R134a properties
| Code | R134a |
|---|---|
| Chemical name / composition | 1,1,1,2-Tetrafluoroethane (CH₂FCF₃) |
| Family | HFC |
| GWP (AR4, 100 years) | 1,430 |
| ODP | 0 |
| Safety class (ISO 817 / ASHRAE 34) | A1: lower toxicity, non-flammable |
| Boiling point (1 atm) | −26.1 °C |
| Temperature glide | None (pure fluid) |
| Charge equal to 5 t CO₂e | 3.50 kg |
| Status | Being phased down |
Where is R134a used?
- Screw and centrifugal chillers
- Medium-temperature commercial refrigeration
- Heat pumps and hot water systems
- Older car air conditioning
Service and safety notes
- 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.
R134a 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. Always check the current legal text for exact dates and scope.
Alternatives to R134a
Compare all refrigerants in our refrigerant guide.
Other refrigerants
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Frequently asked questions
What is the GWP of R134a?
The 100-year global warming potential (AR4) of R134a is about 1,430.
Is R134a flammable?
A1: lower toxicity, non-flammable.
What can replace R134a?
Depending on the application: R513A, R1234ze, R1234yf, R450A. Conversions require manufacturer approval and oil and component checks.