The principals of GARD Analytics have been associated with GARD and its ancestor companies for over 20 years. The principals devote full time efforts to building and systems energy and environmental studies and related R&D work.

Jason Glazer, P.E., President and Principal Engineer

Energy Analysis, Energy Code Development, Software Development, 

Mr. Glazer is a registered professional mechanical engineer with over 20 years of experience. His specialties include the use of building simulation software, analysis of utility rates and tracking building energy codes. He performs comparative energy and economic analyses of commercial building heating and cooling systems using the DOE-2 hourly building simulation program. Mr. Glazer is currently a member of the committee responsible for the revision of ASHRAE Standard 90.1 (the commercial building energy code) and the chair of the Energy Cost Budget subcommittee.  Mr. Glazer has authored software to evaluate complex utility rates, manage large scale parametric analyses, translate between different energy simulation languages and to estimate energy savings opportunities in industrial facilities. He has developed a software screening tool for the USDOE to allow analysis and evaluation of integrated building cooling heating power (BCHP) systems. Mr. Glazer developed many of the utilities that come with EnergyPlus including EP-Launch and IDF Editor. Mr. Glazer received a Bachelor of Science in Mechanical Engineering from the University of Illinois at Chicago and is a member of ASHRAE. Mr. Glazer received his professional engineering license in 1998.  He is an ASHRAE certified Building Energy Modeling Professional (BEMP). Mr. Glazer’s e-mail address is jglazer at and phone number is (847) 698 – 5686. He is also the webmaster at this site and administers the mailing lists as

Michael J. Witte, Ph.D., BEMP, Principal Engineer

Building Energy Modeling, Software Testing, EnergyPlus Support and Training

Dr. Witte is a mechanical engineer with almost 25 years experience. Dr. Witte supports GARD’s energy program activities by performing software development, energy simulation studies, economic analysis and data analysis. He has developed a database to estimate the overall resource energy efficiency and related emissions of delivering natural gas and electricity to end-use natural gas or electric appliances. He performs commercial building system energy analysis studies using DOE-2 and BLAST with an emphasis on gas cooling equipment. He developed the underlying simulation models used in GTI’s DesiCalc™ desiccant system analysis tool and the Building Energy Analyzer. Currently, Dr. Witte is principal investigator on a program to provide testing, user support and training, and software development for DOE’s EnergyPlus program. Dr. Witte received a Doctorate in Mechanical Engineering from the University of Illinois. He has authored technical publications on simulation software, solar energy, double-diffusive convection and HVAC design criteria, and he is a member of ASHRAE, ASME, and the International Building Performance Simulation Association.  He is an ASHRAE certified Building Energy Modeling Professional (BEMP). Dr. Witte’s e-mail address is mjwitte at and phone number is (847) 698 – 5685.

Jinchao Yuan, Ph.D., P.E., Engineer

Building Energy Modeling, Software Testing, EnergyPlus Support and Training

Dr Yuan, is a research engineer at GARD Analytics. He has been working on EnergyPlus software development, engineering research, and EnergyPlus user support at GARD Analytics since April 2020. He has contributed to various new features development, bug fixes, refactoring, and code reviews for EnergyPlus official releases. He is also one of the major contributors on the ASHRAE Standard 140 Weather Drivers project for energy modeling software validations and ASHRAE Standard 229 for ASHRAE 90.1 Appendix G based ruleset development. Dr. Yuan’s recent research activities and publications also include topics on innovative building envelope materials, radiative cooling technology applications, and simulation technologies to model and evaluate high-performance building designs. In the past, he was the Co-PI for two externally funded research projects at the University of Idaho. He has also taught energy efficiency courses to the senior and graduate students at the University of Idaho and Boise State University. In addition, Dr. Yuan also has 8+ years of experience in engineering consulting for sustainable designs, energy efficiency programs, and building simulations, using popular simulation programs such as EnergyPlus, TRNSYS, Radiance, Ecotect, and ANSYS Fluent (Computational Fluid Dynamics). Dr. Yuan received his Master of Science degree in Architectural Engineering at Pennsylvania State University and Ph.D. in Building Technology at the Massachusetts Institute of Technology.