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Home » Authors » Dan Holohan

Articles by Dan Holohan

Why is it a British thermal unit?

Dan Holohan
February 4, 2016

Ever wonder why it’s a British thermal unit and not a Polish thermal unit?


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The origins of the British thermal unit

Why not a Ptu?
Dan Holohan
January 20, 2016

Ever wonder why it’s a British thermal unit and not a Polish thermal unit?


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A new look at vacuum heating

Dan Holohan
December 21, 2015

Simple modifications make this system quiet and maintenance-free.


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Fishing guides and heating techs

Dan Holohan
October 23, 2015

Human nature is a glorious thing, as is ego.


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How PEX was invented

Dan Holohan
September 28, 2015

Chickens and the 1972 Olympics helped PEX tubing find its niche.


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Thomas Engel, inventor of PEX

Dan Holohan
September 28, 2015

The invention of PEX and the permanent-magnet motor.


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The evolution of the tee

Dan Holohan
August 20, 2015

The history and evolution of the tee.


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Why steam boilers short-cycle

Dan Holohan
July 20, 2015

Where there is air, steam will not go.


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New York City's first technical school

Dan Holohan
June 22, 2015

I’m honored to be part of New York City’s first technical school. 


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A look at Danfoss' production cycle of burner nozzles

The intricacies of a nozzle should not be taken lightly
Dan Holohan
April 24, 2015
Andrew Kozdron has a title: production manager, heating solutions, division of Danfoss.


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