Refrigerant Knowledge Center
What Is R1234yf Refrigerant? Properties, Uses and Safety
R1234yf is an A2L HFO with ultra-low reported GWP, developed primarily for modern mobile air-conditioning systems and requiring equipment, fittings and service practices designed for this refrigerant.
What Is R1234yf?
R1234yf is an A2L HFO with ultra-low reported GWP, developed primarily for modern mobile air-conditioning systems and requiring equipment, fittings and service practices designed for this refrigerant.
R1234yf is classified as single component in the HFO family. Its composition is 100% R1234yf (2,3,3,3-tetrafluoropropene). Refrigerant choice is never based on designation alone: capacity, pressure, lubricant, controls, heat-exchanger behavior, safety standards and local rules all matter.
R1234yf Technical Properties
General reference values for comparison; a current product specification and applicable regulatory basis govern a transaction.
| Refrigerant designation | R1234yf |
|---|---|
| Chemical family | HFO |
| Composition | 100% R1234yf (2,3,3,3-tetrafluoropropene) |
| Blend type | single component |
| ASHRAE safety class | A2L |
| 100-year GWP | 1 (IPCC AR5 100-year, manufacturer-reported) |
| Ozone depletion potential | 0 |
| Normal boiling reference | -29.5 °C |
Common R1234yf Applications
Typical references include mobile air conditioning, and selected new refrigeration equipment.
Use depends on equipment design, operating envelope and applicable local requirements.
Use depends on equipment design, operating envelope and applicable local requirements.
Advantages and Limitations
Selection advantages
- Established refrigerant designation with published reference data.
- Application history in mobile air conditioning.
- ODP reference of 0.
Important limitations
- A2L safety controls must be applied.
- GWP and lifecycle status can affect long-term selection.
- No refrigerant should be treated as a universal drop-in.
Environmental Impact and Regulation
Acceptance and labeling requirements vary by vehicle class, equipment type and market; confirm the applicable mobile-AC rules.
R1234yf has an ODP reference of 0 and a stated GWP of 1 using IPCC AR5 100-year, manufacturer-reported. Regulations commonly distinguish between manufacturing or import, new equipment, servicing, recovered material and individual end uses.
Safety, Handling and Storage
Use dedicated, standards-compliant recovery and charging equipment and follow vehicle or equipment manufacturer procedures for A2L refrigerants.
The A2L classification describes toxicity and flammability groupings; it does not by itself approve a refrigerant for a particular system. Review the current safety data sheet, cylinder label, transport classification, equipment manual and local code.
R1234yf Alternatives and Comparisons
Candidate alternatives must be evaluated as system choices, not simple chemical substitutions.
HFC; A1 safety class; GWP 1430 on the stated IPCC AR4 100-year basis.
HFO/HFC blend; A1 safety class; GWP 573 on the stated IPCC AR5 100-year, manufacturer-reported basis.
Review packaging, documentation and inquiry requirements for R1234yf.
R1234yf Frequently Asked Questions
What is R1234yf made of?
100% R1234yf (2,3,3,3-tetrafluoropropene); it is categorized as single component.
What is the safety class of R1234yf?
The published classification used in this guide is A2L. Equipment approval and local safety rules still apply.
What is the GWP of R1234yf?
The reference here is 1 on the IPCC AR5 100-year, manufacturer-reported basis. Other assessment bases may show a different number.
Can R1234yf replace another refrigerant directly?
No universal drop-in claim is made. Compatibility and conversion requirements must be confirmed for the exact equipment.
Where is R1234yf commonly used?
Typical applications include mobile air conditioning, and selected new refrigeration equipment, subject to equipment design and local approval.
References and Technical Sources
Source data is summarized for general education. Always use current official documents, standards and supplier-specific safety and technical data for engineering or compliance decisions.
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