Top Eco-Friendly Air Conditioning Refrigerants Explained
Choosing a more environmentally responsible air conditioner involves more than checking its electricity consumption. The refrigerant inside also matters. For Buderim homes, the best choice balances low climate impact, energy efficiency, safety and local servicing support.
In 2026, R32 remains a common option for new residential split systems in Australia, while refrigerants with even lower climate impacts are becoming available in selected equipment. Here is what the main options mean for your next installation or replacement.
What Makes a Refrigerant Eco-Friendly?
Two important measures are ozone depletion potential and global warming potential, or GWP. Modern refrigerants generally avoid ozone damage, but their contribution to climate change varies considerably.
A lower GWP means less warming impact if refrigerant escapes. However, electricity consumption also affects an air conditioner’s environmental footprint. A correctly sized, efficient system with a slightly https://airconditioningbuderim.com.au/about/ higher-GWP refrigerant can be a better practical choice than unsuitable equipment selected solely for its refrigerant.
The approximate GWP figures below use commonly quoted 100-year values. Figures can vary depending on the scientific assessment used.
Leading Lower-Impact Refrigerants Explained
R32: A Practical Choice for Many Buderim Homes
R32 is widely used in modern residential split-system air conditioners. Its commonly quoted GWP is approximately 675, compared with about 2,088 for R410A. Both have zero ozone depletion potential.
R32 equipment can deliver strong energy efficiency and is widely supported by Australian installers. However, R32 is still a greenhouse gas and is classified as mildly flammable, so installation must follow the manufacturer’s requirements and applicable safety standards.
For many Buderim households replacing an older split system, a high-efficiency R32 model is a readily available lower-impact option.
R290: Very Low GWP, With Important Safety Requirements
R290, also known as propane, has a very low GWP, commonly quoted as approximately 3, and does not deplete the ozone layer. It is used in equipment including some portable air conditioners and heat pumps.
Its main limitation is its high flammability. Equipment must be specifically designed for R290, with appropriate charge limits, installation conditions and servicing procedures. Availability in Australian residential air conditioning varies, so check whether a proposed product suits your property and has reliable local support.
R290 must never be substituted into an air conditioner designed for R32 or R410A.
HFO-Based Blends: Lower-GWP Options in Selected Systems
Refrigerants such as R454B combine hydrofluoroolefins, or HFOs, with other refrigerants to reduce climate impact. R454B has a commonly quoted GWP of around 466 and is used in some newer air-conditioning equipment internationally.
These refrigerants are not interchangeable with existing refrigerants. Australian product availability, installation requirements and service support should be checked before choosing a system. Many lower-GWP blends are mildly flammable and require compatible equipment and trained technicians.
R744: Useful, but Not Usually a Home Split-System Option
R744 is carbon dioxide, with a GWP of 1. It is used in applications such as commercial refrigeration and some hot-water heat pumps. Its high operating pressures require specialised equipment, and it is not a typical refrigerant choice for residential split-system cooling in Buderim.
What About Existing R410A and R22 Systems?
R410A does not damage the ozone layer, but its relatively high GWP makes leak prevention particularly important. R22 both depletes ozone and contributes to global warming. Australia no longer permits imports of new R22, although recovered or reclaimed supplies may be available for servicing.
An operating older air conditioner does not automatically need immediate replacement. Ask a technician to assess its condition, electricity consumption, refrigerant availability and repair costs before deciding.
How to Choose an Air Conditioner in Buderim
- Compare seasonal efficiency: Use the Australian Zoned Energy Rating Label and compare performance for the relevant climate zone.
- Get a proper sizing assessment: Buderim’s humid summers make suitable cooling capacity and moisture removal important.
- Check servicing support: Confirm that local technicians can maintain the model and source its refrigerant and parts.
- Use qualified installers: Work involving fluorocarbon refrigerants requires appropriate Australian Refrigeration Council licensing and authorisation.
- Prevent avoidable emissions: Keep filters clean, arrange maintenance as recommended and have suspected refrigerant leaks investigated rather than repeatedly topped up.
Australia’s Refrigerant Transition in 2026
Australia continues its HFC phase-down, progressively reducing imports of high-global-warming-potential refrigerants. This is not a blanket ban on using existing HFC equipment. From 2027 onward, product ranges will continue evolving, so confirm current availability and compliance when requesting quotes.
The best choice is a low-impact refrigerant in an efficient, correctly installed system. For a Buderim property, ask your air-conditioning provider to explain the refrigerant, energy rating, safety requirements and ongoing service costs before you commit.
Buderim Air Conditioning
Unit 2/106 Burnett St, Buderim QLD 4556
(07) 4158 3332