R513A Refrigerant (Low-GWP HFO Blend Replacement for R134a)
R513A is an azeotropic HFO/HFC blend (R1234yf / R134a, 56% / 44%) specifically designed as a low-GWP replacement for R134a in medium-temperature refrigeration and air conditioning. With a Global Warming Potential (GWP) of ~573, it delivers a 56% reduction in GWP compared to R134a (~1430), while offering nearly identical performance characteristics, making it ideal for both new equipment and retrofit projects.
Key Technical Advantages:
Zero ODP and significantly reduced GWP (~573) for regulatory compliance
Similar cooling capacity and efficiency to R134a
Azeotropic formulation ensures minimal glide (<0.5 K) and stable performance
Compatible with existing POE lubricants—no oil change required
Non-flammable (ASHRAE A1 classification) for safe system use
Backward compatible with most R134a system designs
Key Specifications:
| Parameter | Specification |
| Molecular Weight | 108.4 |
| Boiling Point (1atm,°F) | -20.6 |
| Critical Temperature (°F) | 173.7 |
| Critical Pressure (psia) | 546.76 |
| Purity % ≥ | 99.9 |
| Moisture ppm ≤ | Not Available |
| Acidity ppm ≤ | Not Available |
| Vapor Residue ppm ≤ | Not Available |
| Ozone Depletion Potential | 0 |
| Global Warming Potential | 573 |
Industry-Standard Applications:
Commercial refrigeration (medium-temperature systems)
Chillers and air-cooled liquid coolers
Stationary air conditioning systems
Food service equipment (beverage coolers, vending machines)
Retrofit projects replacing R134a
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