Air Conditioning Refrigerants: A Guide for Melbourne Homeowners
If you’re in the market for a new air conditioner in Melbourne, understanding refrigerants isn’t just technical jargon, it’s essential information that affects your running costs, environmental impact, and the long-term viability of your investment. With new Australian regulations taking effect from July 1, 2024, the air conditioning landscape has shifted dramatically, and we want to make sure you’re not buying an outdated, inefficient, air conditioning system.
Table of Contents
What Are Air Conditioning Refrigerants?
Air conditioning refrigerants are the chemical substances that flow through your air conditioning system, absorbing heat from inside your home and releasing it outside (or vice versa for heating). Think of them as the lifeblood of your air conditioner. Without them, your system simply wouldn’t work.
For decades, the air conditioning industry has used various refrigerants, but growing environmental concerns have driven significant changes. The refrigerant your air conditioner uses affects:
- Energy efficiency and running costs
- Environmental impact through Global Warming Potential (GWP)
- System performance in Melbourne’s varying climate
- Long-term availability and service costs
- Compliance with Australian regulations
For additional reading, read our post on how refrigerated air conditioning works where we explain the process in further detail.
The 2024 Changes to Australian Legislation
The Australian Government, through the Ozone Protection and Synthetic Greenhouse Gas Management Act 1989, implemented major restrictions on refrigerants from July 1, 2024. These changes are designed to reduce Australia’s greenhouse gas emissions and meet our commitments under the Kigali Amendment to the Montreal Protocol.
Key Regulatory Changes
From July 1, 2024, Australia banned the import and manufacture of small air conditioning equipment containing refrigerants with a Global Warming Potential (GWP) above 750. This ban applies to:
- Outdoor units for single-head split air conditioning systems
- Portable air conditioners
- Window and wall air conditioners
- Systems with a standard refrigerant charge of 2.6 kilograms or less
Importantly, this ban does NOT apply to ducted heating and cooling installations in Melbourne, which gives homeowners more options when choosing whole-home climate control solutions.
Refrigerants Affected by the Ban
The regulations target high-GWP refrigerants including:
- R410A (GWP of 2,088) – Previously the most common refrigerant in split systems
- R134a (GWP of 1,430) – Used in some older systems
Refrigerants Still Permitted
Modern air conditioners can continue to use lower-GWP refrigerants:
- R32 (GWP of 675) – The current industry standard
- R290 (Propane, GWP of less than 5) – A natural refrigerant gaining traction
What This Means for Melbourne Homeowners
If you’re purchasing a new air conditioner, you’ll find that all reputable brands now offer R32 as standard in their split systems. Existing air conditioners using R410A can continue to operate and be serviced. The ban only affects new imports and manufacturing.
Modern Refrigerants: R32 vs R410A vs R290
R32: The New Industry Standard
R32, or difluoromethane, has become the refrigerant of choice for modern air conditioning systems in Australia. Here’s why:
Environmental Benefits:
- GWP of 675 (67% lower than R410A)
- Zero Ozone Depletion Potential (ODP)
- Single-component refrigerant that’s easy to recycle
Performance Advantages:
- Higher energy efficiency compared to R410A
- Superior heat transfer properties
- Requires 10-30% less refrigerant charge than equivalent R410A systems
- Better performance in Melbourne’s extreme temperatures
Safety Classification: R32 is classified as A2L (mildly flammable with low burning velocity). While this sounds concerning, the ‘L’ designation means it has a very low burning velocity and will not propagate horizontally, making it safe when installed by licensed HVAC professionals following Australian Standards.
R410A: The Phasing-Out Refrigerant
R410A was the workhorse of the air conditioning industry for years, but it’s being phased out due to its high GWP.
Key Characteristics:
- GWP of 2,088
- Zero ODP
- Blend of R32 and R125
- Still used in some ducted systems (not affected by the 2024 ban)
Current Status: While R410A is banned for new split system installations, it remains available for servicing existing systems. Some ducted air conditioning systems still use R410A because the 2024 regulations exempt ducted systems from the GWP restrictions.
R290 (Propane): The Natural Alternative
R290 is refrigerant-grade propane, a natural hydrocarbon refrigerant with exceptional environmental credentials.
Environmental Profile:
- GWP of 3 (nearly zero environmental impact)
- Zero ODP
- 40% reduction in refrigerant charge compared to synthetic refrigerants
Current Applications: In Australia, R290 is primarily used in commercial refrigeration, but it’s starting to appear in portable air conditioners and heat pumps. Its A3 classification (highly flammable) requires special handling, equipment, and safety procedures, which currently limits its use in residential air conditioning.
Future Outlook: As safety standards evolve and manufacturers develop safer system designs, R290 may become more common, particularly in smaller split systems and portable units.
What Refrigerants Do Leading Brands Use?
When shopping for an air conditioner in Melbourne, you’ll encounter several trusted brands. Here’s what refrigerants they use in their current model ranges:
Daikin
Split Systems: R32 Ducted Systems: R32
Daikin has been a global leader in the transition to R32, offering free access to 93 patents since 2015 to help other manufacturers adopt this refrigerant. Their Australian-made ducted systems, manufactured in Victoria, all use R32 refrigerant. Models include the Premium Inverter series and Standard Inverter series, with capacities ranging from 5.0kW to 16.0kW in both single and three-phase configurations.
Key Innovation: As the only company that designs both air conditioners and refrigerants, Daikin has optimised their systems for R32’s unique properties, resulting in excellent energy efficiency.
Mitsubishi Electric
Split Systems: R32 Ducted Systems: R32
Mitsubishi Electric’s residential range, including the popular MSZ-AP series wall-mounted splits and PEAM ducted systems, all use R32 refrigerant. Their Mr Slim ducted range includes models from 10kW to 25kW capacity, with options for both single and three-phase power.
Notable Technology: Mitsubishi Electric also offers the innovative City Multi Hybrid VRF system, which uses R32 or R410A between the outdoor unit and Hybrid Branch Controller, but then uses water (instead of refrigerant) between the controller and indoor units. This eliminates refrigerant from occupied spaces, making it ideal for healthcare facilities and other sensitive applications.
Panasonic
Split Systems: R32 Ducted Systems: R32
Panasonic’s complete range, including their Z Series and RZ Series wall-mounted splits, and their NX Series ducted systems, all feature R32 refrigerant. Their ducted range includes the Splittable Ducted PE4 series with capacities from 6.0kW to 22.4kW, designed specifically for Australian conditions.
Australian Focus: Panasonic manufactures their heat exchange fins with Blue Fin technology, which provides superior rust resistance; important for Melbourne’s varied weather conditions.
Fujitsu General
Split Systems: Primarily R32, some older models with R410A Ducted Systems: Both R32 and R410A available
Fujitsu has been transitioning to R32 across most of their domestic appliances. Their Lifestyle Next range, featuring the latest anywAiR® technology, uses R32 refrigerant across all seven models. However, some commercial and high-static ducted models still use R410A.
Transition Status: Fujitsu has indicated they won’t be developing new R410A wall-mounted air conditioners, focusing instead on R32 for future models.
Hisense
Split Systems: R32 Ducted Systems: R32
Hisense’s entire Australian range uses eco-friendly R32 refrigerants. Their product lineup includes the Air Q Series, Energy Pro Series, and Eros Series split systems, plus ducted systems ranging from 8.5kW to 18kW capacity.
Value Position: Hisense offers competitive pricing with R32 technology as standard, making environmentally friendly air conditioning more accessible.
Bonaire
Split Systems: R32 Ducted Systems: R32 and R410A (add-on cooling systems)
As a proudly Australian brand with over 60 years of heritage, Bonaire offers R32 in their Series 3 Hi-Wall split systems and their new Ducted Reverse-Cycle High-Static air conditioners. Bonaire add-on cooling systems are designed to work with existing gas ducted heating using R410A refrigerant (as these are classified differently and not affected by the split system ban).
Australian Heritage: Bonaire products are specifically designed for Australia’s harsh climate conditions, with all models tested for reliability in extreme temperatures.
What About Multi-Split Air Conditioning?
Multi-split systems are classified similarly to single split systems under Australian regulations. The July 2024 ban on high-GWP refrigerants applies to multi-split aircon installations with refrigerant charges under 2.6kg per circuit.
Practically, this means:
- All new multi-split systems sold in Australia use R32 refrigerant
- Systems are designed with refrigerant charges under the 2.6kg threshold
- You won’t find new R410A multi-split systems being imported
- The regulations ensure your multi-split investment is future-proof
What to Look For When Purchasing an Air Conditioner in Melbourne
1. Refrigerant Type and Future-Proofing
Choose a system with R32 refrigerant for these reasons:
- Regulatory Compliance: R32 systems meet current and foreseeable Australian regulations
- Service Availability: As R410A gets phased out, R32 will be more readily available and cost-effective to service
- Energy Efficiency: Lower running costs due to superior thermodynamic properties
- Environmental Responsibility: Significantly lower GWP means less environmental impact
2. Energy Efficiency Ratings
Look for high star ratings on the new climate-zoned energy labels required under the Greenhouse and Energy Minimum Standards (GEMS). Melbourne falls within Climate Zone 6, so ensure you’re comparing ratings relevant to our climate.
3. Licensed Installation
Under the Ozone Protection and Synthetic Greenhouse Gas Management Regulations, only licensed technicians can install, service, or repair air conditioning equipment. All technicians must hold:
- Refrigerant Handling Licence (RHL) – Required to work with refrigerant systems
- Refrigerant Trading Authorisation (RTA) – Required for businesses handling refrigerant
Working with an unlicensed installer not only risks poor installation but also violates Australian law and can void your warranty. At ExtrordinAir, our ARCtick license number is AU29403, issued by the Australian Refrigeration Council.
4. System Sizing and Design
Proper system sizing is critical for both split and ducted systems. An oversized system will:
- Short-cycle, turning on and off too frequently
- Use more energy than necessary
- Fail to properly dehumidify in cooling mode
- Wear components faster
An undersized system will:
- Run constantly without achieving desired temperatures
- Use excessive energy trying to maintain comfort
- Wear out prematurely due to overwork
5. Other Things to Consider for Melbourne’s Climate
Our climate presents unique challenges:
Summer Cooling:
- Systems must handle Melbourne’s extreme heat days (40°C+)
- Look for units rated to operate at high ambient temperatures
- Consider humidity control for muggy summer days
Winter Heating:
- Reverse cycle units must perform down to Melbourne’s coldest mornings (near 0°C)
- Check the heating capacity at low ambient temperatures
- Ensure the system has defrost capabilities
Variable Weather:
- Inverter technology adjusts to rapid temperature changes
- Look for systems with wide operating ranges
- Consider ducted systems with zoning for whole-home comfort
6. Ducted vs Split Systems: Refrigerant Considerations
Split Systems: Must use R32 (or R290) due to the July 2024 regulations. This gives you:
- Latest technology
- Best energy efficiency
- Environmentally friendly operation
- Future-proof investment
Ducted Systems: Not restricted by the 2024 GWP limits, so both R32 and R410A remain available. However, we strongly recommend R32 ducted systems for:
- Consistency with split systems if you have both
- Future-proofing against potential regulation changes
- Better energy efficiency
- Environmental benefits
Why Professional Installation Matters
Refrigerant Handling Requirements
R32’s A2L classification requires specific handling procedures:
- Leak detection assessment before charging
- Correct evacuation procedures to remove moisture and air
- Accurate refrigerant charging (critical for efficiency)
- Testing for leaks post-installation
- Compliance with AS/NZS 5149 standards
- Documentation of all work for warranty purposes
Room Volume Calculations
For split systems using R32, room volume calculations are critical for safety. Unlike R410A systems where a simple 20% calculation applied, R32 systems require the manufacturer to calculate minimum floor areas. This complexity is why professional installation is essential. Your installer must verify the system is appropriate for the specific room.
Flammability Precautions
While R32 is safe when correctly installed, technicians must follow specific protocols:
- No hot work (welding, brazing) on charged systems
- Use of flare connections instead of brazed joints
- Proper ventilation during installation
- Correct electrical work to eliminate ignition sources
- Use of equipment rated for A2L refrigerants
Working with ExtrordinAir: Your Trusted Melbourne HVAC Partner
At ExtrordinAir Heating and Cooling, we’re authorised dealers and installers for all major brands, with extensive experience in both R32 and R410A systems. Here’s what sets us apart:
Licensed and Experienced Technicians
All our technicians hold current Refrigerant Handling Licences and are trained in the latest refrigerant technologies. We stay current with Australian regulations and manufacturer requirements to ensure your system is installed correctly and safely.
Honest Advice for Melbourne Homes
We understand Melbourne’s climate, having installed air conditioners in Melbourne’s inner north west for the last 20+ years.. Whether you’re considering a split system for a bedroom, or ducted air conditioning for whole-home comfort, we’ll assess your needs and recommend systems sized appropriately for your space.
Comprehensive Service
From initial consultation through to installation and ongoing maintenance:
- Free Assessment: We visit your property to understand your requirements
- Honest Recommendations: We’ll suggest suitable systems within your budget
- Professional Installation: Fully licensed installation following all Australian Standards
- System Commissioning: Complete testing to ensure optimal performance
- Warranty Registration: We provide all paperwork for your warranty
- Ongoing Support: Air conditioning service and maintenance to keep your system running efficiently
Brand Partnerships
As dealers for Panasonic, Hisense, Braemar, Brivis, and Bonaire (among others), we can offer unbiased advice on which brand and model suits your specific situation. We’re not tied to a single manufacturer, so we recommend systems based on your needs, not our inventory.
Melbourne Focus
Operating throughout Melbourne’s metro area, we understand local building codes, climate conditions, and the specific challenges Melbourne homes face. From heritage homes in the inner suburbs to modern builds in growth corridors, we’ve seen it all.
Frequently Asked Questions
Can my existing R410A system be converted to R32?
No. R410A systems cannot be retrofitted to use R32. The systems are designed differently, with different pressures, oil types, and safety requirements. If your current system uses R410A, it can continue to operate and be serviced with R410A refrigerant.
Is R32 safe for my family?
Yes, R32 is a safe refrigerant when properly installed by licensed professionals. The A2L classification means it has very low flammability with a slow burning velocity that won’t propagate horizontally. Australian Standards and installation requirements ensure systems are safe for residential use.
Should I choose a split system or ducted system?
Choose a split system if you are cooling or heating one area, or ducted if you prefer whole home comfort. Our post on split system vs ducted air conditioning covers this further.
What’s the difference between single-phase and three-phase ducted systems?
Single-phase power is standard in most Melbourne homes and suits systems up to around 18kW. Three-phase power is common in larger homes and commercial properties and is required for systems above 18-20kW capacity. Three-phase systems often run more efficiently and draw less current per phase.
How much does refrigerant type affect running costs?
R32’s superior thermodynamic properties can reduce energy consumption by up to 10% compared to R410A systems of equivalent capacity.
What happens if my R32 system develops a refrigerant leak?
Licensed technicians must repair the leak and recharge the system. Because R32 is a single-component refrigerant (unlike the blended R410A), it’s easier to recharge without affecting system performance. The refrigerant must be recovered (not vented) and the leak properly repaired before recharging.
Are there any rebates available for energy-efficient air conditioners?
Some Victorian Energy Upgrades (VEU) rebates may be available, particularly when replacing old systems with high-efficiency models. View our post on split system rebates, or contact our friendly team for more information.
