In this excerpt from his Classic Hydronics seminar, Dan Holohan tells a story about a mansion that had two Ideal Redflash boilers, each with a rating of 500,000 Btuhs. Da...
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Archive for March, 2020
Mark Honeywell invented the Unique Valve in the early 1900s. It gave him a way of connecting a hot-water radiator at just one side instead of two sides. The Unique valve ...
Last night I was exchanging texts with a friend in WA who is a plumber. The entire family is, actually. Not to linger too long, but they are just great people.
In this excerpt from his Classic Hydronics seminar, Dan Holohan teaches us about the roots of modern hot water heating. At the turn of the 19th Century, central heating w...
Dan Holohan discusses one of Mark Honeywell’s contributions to gravity hot water heating. He wanted to create even heat throughout the building, so in 1909 he solved the ...
In this excerpt from his Classic Hydronics seminar, Dan Holohan teaches us about Mark Honeywell’s Heat Generator. In the early days of hot water heating, Mark Honeywell i...
In this video, Dan Holohan teaches us about gravity hot-water heating systems. Classic gravity heating is both the simplest and the most complicated system of all. It’s s...
Jean Simon Bonnemain created the very first hot-water heating system in Paris in 1777 to heat chickens. In this video, Dan Holohan shares how this system worked and h...
In this excerpt from his Dead Men’s Steam School seminar, Dan Holohan talks about steam traps in steam heating systems. He’ll tell you how steam traps work, how to test s...
In this excerpt from his Dead Men’s Steam School seminar, Dan Holohan shares his knowledge about pressuretrols and the optimum pressure for steam heating systems. He talk...