John Siegenthaler

John Siegenthaler, P.E., operates Appropriate Designs, a building systems engineering firm in Holland Patent, N.Y. He is the author of the course materials for the ASSE 19210, Hydronics Heating and Cooling Installer Professional Qualification Standard,, as well as the author of "Modern Hydronic Heating for Residential and Light Commercial Buildings," and “Heating With Renewable Energy” (both published by Cengage)

HVAC
Retrofitting Air-to-Water Heat Pumps

by John Siegenthaler

Adding upgraded functionality to an existing boiler system
Sizing Baseboard Heating

by John Siegenthaler

John Siegenthaler provides a step-by-step guide to calculating the length of finned-tube baseboard radiators.
Ask the Experts
Q&A: Can I Build a Cabinet Around Hydronic Baseboard?

by John Siegenthaler, P.E.

Even if you install a grille, building a wood cabinet around strip of hydronic baseboard radiator will compromise heating performance
Hydronic Heating for Low-Load Houses

by John Siegenthaler

With the right hardware and layout, hot-water heating saves energy and makes ideal use of the sun.
Insulating a Radiant Slab

by John Siegenthaler

How much insulation is necessary under a typical basement radiant slab?