Lunar surface exploration is expected to play a central role in future human spaceflight missions, requiring advanced mobility systems capable of supporting long-duration operations. This thesis presents the development of analytical design models for the Thermal Control System (TCS) and the Environmental Control and Life Support System (ECLSS) of a lunar pressurized rover within the framework of the Space It Up! project. The study begins with the definition of the problem, including the mission context, operational requirements, environmental conditions, and vehicle parameters that drive subsystem sizing. Based on these inputs, a parametric modeling approach is developed and implemented in MATLAB to support system design activities.