R32 properties
| Code | R32 |
|---|---|
| Chemical name / composition | Difluoromethane (CH₂F₂) |
| Family | HFC |
| GWP (AR4, 100 years) | 675 |
| ODP | 0 |
| Safety class (ISO 817 / ASHRAE 34) | A2L: lower toxicity, mildly flammable |
| Boiling point (1 atm) | −51.7 °C |
| Temperature glide | None (pure fluid) |
| Charge equal to 5 t CO₂e | 7.4 kg |
| Status | In common use |
Where is R32 used?
- New split and multi-split air conditioners
- Air-to-water heat pumps
- Small VRF and packaged systems
Service and safety notes
- Mildly flammable (A2L). Work away from ignition sources, use A2L-rated vacuum pumps, recovery units and leak detectors, and respect charge limits for the room size (EN 378).
- Never charge a system with a refrigerant other than the one on its nameplate; retrofits need manufacturer approval and oil and component checks.
- Charging, recovery and leak checks must be done and recorded by F-gas certified technicians.
R32 and regulations
Covered by Türkiye's Regulation on Fluorinated Greenhouse Gases (Official Gazette, 15 October 2024). HFC supply is being phased down with quotas, high-GWP gases are restricted earlier, leak-check intervals depend on the CO₂-equivalent charge, and handling requires certified technicians. With a GWP below 750 it is among the preferred next-generation options. Always check the current legal text for exact dates and scope.
Alternatives to R32
- R290: Hydrocarbon (natural), GWP 3, A3
- R454B: HFO/HFC blend, GWP 466, A2L
- R410A: HFC blend, GWP 2,088, A1
Compare all refrigerants in our refrigerant guide.
Other refrigerants
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Frequently asked questions
What is the GWP of R32?
The 100-year global warming potential (AR4) of R32 is about 675.
Is R32 flammable?
A2L: lower toxicity, mildly flammable.
What can replace R32?
Depending on the application: R290, R454B, R410A. Conversions require manufacturer approval and oil and component checks.