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Building HVAC Science -Comfort, health & energy efficiency

May 1, 2020

“I grew up thinking that a research scientist was a natural thing to be.”

Stephen Hawking

There’s physical science. And there’s a kind of science as to how the mind works and how people achieve their dreams.

Blend one-part plasma fusion physics with one-part commercial real estate and stir this in an open and...

Mar 6, 2020


“The only think I have learnt over the years is that if you enjoy your work and put in best efforts it will show. If you follow this process, things work out. But if you go chasing a formula, success will elude you.”

Mahesh Babu

While building his own house, John Semmelhack’s innate curiosity grew as he...

Aug 30, 2019

“True genius lies not in doing the extraordinary things, but in doing ordinary things extraordinarily well.”

General Louis H. Wilson, Jr.

Building science principles are few and fairly straightforward; ordinary, perhaps.


HAM: A lot of it amounts to control the flow of Heat, Air and Moisture.


But, like so many...

Aug 23, 2019

May the forces of evil become confused on the way to your house.

George Carlin

Yep, Radon is force of evil.


Pure evil.





But sneaky. It’s deadly over decades.


My good friend Dick Kornbluth joins me to unravel the intricacies of all aspects of Radon – a colorless, odorless,...

Aug 16, 2019


I can’t change the direction of the wind, but I can adjust my sails to always reach my destination.

Jimmy Dean

While we picked a specific topic, this is a wide-ranging episode with my friend in the industry, Eric Stromquist of – 2nd generation controls distributor based out of Atlanta, GA.