At the American Society of Heating, Refrigerating, and Air-Conditioning Engineers’ (ASHRAE’s) IAQ Conference in San Francisco, CA, Larry Schoen, P.E. and principal of Schoen Engineering, Columbia, MD, discussed “Controlling Moisture in Buildings’ Mechanical Systems.” He covered several interrelated aspects of mechanical systems, including plumbing, piping, ductwork, and condensation, much of which would be familiar to hvac contractors.
But perhaps most interesting was his information on the interactions between the roof system and rooftop/exterior hvac systems, and how these can result in moisture infiltration.