Overview & Technical Profile
Honeywell Solstice® N40 (R-448A) is the world’s most widely adopted low-GWP, non-flammable (ASHRAE A1) replacement for R-404A and R-507 in commercial supermarket refrigeration systems. Formulated with Honeywell’s patented hydrofluoroolefin technology, Solstice N40 provides supermarket operators and cold storage facilities with up to 16% lower energy consumption and a 68% reduction in global warming potential compared to legacy high-GWP refrigerants.
Key Specifications & Thermodynamic Properties
| Composition | Zeotropic HFO/HFC blend (R-32, R-125, R-1234yf, R-134a, R-1234ze) |
| ASHRAE Safety Class | A1 (Non-Flammable, Low Toxicity) |
| Boiling Point | -50.6°F (-45.9°C) |
| Critical Temperature | 182.7°F (83.7°C) |
| GWP | 1273 (68% lower than R-404A) |
| ODP | 0.00 |
| Purity Standard | AHRI Standard 700 Compliant |
Applications & OEM Equipment Compatibility
Engineered for low- and medium-temperature commercial refrigeration, including supermarket centralized multiplex rack systems, standalone display cases, walk-in coolers, blast freezers, and refrigerated transport.
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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