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Can i use r134b to replace r134a?

R134a is the most commonly used refrigerant in automotive air conditioning systems today, introduced as a replacement for R12 after it was found to deplete the ozone layer. R134b, on the other hand, is a newer refrigerant that was developed as an alternative to R134a due to its lower global warming potential. While R134b has similar thermodynamic properties to R134a, it is not a direct replacement and cannot be used in systems designed for R134a without modifications. The two refrigerants have different chemical compositions and require different lubricants, so using R134b in an R134a system could lead to damage or reduced efficiency. It is important to use the refrigerant specified by the vehicle manufacturer to ensure proper performance and safety.
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