Refrigerant R-453A (RS-70 / RS-44B)
RS-70 (R-453A) is an HFC (hydrofluorocarbon) refrigerant developed as a direct replacement for R-22, with zero ozone depletion potential. It is recognized for its ease of retrofit and high operating efficiency. According to a study carried out by the Polytechnic University of Catalonia (UPC), R-453A provides greater cooling capacity and improved performance compared with R-417A, R-422D and R-434A.
With a GWP of 1,765, it is not affected by the restrictions introduced under Regulation (EU) No. 517/2014 (F-Gas), which since January 2020 applies to refrigerants with a GWP of 2,500 or higher.
R-453A is not recommended as a direct replacement for R-22 in flooded systems.












