South West Assessment and Training

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Temperature and pressure relief valve on an unvented cylinder

Hot Water Safety (Unvented Hot Water - Part G) training course


The hot water safety training course is designed for those who wish to install vented and unvented domestic hot water storage systems, in line with appropriate Building Regulations and Standards.

Course objectives/key benefits

The course provides the relevant knowledge and understanding required to install, commission or service vented or unvented cylinders (or any other mains water fed appliance) to self-certify their work in accordance with Part G3 of the Building Regulations.

Unvented hot water training and certification is a requirement for any plumber who wants to work on unvented hot water systems. Part G3 of the Building Regulations define unvented hot water systems as a “controlled service”. As such, it is a legal requirement that all unvented hot water installations are notified to the local Building Control department.

PLEASE NOTE: This course can be undertaken 'on-site' at the delegates' premises. Please contact our office on 01579 348544 or for further details.

Who is the course aimed at?

The course is aimed at individuals with a plumbing background or related trade interested in becoming involved in unvented and open-vented hot water systems.

Entry requirements/pre-requisites

The course requires candidates to have a knowledge and understanding of plumbing and heating systems and is ideally suited to existing plumbing engineers who should hold an NVQ in Plumbing at level 3 or equivalent (e.g. City & Guilds Advanced Craft) or who has suitable practical plumbing experience.

Plumbers currently practicing in industry, who do not hold an NVQ (or equivalent) but have suitable experience at this level, can also undertake this course.

Anyone who has previously held an unvented hot water certificate at any time in the past can undertake the Unvented Hot Water reassessment (ASSESSMENT ONLY), if they can provide evidence of this by way of a certificate or their operative's card.

Course content

Course duration

One day

Training Method

Theory and some practical workshop


Practical assessment, multiple-choice and written question papers

Course Outcome/Qualification

Candidates who successfully complete the assessment will receive a certificate of competence from CERT-AIN, the awarding body.

This will enable them to apply to join an appropriate competent persons scheme and self-certify the installation and commissioning of unvented and open-vented hot water cylinders and systems.

Materials Provided

Candidates will be provided with a training pack


Click here to see a list of our course prices

South West Assessment and Training, 1 Quimperle Road, Liskeard, Cornwall, PL14 3US. TEL: 01579 348544. Email:

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