REFRIGERANT GAS EURO R‑404A

Euro Refrigerant R-404A is a widely used HFC blend composed of R-125, R-143a, and R-134a, engineered to provide reliable cooling performance in commercial and industrial refrigeration applications. It was developed as a long-term replacement for R-502 and R-22 in low- and medium-temperature systems, offering similar performance characteristics with the benefit of zero ozone depletion potential (ODP = 0).

Renowned for its excellent cooling capacity, energy efficiency, and operational stability, Euro R-404A has been the global industry standard for many years in supermarkets, transport refrigeration, cold storage, and food processing facilities. Classified under ASHRAE safety class A1 (non-flammable and low toxicity), it is safe to handle when industry-standard practices are followed.

Although R-404A delivers strong performance, its high Global Warming Potential (GWP ~3,922) has placed it under increasing regulatory restrictions. Nevertheless, it remains in service across the world due to its established reliability, broad compatibility, and proven track record in demanding refrigeration environments.

Key Features

• ✅ Zero Ozone Depletion Potential (ODP = 0) – environmentally safe for the ozone layer.

• ✅ Excellent Cooling Performance – high capacity, suited for low and medium-temperature applications.

• ✅ Safety Classified A1 – non-flammable, low toxicity for safe operation.

• ✅ Widely Accepted Retrofit Option – long used as a substitute for R-502 and R-22 systems.

• ✅ Proven Industry Standard – trusted by supermarkets, cold chain operators, and food manufacturers.

• ✅ Compatible with Modern Oils – requires POE oils for optimal compressor lubrication.

Applications

• Supermarket display freezers and coolers

• Cold storage warehouses and distribution facilities

• Ice cream machines and frozen food cabinets

• Transport refrigeration units for trucks, trailers, and containers

• Industrial food processing and storage systems

Usage Guidelines

• Always charge R-404A as liquid to maintain blend integrity.

• Use POE (polyol ester) oils exclusively; mineral oils and alkylbenzene oils are not compatible.

• System designs must account for temperature glide management to optimize performance.

• Follow all F-Gas regulations and recovery procedures, particularly in regions with GWP restrictions.

• Ensure regular leak detection and maintenance to minimize environmental impact.

FAQs

Q1: Why is R-404A being phased out?
A: Due to its high GWP (~3,922), many regions, particularly in Europe and North America, are phasing out or heavily restricting its use under environmental regulations.

Q2: What refrigerants can replace Euro R-404A?
A: Lower-GWP alternatives include R-448A, R-449A, and R-407F, which offer similar performance with reduced climate impact.

Q3: Is Euro R-404A safe to use?
A: Yes. Classified as ASHRAE A1 (non-flammable, low toxicity), it is safe under normal handling and operation when industry safety practices are followed.

Q4: Can Euro R-404A be retrofitted into old R-502 systems?
A: Yes. It was specifically designed as a replacement for R-502 and has been widely adopted in retrofit applications, though system adjustments and oil changes are required.