H004 - Wet Appliance Installer Course

Duration – 2 Day

The H004 course is suitable for plumbing and heating installers who have already successfully completed the H003 course. This course is important for the safe and effective installation of wet solid fuel appliances.

Course Outcome and Certification: Successful completion of the H004 course allows HETAS registrants to extend their scope of registration with HETAS on the Competent Persons Registration Scheme.

Assessment Method: Theory

Course Content:
  • Wet system design and specification
  • The installation of solid fuel appliances with boilers incorporating vented systems
  • The principle of gravity circulation
  • System controls
  • Integration with other types of wet heating systems
  • Heating system commissioning and handover
  • Service and maintenance
  • Discussions on the advancements in technology


  • HETAS H003 Dry Appliance Installer Course
Plus one of the following:
  • Evidence of Gas Safe Registration: CCN1 and CEN1
  • Evidence of OFTEC 101 or 102
  • Evidence of formal qualifications: City & Guilds 6129/6035 and 6089, or QCF 6189
  • Evidence of equivalent work experience on wet heating systems
  • N/SVQ Level 2/3 in plumbing or equivalent earlier certification that provides evidence of competence
Course fee £460.00 (excl VAT)

Course Dates

For more information and all Windhager course dates please call: 01225 892211 or Email: training(at)windhager.co.uk