Overview & Technical Profile
Chemours Opteon™ XL41 (R-454B) is the industry-standard next-generation hydrofluoroolefin (HFO) blend designed as the leading long-term replacement for R-410A in new residential air conditioning, heat pumps, and light commercial direct-expansion (DX) systems. With a Global Warming Potential of only 466, R-454B delivers an impressive 78% reduction in carbon footprint while maintaining near-identical operating pressures, system capacity, and superior energy efficiency compared to legacy refrigerants.
Key Specifications & Thermodynamic Properties
| Chemical Name | Difluoromethane / 2,3,3,3-Tetrafluoropropene Blend (R-32 / R-1234yf) |
| ASHRAE Safety Class | A2L (Lower Flammability, Low Toxicity) |
| Boiling Point | -50.6°F (-50.9°C) |
| Critical Temperature | 170.8°F (77.1°C) |
| Global Warming Potential (GWP) | 466 (78% reduction vs R-410A) |
| Ozone Depletion Potential (ODP) | 0.00 (Non-Ozone Depleting) |
| Purity Standard | AHRI Standard 700 Compliant (>= 99.5% Purity) |
| Cylinder Standard | DOT-39 Approved Factory Sealed Cylinder with Left-Hand Thread |
Applications & OEM Equipment Compatibility
Engineered exclusively for new HVAC installations and OEM equipment factory-optimized for A2L refrigerants (Carrier, Trane, Lennox, York, and Johnson Controls). Ideal for residential split systems, packaged rooftop units, multi-split heat pumps, and chillers. Note: A2L refrigerants must only be installed in equipment specifically certified for mildly flammable refrigerants and are not approved for drop-in retrofit into existing R-410A systems.
EPA Regulatory & Certified Handling Notice
Environmental & Safety Compliance: Under Section 608 and Section 609 of the United States Clean Air Act, all refrigerants must be purchased and handled in compliance with EPA regulations. Technicians must hold active EPA Section 608 certification (Universal, Type II, or Type III) or Section 609 MVAC credentials. Cylinders are manufactured to DOT-39 specifications and must be recovered into certified recovery vessels to prevent atmospheric release.
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