At hpeGROUP we enjoy teaching. I am a guest lecturer and charrette participant at Philadelphia University’s Design IX course. On occasion I give lectures to architectural engineering students at Drexel Univeristy. Gary teaches solar design fundamentals on an as requested basis. Steve is currently finishing three chapters of a new edition to a textbook on plumbing design. So, in the vein of providing young architects with a nice overview of how to view and work with engineering systems, we have included a presentation from a recent lecture to architectural students.