Courses and qualifications for Gas, Water, Oil, and Renewables professionals

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1st Class Gas Training and assesment
Welcome to our comprehensive range of Domestic and Commercial Gas Training and Assessment, offering both theory and practical training alongside assessments, under the guidance of our Gas Safe Registered engineers.

Please note that training is not a pre-requisite to undertake assessments.

Accredited Certification Scheme:

The Accredited Certification Scheme (ACS) is an industry recognised and mandatory entry route for gas engineers to attain the necessary qualifications and competence required to work under the Gas Safe Register. ACS covers various work categories and requires you to complete an ACS assessment to prove competence in each category. ACS gas courses must be renewed every 5 years to remain a member of the Gas Safe Register. ACS Training and Assessment is available for both initial and re-assessment candidates.

Initial assessment is for:

  • Candidates who are experienced gas-fitting operatives who hold existing ACS qualifications that have been expired for over 12 months or those wishing to extend the range or scope of their qualifications.
  • MLP candidates are new entrants to the industry who have completed an MLP foundation course.

Re-assessment is for:

  • Candidates who currently hold the elements and the expiry date is within 12 months of the proposed re-assessment date.
  • Can be taken up to 6 months prior to the current expiry date and maintain existing dates (just like a car MOT).



  • CCN1 (core domestic gas safety)
  • CENWAT (domestic gas central heating & water heaters)
  • CKR1 (domestic gas cooking appliances)
  • CPA1 (combustion performance analysis)
  • DAH1 (domestic gas ducted air heaters)
  • HTR1 (domestic gas fires & wall heaters)
  • MET1 (domestic gas meters)
  • MET4 (diaphragm gas meters)


  • BMP1 (Gas boosters medium pressure)
  • CDGA1 (commercial direct fired heating appliances)
  • CIGA1 (commercial indirect fired heating appliances)
  • COCN1 (commercial heating core)
  • COCNPI1 LS (limited scope pipe installer core)
  • CoDNC01 (domestic to commercial heating changeover)
  • CORT1 (commercial overhead radiant tube/plaque heaters)
  • ICAE1 LS (limited scope first fix appliance installation)
  • ICPN1 (pipe installation)
  • ICPN1 LS (limited scope pipe installation)
  • TPCP1 (testing & purging volume > 1 m3
  • TPCP1A (testinq & purqinq volume < 1m3


  • CCCN1 (commercial catering core)
  • COCATA1 (changeover from domestic to commercial catering appliances – as per COMCAT 1 & 3)
  • CoDC1 (changeover catering core)
  • COMCAT1 (commercial catering appliances group1)
  • COMCAT3 (commercial catering appliances group 3)


  • CONGLP1 (changeover from natural gas to LPG)
  • CMC (mobile catering units)
  • LAV (leisure accommodation vehicles (e.g. mobile caravans))
  • PD (permanent dwellings)
  • RPH (residential park homes)
  • B (boats)
  • HTRLP2 (closed flue LPG fires)
  • EFJLP1 (electro-fusion jointing of polyethylene pipework)


  • CESP1 (core emergency service providers – natural gas)
  • MET4 (primary diaphragm meters up to 40m3


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