R513A properties
| Code | R513A |
|---|---|
| Chemical name / composition | Blend of R1234yf and R134a R1234yf / R134a (56% / 44%) |
| Family | HFO/HFC blend |
| GWP (AR4, 100 years) | 631 |
| ODP | 0 |
| Safety class (ISO 817 / ASHRAE 34) | A1: lower toxicity, non-flammable |
| Boiling point (1 atm) | −29.2 °C |
| Temperature glide | 0.0 K |
| Charge equal to 5 t CO₂e | 7.9 kg |
| Status | In common use |
Where is R513A used?
- Screw and centrifugal chillers
- Medium-temperature commercial refrigeration
- R134a retrofits
Service and safety notes
- Azeotropic blend: negligible glide, but blends are still charged in liquid phase.
- Non-flammable and low toxicity (A1). A large leak in a closed room can still displace oxygen, so gas detection is recommended in small plant rooms.
- 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.
R513A 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 R513A
Compare all refrigerants in our refrigerant guide.
Other refrigerants
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Frequently asked questions
What is the GWP of R513A?
The 100-year global warming potential (AR4) of R513A is about 631.
Is R513A flammable?
A1: lower toxicity, non-flammable.
What can replace R513A?
Depending on the application: R1234ze, R134a, R1234yf. Conversions require manufacturer approval and oil and component checks.