How can we measurably reduce energy use in buildings? What works, what does not work? What are new opportunities to reduce carbon emissions due to building-related energy use? This blog intends to explore these questions, and offer evidence-based support for both robust energy improvements, or for discouraging energy improvements that may not make sense. Our goal is deep energy savings that transform our buildings into ones we are proud of and that do not harm the environment.


Ian founded Taitem Engineering in 1989. He is the co-author of the book Green Building Illustrated (2014) and is author of the book Energy Audits and Improvements for Commercial Buildings (2016), both published by Wiley. He has led many building energy research projects, as well as design and energy projects, and has delivered workshops in the areas of energy and ventilation. He routinely delivers a two-day workshop on net-zero energy building design. He has also led the development of several computer programs which are used in the HVAC, energy, and indoor air quality fields, including TREAT (Targeted Residential Energy Analysis Tools), which was awarded the 2005 national R&D100 Award. He has developed an innovative desiccant cooling system, for which he holds a U.S. patent. Prior to starting Taitem Engineering, he worked for seven years at Carrier Corporation in Syracuse, where he designed heat pumps and air conditioning equipment, and holds eight patents from this work. He has been a visiting lecturer at Cornell University, Tompkins Cortland Community College, SUNY Cortland, and Syracuse University. He holds an undergraduate degree from McGill University, and an M.S. from Columbia University, both in mechanical engineering. Ian is a licensed engineer in the states of New York, Connecticut, and Pennsylvania.


As previously mentioned, Ian founded Taitem Engineering in 1989. Taitem undertakes consulting services in the area of mechanical, electrical, plumbing and structural engineering, commissioning, LEED, energy modeling, sustainability consulting, energy studies, energy research, and specialty contracting services including solar PV installation and Aeroseal duct sealing.

In 2013, Taitem earned B-Corporation status, meeting rigorous standards of social and environmental performance, accountability, and transparency. Taitem Engineering’s staff includes nine licensed professional engineers, six LEED-accredited professionals, BPI-certified energy auditors, certified energy managers, NABCEP-certified solar PV installers, a master plumber, and a master electrician. “Taitem” stands for “Technology As If The Earth Mattered,” reflecting the firm’s commitment to the environment.

“Taitem” stands for “Technology As If The Earth Mattered,” reflecting the firm’s commitment to the environment. Learn more at