Chiller Refrigerants

Nov 2020 – Of all the current chiller refrigerants in use, R-404A has a GWP of 3922 which is the highest of all the commonly used refrigerants. In order to reduce the impact on the enviroment, R-404A has recently been replaced by two new refrigerants: R-448A and R-449A.

R-404A is a mixed chiller refrigerant composed of the three ingredients R-125, R-134a, and R-143a.  Because its GWP is so high, it has been replaced by R-448A which has a GWP rating of 1273, and R-449A which has a GWP rating of 1397. Both are excellent alternatives to R-404A especially for small to medium sized commercial and industrial refrigeration applications.

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Refrigerant Type: Blend
Blend: R125/143a/134a (44/52/4%)
Oil: Polyolester
Application: Low and Medium temperature chiller applications.
Replacement For: R-22
GWP: 3922

R-448A
Refrigerant Type: Zeotropic Blend
Blend: R-32/125/R1234YF/134a/R1234ZE (26/26/20/21/7%)
Oil: Polyolester
Application: Low and Medium temperature chiller applications.
Replacement For: R-22 and R-404A
GWP: 1273

R-449A
Refrigerant Type:  non-azeotropic  Blend
Blend: R-134a/R1234YF/R125/R32 (25.7/5.3/24.7/24.3%)
Oil: Polyolester
Application: Low and Medium temperature chiller applications.
Replacement For: R-22 and R-404A
GWP: 1397