Design domestic gas systems for the installation of appliances or components

Business Sectors (Suites): Down Stream Gas,Downstream Operations
Developed by: Energy & Utility Skills
Approved on: 22 Feb 2017


This standard covers carrying out the design of domestic gas systems for the installation of appliances or components.  This could include the installation of: gas cookers, tumble dryers, leisure appliances, pipework, gas meters and regulators.

To meet this standard you will be able to:

  • complete and present an energy efficient system design
  • design and communicate energy efficient systems to meet client requirements
  • take personal responsibility for your own actions and for the quality and accuracy of the work carried out.
This standard is suitable for a craftsperson or technician working independently in the gas energy supply sector. ​​

Performance criteria

You must be able to:

  1. identify and record the customer's job requirements
  2. compare the customer's job requirements with statutory and industry requirements, identifying any conflicting issues
  3. survey the work site and consult diagrams for any key structural features, damage or defects that could impact on the installation and record them
  4. check and confirm that the proposed siting of the appliance or component meets the manufacturers and relevant industry standards for location, siting and clearance
  5. check that the proposed siting of the gas meter housing for both low and medium pressure meets the manufacturers’ and industry standards requirements for location, siting and clearances, where appropriate
  6. check and confirm that the design is compliant with relevant industry standards
  7. check and confirm the size, location and availability of all input services meet the appliance or component manufacturers and industry standards for the installation
  8. check and confirm the size, location and availability of new or existing systems are suitable for installation of appliances or components, where appropriate​
  9. design a range of energy efficient options to meet the customer and building requirements
  10. present the design options to the customer
  11. agree and confirm the design option with the customer

Knowledge and Understanding

You need to know and understand:

  1. ​the principles of health and safety in the workplace, environmental legislation and relevant regulations in relation to the work to be carried out

  2. how to maintain safe working and environmental practices throughout the duration of the work minimising the risks to self and others

  3. how to carry out a risk assessment, identify hazards and assess risks for the work to be carried out

  4. the organisations reporting lines, authorisation roles and responsibilities

  5. The methods of working which protect the building, customer property, new and existing systems and components ​
  6. how and where to access and interpret the required information to ensure the work is completed to the relevant specification and industry standards

  7. how to measure and record installation and site details for prefabrication purposes

  8. how to confirm that the gas supply, electric supply, chimney system and ventilation requirements are adequate for installation or extension
  9. how to design new and replacement gas systems, installations and components
  10. how to use information technology to produce drawings
  11. the positioning and fixing requirements for systems, appliances and components to comply with manufacturer, industry and relevant regulations
  12. the importance of agreeing and confirming the design option with the customer
  13. the extent of your own responsibility and whom you should report to if you have a problem that you cannot resolve​


input services to include:

  • gas supply
  • electricity supply
  • the chimney suitabliity
  • water supply
  • the provision of ventilation ​

Scope Performance

Scope Knowledge





Links To Other NOS

EUSDSG05 Install and maintain domestic gas cookers, tumble dryers and lei​sure appliances

EUSDSG04 Install and maintain domestic gas space heating appliances​​

EUSDSG3.5 Install gas pipework up to 35mm​

EUSDSG3.12 Install gas meters and regulators (2.5 to 16m3/hour)

EUSDSG3.13 Install gas meters and regulators (2.5 to 1076m3/hour)EUSDSG3.14 Install gas meters and regulators above 1076m3/hour​

External Links

Version Number


Indicative Review Date

30 Mar 2021





Originating Organisation

Energy and Utility Skills

Original URN


Relevant Occupations

Domestic Appliance Service Engineer, Domestic Heating Engineer, Domestic Heating Systems Installer, Domestic Plumber, Gas Appliances Installer, Gas Team Leaders, Craftspersons and Technicians, Gas Engineer

SOC Code


Design, appliances, components, pipework, meters, gas