1234yf

1234yf is the designation for the refrigerant also known as HFO-1234yf. Its chemical name is 2,3,3,3-tetrafluoropropene. It is a hydrofluoroolefin and has largely replaced R-134a in new automobile air conditioning systems. The primary reason for this transition is its significantly lower global warming potential (GWP). While R-134a has a GWP of 1,430, 1234yf has a GWP of less than 1. This makes it a more environmentally friendly option in terms of its contribution to climate change.

1234yf is a flammable refrigerant, meaning it can ignite under certain conditions. However, its flammability is classified as A2L, which indicates low toxicity and mild flammability. This classification requires specific handling procedures and equipment for servicing and recharging. The transition to 1234yf began in the early 2010s due to regulations aimed at reducing greenhouse gas emissions from mobile air conditioning systems. Manufacturers have implemented various safety measures in vehicle designs to mitigate the risks associated with its flammability.