The choice of oil is not arbitrary; it is dictated by the physical properties required by the system design and the chemical compatibility with the circulating refrigerant. This specialized fluid ensures the seamless operation of compressors, facilitates efficient heat transfer, and contributes directly to the energy efficiency and longevity of air conditioning and refrigeration equipment.
Refrigerant Oil Compatibility Chart Reference
Polyolester (POE) Oils: Synthetic ester-based oils designed for high-efficiency systems using alkyl halide refrigerants like R-410A. For retrofits or system conversions, special attention must be paid to flushing procedures to remove incompatible residues before introducing new, compatible oil.
They are generally less expensive but have higher pour points and may not be compatible with the latest low-Global Warming Potential (GWP) refrigerants. Regular maintenance is the only way to ensure the lubricant continues to protect the system.
Refrigerant Oil Compatibility Chart for System Selection and Maintenance
Selecting the wrong grade can result in poor lubrication, sludge formation, or a significant reduction in system efficiency. Polyalkylene Glycol (PAG) Oils: Synthetic polymers used primarily with refrigerants such as R-134a.
More About Refrigerant oil
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