Autodesk AutoCAD, a widely used Computer-Aided Design (CAD) software, is extensively employed in HVAC engineering for tasks such as system layout, schematic diagrams, ductwork design, equipment selection, load calculations, and 3D modeling. HVAC professionals use AutoCAD to create detailed drawings that help visualize, plan, and implement heating, ventilation, and air conditioning systems. The software supports collaboration among team members, precise documentation, and efficient creation of construction plans and specifications. AutoCAD’s versatility and compatibility make it a valuable tool for HVAC engineers in designing, drafting, and documenting components of HVAC systems.