The development of the AC business in Indonesia, which is increasing rapidly every year, shows that AC has become a basic need for all people. PT Daikin Airconditioning Indonesia's After Sales Service Division provides supporting needs, especially in the provision of installation tools and materials. The results of the analysis that we found stated that one of the levels of durability of a product is from a good installation process and supporting materials. In installation, we prepare high-quality tools to maintain the quality of the installation so that no work is repeated, and in terms of materials, we provide high-quality materials so that they are strong and durable.