What is the Difference Between R134A and R1234YF

R-1234yf was introduced in 2015 and became mandatory in Europe in 2017 to replace R-134a in automotive air conditioning systems. R-1234yf and R-134a are similar. The primary reason for the mandate is that R-1234yf has a global warming potential (GWP) 300 times lower than R-134a, which means that it is much less harmful to the environment. Another difference is that R-1234yf is classified by the ASHRAE as a 2L flammable gas, meaning that it is slightly flammable. On the other hand, R-134a is not classified as flammable. Additionally, R-1234yf can be tougher on evaporators than R-134a, which led to the development of this new standard to prevent wear and tear and premature failure of the evaporators. However, there are not really many differences between the way the systems are designed and work, which is one of the reasons that R-1234yf was overwhelmingly chosen to replace R-134a in automotive air conditioning systems.
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