Design Master HVAC can generate a full 3D-BIM model of the ductwork and equipment. The mechanical model can be exported to an IFC file. The IFC file can be importanted into Revit, Navisworks, and Sketchup and used to for 3D collision detection.
Hangers can be included for the ductwork in both 2D and 3D for projects that require that level of detail in their model.