Published: June 6, 2018 - by Dan Holohan

Categories: Hot Water


This seminar was filmed on June 5, 2018 as part of the Labor Lecture Series at the General Society of Mechanics and Tradesmen of the City of New York.

Radiant heating with warm water may seem relatively new, but its story starts in 1911 in Liverpool, England, where 119,000 square feet of radiant walls once graced the Royal Liver Building (the world's first reinforced-concrete structure). It was a modern marvel at the time, and it lasted for more than 60 years. In this lecture, Dan Holohan, an international authority on steam heating and hydronics, and author of dozens of books and hundreds of magazine articles about heating systems, old and new, will take us on tour of radiant systems throughout time, and across the world.

Radiant systems are as old as the Romans. These systems heat objects and people without heating the air. They're very economical and their effect is similar to what we feel on a cold day when we stand in bright sunshine, or when we wait outside under a radiant heater for the valet to bring our car. Dan Holohan is a masterful storyteller who combines learning and entertainment in delightful ways. And there's even some rock-and-roll in this one!