What Is Refrigerant?
Air conditioning systems are closed loops and rely on a complicated solution known as refrigerant to function. For years a solution known as R-134a was favored and is still in widespread use, but it is gradually being replaced by new types of refrigerant considered to be more environmentally friendly. New solutions, such as R-1234YF (a hydrofluoroolefin) can be used in lower volumes and more efficiently.