Sunday, September 22, 2019

We are at the forefront of building diagnostic procedures and calculations in North America. Hundreds of analysts have used our software for over twenty years; thousands have received our building diagnostic training. We welcome your requests and suggestions.

The Maine Characters

Charlie Holly, Ph.D.

Charlie is the company's Chief Executive Officer, mathematician, and senior programmer. He received his Ph.D. in mathematics from the University of Illinois, Urbana-Champaign in 1992. He taught mathematics at Colby College in Maine and at the University of Illinois.

Charlie was the primary programmer for the ZipTest Pro3 software package and assisted with the design and testing of the ResVent 62.2 app for the iPhone, iPad, and iPod Touch.

He is uniquely qualified for his work at Residential Energy Dynamics; not only is he a mathematician, but he is also a seasoned residential energy auditor, and has worked in many home performance programs. As a result, he understands the needs of those of you in the field trying to make your work more productive and effective.

Rick Karg

Rick is the company's President. He received his M.A. in economics from Miami University in Oxford, Ohio in 1972. He taught economics at New Hampshire College and spent ten years as a building contractor before beginning his long career in the residential energy field. 

He has worked with the DOE low-income weatherization program on national and state levels; is a frequent presenter at national energy conferences; has worked with gas and electric utilities; and writes curricula, standards, and codes. Rick has been on the ASHRAE 62.2 committee since 2007 and was appointed to the Residential Building Committee in 2017. He has served as an editorial adviser for Home Energy magazine for ten years and has been developing and marketing software for residential energy analysts since 1995.

He received the 2015 Phillip C. Hastings award from Efficiency Maine for "his outstanding leadership in the field of building science and energy efficiency". In 2016 he was inducted into the Building Performance Institute (BPI) Hall of Fame.


Our primary purpose is to provide the best software tools and information available so that residential energy-efficiency professionals can maximize the effectiveness of their work. We want to make buildings healthier and less costly places to live, while helping protect the environment outside and inside of our dwellings

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