Heating with Biomass: It’s Not Just About the Boiler… This article is a guest post by John Siegenthaler, Principal at Appropriate Designs and expert instructor with HeatSpring. John’s 10-week online course, Hydronic-Based Biomass Heating Systems, teaches engineers, heating contractors, and installers how to design and install highly-efficient biomass heating systems.… Continue reading “Heating with Biomass: It’s Not Just About the Boiler…”