R290 vs R32 Pool Heat Pumps: Which Refrigerant Should You Choose?
Compare R290 and R32 refrigerants, Global Warming Potential, heat pump efficiency, safety and the international transition toward lower-GWP technology.
Australia's HFC phase-down and European Union refrigerant regulations are changing the way homeowners and manufacturers evaluate refrigeration technology.
For a new swimming pool heat pump, R290 is worth serious consideration because of its exceptionally low direct refrigerant climate impact.
Is R290 Better Than R32 for Pool Heating?
R290 has a substantially lower Global Warming Potential than R32. This makes R290 attractive for homeowners prioritising low-GWP refrigerant technology when purchasing a new pool heat pump.
However, refrigerant selection alone does not determine energy efficiency.
Compressor design, heat exchanger performance, inverter controls, ambient temperature, water temperature and installation all influence real-world performance.
R290 is classified as A3, meaning higher flammability, while R32 is classified as A2L, meaning lower flammability. Both require equipment designed for their refrigerant and compliant installation.
For Australian homeowners, the best choice is a correctly sized, efficient and appropriately installed heat pump with suitable local support.
R290 vs R32: Key Differences
Both refrigerants are used in modern heat pump systems, but they differ in chemical classification, environmental impact and safety requirements.
| Feature | R290 | R32 |
|---|---|---|
| Refrigerant | Propane | Difluoromethane |
| Category | Hydrocarbon | HFC |
| 100-year GWP | 0.02 | 675 |
| Safety classification | A3 | A2L |
| Flammability | Higher flammability | Lower flammability |
| HFC phase-down | Not an HFC; outside Australia's bulk HFC quota | HFC refrigerant; bulk imports covered by HFC quota |
| Efficiency | Depends on complete system design | Depends on complete system design |
| Installation | Requires R290-compatible equipment and procedures | Requires R32-compatible equipment and procedures |
GWP values use the European Commission's published 100-year methodology under Regulation (EU) 2024/573. Other reporting methodologies may use different R290 values.
Official source: European Commission – Climate-Friendly Alternatives
How Much Lower Is R290's Global Warming Potential?
Global Warming Potential measures the warming impact of a greenhouse gas relative to carbon dioxide over a defined period.
R290 Propane
0.02 100-year Global Warming Potential under the EU methodologyR32 HFC
675 100-year Global Warming Potential under the same EU methodologyUnder these published values, R290 has a dramatically lower direct warming impact per kilogram released.
This comparison relates to direct refrigerant emissions. It does not calculate the complete lifetime environmental footprint of a pool heat pump.
Electricity consumption, refrigerant charge, leakage, manufacturing, servicing and equipment lifespan also matter.
What Does Australia's HFC Phase-Down Mean for Pool Heat Pumps?
Australia's HFC Phase-Down
Australia began reducing bulk hydrofluorocarbon imports on 1 January 2018.
The national program progressively reduces permitted bulk HFC imports through a quota system.
From 2036, Australia's permitted annual bulk HFC imports reach 15% of the defined baseline level.
This represents an 85% reduction from the baseline.
Read the Official Australian Government Policy →The Transition to Low-GWP Alternatives
The Australian Government identifies alternatives including hydrocarbons, carbon dioxide, ammonia and hydrofluoroolefins.
R290 is a hydrocarbon refrigerant rather than an HFC.
Importantly, the current bulk HFC phase-down does not require homeowners to replace existing R32 equipment.
It also does not prohibit all R32 pool heat pumps from being sold in Australia.
Read the Government HFC FAQs →Why This Matters When Buying a New Pool Heat Pump
Australia's refrigerant policy provides a reason to consider low-GWP technology when purchasing new equipment.
Choosing R290 may align with the direction of refrigerant environmental policy, but future product availability and regulatory requirements cannot be guaranteed.
Why Is Europe Moving Towards Lower-GWP Refrigerants?
The European Union has introduced regulations designed to reduce fluorinated greenhouse gas emissions and encourage suitable lower-GWP alternatives.
R290 as a Climate-Friendly Alternative
The European Commission identifies R290 propane as an alternative to certain fluorinated refrigerants, including R32, in specified air-conditioning and heat pump applications.
Its published refrigerant tables identify R290's very low GWP.
This guidance relates to the equipment categories described by the Commission and is not a product-specific endorsement of Orilux.
European Commission Guidance →The European F-Gas Framework
Regulation (EU) 2024/573 establishes controls on fluorinated greenhouse gases, including restrictions for specified equipment categories and refrigerant applications.
Restrictions depend on equipment type, capacity, GWP, dates and applicable safety exceptions.
These are European requirements and should not be represented as Australian legislation.
Read EU Regulation 2024/573 →Does the EU Recommend R290 Pool Heat Pumps?
The European Commission identifies R290 as a climate-friendly refrigerant alternative in certain heat pump and air-conditioning applications.
This supports the broader environmental case for R290 technology. It does not mean the European Commission has specifically recommended a particular Australian swimming pool heat pump.
The Kigali Amendment and the Global HFC Transition
The Kigali Amendment to the Montreal Protocol established international commitments to progressively reduce HFC production and consumption.
Developed countries generally follow an HFC phase-down schedule targeting an 85% reduction by 2036.
Australia's national phase-down began in 2018, ahead of the international developed-country timetable.
This provides international context for why lower-GWP refrigerants are receiving greater attention in refrigeration and heat pump design.
Australian Government – Montreal Protocol and Kigali Amendment →Is an R290 Pool Heat Pump More Efficient Than R32?
Not automatically. Refrigerant type is only one part of heat pump performance.
Compressor Technology
Compressor design, inverter operation and control strategies affect electricity consumption.
Heat Exchanger Design
Effective heat transfer contributes to overall system performance.
Operating Conditions
Air temperature, water temperature, humidity and operating speed affect COP.
What Does COP Mean?
COP stands for Coefficient of Performance.
A COP of 6 means the heat pump delivers approximately 6kW of heating energy for each 1kW of electrical input under the stated conditions.
Compare COP figures at equivalent air temperature, water temperature, humidity and operating mode.
Maximum published COP should not be interpreted as the efficiency achieved in every Australian climate.
Read the Best Pool Heat Pump Australia Guide →Is R290 Safe for Swimming Pool Heat Pumps?
R290 is refrigerant-grade propane and is classified as A3, indicating higher flammability.
R32 is classified as A2L, indicating lower flammability.
Neither refrigerant should be treated as interchangeable with the other.
Heat pumps must be designed, installed and serviced for their specified refrigerant.
- Follow manufacturer installation instructions.
- Observe required safety clearances.
- Ensure appropriate airflow and positioning.
- Use appropriately qualified personnel.
- Follow applicable Australian requirements.
Important Safety Information
R290 equipment must be purpose-designed for hydrocarbon refrigerant use.
Refrigerant circuits should not be modified, converted or serviced by unqualified persons.
Always consult the relevant product manual and installation requirements.
View Avenza Technical Support →What Should Australian Homeowners Consider Before Buying?
Environmental impact matters, but the best pool heating decision should also consider performance, reliability and correct sizing.
1. Refrigerant GWP
Consider the direct climate impact of the refrigerant.
2. Heating Capacity
Size the unit for the pool and climate.
3. Real Efficiency
Compare COP at equivalent conditions.
4. Construction
Assess casing, components and heat exchanger design.
5. Warranty
Review parts, compressor, labour and heat exchanger coverage.
6. Local Support
Confirm dealer access, installation and servicing options.
Explore Orilux R290 Pool Heat Pumps
Avenza Pro distributes Orilux R290 inverter pool heat pumps in Australia.
The range combines low-GWP refrigerant technology with variable-speed heating and model-specific performance features.
Orilux OX16
R290 inverter heating for residential pools.
- 12.5kW
- 16.5kW
- 19.5kW
- Heating and cooling
- Wi-Fi controls
Orilux OX20
R290 inverter technology for higher-capacity applications.
- 18.4kW
- 23.2kW
- 32.7kW
- Up to 120% TurboSilence
- Smart Wi-Fi
Orilux OX26
Premium R290 inverter heating with advanced heat transfer.
- Multiple capacities up to 32kW
- Lightning heat exchanger
- Mitsubishi twin-rotary compressor
- Up to 130% TurboSilence
- Aluminium alloy casing
- Smart Wi-Fi
Product features, capacities and performance vary by model. Consult current specifications and warranty terms.
Why Orilux Uses R290 Refrigerant
Orilux's R290 range reflects a product design approach that combines low-GWP refrigerant technology with modern inverter heating systems.
The OX16, OX20 and OX26 provide different capacities and feature levels for Australian pool heating applications.
The premium OX26 also incorporates Lightning heat exchanger technology, a Mitsubishi twin-rotary compressor and aluminium alloy casing.
These features should be assessed alongside independent sizing requirements and published operating data.
Our Buying Recommendation
When choosing a new pool heat pump, consider:
- Low-GWP refrigerant
- Correct heating capacity
- Realistic COP performance
- Quality construction
- Warranty and support
- Safe, compliant installation
Avenza Pro is the Australian distributor of Orilux. Product recommendations reflect distributor expertise and are not independent rankings of all brands.
Correct Sizing Matters More Than Refrigerant Choice Alone
Even a highly efficient R290 heat pump may struggle to maintain temperature if incorrectly sized.
A pool heating assessment should consider:
Pool Volume
Litres and water mass.
Climate
Ambient temperatures and wind.
Swimming Season
Summer, extended or year-round.
Pool Cover
Evaporation and heat loss.
Does R290 Reduce Pool Heating Running Costs?
R290's low GWP does not automatically mean lower electricity consumption.
Running costs depend on the efficiency of the complete heat pump system, electricity tariffs, local weather and pool heat loss.
Factors Affecting Electricity Use
- Heat pump COP
- Pool size and exposure
- Desired water temperature
- Swimming season
- Pool cover use
- Electricity tariff and solar
How to Improve Efficiency
A correctly sized inverter heat pump combined with a quality pool cover can help reduce unnecessary energy use.
Compare published performance at realistic temperatures.
Explore Pool Heating Running Costs →R290 Pool Heating for Australian Climates
Pool heating requirements differ across Australia. Climate, wind, pool cover use and desired swimming season all influence heat pump sizing.
R290 vs R32 Pool Heat Pump FAQs
Is R290 better than R32?
R290 has a substantially lower Global Warming Potential than R32. However, overall efficiency depends on the complete heat pump design and operating conditions.
What does the Australian Government say about R290?
The Australian Government identifies hydrocarbons among the low- or zero-GWP alternatives available as the country reduces bulk HFC imports. It does not specifically endorse Orilux.
Does the EU recommend R290?
The European Commission identifies R290 as a climate-friendly alternative in certain heat pump and air-conditioning applications. This is not a brand endorsement.
Is R32 being banned in Australia?
Australia's existing bulk HFC phase-down does not constitute a general ban on R32 pool heat pumps. It also does not require consumers to replace existing R32 equipment.
What is the GWP of R290?
Under the EU's current published 100-year methodology, R290 has a GWP of approximately 0.02. Different methodologies may use different values.
What is the GWP of R32?
The European Commission lists R32 with a 100-year GWP of 675 under Regulation (EU) 2024/573.
Is R290 more efficient than R32?
Not necessarily. Compare complete heat pump systems using COP values measured under equivalent conditions.
Is R290 safe for pool heating?
R290 is a higher-flammability refrigerant requiring purpose-designed equipment, correct installation and appropriate servicing procedures.
Does R290 reduce electricity costs?
Refrigerant type alone does not determine running costs. Efficiency, pool heat loss, climate and electricity tariffs all affect costs.
Which Orilux heat pumps use R290?
The Orilux OX16, OX20 and OX26 are R290 inverter pool heat pump ranges distributed by Avenza Pro.
What is the best R290 pool heat pump for Australia?
The best model depends on pool volume, climate, target temperature, swimming season, heat loss and installation requirements. Compare Orilux models using the sizing guide and product specifications.
Sources and Further Reading
The following official sources provide the policy and refrigerant context discussed in this guide.
This article provides general educational information and is not legal, regulatory or installation advice. EU requirements do not automatically apply in Australia. Regulations and product specifications may change.
Ready to Choose an R290 Pool Heat Pump?
Discover the Orilux OX16, OX20 and premium OX26 R290 inverter pool heat pumps.
Avenza Pro can help you explore suitable models and connect with an authorised dealer where available.