Articles by John Siegenthaler, P.E.

Those new to designing or troubleshooting hydronic systems often misunderstand how the speed of water flowing through a heat emitter affects heat output.

Here are some design principles for hydronics that guide my thinking now.

We shouldn’t overlook the opportunities to provide floor heating in select areas of houses with existing or planned hydronic systems.

The following excerpt, Chapter 1, describes the benefits of hydronic heating.

If you’re like me the first thing you think of when you hear the words “hydronic radiant heating” is a floor.

Call me weird, but one thing I always enjoy is standing in a mechanical room where a circulator is running so quietly that I’d have to put my ear on it to hear any sound.

Aside from the obvious problems caused by poor design or installation, there are several less conspicuous snags lying in wait for unsuspecting hydronics specialists.

This month’s column summarizes the sizing of a modern diaphragm-type expansion tank.

Solutions for flawed hydronic heating systems.

Now that I’ve picked on engineers a bit, let me say that NPSH is really a pretty simple concept.