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John Siegenthaler, P.E.

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

Muddy water

John Siegenthaler, P.E.

December 9, 2011

An installer decides to replace an old cast-iron boiler with a modern mod/con unit that has a 5:1 turndown ratio and integral outdoor reset control.

Coil envy

John Siegenthaler, P.E.

December 1, 2011

Why don’t North American indirect tanks have larger heat exchangers?

Poor Man's Radiant

John Siegenthaler, P.E.

November 30, 2011

In an attempt to avoid purchasing what he considers “fancy valves,” an installer constructs the system shown with globe valves.

Transitions, Part 2

John Siegenthaler, P.E.

November 1, 2011

How to extract more heat from a storage tank.

Tilting at collectors

John Siegenthaler, P.E.

November 1, 2011

Mounting solar panels at the proper angle is critical in maximizing system performance.

Cold Showers And Rusty Vents

John Siegenthaler, P.E.

October 28, 2011

The hydronic system shown was intended to provide heat to a radiant floor slab and an indirect water heater.

Transitions, Part 1

John Siegenthaler, P.E.

October 1, 2011

Using wood-fired heat sources in conjunction with conventional fuel.

Geothermal Heat Pump, Mod/Con Boiler For Radiant Floor Heating

John Siegenthaler, P.E.

September 30, 2011

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.

Pavement To Pool

John Siegenthaler, P.E.

September 1, 2011

A possible operating mode for some hydronic systems.

Retirement Party

John Siegenthaler, P.E.

August 1, 2011

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

View All Articles by John Siegenthaler, P.E.

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