Most portable air conditioners use a type of synthetic oil known as Polyolester (POE) oil. POE oil is a synthetic lubricant that is specifically formulated for use in air conditioning and refrigeration systems, including portable AC units. It offers several advantages over traditional mineral oils, making it the preferred choice for modern air conditioning systems.
Some of the benefits of using POE oil include:
Compatibility: POE oil is compatible with the refrigerants commonly used in air conditioning systems, such as R-410A and R-134a. It also works well with the materials used in modern AC compressors and components.
Thermal Stability: POE oil has excellent thermal stability, which means it can withstand the high temperatures and pressures that occur during the operation of an air conditioning system without breaking down or losing its lubricating properties.
Hygroscopic Properties: POE oil has hygroscopic properties, meaning it can absorb moisture. This helps to prevent the formation of acid and sludge, which can be detrimental to the AC system's performance and reliability.
Low Viscosity: POE oil has a lower viscosity compared to traditional mineral oils. This helps improve the compressor's efficiency and reduce energy consumption.
When it comes to portable air conditioners, the type and amount of oil used are usually factory-sealed and do not require regular maintenance or oil changes by the end-users. If you encounter any issues with your portable AC unit, it's best to contact the manufacturer or a qualified technician for service and repair. Attempting to add or change the oil yourself can void the warranty and may lead to damage or inefficiencies in the system.