Understanding AC Refrigerant Gases — With Care Skills Academy At Care Skills Academy trainees in the AC Repair and Maintenance course gain practical knowledge of different refrigerant gases used in air conditioning systems. These gases are essential for the cooling process, and understanding their types, uses, and safety standards is crucial for any AC technician. — Common AC Refrigerant Gases | Refrigerant | Cylinder Color | Used In | Properties** | | ————— | —————— | —————————— | —————————————