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Home » Topics » Plumbing & Mechanical Contractor » John Siegenthaler: Hydronics Workshop

John Siegenthaler: Hydronics Workshop
John Siegenthaler: Hydronics Workshop RSS Feed RSS

hydronic systems

John Siegenthaler: Well-planned hydronic systems last far longer than modern appliances

Lasting value
John Siegenthaler, P.E.
John Siegenthaler, P.E.
January 3, 2023

Although I’ve worked with hydronic heating for four decades and designed systems around just about every possible heat source, I would be hard-pressed to predict what might be available as hydronic heat sources 25 years from now. 


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Geothermal pipe passages

John Siegenthaler: Geothermal pipe passages

Bringing earth loop piping through poured concrete.
John Siegenthaler, P.E.
John Siegenthaler, P.E.
November 30, 2022

Water-to-water heat pumps, supplied from geothermal earth loops, represent a growing sector of the hydronic heat source market. Most current-generation models can produce water temperatures up to about 125° F, perhaps a little higher if you’re willing to push the compressor operating envelope.


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boiler

John Siegenthaler: Variable speed circulators for boiler protection

Creating a thermal clutch to regulate energy transfer.
John Siegenthaler, P.E.
John Siegenthaler, P.E.
November 1, 2022

 All boilers that burn hydrocarbon fuels such as natural gas, propane, oil or wood produce water vapor as a byproduct of combustion.


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panel radiator

John Siegenthaler: How 'radiant' are your radiators?

Panel radiators allow a wide range of design flexibility.
John Siegenthaler, P.E.
John Siegenthaler, P.E.
October 3, 2022

I’ve written it before and I’ll write it again — panel radiators are one of my favorite hydronic heat emitters. I base this sentiment on several benefits. Here are a few to consider…


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zoned hydronic system

John Siegenthaler: Differing Deltas

Both can work, but there are important distinctions.
John Siegenthaler, P.E.
John Siegenthaler, P.E.
August 31, 2022

The choice between ∆T and ∆P operation of a circulator has, at times, been the subject of rather “heated” debates. It’s almost as if a few Yankee fans are disputing superior pitching or batting performance with a few Red Sox fans. There appears to be some strong opinions involved.


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Offer a total HVAC solution

John Siegenthaler: Heat recovery helper

Offer a total HVAC solution.
John Siegenthaler, P.E.
John Siegenthaler, P.E.
July 29, 2022

As building codes and programs such as Energy Star and Passive House require higher degrees of air sealing in new construction, the use of heat recovery ventilation (HRV) is increasing.


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double port purging valve

John Siegenthaler: Purging principles

Purging plays a major role in the reliable and efficient operation of closed loop hydronic systems.
John Siegenthaler, P.E.
John Siegenthaler, P.E.
July 5, 2022

Nearly all closed-loop hydronic heating and cooling systems are supposed to be filled with water or a mixture of water and antifreeze. The only intentional air in the system is that contained in the expansion tank.


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contemporary approach to providing fresh air

John Siegenthaler: Don't forget about ventilation

Offer a total solution
John Siegenthaler, P.E.
John Siegenthaler, P.E.
May 31, 2022

As residential building codes and energy conservation standards continue to evolve, many are requiring proof of high quality air sealing.


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heated floor slab

John Siegenthaler: Combining an air-to-water heat pump with a heated floor slab

Air-to-slab
John Siegenthaler, P.E.
John Siegenthaler, P.E.
May 3, 2022

Over the last few years, I’ve written several columns describing how air-to-water heat pumps can provide heating, cooling and domestic hot water for homes. Many of the systems involve buffer tanks to help stabilize heat transfer from the heat pump to a zoned distribution system.


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John Siegenthaler’s Top 25 Articles
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John Siegenthaler’s Top 25 most-read articles

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John Siegenthaler, P.E.
John Siegenthaler, P.E.
April 5, 2022
We’re celebrating John Siegenthaler’s 25th anniversary as a Plumbing & Mechanical columnist.
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    • BUSINESS MANAGEMENT
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    • PMC COLUMNS
      • Dave Yates: Contractor’s Corner
      • John Siegenthaler: Hydronics Workshop
      • Kenny Chapman: The Blue Collar Coach
      • Matt Michel: Service Plumbing Pros
      • Scott Secor: Heating Perceptions
  • ENGINEERS
    • CONTINUING EDUCATION
    • DECARBONIZATION | ELECTRIFICATION
    • FIRE PROTECTION
    • GEOTHERMAL | SOLAR THERMAL
    • PIPING | PLUMBING | PVF
    • PME COLUMNS
      • Christoph Lohr: Strategic Plumbing Insights
      • David Dexter: Plumbing Talking Points
      • James Dipping: Engineer Viewpoints
      • John Seigenthaler: Renewable Heating Design
      • Lowell Manalo: Plumbing Essentials
      • Misty Guard: Guard on Compliance
  • RADIANT & HYDRONICS
    • RADIANT COMFORT REPORT
    • THE GLITCH & THE FIX
  • INSIGHTS
    • CODES
    • GREEN PLUMBING & MECHANICAL
    • PROJECT PROFILES
    • COLUMNS
      • Codes Corner
      • Natalie Forster: Editorial Opinion
      • Guest Editorial
    • SPONSOR INSIGHTS
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    • PODCASTS
    • VIDEOS
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  • EMAGAZINE
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