Maintainability of a building component refers to how easy it is to maintain the component with minimum cost and downtime. Unfortunately,... Show moreMaintainability of a building component refers to how easy it is to maintain the component with minimum cost and downtime. Unfortunately, maintainability issues do not receive enough attention in the design stage and cause serious problems in the post-construction stage such as increasing the life cycle cost of the facility, wasting maintenance materials, and unsatisfactory user experience because of downtime. These problems can be prevented if a tool is available that can help designers make the selection for building components based on maintainability in the design stage. This study aims to develop such a tool that allows designers to evaluate a building’s components relative to maintainability and that helps designers to make a maintainability-based selection in the design stage. To achieve this purpose, this study first identifies a checklist of maintenance actions for components of building systems, in this study condensers. Then, a condenser selector system is developed by coding in Java language. Users can run this selector with any browser with or without a connection to the Internet. This condenser selector system relies on a database that is populated by data about maintenance actions obtained from condensers’ guidebooks or from manufacturers. When using the selector, designers can customize the tool according to their preferences or conditions. At the end, the selector ranks the condensers in the database and allows the designer to make an informed maintainability-based selection. The prototype component selection system is a prototype, but can be expanded by augmenting the system to include other components too. Ideally, a maintainability-based selection tool should include all models of all components in building systems. Such a system could be a significant improvement in the current design practice. Considering the maintainability of components in the design stage could enhance maintenance and facility management. Show less