This section is your guide to hot-water heating systems with information about system design and piping, air elimination, pumping away, primary-secondary pumping, valves, radiators, troubleshooting tips, and more.
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...
Many buildings, particularly modern buildings, work with both steam and hot-water heating systems. In this excerpt from his Dead Men’s Steam School seminar, Dan Holohan g...
In this video, Dan Holohan tells us about indirect heating. It is a method of heating that the old-timers used to warm fresh air before it entered a building. They placed...
In 1897, Eureka made an early version of what we now call the diverter tee. It worked by creating a drop in pressure along its run, which encouraged the water to flow int...
Should you box in those radiators? Let’s take a look at radiator enclosures. Some people use them because they think old radiators are ugly (I sure don’t).
A bicycle pump is a pump. So is an oil pump on an oil burner. When those machines start, you expect to get a pressure on the outlet side of the pump that’s greater than t...
For many experienced plumbers, there really isn't much to replacing a water heater. It's an easy job: just pick up one that matches what's there, maybe strap it in, and l...