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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

Controls and documentation for a sophisticated heating system

Orchestration of a heating system.

John Siegenthaler, P.E.

September 28, 2016

What remains is to assemble a control system that can orchestrate all the required subsystems.

Primary/secondary systems need proper detailing to work correctly

Double dipping in primary/secondary systems.

John Siegenthaler, P.E.

September 28, 2016

A seemingly good idea that doesn’t work.

John Siegenthaler: Renewable Heating Design

A new method for heating domestic water in pellet-fired boiler systems

Domestic water heating is treated using an indirect water heater controlled as a priority load.

John Siegenthaler, P.E.

August 31, 2016

Many pellet boilers are retrofitted into homes with existing hydronic heating.

How to eliminate ghost flow and recirculation issues

Don’t repeat design mistakes.

John Siegenthaler, P.E.

August 31, 2016

How to eliminate ghost flow and recirculation issues.

10 hydronic lessons learned

July 2016 marks my 20th anniversary of writing the Hydronics Workshop for Plumbing & Mechanical magazine.

John Siegenthaler, P.E.

July 22, 2016

Embrace the learning curve.

Outdoor reset is the 'smart' choice

Beyond smartphones, we now have smart watches, smart thermostats and smart windows.

John Siegenthaler, P.E.

June 27, 2016

It’s not sexy, but outdoor reset is still a ‘smart’ choice.

Striving for hydronic ideals in heating systems

Let’s start with heat exchangers.

John Siegenthaler, P.E.

May 23, 2016

Strive for what seems impossible at the present.

Supplying two loads for multiple boiler system

The Glitch & The Fix, May 2016

John Siegenthaler, P.E.

May 16, 2016

An installer has piped a multiple boiler system to supply two loads.

Simple yet elegant hydronic systems

As the North American hydronics industry has grown, so has the complexity of its systems.

John Siegenthaler, P.E.

April 19, 2016

Hydronic systems donít have to be large or complex to be state-of-the-art.

The Glitch and The Fix, April 2016 -- Glitch drawing

Wood-gasification boiler with existing piping

John Siegenthaler, P.E.

April 11, 2016

An installer plans to replace an outdoor wood-fired furnace with a new cordwood-gasification boiler with a rated output of 150,000 Btu/hr. The outdoor furnace is located about 100 ft. from the indoor mechanical room where the 1-in. PEX insulated underground piping joins the thermal storage tank. The installer plans to use the existing underground piping.

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