Articles by John Siegenthaler, P.E.

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.

Here are a few things I think will happen in the hydronic heating industry in the near future.

Burning wood for home heating is a way of life rather than just a fuel choice.

A new office provides a testing ground for new hydronic heating methods.

The December 1997 Hydronics Workshop column showed several ways of using diverter tees in hydronic systems.

Load diversity allows a heat source to be reduced with respect to peak load.