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You have to have a permit to buy R12 and it is very expensive. Any system that uses R12 can use 134 the replacement for R12. You will need adapters that screw onto the old fittings that accept the hose that hooks to the 134 can. You add freon to the low side of the system. The adapter are different sizes so you cannot put it in the high pressure side. Yes, if you have any mechanical knowledge at all, you should be able to charge the system without much trouble.

OR you can buy all the R12 you like for cheap from Mexican sources and keep the longevity of your original equipment and lower operating pressures of R12. They way your system was designed. R12 comes in everyday by the truckload thanks to our new open border laws.

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Q: Can you charge your AC with R12 freon yourself?
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