Those within the realm of refrigeration – owners, designers, installers and maintainers work in a dynamic environment.

At a time when awareness of environmental issues is on the rise, the refrigeration sector must constantly examine its equipment and methods. The choices we make are key.

And doubtless, the selection of refrigeration system type and the refrigerant itself have considerable potential impact on the environment.

In Australia the profile of natural refrigerants and their benefits in terms of efficiency and safety continues to rise.

Yet there remain some obstacles to their wholehearted acceptance. By providing information, cases studies and guidance, the AIRAH Refrigeration Special Technical Group (AIRAH NR STG) hopes to lessen the impediments to the wider adoption of natural refrigerants.

It will be a resource for external stakeholders such as government and policy makers to draw upon for reliable and impartial advice. 




The purpose of the AIRAH Refrigeration STG is to provide members with the necessary information and guidance to facilitate the growth and the safe use of natural refrigerants. This includes providing easy-to-understand information, facilitating informed policy and purchasing choices. 




The AIRAH Refrigeration STG aims to:

  • Promote industry best practice in the design and use of natural refrigerants.
  • Provide clear, easy-to-understand case studies concerning natural refrigerant technologies and applications that can be used in Australia. The group aims to develop calculators to assist in the design of natural refrigerant systems.
  • Review current international safety guidelines and design standards with a view to identifying suitable modifications or supplements necessary to existing Australian refrigeration design standards.
  • Organise site visits to and technical seminars on natural refrigerant installations.
  • Review current training courses and training facilities, identifying deficiencies that could be contributing to the slower-than-expected growth of natural refrigerant use.
  • Become an impartial reference point for external policy makers or other stakeholders.




Chair: Jonathan Fryer, M.AIRAH


  • Stefan Jensen, M.AIRAH
  • David Redden, M.AIRAH
  • Julian Hudson, Affil.AIRAH
  • Ben Adamson, F.AIRAH
  • Peter Young, M.AIRAH
  • Ian Tuena, A.M.AIRAH
  • Andrew Pang, A.M.AIRAH
  • Greg Atkinson, M.AIRAH
  • Ross Bradshaw, Affil.AIRAH



Refrigeration STG membership


The committee will comprise a minimum of five members, with a chair elected from the STG membership. Membership is open to any AIRAH member. 



Natural refrigerants case studies


East coast chill factor
Aldi supermarkets in Victoria, New South Wales and Queensland are reducing their greenhouse gas emissions by using R290 hydrocarbon chest freezers in their retail frozen food departments.

Read more


Sirromet Winery Ammonia (NH3) Chiller

The Sirromet Winery, located 40 km south-east of Brisbane, recently upgraded its refrigeration equipment with a new Ammonia chiller plant.

Read more


Supermarket energy and TEWI comparisons

This case study compares five different options of providing refrigeration to a large supermarket of around 4000 m2. The TEWI (Total Equivalent Warming Impact) method of calculation has been used to compare the global warming effect of each of the options.

Read more  


Refrigeration STG contact


If you are interested in being involved please email