Candidates who enrol onto this course will learn:

Operating principles
HWSS design and installation
HWSS maintenance
See Units covered (below) for a more comprehensive look at what you can expect to learn on this course. Alternatively, if you are looking for a more general plumbing training programme, please visit our main Plumbing Courses page.

Who is this course suitable for?

This course is designed for experienced plumbers and heating engineers who wish to bolster their skills by learning how to install hot water storage systems in accordance with the current Building Regulations. The Unvented G3 Certificate (awarded upon successful completion of this course) is also a requirement for working with solar thermal hot water installations.

If you do not have the experience necessary to pass this course, you may wish to consider one of our entry-level plumbing courses. These programmes will help you to learn the basics of plumbing before helping you to progress onto a more advanced course like this one.


Once you have completed your HWSS course and passed the final assessments, you will receive the Unvented G3 Certificate and an ID card that identifies you as being qualified to install and maintain unvented hot water storage systems in accordance with the relevant regulations.

Units covered

Our hot water storage systems course covers the following areas of study:
Unvented hot water systems and their operating principles
Design and installation of unvented hot water storage systems
Maintenance of unvented hot water storage systems
Meeting the requirements of the Building Regulations
Sealed central heating systems

Progress routes

If you’d like to continue your training after having received your HWSS qualification, why not enrol onto another of Access Training’s leading trade courses? We can help you get trained and qualified in a variety of different fields. Contact us to find out more.

Benefits of training with us

  • Experienced tutors who have worked in their respective trades for many years
  • Fully-equipped training facilities
  • Flexible training courses that allow you to work around other commitments
If you’d like to join our unvented hot water storage systems course, please click here to get in touch with the Access Training team.

Get in touch to learn more about our training courses!