To Importers of Refrigerant: Which Fields Use R404A Gas

R404A is primarily used as a long-term replacement for R-502 and R-22 in commercial and industrial refrigeration systems, especially for low and medium temperature applications. Its thermodynamic properties closely match R-502, and it offers lower compressor discharge temperatures, making it suitable for single-stage compression in low-temperature systems.

Main Application Areas

Commercial Refrigeration
This is the most significant application area for R404A, including supermarket display cabinets, plug-in refrigerated units, vending machines, and ice machines. In commercial condensing units and centralized systems, R404A is also widely used.

Industrial Refrigeration
Used in industrial low-temperature refrigeration systems, cold storage, and food freezing equipment. R404A is applicable across a wide evaporation temperature range (approximately -45°C to 10°C) and is compatible with various compressor types such as reciprocating, scroll, and screw compressors. In industrial settings requiring process cooling or provision room refrigeration, R404A is also the primary choice.

Transport Refrigeration
Used in refrigerated trucks, trailers, and intermodal refrigerated containers.

Key Technical Characteristics

R404A is a non-flammable HFC blend with A1 safety classification and zero ozone depletion potential. Its capacity and efficiency are comparable to R-502, and compressor discharge temperature can be approximately 9°C lower, which helps extend compressor life and improve lubricant stability. When retrofitting R-502 systems, it is typically recommended to use POE (polyol ester) lubricating oil.

Note: Regulatory Trends

As an importer, you need to pay attention to the high GWP (Global Warming Potential) of R404A, which is approximately 3920-3943. The EU F-gas regulation has prohibited the use of HFCs with GWP exceeding 2500 for servicing and maintaining refrigeration equipment since 2020, which directly affects R404A. Although R404A still has market demand in many regions, the trend toward low-GWP alternatives (such as R448A, R449A, R407A/F, etc.) is clear, and you may need to consider related product transitions in your procurement and sales strategies.