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Home » Topics » Market Sectors » Radiant & Hydronics

Radiant & Hydronics
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Radiant & Hydronics
The information resource for contractors engaged in hydronic heating, radiant heating/cooling, geothermal heating/cooling, and solar thermal.


RCR-Spring-2022      Radiant Comfort Report Buyers Guide   Videos | eNews Sign Up

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ARTICLES

Numbers inform design

John Siegenthaler: System designs need numbers to guide decisions

Numbers inform design
August 1, 2022
No Comments

I’ve written several “Heating with Renewable Energy ”columns covering the benefits of combining modern hydronics technology with modern air-to-water heat pumps.


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controller that measures and responds to temperature

John Siegenthaler: Sensor placement is critical to designing successful hydronic systems

Sensible details
Siegenthaler
John Siegenthaler P.E.
July 1, 2022
One Comment

All hydronic systems designed around renewable energy heat sources — as well as those designed around conventional boilers — have at least one controller that measures and responds to temperature. Common examples are temperature setpoint controllers, outdoor reset controllers, mixing controllers and differential temperature controllers. Complex systems that operate in multiple modes, or use multiple heat sources, often have several temperature-based controllers.


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Heating, cooling and DHW from a single system
RENEWABLE HEATING DESIGN

John Siegenthaler: Heating, cooling and DHW from a single system

Three from one
Siegenthaler
John Siegenthaler P.E.
June 1, 2022
No Comments

As global energy planning moves away from fossil fuels and toward electricity, an increasing number of hydronic heating systems are being supplied by heat pumps. Some use water-to-water heat pumps supplied by geothermal earth loops. Others use air-to-water heat pumps.


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Maintaining constant circulation in heated floor slabs is key

John Siegenthaler: Maintaining constant circulation in heated floor slabs is key

Keep it flowing
Siegenthaler
John Siegenthaler P.E.
May 3, 2022
No Comments

Heated floor slabs, without floor coverings, have one of the lowest supply water temperature requirements of any radiant panel system. This makes them well-suited for use with renewable energy heat sources such as air-to-water heat pumps, water-to-water geothermal heat pumps, biomass boilers and solar thermal collectors.


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Installing a trouble-free condensing boiler
BOILER ROOM

Ray Wohlfarth: Installing a trouble-free condensing boiler

A high-efficiency boiler replacement requires additional planning.
Raynew 200
Ray Wohlfarth
April 8, 2022
No Comments

On the older hydronic systems, replacing the existing boiler with a new one was pretty straightforward. The installer connected the new boiler to the existing flue, piping and electric. The newer high-efficiency boilers are much different and require some additional planning.


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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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Siegenthaler
John Siegenthaler P.E.
April 5, 2022
No Comments
We’re celebrating John Siegenthaler’s 25th anniversary as a Plumbing & Mechanical columnist.
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energy ratings

John Siegenthaler: What you don't pay for

Understanding the alphabet soup of energy ratings.
Siegenthaler
John Siegenthaler P.E.
January 4, 2022
No Comments

Heat pumps move heat from low-temperature sources to higher temperature loads. There are many types of heat pumps, but they all perform this basic thermodynamic mission.


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PEX Q&A

Answering customer questions and myths about PEX

What engineers should know about PEX for hydronic piping applications.
Aaron Stotko
December 15, 2021
No Comments

Even though PEX has a long history in construction applications, its early North American beginnings in residential radiant floor heating systems more than 35 years ago dubbed it a “residential” product for the first decade or so.


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 Radiators for renewables

John Siegenthaler: Radiators for renewables

How to size panel radiators for low water temperatures.
Siegenthaler
John Siegenthaler P.E.
December 6, 2021
No Comments

Modern panel radiators are one of my favorite hydronic heat emitters. They’re easy to install, emit radiant and convective heat, and have high-quality powder coat finishes. 


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heat metering growth opportunities

John Siegenthaler: Paying for heat

Heat metering presents a growing opportunity for hydronics professionals.
Siegenthaler
John Siegenthaler P.E.
November 3, 2021
One Comment

Apartment buildings and condominiums are home to families with different comfort preferences or attitudes on energy use. Similarly, many commercial buildings are divided into spaces where tenants have different temperature requirements or usage schedules.


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More Articles Tagged with 'Radiant & Hydronics'

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AHR Expo 2019

The annual HVAC convention gathered from Jan. 14-16 at the Georgia World Congress Center, attracting thousands of attendees and exhibitors from across the globe to two large convention halls.

January 21, 2019

Victaulic

AHR Expo 2019 New Product Round-up—Day 2

On Day 2 of the 2019 AHR Expo in Atlanta, we’ve provided some of the most interesting product introductions we’ve seen so far in the HVACR industry.

January 20, 2019

Ahrexpo2019 taco 4900

AHR Expo 2019 New Product Round-up—Day 1

On Day 1 of the 2019 AHR Expo in Atlanta, we’ve provided some of the most interesting product introductions we’ve seen so far in the HVACR industry.

January 20, 2019

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