Krishnan is a subject matter expert with more than twenty ﬁve years of experience in building science, high performance building design, energy codes, energy modeling and building performance simulation software tools. Krishnan lead the development of COMcheck commercial building code compliance software and served as a consultant to ASHRAE 90.1 Envelope Subcommittee on the inﬁltration analysis and progress indicators for the 90.1-2013 version of the standard. In his role as product owner at Autodesk, Krishnan was responsible for EnergyPlus integration with Revit and Insight for heating and cooling load calculations and early design analysis. Krishnan also has more than ten years of experience with energy efficiency evaluation of Federal buildings implementing low-cost/no-cost measures. He is an active member of the ASHRAE technical and standards committees on computer applications, BIM and energy modeling.