John Siegenthaler presented Carlson-Holohan award

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John Siegenthaler was presented the Carlson-Holohan Award at the Caleffi booth during the AHR Show, January 21. The award, relinquished from past winner John Barba, is awarded to those who exemplify the highest standards and practices in the hydronics industry. Past winners Barba, Dan Holohan, Dave Yates, Robert Bean and Mark Eatherton were present when the torch was passed.


From l to r: Hydronics all-stars Bean, Holohan, Siegenthaler, Yates, Eatherton and Barba.

According to Robert Bean, “We created the Carlson-Holohan Industry Award of Excellence in 2004 be awarded every two years to an individual who contributes to the education of the steam and hot water heating industry, recruitment of youth to the trades and fund raising for building construction causes like Habitat for Humanity and the like.”

John Siegenthaler, P.E., is a mechanical engineer graduate of Rensselaer Polytechnic Institute, a licensed professional engineer, and Professor Emeritus of Engineering Technology ad Mohawk valley Community College. “Siggy” has over 32 years of experience in designing modern hydronic heating systems.

John is principal of Appropriate Designs – a consulting engineering firm in Holland Patent, NY. The 3rd edition of his textbook – Modern Hydronic Heating was released in January 2011. John currently writes about hydronic heating and solar thermal system design for Plumbing & Mechanical magazine ( and contributes to idronics, a Caleffi supplement on hydronics.


Dan Holohan (l), John Siegenthaler and Robert Bean share some laughs during the award presentation.

barba, holohan

John Barba (r), gives his speech during the presentation. Barba held the honor for the past two years.


After the event, hydronics giants Bean (l), Eatherton and Yates talk about the good ol’ days.


President of Caleffi North America Mark Olson (l) and Caleffi’s Sergio Casarino pose with Siegenthaler.




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