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Home » Topics » Radiant & Hydronics

Radiant & Hydronics
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Mini-Split Heat Pump Heating and Air Conditioning Unit
Hydronics Workshop | John Siegenthaler

Comparing air-to-water versus ductless heat pump systems

An alternative to ductless
John Siegenthaler, P.E.
John Siegenthaler, P.E.
August 2, 2024

I attended a conference hosted by the Building Performance Association and presented on air-to-water heat pump systems. Many professionals were interested in heat pumps, especially ductless air-to-air systems. One person mentioned the difficulty of finding qualified installers for air-to-water heat pumps and noted the higher cost compared to ductless air-to-air systems.



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MRPX_Mullandy.gif

MrPEX names new vice president of sales

July 26, 2024

Mullady will spearhead the enhancement of business operations, customer service, and strategic positioning, driving MrPEX Systems towards achieving its goals.


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Boiler Room with Pressure Tanks and associated Plumbing.
Hydronics Workshop | John Siegenthaler

Follow established piping layouts to prevent reverse thermosiphoning

Reversals revealed.
John Siegenthaler, P.E.
John Siegenthaler, P.E.
July 1, 2024

Flow direction is crucial in hydronic systems. Most designs have a fixed flow direction, but there are situations where reversals can occur. It's important to address these proactively to ensure smooth operations.


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Primer applied

The risks associated with gas appliances are real

The need for acidic condensate neutralizers.
John Vastyan
June 24, 2024

Dave Yates, an expert in forensic plumbing and mechanical systems, emphasizes that in condensing appliances, the acidity of the condensate is linked to three main variables.


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Hydronic heating and cooling system in a Wisconsin university sports complex.

University's new sports complex benefits from hydronic heating and cooling system

Uponor PP-RCT offers a lightweight solution, promoting faster installation and jobsite safety.
Brooke Roberts
June 19, 2024

A western Wisconsin university chose a hydronic system with Uponor PP-RCT piping for their new sports complex to meet project scope, timelines, and space constraints.


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Graphic of hydraulic separation with word cloud that says "MAGIC?" in the center.
Hydronics Workshop | John Siegenthaler

Do you understand hydraulic separation?

A simple but powerful design tool.
John Siegenthaler, P.E.
John Siegenthaler, P.E.
May 29, 2024

Primary/secondary piping is a way to achieve hydraulic separation by connecting multiple hydronic circuits with their own circulators to prevent interference. Using a pair of closely spaced tees is a common method to achieve this.


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Sidewalks above the snow-melt system are made of brick pavers.
Radiant Comfort Report Spring 2024 Edition

Holland Michigan's 35-year-old snow-melt system makes it a year-round destination

Let it snow
Mike Flenniken
May 29, 2024

In 1988, Holland, Michigan’s downtown needed revitalization. Merchants were leaving for a nearby indoor mall. Local industrialist Ed Prince proposed installing a snow-melt system for the streets and sidewalks after seeing a similar system in Europe.


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Resideo hydraulic separator radiant heating system
Radiant Comfort Report Spring 2024 Edition

Protecting what matters most in your radiant system — the water

Water quality is a critical component to radiant and hydronic systems.
Jason Abajian
May 23, 2024

Boiler systems are essential for residential heating and hot water. Their efficiency and longevity depend on good water quality. Poor water quality causes corrosion, scale buildup, and higher costs. Maintaining high water quality ensures smooth operation and durability.


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Kathleen MacDonald High School name and logo, Condors logo on wall.

California K-12 school campus conveys high-tech, futuristic appeal — even in restrooms

Aesthetically pleasing restroom fixtures meet design goals.
Cassie Keeler
May 22, 2024

The Agnews Campus in the Santa Clara Unified School District worked with LPA Design Studios, a California-based integrated architectural and engineering design firm, to design the schools with a high-tech aesthetic.


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Ecowarm RadiantBoard EPS over un-insulated subfloor
Radiant Comfort Report Spring 2024 Edition

Martha's Vineyard mechanical contractor incorporates radiant heating into his own Net Zero strategy

Radiant heating board helps system operate more effectively at lower supply water temperatures.
May 21, 2024

Matt Millard, owner of Performance Mechanical in Edgartown, Massachusetts, loves to experiment with new technologies. Recently, Millard wanted to step up to hydronic radiant heating for his own home addition using an air-to-water heat pump.


Read More
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    • WATER TREATMENT
    • 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
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  • EMAGAZINE
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