Since the Republic of Indonesia ratified the Vienna Convention and the montreal protocol, with the RI Presidential Decree No. 23 of 1992, then Indonesia will follow the program decreased the use of CFCs (Freon 11, 12, 113, 114 and 115) and halon (fire extinguishing material) in accordance with the schedule particular. Originally the use of CFCs will expire in 2000, but with "proposed EEC regulation 1992", end the use of CFCs filed until 1 January 1996, with details of January 1, 1994 85% reduction in the use of CFCs. As it is known that the CHC and halon is a substance that can erode the ozone and the greenhouse effect, for the earth (ozone depletion potential). Freon 12 is much used for motor vehicle air conditioner and refrigerator, while Freon 22 is used in AC buildings and hotels. As a substitute for freon - 12 used HFC - 134a which has similar properties, particularly for motor vehicle air conditioning refrigerant, is a substitute Freon - 22 used klea blend 60. Freon Substitute 12 with HFC - 134a not without problems. The main problem is the problem of packing / compressor seals, flexible pipes and lubricating oils, in addition to other problems. In research on replacing freon 12 with HFC - 134a, apparently there is little difference to work on machines for refrigeration. The cooling effect of HFC - 134a were higher about 23% and power per kg / hr of refrigerant more than 30%, while the coefficient for the work (with the basic lattice bonds), smaller 8%, when compared with the use of refrigerant Freon 12. At high temperatures, pressures on HFC - 134a is slightly higher than Freon - 12
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