A-Gas R404A HFC Refrigerant
R404A is an HFC refrigerant blend used as a replacement for R502 and R22 in low and medium-temperature refrigeration applications.
Designed with comparable physical and thermodynamic properties to R502, R404A has been widely used across commercial refrigeration, industrial refrigeration and transport refrigeration systems. A-Gas notes that R404A is under increased scrutiny due to its high Global Warming Potential, with lower-GWP alternatives such as R407F, R407A, R448A and R449A now receiving greater focus.
Key Features
R404A refrigerant
HFC refrigerant blend
Replacement for R502 and R22 in suitable systems
Suitable for low and medium-temperature refrigeration
Near azeotropic blend containing R125, R143a and R134a
Comparable physical and thermodynamic properties to R502
Non-flammable refrigerant
A1 safety classification
Must be charged from the liquid phase
Requires polyolester oil in the compressor
Commonly used in commercial refrigeration
Suitable for industrial refrigeration and transport refrigeration applications
Under scrutiny due to high Global Warming Potential
Lower-GWP alternatives include R407F, R407A, R448A and R449A
A-Gas cylinders include dual port valves for easier liquid offtake
Specifications
| Specification | Details |
|---|
| Product | R404A |
| Brand | A-Gas |
| Refrigerant Type | HFC Blend |
| Blend Type | Near Azeotropic |
| Components | R125, R143a and R134a |
| Common Replacements | R502 and R22 in suitable systems |
| Applications | Low and medium-temperature refrigeration |
| Suitable System Types | Commercial refrigeration, industrial refrigeration and transport refrigeration |
| Safety Classification | A1 |
| Flammability | Non-flammable |
| Charging Requirement | Charge from liquid phase |
| Oil Requirement | Polyolester oil |
| Lower-GWP Alternatives | R407F, R407A, R448A and R449A |
| Cylinder Feature | Dual port valves for easier liquid offtake |
| Storage Requirement | Cool, dry, well-ventilated area out of direct sunlight |
| Recommended Category | Refrigeration > Refrigeration Components > Refrigerants |
Applications
Commercial refrigeration
Industrial refrigeration
Transport refrigeration
Low-temperature refrigeration systems
Medium-temperature refrigeration systems
Cold storage cells
Ice machines
Vending machines
Suitable R502 replacement applications
Suitable R22 replacement applications
Safety & Documentation
R404A must be handled by appropriately licensed refrigeration and air-conditioning technicians. As a near azeotropic refrigerant blend, it must be charged from the liquid phase to maintain accurate composition during installation and service.
A-Gas notes that compressors must be charged with polyolester oils, and technicians should contact the compressor manufacturer for system-specific oil compatibility guidance. Store cylinders in a cool, dry and well-ventilated area, away from direct sunlight. Always refer to the current A-Gas Safety Data Sheet and equipment manufacturer guidance before use.
A-Gas R404A is a practical non-flammable A1 HFC refrigerant for suitable low and medium-temperature commercial, industrial and transport refrigeration systems where R502 or R22 replacement performance is required.
