Dan Holohan

Dan Holohan and his wife, Marianne, founded www.heatinghelp.com in 1997. You can reach Dan Holohan at dan@heatinghelp.com. He loves hearing from you!

Articles

ARTICLES

Early radiant heating systems

From Roman hypocausts to Chinese kangs to Levittown to the invention of PEX.
Dan Holohan
May 29, 2013

Each morning, when I sit at my desk, I give a moment’s thought to the broken copper pipe buried in the concrete slab just below my feet. 


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Radiator Cover-Up

A simple way of killing convection and radiation.
Dan Holohan
April 19, 2013
One of my yellowed heating textbooks has a wonderful drawing of a Victorian radiator that has what looks like a teapot cozy over it.
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We Put the Fish in Efficiency

What exactly is higher efficiency higher than?
Dan Holohan
February 13, 2013
My friend, Jenni, was visiting from Scotland and had never been to Central Park, so I took her there for a long walk, a ride on the carousel and some wine at the boathouse. We sat outside.
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