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.
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 how i...
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...
In this excerpt from his Dead Men’s Steam School seminar, Dan Holohan talks about boiler return traps. These were installed on vapor heating systems. There are still many...
The tiny tale I’m about to share with you got me thinking about noisy radiators. It usually doesn’t take much to get me thinking about radiators, but this time the inspir...
In this excerpt from his Dead Men’s Steam School seminar, Dan Holohan talks about how water returns to the boiler in a steam heating system. He covers gravity returns, mo...
In this excerpt from his Dead Men’s Steam School seminar, Dan Holohan tells you about mistakes that create water hammer in your heating systems (and how to avoid them). L...
