This software designs most any Commercial or Residential HVAC Systems. What use to take me days and weeks to do, I now do in minutes and hours using the software! its fun and easy to use and its in COLOR, it also integrates with Autodesk Revit. If you are a Consulting Engineer or Design Build Contractor its a must. Use one of the 11 Wizards! simply answer questions and systems are automatically built, calculated, equipment selected and schedules created for construction.