Square Pipes on a Heating System
Not all pipes are round. Some pipes are square! Dan Holohan tells the story of an interesting hot-water heating system he saw in Germany.
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Our comprehensive HVAC Systems Help Center covers a wide range of HVAC-related topics, including air conditioning and heat pumps, geothermal, hot-water heating, thermostats and controls, solar, steam heating, and warm air. We also have a section of informative and entertaining articles to help you sharpen your HVAC business skills. And our Heating Museum is a captivating journey through the evolution of HVAC technologies.
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Recent Articles
One-Pipe Hot-Water Heating Systems
Dan Holohan shares his knowledge about one-pipe hot-water heating systems. He talks about diverter tees, monoflo tees, thermostatic radiator valves, pumping away from the...
Lime Day
Some years ago, back when my joints didn’t crack when I dragged myself off the couch, I was father to four little girls. The last two are twins and there’s just a bit mor...
Steam Boiler Care During The Pandemic
During this pandemic, most brewers are shut down, and no one knows when we as a country will restart. During this time, it is easy to forget about the boiler, and that co...
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Heating Help YouTube Channel
Informative and entertaining videos about steam and hot-water heating systems
Heating Help presents The Dead Men's Steam School and Classic ...
Pumping Tips for Hot Water Heating Systems
In this excerpt from his Classic Hydronics seminar, Dan Holohan shares his knowledge about pumps in hot water heating systems. He talks about the history of circulators a...
A Cautionary Tale for Replacing Boilers on Hot-Water Heating Systems
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...
Honeywell’s Unique Valve
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 ...
Thank A Plumber
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.
The Development of One-Pipe Hot Water Heating and the OS Fitting
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...