Modeling tools are crucial in the design and development of vapor compression systems (VCSs) and their control systems, enabling engineers to predict system behavior, optimize performance, and develop reliable control strategies. This work presents the application of a specialized modeling toolbox designed to assist engineers in VCS modeling and analysis. The toolbox is based on a graph-based approach, leveraging conservation laws - specifically energy and mass - to compute the system’s dynamic behavior. This methodology ensures a precise representation of the thermodynamic processes within the VCS, capturing the complex interactions between its components. In this study, the toolbox is used to model and simulate a simple VCS, demonstrating its effectiveness in reproducing the system's dynamics. The simulation results highlight how the toolbox accurately reflects the performance of main components, such as compressors, condensers, and evaporators. The ability to easily adjust system parameters and analyze their effects on overall performance underscores the tool's utility in the design process. By enabling more efficient and accurate modeling, this toolbox can significantly reduce both the time and costs associated with designing advanced and reliable VCSs.