HFC-R438A Refrigerant (MO29™; Long-Term R22 Retrofit Solution)
HFC-R438A is a non-ozone depleting zeotropic blend specifically developed as a near-drop-in replacement for R22 in existing air conditioning and refrigeration systems. With zero ODP and a moderate GWP of 2,264, it offers a balanced solution for phasing out R22 without major system modifications. Its composition is designed to closely match R22's operating pressure and capacity while maintaining compatibility with both mineral oil and POE lubricants.
Key Technical Advantages:
Excellent pressure and capacity match to R22 (within ±5%)
Unique lubricant compatibility - works with existing mineral oil or POE
Low temperature glide (<7°C) for stable system operation
A1 safety classification (non-flammable) per ASHRAE Standard 34
Reduced discharge temperature extends compressor life
Key Specifications:
| Parameter | Specification |
| Molecular Weight | 99.1 |
| Boiling Point (1atm,°F) | -44.1 |
| Critical Temperature (°F) | 185.5 |
| Critical Pressure (psia) | 623.66 |
| Purity % ≥ | 99.9 |
| Moisture ppm ≤ | 10 |
| Acidity ppm ≤ | 0.1 |
| Vapor Residue ppm ≤ | 50 |
| Ozone Depletion Potential | 0 |
| Global Warming Potential | 2037 |
Industry-Standard Applications:
Direct R22 replacement in AC systems (residential and commercial)
Commercial refrigeration retrofit (supermarkets, cold storage)
Industrial process cooling systems
Heat pumps and chillers
Transport refrigeration units
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