We are at the forefront of building diagnostic procedures and calculations in North America. Thousands 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

Photo of Charlie Holly, Ph.D.

Charlie Holly, Ph.D.

Charlie is the company’s Chief Executive Officer, and senior software designer. He received his B.S. in mathematics and physics from Western Michigan University in 1986 and 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 software developer 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 and software designer, 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.

Photo of Rick Karg, president of Residential Energy Dynamics

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 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. In 2013 Rick spoke at the White House (Obama) in support of the Weatherization Assistance Program (WAP).

Langdon, Úrsula, and Bridger

Langdon Holly Langdon Holly is our CSS (and most everything else for coding) guru. Langdon has been working part-time for RED since 2015. We give our hardest problems to Langdon; they are always solved successfully. Langdon has taken classes at Colby College in Waterville, Maine and, most recently, at Portland State University in Oregon.

Úrsula Hébert-Johnson first started as a RED intern during the summer of 2014, and then kept coming back. She has played an important role in the development of the RED Math Engine and related complexities. Every calculation performed by the RED Calc tools runs hundreds of lines of code written by Úrsula. Her latest work with RED was in the Fall of 2018 as a software engineer, between an internship and full-time position at Facebook. Úrsula received her B.S. in mathematics from Stanford University in 2018, with a minor in computer science. She is now a Ph.D. student in computer science at the University of California Santa Barbara. We expect great things!

Bridger Holly is a master at quickly developing a working prototype for almost anything. He played an important part in the development of RED Calc Pro and our new website. Bridger is a member of the 2021 class at Dartmouth College in New Hampshire, with a major in engineering and a minor in computer science. He is a member of the award-winning Dartmouth Formula Racing team.

Professor RED

Prof RED is the lead philosopher/scientist at Residential Energy Dynamics, directing the team toward new frontiers of building science and ensuring that we are guided by civility, a passion for life, and truth.

The Professor was born around 1750 during the Age of Enlightenment. The field of building science did not yet exist, so he spent his time discussing philosophy and science in coffee houses, literary salons, and scientific academies. He has mentioned that often at these gatherings centuries ago, someone would passionately shout “sapere aude!” (Latin for “dare to know”.)

Professor RED has repeatedly told us a story about the day he was debating the fine line between philosophy and science in a tiny French coffee house in Calais with Hume, Kant, Adam Smith, Rousseau, and Voltaire. Fortunately everyone spoke French. An argument ensued between the Frenchmen; Rousseau and Voltaire; Kant, a German; and Hume, a Scotsman; over the origins of morality.  Separately, Adam Smith and Prof RED, both Englishmen, were speaking quietly at first, but then became enraged arguing over the quality of the Indian tea.  As the commotion reached a crescendo, the shopkeeper expelled the group, insisting that they not return until they had all reached a state of civil enlightenment. 

Our local sage learned a useful lesson from this experience long ago in France: Being a famous character during the Age of Enlightenment does not excuse one from acting with civility in a French coffee house. These days, living in the U.S., Professor RED always acts as a gentleman in Starbucks.

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