What type of refrigerant is commonly used in reefers?

The use of refrigerants in refrigeration systems like reefers (refrigerated containers or shipping units) is critical for maintaining the appropriate temperature for perishable goods. While the chosen answer mentions R-134A, a more commonly employed refrigerant for reefers is actually R-404A.

R-404A is a hydrofluorocarbon (HFC) blend that is specifically designed for low-temperature refrigeration applications, such as those found in commercial freezer units and refrigeration systems where maintaining a variety of temperatures is essential. It offers a good balance of performance, efficiency, and low-temperature operation characteristics, making it the preferred choice for many reefer operations.

R-22, although historically used in some refrigeration systems, has been phased out due to its ozone depletion potential. R-134A is mainly used in mobile air conditioning and some domestic refrigeration units, while R-410A is popular in residential and commercial air conditioning systems due to its efficient performance but is not typically used in reefers.

Understanding the cooling requirements and the specific applications of these refrigerants is essential for proper selection in refrigeration systems, particularly in ensuring compliance with environmental regulations and achieving optimal performance in temperature-sensitive operations.