An interesting experience that I would like to share:
My 6.9's air conditioning was refrigerating air so well that condensation was forming on the outside of the condensor box behind the dash. Once the condensation reached a certain thickness it dripped down and wet the carpet in the footwells. Initially I thought there was an inaccessible crack or bad seal in the system but this proved not to be the case. It is very difficult to find a leak that doesn't exist!
After seeking the help...