R449A is a HFO blend refrigerant suitable for use in low and medium temperature applications.

• R449A was developed as a lower GWP alternative to R404A, R507, R407F and R22.
• R449A has a slightly higher GWP than R448A.

Characteristics

• As a retrofit replacement for R404A in supermarket applications, R449A delivers a reduction in power consumption and a significant reduction in carbon footprint in low and medium temperature applications
• R449A is a good alternative to R404A in both low and medium temperature supermarket applications as it has a higher capacity and 5 – 10% better energy efficiency than R404A
• Polyolester oil is required with R449A to ensure adequate oil return
• Existing TX valves may operate satisfactorily with R449A, superheat adjustment will be required. Where practical an electronic expansion device should be considered

Safety and materials handling

Safety Class    Increases energy efficiency saving of up to 10%, Must be charged in the liquid phase to prevent fractionation