and address
  • Candidate National Insurance number
  • 2 passport sized photographs
  • Copies of relevant qualifications and/or evidence of gas work experience
  • A declaration of the category for the individual making the application
  • First-time applicants will also be required to provide an acceptable  form of photographic identification e.g. a passport or driving licence

Oxford Energy Academy Ltd

Avenue One

Station Lane



OX28 4XZ


Tel: 01993 771155

email: or


Reception hours

A team member will be available to talk to you from

8.30am to 5.00pm        Mon to Fri.                    


You can also use our Contact Form.



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