R404A properties
| Code | R404A |
|---|---|
| Chemical name / composition | Blend of R125, R143a and R134a R125 / R143a / R134a (44% / 52% / 4%) |
| Family | HFC blend |
| GWP (AR4, 100 years) | 3,922 |
| ODP | 0 |
| Safety class (ISO 817 / ASHRAE 34) | A1: lower toxicity, non-flammable |
| Boiling point (1 atm) | −46.2 °C |
| Temperature glide | 0.7 K |
| Charge equal to 5 t CO₂e | 1.27 kg |
| Status | Being phased down |
Where is R404A used?
- Cold rooms and cold stores
- Supermarket freezer cabinets
- Blast freezers
- Transport refrigeration
Service and safety notes
- Near-azeotropic blend: negligible glide, but blends are still charged in liquid phase.
- Non-flammable and low toxicity (A1). A large leak in a closed room can still displace oxygen, so gas detection is recommended in small plant rooms.
- Never charge a system with a refrigerant other than the one on its nameplate; retrofits need manufacturer approval and oil and component checks.
- Charging, recovery and leak checks must be done and recorded by F-gas certified technicians.
R404A and regulations
Covered by Türkiye's Regulation on Fluorinated Greenhouse Gases (Official Gazette, 15 October 2024). HFC supply is being phased down with quotas, high-GWP gases are restricted earlier, leak-check intervals depend on the CO₂-equivalent charge, and handling requires certified technicians. With a GWP above 2,500 it should not be chosen for new systems; existing systems should plan a conversion. Always check the current legal text for exact dates and scope.
Alternatives to R404A
- R448A: HFO/HFC blend, GWP 1,387, A1
- R449A: HFO/HFC blend, GWP 1,397, A1
- R452A: HFO/HFC blend, GWP 2,140, A1
- R744: Natural refrigerant, GWP 1, A1
- R290: Hydrocarbon (natural), GWP 3, A3
Compare all refrigerants in our refrigerant guide.
Other refrigerants
Our base is in Ankara Etimesgut. We work daily in Ankara and on a project and contract basis across Türkiye. Türkçe sayfa.
Frequently asked questions
What is the GWP of R404A?
The 100-year global warming potential (AR4) of R404A is about 3,922.
Is R404A flammable?
A1: lower toxicity, non-flammable.
What can replace R404A?
Depending on the application: R448A, R449A, R452A, R744, R290. Conversions require manufacturer approval and oil and component checks.