This is a new project, it has a lot of Complex points. I should design all #aircondition system with high standards because my client is a doctor and very obsessive about his building. So, at first, I provide and predict enough fresh air to all spaces. I should consider all zones have control by temperature. Finally, the most difficult situation is surgery rooms, clean air with an air handling unit with special filtres. Eventually, the same as all the time I can solve most of the difficult points by #REVIT and save more money for my client.