The effective operation of any HVAC or refrigeration system relies not only on the refrigerant but also on the lubricant used within the compressor. For refrigerants like R407C, the choice of lubricant is critical, with polyolester (POE) oils being the industry standard.

POEs were developed to be miscible with HFC refrigerants like R407C, meaning they can dissolve and mix with the refrigerant. This miscibility is crucial for ensuring that the lubricant is carried effectively throughout the system, lubricating the compressor and other moving parts. Unlike older mineral oils, which were miscible with HCFCs like R22, POEs are essential for the proper functioning of HFC-based systems.

The compatibility between R407C and POE oil is a key factor in the reliable performance of air conditioning and refrigeration units that utilize this refrigerant. POE oils offer good thermal stability and lubricity, contributing to the overall efficiency and lifespan of the compressor. When a system is designed for R407C, it is typically manufactured with POE oil, and any servicing or recharging should strictly adhere to this specification.

In cases of system retrofits or major repairs, ensuring the correct lubricant is used is paramount. Introducing the wrong type of oil, or a mixture of oils, can lead to lubrication issues, system damage, and reduced performance. Technicians must be knowledgeable about refrigerant-oil compatibility to prevent such problems. NINGBO INNO PHARMCHEM CO.,LTD. advises that using the correct POE oil with R407C systems is a fundamental aspect of maintaining system integrity and achieving optimal operational results.