Articles by John Siegenthaler, P.E.

A homeowner tells his installer that he wants a geothermal heat pump as well as a mod/con boiler to supply the radiant floor heating in his new home.

A possible operating mode for some hydronic systems.

After 30 years, it was time for a solar refresh.

The proper application of pressure-independent balancing valves.

An introduction to pressure-independent balancing valves.

The future of hydronics is low water temperature.

Over the last few years, we’ve discussed what hydraulic separators are for and how they should be installed.

Combining the attributes of solar thermal collectors and a wood-gasification boiler.

A hydronic heating system from someone who doesn't want to learn 'a lot of unnecessary knowledge.'

Integrating renewable energy heat sources with contemporary HVAC technologies.