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The RACO R452A is a lower global warming potential (GWP) refrigerant developed as a replacement for R404A in transport refrigeration applications. It was co-developed by Honeywell and Chemours and is known by the trade names Solstice 452 and Opteon XP44. R452A is a hydrofluoroolefin (HFO) blend designed to deliver comparable performance to R404A while reducing environmental impact. Licensed HVAC-R technicians and refrigeration mechanics handling this refrigerant must follow all applicable EPA Section 608 handling and recovery requirements.
R452A is primarily used in transport refrigeration systems and also sees application in direct expansion (DX) low to medium temperature commercial and industrial refrigeration systems. It serves as a retrofit or new-installation alternative where R404A has traditionally been specified. Technicians evaluating this refrigerant for system conversions should review OEM guidance on compressor oil compatibility and system operating pressures before service.
Designed as a lower GWP replacement for R404A in transport refrigeration and DX low to medium temperature refrigeration systems. Technicians should consult OEM documentation to confirm compressor, expansion valve, and lubricant compatibility before use.
R452A must be handled by EPA Section 608 certified technicians using refrigerant-rated recovery equipment. Power down and lock out the system before opening any refrigerant circuits. Verify lubricant compatibility with the compressor manufacturer prior to charging, as oil requirements may differ from R404A systems. Do not mix refrigerants in a system or recovery cylinder.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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