Articles by John Siegenthaler, P.E.

Answers to the questions you've been asking.

When it comes to comfort, even a small heated floor makes a big impression.

One benefit of hydronic heating is the relative ease of dividing the distribution system into several independently controlled zones.

Are you oversizing the expansion tanks in your radiant heating systems?

Radiant heating technology in the hands of knowledgeable professionals can provide superior comfort and value.

A more elegant solution to controlling differential pressure as zone valves close is to reduce the speed of the circulator.

Our high-tech systems are older than you think.

Link up those boilers and loads for the best results.

The use of European-style panel radiators continues to grow in North America.

Outdoor reset control enables heat to flow from heat emitters smoothly, continuously and at the right rate.