Refrigerant Guide
R-404A — EPA Regulations, Phase-Out Schedule & Alternatives
Last updated: April 2026
Researched by the RefrigerantTrack Research Team
Overview
Full Name
R-404A (HFC Blend)
Global Warming Potential (GWP)
3,922
Ozone Depletion Potential (ODP)
0
Ozone Depleting Substance
No
Phase-Out Status
Phased Out
Effective: January 1, 2024
Phase-Out Status
Production and import banned as of January 1, 2024.
R-404A can no longer be produced or imported for use as a refrigerant in the United States. Existing systems may still be serviced using reclaimed or recycled refrigerant, but supply is shrinking and costs are rising. Planning a retrofit or equipment replacement is strongly recommended.
Key Regulatory Facts
These facts are drawn from EPA regulations, the AIM Act, and Montreal Protocol obligations. Each is a standalone verifiable statement.
R-404A has a Global Warming Potential (GWP) of 3,922 — the highest of any common commercial refrigerant in widespread use, and nearly four times the GWP of CO₂ on a 100-year basis.
EPA SNAP Rule 23 prohibits the use of R-404A in new retail food refrigeration equipment as of January 1, 2024.
R-448A and R-449A are the most common lower-GWP replacements for R-404A in low-temperature commercial refrigeration, with GWPs of approximately 1,387 and 1,397 respectively.
EPA Section 608 Requirements
Systems containing 15 lbs or more of R-404A are subject to the following EPA requirements.
| Requirement | Value |
|---|---|
| Appliance charge threshold (leak tracking required at or above) | 15 lbs |
| Max annual leak rate — commercial refrigeration | 15% |
| Max annual leak rate — comfort cooling | 30% |
Thresholds reflect the January 1, 2026, EPA Section 608 rule change reducing the appliance charge threshold from 50 lbs to 15 lbs.
Alternatives to R-404A
The following refrigerants are recognized EPA SNAP alternatives or successor refrigerants for R-404A applications. Always consult a certified HVAC technician before switching refrigerants.
Common Uses
- Low-temperature commercial refrigeration (walk-in freezers, blast chillers)
- Supermarket display cases
- Cold storage warehouses
- Food processing refrigeration
- Transport refrigeration (legacy systems)
Frequently Asked Questions
Is R-404A banned?
R-404A is prohibited in new retail food refrigeration equipment installed on or after January 1, 2024, under EPA SNAP Rule 23. Existing systems containing R-404A can continue to operate and be serviced with reclaimed refrigerant. The ban applies to new equipment, not to continued use in systems already in service. However, R-404A's extremely high GWP (3,922) makes it a priority for retrofit or replacement in any long-term decarbonization planning.
What replaces R-404A in commercial refrigeration?
R-448A and R-449A are the most widely adopted low-GWP retrofit replacements for R-404A in low-temperature applications. R-407A is another option for medium-temperature systems. CO₂ (R-744) transcritical systems are the zero-GWP alternative for new supermarket builds in temperate climates. The choice depends on operating temperatures, ambient conditions, and whether you are retrofitting existing equipment or installing new.
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