Other Technical Resources


AIRAH has put together a range of technical resources over the years. 


Indoor Air Quality


Indoor Air Quality is a non-mandatory Handbook providing details on applying the NCC indoor air quality (IAQ) Verification Methods. The IAQ Verification Methods are FV4.1 and FV4.2 in NCC Volume One and V2.4.5 in NCC Volume Two. They may be used when developing a Performance Solution.

The Handbook provides background and guidance to use the Verification Methods. It covers the general principles of building ventilation, air contaminants and IAQ. Guidance on design strategies, modelling principles, and sampling and testing are also included.

Download Indoor Air Quality (originally published 2016; updated April 2021).
                   ABCB x AIRAH Indoor Air Quality Handbook




Electricity metering and monitoring guide


This publication has been developed to help NSW businesses adopt energy efficiency initiatives and reduce their energy consumption and costs, while enhancing productivity.

Download the paper.


Flammable refrigerant gases – position paper


The Heads of Workplace Safety Authorities (HWSA) have developed the Flammable refrigerant gases – position paper which provides information on the obligations of work health and safety duty holders with respect to the use of flammable refrigerant gases at workplaces.

Download the paper.


Access hatches safety alert 


This safety alert by theWorkplace Health and Safety Electrical Safety Office Workers' Compensation Regulator highlights the risks associated with removable access hatches.

Read the safety alert.

Flammable Refrigerants Safety Alert 


This safety alert by WorkSafe Victoria concerns Class 2.1 Flammable refrigerant gases (flammable refrigerants) and provides guidance to occupiers of premises on how to control the risk of fire and explosion from refrigeration and air-conditioning systems containing flammable refrigerants.




Servicing Refrigerant Systems 


A number of serious incidents have resulted in workers being severely burnt when a mixture of refrigerant and compressor oil was expelled and ignited while servicing air conditioning refrigerant systems. Safework NSW has prepared this alert, which highlights potential risks associated with the servicing of refrigerant systems.

View the alert.




Seismic Restraint of Engineering Services

The government of South Australia has prepared a document about the seismic design issues in Australia. Despite Australia’s seemingly low seismic risk, it has been subjected to 17 earthquakes registering six or more on the Richter Scale in the last 80 years. 

The aim of this Guidenote is to make designers aware of the:
  • Requirement to restrain engineering services against seismic forces in accordance with Section 8 of AS 1170.4 - 2007
  • Requirement that the seismic bracing of engineering services be documented in detail in the tender drawings and specification on DPTI projects and that the Lead Professional Service Contractor is required to co-ordinate this work across all disciplines
  • Technical information available to assist in designing and detailing the seismic restraint of engineering services.



The use of ventilation and air conditioning in buildings – Part 1: Fire and smoke control in buildings


Updated AS/NZS 1668.1:2015

AIRAH supported the Victorian Building Authority in creating this update. The objective of AS/NZS 1668.1:2015 is “to provide standardized minimum requirements for mechanical air-handling and mechanical smoke control systems for use by designers, installers, inspectors and regulators of these systems”. AIRAH also offers training seminars about 1668.1. 

Download the Victorian Building Authority update.



Fire safety – Kitchen hood exhaust systems


AIRAH has collaborated with a range of AIRAH members, industry organisations and individuals to develop a technical bulletin. The publication aims to highlight the main fire safety issues, promote a common language, and improve understanding of the risks and resulting responsibilities of all participants in the supply chain, from design and installation through to operation and ongoing maintenance.

Download the technical bulletin.


Providing access for maintenance, NATSPEC, 2015

This TECHreport outlines the basic principles of providing access for maintenance, current requirements in Australian legislation and standards, and good practice. It draws together relevant information from a variety of sources that designers and specifiers can pursue for more detail.

Download the Report.


Industrial Refrigeration – Energy Saver Technology Report


The Office of Environment and Heritage has established Energy Saver industrial refrigeration which aims to promote the widespread adoption of cost-effective, commercially proven and energy efficient technologies throughout the industrial refrigeration sector in NSW. 

Energy Saver helps organisations identify the most cost-effective energy efficient industrial refrigeration technology upgrades and provides support for each phase of the implementation process.

Download the Technology Report.

Energy Cut - The 20 Step Guide to Cutting Energy Bills in Your Business


The Energy Cut Guidebook demonstrates how small to medium business owners can reduce their energy use and save money on bills. It offers twenty simple step-by-step instructions - many that can be implemented at little or no cost.

Download the Energy Cut Guidebook.

HVAC Optimisation Guide


The HVAC Optimisation Guide was developed through an industry–government partnership between the NSW Office of Environment and Heritage and AIRAH.

This guide outlines 20 HVAC optimisation strategies and how they can be applied. These strategies can save up to 50 per cent of total HVAC energy use, or up to 80 per cent of energy use in individual HVAC components. 

The guide discusses technical concepts involved in optimising HVAC systems. It is intended to assist all those involved in the running of these systems to plan and manage energy-saving opportunities.

Download the HVAC Optimisation Guide.


Building Simulation Procurement Guidelines


The Building Simulation Procurement Guidelines provide advice for anyone intending to engage a consultant to perform a building simulation. Developers, architects, building owners, facility managers, and managing agents will all benefit from a close perusal of this document.

A fundamental component of sustainable building design, building simulation is a powerful tool in the right hands. Yet a lack of regulation can make securing the services of a competent practitioner harder than it needs to be.

This document is, as its title suggests, intended to provide guidelines around the procurement of building simulation services. 

Download the Building Simulation Procurement Guidelines.

Management guideline for the phase-out of refrigerant R22


This Guide helps building owners, facilities managers, system operators, and technical service providers to all be on the same page and talk the same language when it comes to planning for R22 phase-out.

As well as providing comprehensive background material, the Guide also explains the audit and asset management process and the technical options available.

All stakeholders need to work together to manage this change; the use of this Guide will make that task easier and more manageable.

Download the Management guideline for the phase-out of refrigerant R22.

R32 – Common questions


This document has been prepared by the Air-conditioning and Refrigeration Equipment Manufacturers Association of Australia (AREMA) and the Consumer Electronics Supplier Association (CESA) as a service to the air conditioning industry, the general public and other stakeholders who have an interest in technologies to reduce the environmental impact of air conditioning appliances.

Download R32 – Common questions

HVAC Factsheet: The Importance of Cleaning Coils 2013


This Factsheet by HVAC HESS sets out the benefits of regular coil maintenance and provides guidance on cleaning.

Download the Factsheet.

Flammable Refrigerants Safety Guide 2013


This is an industry guide on managing the health and safety risks associated with the safe design, manufacture, supply, installation, conversion, commissioning, operation, maintenance, decommissioning, dismantling and disposal of refrigeration and air conditioning equipment and systems that use a flammable refrigerant. This industry guide is required because of the increasing demand for flammable refrigerants due to their low-GWP characteristics. Hydrocarbon refrigerants are broadly available in Australia and various flammable synthetic fluorocarbon refrigerants are available, or are expected to be available, in the near future.

This industry guide applies to anyone who has a duty of care in the circumstances described. Like regulations, industry guides deal with particular issues and do not cover all hazards or risks which may arise. The health and safety duties require duty holders to consider all risks associated with work, not only those for which regulations, codes of practice, and industry guides exist.

Download the Flammable Refrigerants Safety Guide. 

Watch the video Introduction to AIRAH's Flammable Refrigerants Safety Guide on YouTube.

Download a copy of the presentation from AIRAH's free seminar series, "How to safely apply flammable refrigerants", facilitated by Kevin Lee, M.AIRAH.

Fact Sheet 1: Designing systems for flammable refrigerants

Fact Sheet 2: Installing systems with flammable refrigerants

Fact Sheet 3: Operating flammable-refrigerant-based systems (Version 2)


Victorian Code of Practice - Ammonia Refrigeration 2011


This Ammonia Refrigeration Code of Practice is the culmination of two years work by a dedicated Ammonia Taskforce including regulatory bodies, fire services, end users, suppliers, design engineers and contractors. Although this code of practice is Victorian based as far as the state regulations go, it can easily be integrated in any state by substituting their state regulations at the beginning of the document. This informative and thorough code of practice covers all Australian Standards. It will also be amended once the AS1677.2 is revised and again when any national regulations are introduced.

The code covers the following topics:

  • Safety requirements for design and modification
  • Hazard identification, risk assessment and controls
  • Emergency planning
  • Maintenance
  • Placarding (identification) signage
  • Personal protective equipment
  • Detection systems
  • Training
  • Auditing

Download the Victorian Code of Practice - Ammonia Refrigeration 2011 below:


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AIRAH Refrigerant Selection Guide 2003



This guide includes information for designers and contractors in the refrigeration and air conditioning industry that assists in judgements on environmental issues and the effect refrigerants and systems can have on the environment.  This document briefly explains the differences between ozone depletion and global warming and the impact these two distinctly different processes have on the environment.

This document covers CFC (chlorofluorocarbon), HCFC (hydrochlorofluorocarbon), HFC (hydrofluorocarbon) and natural refrigerants and their allocated ASHRAE or ISO numbers.  Further alternatives may be included when testing and safety requirements have been addressed in the applicable Australian Standards and Codes.  This guide provides a better understanding of alternative refrigerants and system performance effects resulting from the use of refrigerants that have little or no effect on the ozone layer and a minimal impact on global warming.

Download the AIRAH Refrigerant Guide 2003 below.


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Refrigerant handling code of practice


Australia and New Zealand Refrigerant Handling Code of Practice 2007


The Australia and New Zealand Refrigerant Handling Code of Practice 2007 has replaced the HB40 series of codes of good practice in Table 135 of the Australian Ozone Protection and Synthetic Greenhouse Gas Management Regulations 1995, making compliance with them mandatory for anyone holding a refrigerant handling licence or refrigerant trading authorisation as of January 1, 2008.

The code has been written by AIRAH, with funding from both the Australian and New Zealand Governments, and will apply to all systems which use fluorocarbon refrigerants. It is supplied in two parts.

Part one covers self-contained low charge systems: those systems which don’t require any work on the refrigeration circuit to install, and contain less than two kilograms of fluorocarbon refrigerant.

Part two of the code covers all other stationary and transport refrigeration and air conditioning systems. (Automotive air conditioning systems are covered by a separate code, prepared by the automotive industry).

Download the codes for free by following the links below:




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Natural Refrigerants case studies


Information and case studies for Australian businesses

Much of the refrigeration and air conditioning equipment in Australia uses fluorocarbon refrigerants to facilitate the heat transfer process. Fluorocarbon refrigerants are synthetic chemicals which usually have a high global warming potential, and some still have the potential to cause damage to the ozone layer as well if released to the atmosphere.

Alternatives to these chemicals exist that can help to mitigate some of the environmental risks. Often referred to as ‘natural’ refrigerants because the substances also occur in nature, these alternatives include ammonia, carbon dioxide and hydrocarbons.

These substances have been used as refrigerants for many years, however, they are now finding their way into applications where previously fluorocarbons were the preferred option.

This document has been put together to provide industry decision makers with more information on the potential of ‘natural’ refrigerants. It includes an overview of each of the alternatives, case studies on how they’ve been put to use in Australia, and pointers to some sources of further information.

The case studies are written in plain English, and attempt to give a realistic picture of how alternatives to fluorocarbon refrigerants were used in each case — the advantages they provided, the challenges that needed to be overcome, and the drivers behind each project.

The Natural Refrigerants case studies have been prepared by AIRAH with funding from the Department of Environment and Water Resources.




Download the Natural Refrigerants case studies below: