Gas, Oil, Plumbing, Electrical, Renewable Energy, Solid Fuel. Training and Assessment Centre End Point Assessment Centre
 Gas, Oil, Plumbing, Electrical,Renewable Energy, Solid Fuel.Training and Assessment CentreEnd Point Assessment Centre 

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
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