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John Siegenthaler, P.E.

John Siegenthaler, P.E., is a consulting engineer and principal of Appropriate Designs in Holland Patent, New York. In partnership with HeatSpring, he has developed several online courses that provide in-depth, design-level training in modern hydronics systems, air-to-water heat pumps and biomass boiler systems. Additional information and resources for hydronic system design are available on Siegenthaler’s website, www.hydronicpros.com.

Articles

ARTICLES

Respecting the law of thermodynamics

August 20, 2015

Myths and methods for protecting boilers against flue gas condensation.

John Siegenthaler, P.E.

July 20, 2015

A significant temperature change is needed for effective thermal storage.

Controlling wood-fueled biomass boiler systems: Part 2

Cooperative effort.

John Siegenthaler, P.E.

June 22, 2015

Every elegant hydronic piping assembly deserves an equally elegant control system.

Piping for wood-fueled biomass boiler systems: Part 1

The market for high-efficiency boilers that burn cordwood, wood pellets or wood chips is growing in North America

John Siegenthaler, P.E.

May 21, 2015

An elegant piping approach for wood-fueled biomass boiler systems.

Piping for radiant panel heating

The Glitch and The Fix, May 2015

John Siegenthaler, P.E.

May 11, 2015

The piping strapped to the bottom of the floor joists is supposedly part of a primary loop.

Looking back to early visions of hydraulic separation

Back to the future in hydronics

John Siegenthaler, P.E.

April 24, 2015

Back in 1996, the hydronics market was expanding at a good pace, largely driven by growing interest in radiant panel heating.

Radiant floor panels supplied by pellet-fired boiler

April 2015 The Glitch and The Fix

John Siegenthaler, P.E.

April 13, 2015

An installer is asked to use a pellet-fired boiler to supply heat to two zones of low-temperature radiant floor panels. The system includes a three-way motorized mixing valve to reduce the supply water temperature to the distribution circuits.

Year-round radiant

Opportunity awaits but it has to be controlled in radiant heating

John Siegenthaler, P.E.

March 30, 2015

Hydronic radiant panel heating has long been known for providing superior cold weather comfort.

First attempt at wall-mounted modulating-condensing boiler

The Glitch and The Fix, March 2015

John Siegenthaler, P.E.

March 12, 2015

A heating contractor who’s trying out his first wall-mounted mod/con boiler installs it as shown above. When buying the boiler, the contractor was told to use a pair of closely spaced tees to separate the boiler and distribution system.