The Spanish Influenza, which caused just over 20,000 deaths in New York City alone,
changed heating once and for all. That’s according to Dan Holohan, a retired writer, consultant, and researcher with extensive knowledge of heating systems and steam heating. (Among his many tomes on the topic: The Lost Art of Steam Heating, from 1992.) Most radiator systems appeared in major American cities like New York City in the first third of the 20th century. This golden age of steam heat didn’t merely coincide with that pandemic: Beliefs about how to fight airborne illness influenced the design of heating systems, and created a persistent pain point for those who’ve cohabitated with a cranky old radiator.Health officials thought (correctly) that fresh air would ward off airborne diseases; then as now, cities rushed to move activities outdoors, from schools to courtrooms. When winter came, the need for fresh air didn’t abate. According to Holohan’s research, the Board of Health in New York City ordered that windows should remain open to provide ventilation, even in cold weather. In response, engineers began devising heating systems with this extreme use case in mind. Steam heating and radiators were designed to heat buildings on the coldest day of the year with all the windows open. Anybody who’s thrown their windows open in January, when their apartment is stifling, is, in an odd way, replicating what engineers hoped would happen a century ago.
Patrick Sisson
Fascinating piece of history! I would have never guessed that radiators – very common in Romania as well to this day – were invented as a pandemic countermeasure. It makes you wonder which innovations will have a similar impact on society a century from now, while their original purpose is long forgotten.