R-449A
R32/R125/R13…R-449A (Opteon XP40) is an HFO/HFC refrigerant blend developed as a non-flammable, lower-GWP alternative to R-404A and R-507A in commercial and industrial refrigeration. With a GWP of 1,397—about 65% lower than R-404A—R-449A offers substantial environmental benefits while retaining A1 safety classification. The blend contains HFO-1234yf along with R-32, R-125, and R-134a, balancing performance with environmental responsibility. R-449A is widely used in supermarket refrigeration, cold storage, transport refrigeration, and ice machines. The refrigerant requires POE lubricant and can be used in new systems or retrofit applications with appropriate adjustments.
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Key Information
Essential safety and exposure information for R-449A
Health Effects
Low acute toxicity. A1 safety classification (non-flammable). May cause cardiac sensitization.
Common Sources
- Supermarkets
- cold storage
- transport refrigeration
- commercial freezers
Exposure Limits
- WEEL
- 1,000 ppm (8-hr TWA)
- No OSHA/NIOSH limit
- No OSHA/NIOSH limit
- HFO blend
- HFO blend
Regulatory Status
- EPA Classification
- HFC/HFO blend (non-ODS)
- ASHRAE Safety Group
- A1 (low toxicity, non-flammable)
- GWP (AR5)
- 1,397
- ODP
- 0
- AIM Act
- Lower priority for phase-down due to reduced GWP
- EPA SNAP
- Listed as acceptable for commercial refrigeration
Detection Requirements
- Sensor Technology
- Infrared (NDIR)
- Detection Range
- 0-1,000 ppm typical
- Response Time
- <30 seconds (T90)
- Calibration Frequency
- Annual recommended
- HFO Content
- Contains HFO-1234yf component
Related Applications
Industries and environments where R-449A detection is critical
Detection Solutions
Sensors and detectors for R-449A monitoring
cGas Detector VRF IR Refrigerant Transmitter
An aesthetic, non-dispersive infrared refrigerant gas detector for acute leak detection in modern energy-efficient buildings utilizing Variable Refrigerant Flow (VRF) HVAC systems.
cGas-SC Self-Contained Controller
A self contained controller with up to 3 gas channels, Plug & Play Smart Sensor Technology and configurable logic control and priority settings. Offers superior user customization and reliable gas detection performance for monitoring many gases.
cGas Detector IR Refrigerant Transmitter
Non-dispersive infrared refrigerant gas detector with accurate, low level leak detection, available with analog output or BACnet® or Modbus® output and Plug & Play Smart Sensor Technology.
FCS Multi Channel System Controllers
High performance controller with logic and priority settings for monitoring toxic, combustible and refrigerant gases with versatile control functionality. Available with Modbus® or BACnet® communication with BAS, supports 4-20 mA and Modbus® driven VFDs.