Most of the modern hydronics technology used in North America for residential and light commercial buildings is for heating. 

I recently reviewed a project in which a municipal building was being connected to a district heating system supplied by pellet-fueled boilers. 

Whenever a hydronic system is divided into several zones, it’s worth considering a buffer tank between the heat source and distribution system.

There are sorted opinions about using expansion tanks within closed geothermal earth loops. 

I’m fortunate to be living next door to a very unique hydronic heating/cooling system.

We live in a world where most theoretical ideals can only be approached rather than fully realized.  

Although I’ve worked with hydronic heating for four decades, and designed systems around just about every possible heat source, I would be hard pressed to predict what might be available as hydronic heat sources 25 years from now.  

We are proud to present this fifth and final edition in the "Siggy" eBook series specifically for the hydronics market. Brought to you by Plumbing & Mechanical, PM Engineer and Supply House Times, this FREE eBook is a collection of columns and articles from John Siegenthaler, P.E., a well-respected hydronics expert.

The market for pellet-fueled “biomass” boilers continues to grow in North America. This market expansion is driven by several factors.