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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

You don't pay for COPs

October 24, 2017

It’s energy cost savings that really matter.

The Glitch: Can you identify, describe, and propose a fix for several problems that are likely to develop with this system

Level-headed

John Siegenthaler, P.E.

October 24, 2017

An unpressurized outdoor wood-fired heater is installed to supply heat to fin-tube baseboard install in a two-story home.

John Siegenthaler: Renewable Heating Design

Flow rate, heat output and Delta-T

John Siegenthaler, P.E.

September 28, 2017

Some things don’t vary proportionally.

John Siegenthaler, P.E.

September 25, 2017

What is the purpose of a check valve?

Figure 1. The Glitch. Do you see any other details that should be changed

Details Matter

John Siegenthaler, P.E.

September 11, 2017

Assuming that the aquastat is operating correctly, and that essential details are all present and correctly installed, why is the system behaving this way?

Details Matter

John Siegenthaler, P.E.

September 11, 2017

Assuming that the aquastat is operating correctly, and that essential details are all present and correctly installed, why is the system behaving this way?

Practice good sensor-ship

Give your temperature controllers 20/20 vision.

John Siegenthaler, P.E.

August 29, 2017

Every hydronic system has one or more controllers that measure and respond to temperature.

Properly sizing and operating circulators

Reducing head loss reduces the kWh of electrical energy required to operate them.

John Siegenthaler, P.E.

July 21, 2017

When designing hydronic circuits, most of us focus on what’s necessary for that circuit to absorb thermal energy at a heat source, carry it along like a conveyor belt and release that energy at one or more heat emitters.

John Siegenthaler, P.E.

June 16, 2017

The math associated with some of our assumptions can lead to incorrect conclusions.

John Siegenthaler, P.E.

May 19, 2017

Keep water moving to prevent frozen pipes and other issues.

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