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 talks about applying the concept of Pumping Away on a one-boiler hot-water heating system. He’ll walk you through a diagram and explain how Pumping Away will ...
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.
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...
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...
We’ve lived in this little house in Bethpage, NY since 1977. Bethpage was once home to Grumman, which built fighter planes, canoes, campers, buses, and the Apollo Lunar M...
The heating business has a way of humbling you. After more than 25 years of running service calls on all types of heating and cooling systems, I had managed to tackle the...
Dan Holohan talks with Bryan Orr of HVAC School about how he got his start in the industry, pumping away, classic hydronics, and more in this entertaining podcast. Click ...
If you were to ask someone with knowledge of the hydronics industry, “What’s the first thing that comes to mind when you hear the words ‘PEX tubing and hydronics’?” chanc...
For aging buildings — or newer structures with piping-performance issues — the decision to continue repairing the existing plumbing and heating systems versus doing a tot...
A discussion on The Wall: Paul S. asked, "Has ever heard of screwed copper pipe? I have it on a job and sizes are way off.