I have no idea if my A/C has been converted or not? Anyone know how to tell if it has been converted?

 

R-12 used a Schader with threads to screw a gauge etc on both the high & low sides. There is a valve core just like a tire has. The R134A use a a clip on type valve. You will see a ball that pushes in.
If it has been converted it should have a tag stating so. That is required if it was done professionally.

 

In this picture the person is holding a r134a fitting just above a r12 fitting. If you have r12 simply use a adaptor kit with a fitting like the red one and convert it over. Google is your friend on how to convert it over if ya need help with that.

 

Looks like I have R-12. Thanks for the info guys.

 

Lucky you R12 is way colder but also more expensive than gold. I would use duracool in it its compatable with R12 systems and is colder than 134A