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Home » Topics » Radiant & Hydronics

Radiant & Hydronics
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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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WarmlyYours.gif

WarmlyYours report: Q2 radiant sales as high as the Rockies!

September 4, 2024

Both floor heating and snow melting showed significant growth in the Rocky Mountain region but snow melting saw the biggest increase as it grew from 38% of all sales in Q2 2023 to 54% in Q2 2024.


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Overhead view of a Dunneville, Ontario dairy barn.
Project Profiles

PEXa plumbing system provides long-lasting toughness in dairy barn project

REHAU system speeds installation.
Mihai Broscatean
August 26, 2024

Dairy farming is vital for rural communities and household nutrition. Durable materials like REHAU PEXa plumbing systems are essential for dairy barn construction. Three WRC dairy barn projects feature these systems.


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Installation of two Raypak XVer L 856 units

Commercial boiler melts away concerns of two Washington businesses

Raypak provides snow-melt solutions in Snoqualmie.
Tim Badger
August 16, 2024

The Pass Life community near Summit at Snoqualmie ski resort struggles to keep up with snow removal due to quick snow accumulation. Traditional methods like shoveling and snowblowing are insufficient.


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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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    • 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
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  • EMAGAZINE
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