• Marco Bonifaccino

How to know what refrigerant uses my car?

Updated: Sep 29





All new cars coming off the assembly line today have R-1234yf refrigerant running through their air conditioning system. However, there are several models that still use R-134a.



How do you tell what’s in there?


There’s a sticker under the hood (Fig. 1), somewhere right up front, that tells you which refrigerant was used in the factory fill, and it also tells you how much. That sticker is part of SAE Standard J639, which provides safety and design standards for automotive air conditioning refrigerant systems.