Articles by John Siegenthaler, P.E.

Alternatives to parallel primary loops.

Full-coverage radiant floors may not be the best choice.

The boiler isn't the only source of heat in many hydronic systems.

Visualizing pressure differences is key to proper hydronic design.

Achieving a balance between heat emitter area and supply water temperature.

Learn to design more efficiently by troubleshooting the following hydronic schematic. The answer to this "glitch" can be found in PM's twice-montly e-newsletter Radiant & Hydronics e-News. Sign up for free here.

What happens when flow reverses in primary/secondary systems?

Opportunities await if manufacturers will respond.

Are high-performance condensing boilers compatible with mixing devices?

Those who've worked within the hydronic radiant heating market in most areas of the county have probably been asked about the feasibility of snowmelting. Many hydronic professionals now offer it as a part of their repertoire. It's a natural extension of the skill set learned to design and install radiant heating systems.