Hot Water Systems and Safety (HWSS) Course (Formerly Unvented G3)

Hands-on training for installers.

Intergas’ Hot Water Systems and Safety course (HWSS), formerly known as the G3 unvented course, gives heating engineers and installers the knowledge needed to work safely with unvented hot water systems and achieve their G3 qualification.

  • Learn safe working practices
  • Expert-led practical training
  • Certification upon successful completion
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Hot Water Safety Course (Unvented G3 Details)

Unvented hot water systems must be installed and maintained correctly to ensure safe operation. This course covers the key principles, regulations and best practices, giving installers the knowledge they need to work confidently and meet current industry requirements.

If you install or maintain unvented cylinders, having the right qualification is essential. This G3 unvented course helps you understand current requirements, improve your confidence on site and broaden the range of work you’re qualified to carry out.

During the course, you’ll cover the installation, commissioning, servicing and maintenance of unvented hot water systems, along with the safety devices, regulations and common faults associated with them. The training combines technical guidance with practical examples to help bring the subject to life.

The Hot Water Systems and Safety course is suitable for heating engineers, plumbers and installers who work with unvented hot water systems or want to expand the services they offer. This course is the perfect way to achieve your G3 qualification. 

You’ll need a recognised plumbing or heating qualification, or relevant industry experience, before attending. If applicable, bring any supporting qualifications with you on the day. We’ll send full joining instructions before the course begins.

The Hot Water Systems and Safety (HWSS) course costs £160 + VAT. Led by experienced trainers in a dedicated training facility, it offers a straightforward way to gain or renew your G3 qualification.

Alongside our Hot Water Systems and Safety course, we offer a range of training to help heating engineers develop their skills across both traditional and renewable heating technologies.

Paid Course

Free Courses

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