Refrigerant R420a, (FreeZone), (R276)

R420a, also known as R276 (often sold as Choice R-420A or FreeZone) is a non-flammable, non-toxic, eco-friendly refrigerant designed as a direct "drop-in" replacement for R-12 in automotive A/C and stationary refrigeration. It features a similar pressure-temperature relationship to R-12, requiring no system modifications or oil changes.