Heating, Ventilation and Air conditioning (HVAC) Lab introduces theoretical knowledge and application of various types of systems and their components. With hands on experimentation and measurement, it gives an insight of real understanding of a system behavior like HRV/ERV. In first of semester, exposure to various sensors and their technologies and particulate matter count helped to understand their application and how to address them in an HVAC system. Simulation module was applying all these understandings to a standard design model and optimize it in context to HVAC because in any building it is the most energy intensive sector. This further helped to analyze its building energy performance.