Description
R‑1234yf (2,3,3,3-tetrafluoropropene) is a next-gen HFO refrigerant with an exceptionally low GWP (<1) and zero ozone depletion. Adopted globally as a replacement for R‑134a in vehicle ACs, it is favored for its strong environmental performance and comparable cooling efficiency.
Key Features:
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GWP < 1 (lower than CO₂), zero ODP
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A2L (mildly flammable), but manageable in modern system designs
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Near drop-in replacement for R‑134a with minimal modifications
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Compatible with POE lubricants
Specifications:
| Property | Value |
|---|---|
| Formula | C₃H₂F₄ (2,3,3,3‑tetrafluoropropene) |
| GWP | < 1 |
| ODP | 0 |
| Safety Class | A2L (mildly flammable) |
| Typical Applications | Automotive AC, low-GWP chillers |
Applications:
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Automotive air conditioning (nearly all new vehicles in Europe/US since circa 2020)
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Low-GWP commercial chillers and heat pumps
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Retrofit in R‑134a systems with minor adjustments
Usage:
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Use in systems built for A2L refrigerants
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Requires POE oil lubrication
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Ensure proper ventilation and certified handling due to mild flammability
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Follow local regulations on charge limits and servicing tools
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System sensors and controls may require upgrades
FAQs:
Q1. Why is R‑1234yf replacing R‑134a?
Because its GWP is less than 1—over 99% lower than R‑134a—while offering similar performance and environmental compliance.
Q2. Is R‑1234yf safe for automotive use?
Yes. Although mildly flammable, modern AC systems are designed to handle it safely.
Q3. Does it require full system changes from R‑134a?
Only minor changes—like new seals and sensors—are needed, so it’s often treated as a retrofit rather than full redesign.
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