Refrigerant Reference
Automotive refrigerant reference covering R-12, R-134a, and R-1234yf — vehicle years, global warming potential, and typical vent temperatures.
| Refrigerant | Vehicle Years | GWP | Cooling at Vent (typ.) |
|---|---|---|---|
| R-12 (CFC-12, Freon) | Pre-1994 | 10,900 | 35–45°F |
| R-134a (HFC-134a) | 1994–2015 (most US) | 1,430 | 40–50°F |