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Home » Topics » Plumbing & Mechanical Contractor

Plumbing & Mechanical Contractor
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Boiler Room
Heating Perceptions | Scott Secor

A grossly oversized boiler system

Always follow the heat loss calculation.
Scott Secor
Scott Secor
September 9, 2024

Last fall, we assessed a boiler replacement project for a town hall. Three out of four existing rare condensing cast iron boilers were inoperable within two years, and seven out of eight boilers failed within 10 years. During our visit, we meticulously examined various aspects to identify any potential issues.


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Domestic water heat pump
Hydronics Workshop | John Siegenthaler

Switching heat pumps between domestic water heating and cooling

Switching space heating to cooling, and vice versa.
John Siegenthaler, P.E.
John Siegenthaler, P.E.
September 5, 2024

Air-to-water heat pumps and water-to-water geothermal heat pumps provide warm water for space heating, domestic water heating, and chilled water for cooling. Switching a hydronic heat pump system from space heating to cooling and vice versa seasonally is relatively simple. The system operating mode is changed at the thermostat or a dedicated system mode switch with heat, off, and cool settings.



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20 PM 2024 NextGen ALL-STARS Top 20 under 40 David Williams.jpg
Plumbing & Mechanical Next Gen ALL-STARS

Next Gen All Star: David Williams

Top 20 Under 40 Plumbing Professional
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Nicole Krawcke
September 3, 2024

Meet 2024 Next Gen All Star, David Williams.


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2024 NextGen ALL-STARS Top 20 under 40 Saeed Warden
Plumbing & Mechanical Next Gen ALL-STARS

Next Gen All Star: Saeed Warden

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Nicole Krawcke
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Meet 2024 Next Gen All Star, Saeed Warden.


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Plumbing & Mechanical Next Gen ALL-STARS

Next Gen All Star: Jaden Troester

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Meet 2024 Next Gen All Star, Jaden Troester.


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2024 NextGen ALL-STARS Top 20 under 40 Dean Taylor
Plumbing & Mechanical Next Gen ALL-STARS

Next Gen All Star: Dean Taylor

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Meet 2024 Next Gen All Star, Dean Taylor.


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2024 NextGen ALL-STARS Top 20 under 40 Brandon Stubl
Plumbing & Mechanical Next Gen ALL-STARS

Next Gen All Star: Brandon Stubl

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Meet 2024 Next Gen All Star, Brandon Stubl.


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2024 NextGen ALL-STARS Top 20 under 40 Kendia Simpson-Holness
Plumbing & Mechanical Next Gen ALL-STARS

Next Gen All Star: Kendia Simpson-Holness

Top 20 Under 40 Plumbing Professional
Nicole Krawcke head shot 2024
Nicole Krawcke
September 3, 2024

Meet 2024 Next Gen All Star, Kendia Simpson-Holness.


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2024 NextGen ALL-STARS Top 20 under 40 Ethan Silverman
Plumbing & Mechanical Next Gen ALL-STARS

Next Gen All Star: Ethan Silverman

Top 20 Under 40 Plumbing Professional
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Nicole Krawcke
September 3, 2024

Meet 2024 Next Gen All Star, Ethan Silverman.


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2024 NextGen ALL-STARS Top 20 under 40 Curtis Rennie
Plumbing & Mechanical Next Gen ALL-STARS

Next Gen All Star: Curtis Rennie

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Nicole Krawcke
September 3, 2024

Meet 2024 Next Gen All Star, Curtis Rennie.


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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
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