R404A is an HFC blend used in low- and medium-temperature commercial refrigeration, cold rooms and transport refrigeration.
About this refrigerant
R404A is an HFC blend of R125, R143a and R134a. It has been widely used in low- and medium-temperature commercial refrigeration systems, cold rooms, display cabinets and transport refrigeration.
ASHRAE safety class is A1 and ODP is zero. Because of its high GWP, the shift to alternative refrigerants in new systems has accelerated in many markets. On existing R404A systems it remains important to keep the correct product identity and to recover the refrigerant properly.
Applications
Cold rooms
Low and medium temperature storage for food and logistics facilities.
Display cabinets
Supermarket and retail refrigerated display equipment that uses R404A.
Transport refrigeration
Truck and trailer refrigeration units designed around R404A capacity curves.
Technical properties
- Chemical name
- HFC blend (R125 / R143a / R134a)
- Formula
- —
- CAS / ID
- Blend
- Type
- Near-azeotropic HFC blend
- Composition
- R125 / R143a / R134a — 44 / 52 / 4 wt%
- Molecular weight
- 97.6 g/mol
- Boiling point (1 atm)
- −46.6 °C
- Critical temperature
- 72.1 °C
- ASHRAE safety class
- A1
- ODP
- 0
- GWP (AR4, 100 yr)
- 3922
- Typical lubricant
- POE (polyolester)
GWP values are based on IPCC AR4, 100-year time horizon. Use current product documents for project and regulatory assessments.
R404A is a high-GWP refrigerant. Suitable equipment must be used for service and recovery. Current stock and cylinder options for this product are available from ACC İklimlendirme.
Frequently asked questions
The ACC Refrigerant range includes R134a, R404A, R410A, R32 and R407C. If you are not sure which gas is right for your system, we recommend checking the equipment nameplate or the refrigerant code specified by the manufacturer. Share the information you have with us and we can help you find the right product group.
R404A is an HFC blend used in low- and medium-temperature commercial refrigeration, cold rooms, display cabinets and transport refrigeration. Because of its high GWP, many new systems are moving to alternatives. On existing R404A equipment the manufacturer’s gas code still applies. Contact ACC İklimlendirme for stock or packaging on R404A.
In general, no. The fact that two gases are used in similar applications does not mean they can be swapped directly. Operating pressure, compressor oil, safety class and system components can differ. Selection must follow the refrigerant code specified by the equipment manufacturer, and different gases must not be mixed in the same circuit. If you are considering a refrigerant change, we recommend obtaining approval from the manufacturer or an authorised technical service first.
GWP is the value used to compare a refrigerant’s contribution to global warming against CO₂. ODP indicates the potential to damage the ozone layer. When comparing these figures, also check which standard and time horizon were used. We state the reference values used on our product pages.
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