ARCtick Licensing Guide for HVAC Tradies 2026 - Refrigerant Handling Licence Australia

How The Quote Yard Connects Licensed HVAC Contractors with Work

Why ARCtick licensing matters for HVAC job leads

The Quote Yard connects homeowners, strata managers, property managers, facilities managers, and commercial operators who post HVAC and refrigeration work with licensed and qualified contractors in their area. Customers and commercial operators who post HVAC work are increasingly aware of the ARCtick licensing requirement for refrigerant handling work, and strata managers, commercial property managers, and facilities management companies routinely require contractors to provide evidence of current ARCtick REC status before awarding HVAC service contracts. Contractors who hold a current ARCtick REC and register it as part of their professional profile position themselves as compliant and credible practitioners in a market where compliance credentialling is a genuine purchasing criterion. The national HVAC hub where all HVAC leads are aggregated is at HVAC jobs Australia.

Setting up your profile as an ARCtick-licensed HVAC contractor

HVAC contractors who register on The Quote Yard and note their ARCtick REC status, state contractor licence, and any brand authorisations in their profile present a more complete and credible professional picture to customers who post HVAC work and who are evaluating contractor options. In the commercial and strata markets in particular, where clients have the sophistication and the professional incentive to check contractor credentials before engagement, a contractor whose profile clearly lists their ARCtick licence number, state licence details, and relevant certifications is evaluated more favourably than one whose profile provides no credentials. Registering all relevant HVAC service categories, from split system installation and service through to commercial refrigeration and VRF maintenance, ensures that every relevant job posted in your service area reaches you regardless of the specific category of work the customer is posting. State-specific HVAC leads are available by state across the cluster, beginning with HVAC jobs NSW and HVAC jobs VIC.

Notification speed and the value of fast response with credentials ready

Job notifications are delivered by email based on your plan tier. Premium members receive alerts one to two hours after posting, Plus members two to three hours, and Basic, PAYG, and Trial members three to four hours. All posted jobs appear on the dashboard immediately for every member, with all notifications delivered by email only. Commercial clients who post HVAC work that requires ARCtick-licensed contractors, and who check contractor credentials as part of their selection process, are best served by contractors who can respond quickly and confirm their ARCtick REC status and other credentials in their first response. Having your credentials documentation ready to attach to a proposal response, including your ARCtick licence certificate, state contractor licence, and current insurance certificate, gives commercial leads a complete compliance picture immediately rather than requiring a follow-up request that delays the engagement process.

No commission on jobs you win as a licensed HVAC contractor

The Quote Yard charges no commission on completed HVAC jobs anywhere in Australia. After the 6-month free trial, plans start at $35 per month for Basic, $49 per month for Plus, and $99 per month for Premium, with annual billing saving 20 percent. A pay-as-you-go option at $8 per lead is also available. Full plan details are at The Quote Yard pricing for tradies.

The ARCtick Licensing Framework in Australia 2026

The Ozone Protection and Synthetic Greenhouse Gas Management Act 1989

The ARCtick Refrigerant Handling Licence scheme is established and administered under the Ozone Protection and Synthetic Greenhouse Gas Management Act 1989, an Act of the Commonwealth Parliament that implements Australia's obligations under the Montreal Protocol on Substances that Deplete the Ozone Layer and its Kigali Amendment on hydrofluorocarbons. The Act controls the manufacture, import, export, use, and disposal of ozone-depleting substances (ODS) including the now-phased-out HCFC refrigerants and their more ozone-benign HFC successors, as well as synthetic greenhouse gases including the HFCs that make up the majority of refrigerants currently used in Australian HVAC and refrigeration equipment. The Act empowers the Commonwealth to regulate who may handle these substances commercially, and the ARCtick licensing scheme administered by the Australian Refrigeration Council on behalf of the Commonwealth government under a formal arrangement with the Department of Climate Change, Energy, the Environment and Water is the mechanism through which that regulatory authority is applied to individual HVAC and refrigeration trade practitioners. The DCCEEW maintains the regulatory framework and policy settings for Australia's refrigerant management obligations at dcceew.gov.au. Compliance with the ARCtick licensing scheme is therefore not merely an industry best-practice recommendation but a statutory obligation, and operating as an HVAC contractor who handles refrigerants without a current REC is an offence under Commonwealth law that carries significant financial penalties.

The Australian Refrigeration Council and how the ARC administers the scheme

The Australian Refrigeration Council is the industry body that administers the ARCtick licensing scheme on behalf of the Commonwealth government. The ARC issues Refrigerant Handling Licences (REC) to individual trade practitioners who have completed the relevant qualifications, maintains the public register of licensed refrigerant handlers that is accessible to employers, clients, and compliance auditors, processes annual licence renewals, maintains the online refrigerant transaction portal through which REC holders record their refrigerant transactions, issues Refrigerant Trading Authorisations to refrigerant suppliers and distributors, and conducts audits of licensees and licence applicants to ensure the integrity of the licensing scheme. The ARC's administration of the scheme includes setting the application requirements, qualification recognition standards, and fee schedules applicable to REC applications and renewals, and the ARC's decisions on licence applications are subject to review procedures that applicants who believe their application has been incorrectly decided can access. HVAC contractors who have questions about their licence status, application progress, renewal requirements, or record-keeping obligations should direct those enquiries to the ARC directly rather than relying on informal information from industry peers, because the specific requirements can change and the ARC's current guidance is the authoritative reference. The ARC's administrative authority and the policy settings that govern it are set by the DCCEEW at dcceew.gov.au.

Who needs an ARCtick Refrigerant Handling Licence

Any person who carries out any of the following activities in the course of commercial work requires a current ARCtick Refrigerant Handling Licence: purchasing refrigerant from a licensed supplier or RTA holder for use in commercial HVAC or refrigeration work; adding refrigerant to any refrigerating system in the course of installation, commissioning, or service work; recovering refrigerant from any refrigerating system in the course of service, repair, or decommissioning work; and carrying out any other operation that involves the deliberate handling or movement of refrigerant within or between refrigerant circuits. The licence requirement applies regardless of the quantity of refrigerant handled, the type of refrigerant, the size of the system, or whether the work is residential or commercial. A sole trader HVAC mechanic who installs and services residential split systems needs a current REC with exactly the same force as a large commercial refrigeration contractor who manages industrial ammonia systems, because the legal obligation to hold a valid licence applies to the activity of handling refrigerants commercially rather than to any threshold of scale or complexity. The only HVAC-adjacent work that does not require a REC is work that involves no refrigerant handling at all, such as replacing the electrical components of an HVAC system without opening the refrigerant circuit, replacing indoor or outdoor unit fan motors without disturbing the refrigerant circuit, or performing evaporative cooling installation and service where the system contains no refrigerant. The Act and its offence provisions are at dcceew.gov.au.

The HFC phase-down schedule and its effect on the Australian HVAC trade

Australia's implementation of the Kigali Amendment to the Montreal Protocol requires a progressive reduction in the quantity of high global warming potential HFC refrigerants that can be imported into Australia over a defined schedule, with the phase-down expressed in terms of CO2-equivalent tonnes of HFC that can be imported each year relative to the calculated baseline. The practical effect of the HFC phase-down on the Australian HVAC trade is that the supply of high-GWP HFC refrigerants such as R-410A will tighten progressively as the import caps reduce, and the market price of those refrigerants will increase as their supply becomes more constrained relative to the existing installed base of equipment that uses them. New residential split system equipment from all major brands has already transitioned to R-32, which has a GWP approximately 68 percent lower than R-410A, and commercial equipment is moving progressively toward lower-GWP HFO blends and natural refrigerants including CO2 and ammonia as manufacturers redesign their commercial product ranges to comply with the phase-down trajectory. For HVAC contractors who service the large existing stock of R-410A and other high-GWP HFC equipment, the phase-down means that refrigerant costs for servicing those legacy systems will increase over time, and customers who need significant refrigerant top-up or recharge will face higher costs that may accelerate the economic case for whole-system replacement with new lower-GWP equipment. The DCCEEW maintains current information on Australia's HFC phase-down schedule and the refrigerant import quota framework at dcceew.gov.au.

R-32 and A2L refrigerant handling requirements in 2026

R-32 is now the dominant refrigerant in new residential split system and heat pump equipment installed in Australia, and its classification as an A2L mildly flammable refrigerant under the international ASHRAE Standard 34 and AS/NZS ISO 817 safety classification system requires HVAC mechanics who work with R-32 equipment to apply specific handling protocols that differ from those applicable to the non-flammable A1 refrigerants including R-22, R-410A, and R-134a that it has replaced in the residential market. The A2L classification means R-32 has a lower flammability risk than A3 highly flammable refrigerants like propane (R-290) or isobutane (R-600a), but it does have a defined flammability range under specific concentration and ignition energy conditions that requires risk management during service operations where refrigerant could potentially be released. The key practical requirements for working safely with R-32 and other A2L refrigerants include ventilating any enclosed indoor space before and during service operations where the refrigerant circuit is to be opened or where a leak could occur, eliminating ignition sources in the vicinity of refrigerant handling work, using recovery equipment that is rated and approved for mildly flammable A2L refrigerant classes rather than equipment designed only for non-flammable refrigerants, avoiding the use of open flame brazing techniques near or on components that contain R-32 without first fully recovering the refrigerant and purging the circuit, and ensuring that any hot work near an R-32 system is preceded by a combustible gas check in the work area. The Australian Standards applicable to refrigerant safety classification and handling are maintained by Standards Australia at standards.org.au.

The ARC portal and refrigerant transaction record-keeping

The ARC's online portal is the system through which REC holders record all their refrigerant transactions, renew their annual licence, and access their transaction history and compliance records. Every REC holder is required to maintain a portal account and to use it to record every refrigerant transaction they carry out in the course of their commercial work. The transaction records required include the date of the transaction, the refrigerant type, the quantity in kilograms, the purpose of the transaction (purchase, addition to system, recovery from system, transfer between cylinders, or dispatch to reclaim), and the system or job reference where applicable for addition and recovery transactions. Transactions must be recorded promptly after they occur, and accumulating unrecorded transactions creates a compliance risk that is independent of the ARCtick licence status itself. The ARC conducts audits of transaction records on a risk-based basis and can request supporting documentation for any recorded transaction, including purchase invoices for refrigerant purchases and job records for system additions and recoveries. HVAC contractors who are new to the ARC portal should complete their initial portal setup promptly after receiving their REC, and should practise logging a test transaction to confirm they understand the portal's operation before they carry out their first commercial refrigerant transaction. The ARC website provides portal user guidance and support contacts for technical issues with the portal system. Further regulatory guidance is at dcceew.gov.au.

Common ARCtick Compliance Pitfalls and How to Avoid Them

Allowing your REC to lapse while actively working

The most common and most avoidable ARCtick compliance issue among active HVAC contractors is allowing the annual REC to lapse through oversight of the renewal deadline, and then continuing to carry out refrigerant handling work during the gap between the expiry date and the eventual renewal. The ARCtick REC must be renewed annually, and the ARC sends renewal reminders to the email address associated with the portal account before the expiry date, but if that email address is not current or the reminder is overlooked, the expiry occurs without the contractor's awareness. Carrying out refrigerant handling work with an expired REC is an offence under the Ozone Protection and Synthetic Greenhouse Gas Management Act 1989 regardless of whether the contractor was aware their licence had lapsed, and the ARC's public register reflects the current licence status so any client or compliance auditor who checks the register during the lapse period will see an expired licence. The practical solution is to set a calendar reminder for the REC renewal date sixty to ninety days before the actual expiry, allowing ample time to log into the portal, pay the renewal fee, and confirm the renewal before the expiry date. SafeWork Australia provides WHS compliance context at safeworkaustralia.gov.au.

Incomplete or inaccurate refrigerant transaction records

Incomplete, inaccurate, or missing refrigerant transaction records are a significant compliance risk for HVAC contractors who handle refrigerants at high volume, because the cumulative effect of recording imprecise quantities, forgetting to record small top-up transactions, or deferring batch entry of multiple transactions creates a transaction record that does not accurately reflect the contractor's actual refrigerant handling history. The ARC audit process for transaction records involves comparing the recorded transaction quantities with supporting documentation including purchase invoices and job records, and discrepancies between recorded and documented quantities trigger further investigation that can result in compliance action even where the underlying refrigerant handling was conducted in accordance with the licence conditions. HVAC contractors who carry out multiple service visits per day and handle refrigerant across several of those visits are at the highest risk of record-keeping lapses, because the pace of a busy service day creates pressure to defer portal logging to the end of the day or the end of the week, by which point specific quantities and job references may be less clearly recalled. Establishing a discipline of recording each refrigerant transaction in the ARC portal at the completion of each job, or at minimum at the end of each working day, avoids the accumulation of imprecisely remembered transactions and produces a clean and auditable record.

Purchasing refrigerant without a current valid REC

Purchasing refrigerant from a licensed supplier without a current valid ARCtick REC is an offence for both the purchaser and potentially for the supplier if the supplier failed to take reasonable steps to verify the purchaser's REC status before completing the sale. Licensed refrigerant suppliers and RTA holders are required to check the ARC public register to verify that the purchaser holds a current REC before completing each refrigerant sale, and suppliers who sell to a person without a valid REC are exposed to compliance risk from the ARC. HVAC contractors whose REC has lapsed and who attempt to purchase refrigerant on the basis of a lapsed licence number risk the supplier checking the register and declining the sale, in addition to the compliance risk associated with the attempted unlicensed purchase. HVAC apprentices and trainees who work under the supervision of a licensed contractor need to ensure that the refrigerant they handle at work is purchased by and handled under the authority of the supervising licensed contractor's REC, and that their own unlicensed handling of refrigerant in an unsupervised context would constitute an unlicensed handling offence. The regulatory framework for refrigerant purchasing is at dcceew.gov.au.

Venting refrigerant to atmosphere

Venting refrigerant to atmosphere, whether deliberately to save time during a system decommission or service or inadvertently through inadequate recovery procedures, is an offence under the Ozone Protection and Synthetic Greenhouse Gas Management Act 1989 regardless of the quantity vented or the refrigerant type. There is no minimum quantity threshold below which venting becomes permissible, and the offence applies to all refrigerants covered by the Act including HFCs, HCFCs, CFCs, and synthetic greenhouse gases. Every refrigerant that is removed from a system's refrigerant circuit must be recovered into an approved recovery cylinder rather than released to atmosphere. HVAC contractors who are decommissioning old systems, including systems containing legacy refrigerants like R-22 or even the very old CFC refrigerants that may still be present in some very old systems, are required to recover those refrigerants and send them to a licensed reclaim or destruction facility rather than venting them. The environmental enforcement of the venting prohibition under the Act is the responsibility of the DCCEEW and its authorised officers, and penalties for intentional or negligent venting can be substantial. Standards for refrigerant recovery equipment are at standards.org.au.

Working without supervision as an unqualified person

HVAC apprentices and trainees who are working toward their Certificate III qualification but have not yet completed the refrigerant handling competency units and obtained their ARCtick REC may carry out refrigerant handling work only under the direct and on-site supervision of a fully licensed REC holder. The supervision requirement is not satisfied by a licensed supervisor who is at a different job site, is available by phone, or who has directed the apprentice to carry out refrigerant work without being physically present during that work. A licensed supervisor who has an apprentice carry out refrigerant handling unsupervised is putting both the apprentice and themselves at compliance risk, because the licensed supervisor's REC does not authorise another person to handle refrigerants in their absence. The practical application of this rule in a busy HVAC business is that apprentices and trainees can assist with all aspects of HVAC installation and service that do not involve direct refrigerant handling without their REC, but any refrigerant connection, disconnection, recovery, or addition operation must be performed by or directly supervised by the licensed REC holder. WorkSafe and SafeWork obligations for apprentices working in the HVAC trade are at safeworkaustralia.gov.au.

How to Get Your ARCtick Refrigerant Handling Licence

Step 1 - Complete a Certificate III in Air Conditioning and Refrigeration

The qualification pathway to an ARCtick Refrigerant Handling Licence begins with completing a Certificate III in Air Conditioning and Refrigeration (UEE32220 or the current equivalent) from a registered training organisation. This qualification is a nationally recognised vocational qualification that provides the technical foundation for working as an HVAC mechanic or refrigeration technician, covering refrigerant handling competency units, refrigeration system theory, electrical fundamentals applicable to HVAC work, installation techniques, fault diagnosis, and the safety and compliance knowledge required for professional practice. The Certificate III is typically completed through a combination of structured classroom or online training and on-the-job practical training in an employer's HVAC business, and the duration of the qualification varies between TAFE providers and private RTOs. In most states, the Certificate III is completed as part of an HVAC apprenticeship program, typically running three to four years, although school-based apprenticeships and mature-age traineeships offer alternative pathways for people entering the trade from outside the traditional school-leaver apprenticeship route. The specific units within the Certificate III that cover refrigerant handling competencies are the units that the ARC requires as evidence of qualification for the REC application, and the RTO that issues the Certificate III or Statement of Attainment will provide the unit completion evidence needed for the ARC application.

Step 2 - Apply to the ARC for your Refrigerant Handling Licence

Once the relevant refrigerant handling competency units from the Certificate III have been completed, the applicant applies to the Australian Refrigeration Council for their Refrigerant Handling Licence through the ARC's online application portal. The application requires the submission of evidence of the completed qualification, specifically the Certificate III completion certificate or a Statement of Attainment covering the required refrigerant handling competency units, along with the applicant's personal identification details, contact information, and the applicable licence application fee. The ARC processes applications within a defined timeframe after receiving a complete application, and the applicant will be notified of the outcome. A successful application results in the issue of the REC, the creation of the applicant's ARC portal account for refrigerant transaction recording, and the addition of the new licence holder to the ARC public register. Applications that are missing required documentation are returned to the applicant for completion rather than approved with conditions, and it is the applicant's responsibility to ensure their application is complete before submission to avoid processing delays. The ARC's website provides the current application requirements, the application form, the fee schedule, and guidance on the documentation required for first-time licence applications.

Step 3 - Set up your ARC portal account and understand record-keeping

After receiving the REC, the new licence holder needs to set up and familiarise themselves with the ARC's online refrigerant transaction portal, which is the system through which all refrigerant transactions must be recorded. The portal requires the licence holder to create or confirm their account, set up their profile with current contact details and the licence number, and understand the transaction entry process for each of the transaction types they will carry out in their work. The ARC provides user guidance documentation and in some cases tutorial videos on how to use the portal, and new REC holders should invest the time to understand the portal before they carry out their first commercial refrigerant transaction rather than attempting to learn the system under the time pressure of a busy installation day. Setting up the email notifications from the portal to go to a current and actively monitored email address ensures that ARC communications about licence renewals, portal system updates, and compliance notifications are received and acted upon promptly. The portal account also provides access to the licence holder's transaction history, which is useful for self-auditing the accuracy and completeness of the record-keeping. The DCCEEW framework governing the portal obligation is at dcceew.gov.au.

Step 4 - Renew your REC annually and maintain active compliance

The ARCtick REC requires annual renewal through the ARC portal, and setting a renewal reminder in advance of the expiry date is the most reliable way to ensure continuous licence validity without gaps. The renewal process through the portal involves logging in, confirming current details, paying the renewal fee, and receiving confirmation of the renewed licence. HVAC contractors who allow their REC to lapse because they did not notice the renewal deadline, or who deliberately do not renew because they believe their current work does not involve refrigerant handling and then find themselves handling refrigerant on an ad hoc basis without a current licence, are creating a compliance risk that is easily avoided by maintaining the annual renewal as a fixed business calendar event. The ARC sends renewal reminders to the email address registered in the portal, and keeping that email address current and actively monitored ensures those reminders are received in time to act on them. REC holders who are experiencing financial difficulty and are considering not renewing should contact the ARC to discuss their situation rather than simply allowing the licence to lapse, as carrying out refrigerant handling with a lapsed licence to avoid the renewal cost creates a far more serious and costly compliance problem than the renewal fee itself. All licence renewal information is managed through the ARC, and current requirements are at dcceew.gov.au.

ARCtick and State Licensing: Understanding the Combined Requirements

ARCtick as the national baseline plus state-specific requirements

The ARCtick REC is a Commonwealth requirement that applies uniformly across every Australian state and territory, and it is the baseline licensing requirement for refrigerant handling work without which no other state licence or registration makes the refrigerant handling legal. However, the ARCtick REC is only one component of the combined licensing requirements for operating as an HVAC contractor in any Australian state, and the state-specific contractor or building services licence is the separate and additional requirement that authorises the building installation work associated with HVAC installation above the applicable contract value threshold. Understanding the difference between the ARCtick REC, which authorises refrigerant handling, and the state contractor licence, which authorises the building installation work, is important because the two are independent requirements that must both be held to legally carry out most HVAC installation jobs. A contractor who holds a current ARCtick REC but not the required state contractor licence is licensed to handle refrigerants but not to carry out the installation work, and vice versa. More on NSW-specific requirements is at HVAC jobs NSW.

New South Wales: Fair Trading contractor licence alongside the ARCtick REC

In New South Wales, the ARCtick REC must be held alongside a NSW Fair Trading contractor licence in the Air Conditioning and Refrigeration category for HVAC installation work above the $5,000 contract value threshold under the Home Building Act 1989. The ARCtick REC authorises the refrigerant handling component of the work, while the NSW Fair Trading contractor licence authorises the building installation component. NSW HVAC contractors who hold an ARCtick REC but do not hold the NSW contractor licence are not authorised to carry out contract installation work above the threshold, and those who hold the NSW contractor licence but not the ARCtick REC are authorised for the installation work but cannot legally handle refrigerants in the course of that installation. NSW electrical connection work also requires a NSW Fair Trading electrical licence. Guidance on NSW HVAC licensing requirements is at safework.nsw.gov.au for WHS matters, and Fair Trading NSW for licence enquiries. Further NSW HVAC information is at HVAC jobs NSW.

Victoria: BPC Heating and Cooling registration alongside the ARCtick REC

In Victoria, HVAC installation work requires BPC plumbing practitioner registration in the Heating and Cooling class under the Plumbing Industry Commission Act 2002, administered by the Building and Plumbing Commission, in addition to the ARCtick REC for refrigerant handling and an Energy Safe Victoria electrical licence for electrical connection work. The BPC registration is a distinctly Victorian requirement that classifies HVAC installation as plumbing work, and HVAC contractors from other states who work in Victoria need to confirm their BPC registration status before carrying out any Victorian installation work. Gas fitting work associated with gas heating system replacement projects requires separate BPC Gas Fitting registration in addition to the Heating and Cooling registration. The BPC at vba.vic.gov.au administers the registration requirements for Victorian HVAC installation work. More VIC HVAC information is at HVAC jobs VIC.

Queensland: QBCC RACMS licence alongside the ARCtick REC

In Queensland, the ARCtick REC must be held alongside a QBCC licence in the Refrigeration and Air Conditioning Mechanical Services (RACMS) category, issued by the Queensland Building and Construction Commission under the QBCC Act, for HVAC installation and service work. The QBCC RACMS licence has specific financial requirements including minimum net tangible assets that must be demonstrated at application and renewal, and QBCC Home Warranty Insurance is required for eligible residential work above the applicable threshold. The Electrical Safety Office, under Queensland's Electrical Safety Act 2002, issues the separate electrical worker or contractor licence required for electrical connection work. The QBCC at qbcc.qld.gov.au administers the RACMS licence, and WorkSafe Queensland at worksafe.qld.gov.au governs WHS obligations for QLD HVAC work. More QLD HVAC information is at HVAC jobs QLD.

Western Australia and South Australia state licensing requirements

Western Australia requires Building Commission WA registration under the Building Services (Registration) Act 2011 for HVAC mechanical services installation work, administered through the Department of Commerce, alongside the ARCtick REC for refrigerant handling and an Electrical Licensing Board WA electrical licence for electrical connection work. South Australia requires a CBS SA building work contractor licence under the Building Work Contractors Act 1995, administered by Consumer and Business Services SA, alongside the ARCtick REC and a CBS SA electrical licence for electrical connection. Both states require a plumbing licence for the water connection components of evaporative cooling and heat pump hot water installations. The Building Commission WA and CBS SA requirements are independent of and in addition to the ARCtick REC, and contractors working in WA or SA need to hold all applicable licences and registrations before commencing work in those states. WA HVAC information is at HVAC jobs WA, and SA information is at HVAC jobs SA.

Technical Reference: Refrigerants, Safety Classifications, and the Australian Standards

Refrigerant safety classifications and what they mean for handling

Refrigerants are classified according to their safety properties under the international ASHRAE Standard 34 system, which is adopted in Australia as AS/NZS ISO 817. The classification system uses a letter-number code where the letter describes the toxicity class (A for lower toxicity, B for higher toxicity) and the number describes the flammability class (1 for non-flammable, 2L for mildly flammable with a burning velocity threshold, 2 for flammable, 3 for highly flammable). The most common residential refrigerants in Australian HVAC equipment in 2026 are R-32 (classified A2L, lower toxicity and mildly flammable), R-410A (classified A1, lower toxicity and non-flammable, now being phased out in new equipment), R-134a (classified A1, lower toxicity and non-flammable, used in some heat pump applications), and R-744 (CO2, classified A1, lower toxicity and non-flammable, used in Sanden and Reclaim Energy heat pump hot water systems). Commercial refrigeration adds R-22 (classified A1, still present in some very old legacy systems), HFO blends including R-454B and R-452B (classified A2L, being introduced as R-410A replacements in commercial equipment), CO2 transcritical (A1), and ammonia or R-717 (classified B2L, higher toxicity and mildly flammable, used in large industrial applications). The safety classification determines the handling protocols required for each refrigerant, with A2L refrigerants requiring the specific handling protocols described earlier in this guide and B2L refrigerants requiring additional protocols for toxic exposure prevention. Standards Australia maintains the current AS/NZS ISO 817 standard at standards.org.au.

Australian Standards applicable to refrigerant handling and HVAC installation

The primary Australian Standard governing the safety of refrigerating systems and the requirements for refrigerant handling in HVAC installation and service is AS/NZS 1677, which covers the design, manufacture, installation, and operation of refrigerating systems including the refrigerant pipework standards, pressure testing requirements, leak detection obligations, and system documentation standards directly relevant to HVAC installation and commissioning work. The companion standard AS/NZS 3000, the Wiring Rules, governs the electrical aspects of HVAC installation including dedicated circuit requirements, circuit protection, earthing, and the specific wiring provisions for fixed air conditioning equipment. AS 1668.2 covers mechanical ventilation in buildings and is relevant to HVAC system design and installation where the system interfaces with or forms part of the building's mechanical ventilation infrastructure. For heat pump hot water systems, AS/NZS 4755 specifies the performance and installation requirements applicable to heat pump water heaters. The AS 4254 series covers ductwork for air-handling systems and provides the design and installation standards applicable to HVAC ductwork installation. Together these standards form the technical compliance framework within which licensed HVAC contractors carry out their work, and a working familiarity with the standards applicable to the scope of work the contractor routinely carries out is part of the professional knowledge expected of a licensed HVAC practitioner. Standards Australia at standards.org.au maintains the complete catalogue of current Australian Standards applicable to HVAC work. The NCC energy efficiency requirements for commercial HVAC are at abcb.gov.au.

Refrigerant recovery equipment and its use in practice

Refrigerant recovery equipment, consisting of a recovery machine, recovery cylinder, and the connecting hoses and fittings that allow refrigerant to be transferred from a system's refrigerant circuit into a recovery cylinder under controlled conditions, is essential equipment for every HVAC mechanic who services refrigerant-containing systems. The recovery machine must be rated for the type of refrigerant being recovered, and equipment designed only for non-flammable A1 refrigerants is not suitable for recovering A2L mildly flammable refrigerants without specific confirmation from the equipment manufacturer that it is appropriate for that use. Recovery cylinders must be DOT or SAA-approved pressure vessels rated for the maximum working pressure of the refrigerant being recovered, and must be correctly labelled with the refrigerant type and the cylinder's tare weight and maximum fill weight so the recovery process can be stopped before the cylinder is overfilled. The recovery cylinder must never be filled beyond 80 percent of its water capacity by weight, because liquid refrigerant expands with temperature increase and an overfilled cylinder can become hydraulically locked with potential for catastrophic failure if exposed to heat. HVAC contractors who use recovery equipment regularly should ensure it is serviced in accordance with the manufacturer's schedule, because a recovery machine with worn valve seats, a faulty compressor, or contaminated oil will be slow and inefficient and may not achieve the deep vacuum needed to confirm that the refrigerant circuit has been fully evacuated before repair work begins. The Australian Standards for pressure vessels and refrigerant recovery equipment are maintained at standards.org.au.