<![CDATA[Precision Air Conditioning (PAC) is a type of advanced cooling machine with features that enable the cooling process to be carried out more efficiently and effectively. This tool is very suitable for use as a learning tool for practical work. However, PAC cannot be directly adopted, but needs to be conditioned so that it can be used as a learning medium for practical work. This study aims to investigate and adapt the PAC cooling machine so that it can be optimized as a learning medium. The PAC investigation aims to determine the feasibility of the performance of a used PAC cooling machine for use as a practical tool. Then the PAC adaptation aims to add the necessary tools and materials so that the PAC is ready for use for practical activities The research uses the R&D (Research and Development) method to produce PAC demonstration tools with the stages of concept, design, collecting materials, assembly, and testing. The trial was conducted to determine the PAC performance parameters, including air temperature, Refrigeration Effect (RE), Compression Works (CW), and Coefficient of Performance (COP). According to the test results, that the PAC cooling machine can operate well after being adapted as a practical demonstration tool. The PAC cooling machine can produce supply air with a minimum temperature of 16.4 oC. Furthermore, the PAC performance calculation results show an RE value of 136.65 kJ/kg, a CW value of 36.26 kJ/kg, and a COP value of 3.84.]]>
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