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Unvented Hot Water Systems and Safety Course

Update your unvented hot water qualification or become certified for the first time.

This 1-day training course is designed for experienced domestic heating installers and/or plumbers who want to self-certificate under Approved Document G of the Building Regulations, or those looking to join the Microgeneration Certification Scheme (MCS) as a solar thermal installer. 

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At a glance

Cost icon

Course cost

£185.00 exc. VAT

Duration icon

Course duration

1 days


LCL Awards

Course information

This Unvented Hot Water Systems and Safety Course course is aimed at experienced domestic heating installers and/or plumbers who require a qualification in the installation, servicing and maintenance of domestic hot water systems. It is also a prerequisite for those looking to expand into solar thermal installation.

It has been developed to ensure operatives comply with Approved Document G (ADG) 2010 (as updated) when carrying out work on hot water systems and is recognised by Competent Persons Schemes (CPS)

Training includes requirements for the installation of G3 Unvented Hot Water Systems and covers systems up to 500 litres capacity and 45kW power input.

If you are new to the field, assessment is through a multiple-choice question paper, short written response paper and basic practical tasks.

If you are taking this qualification as a re-assessment, you will complete the multiple-choice question paper only.

On completion of the course, you will receive a certificate from LCL Awards. 



To enrol on this course, you must:

  • be experienced in the installation of domestic cold and hot water systems. 
  • hold one recognised competency in a conventional fuel, for example, gas, oil or solid fuel. Or alternatively, for those working in the plumbing sector, an NVQ Level 2 or equivalent qualification or experience. 
  • have a basic knowledge of the WRAS Water (fittings) Regulations and be familiar with Approved Document G of the Building Regulations

Training, assessment, certification and course materials are included in the price. 

Prerequisites icon

The course consists of 1 day in-centre training. 

Successful candidates will receive their LCL Awards certificate approximately four to six weeks following completion of the course.

What's included icon

The course covers both vented and unvented hot water systems training, covering the following topics:

  • Installation and safety.
  • Regulations, standards and guidelines.
  • Theory of hot water expansion.
  • Principles of hot water storage.
  • Design considerations.
  • Components and function.
  • Safety controls, discharge and integration.
  • Maintenance and servicing.
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