Heating, ventilation, and air conditioning (HVAC) designing and drafting is about the technique of controlling the ambient environment including the interior and vehicle environmental comfort. An HVAC system’s principal purpose is to offer thermal comfort and adequate indoor air quality. Mechanical engineers commonly design HVAC systems, which are based on the principles of thermodynamics, fluid mechanics, and heat transfer. A candidate who pursues a course in this design sector could have a highly lucrative career in this industry.