R-417A
R125/R134a/B…R-417A is an HFC refrigerant blend (R-125/R-134a/R-600 at 46.6/50/3.4%) developed as a drop-in replacement for R-22 in air conditioning applications. The small butane (R-600) content provides oil miscibility with mineral oils, potentially eliminating the need for oil change during retrofit. R-417A operates at slightly lower capacity and efficiency compared to R-22, often requiring system adjustments. With a GWP of 2,346, R-417A is subject to phase-down regulations. The blend has found use in retrofit applications where minimizing system modifications is the priority, though R-407C and R-422D are often preferred alternatives with better performance match.
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Key Information
Essential safety and exposure information for R-417A
Health Effects
Low toxicity. Contains small amount of flammable hydrocarbon component. May cause cardiac sensitization at high concentrations.
Common Sources
- Air conditioning retrofits
- heat pumps
- medium temperature refrigeration
Exposure Limits
- WEEL
- 1,000 ppm (8-hr TWA)
- No OSHA/NIOSH limit
- No OSHA/NIOSH limit
- Blend with R125/R134a
- Blend with R125/R134a
Regulatory Status
- EPA Classification
- HFC blend (non-ODS)
- ASHRAE Safety Group
- A1 (low toxicity, non-flammable)
- GWP (AR5)
- 2,346
- ODP
- 0
- AIM Act
- Subject to phase-down
- Use Case
- Drop-in R-22 retrofit with potential mineral oil compatibility
Detection Requirements
- Sensor Technology
- Infrared (NDIR)
- Detection Range
- 0-1,000 ppm typical
- Response Time
- <30 seconds (T90)
- Calibration Frequency
- Annual recommended
- Butane Content
- Contains 3.4% R-600 (butane) but classified A1 as blend
Detection Solutions
Sensors and detectors for R-417A 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.