Radiant & Hydronics Columns - Articles - Page 2

HYDRONICS WORKSHOP

John Siegenthaler: The 'net' effect

Air-to-water and water-to-water heat pumps are destined to claim increasing market share in future hydronic systems.

October 28, 2021

The Coefficient of Performance (COP) of a heat pump is essentially the same concept as the thermal efficiency of a boiler (e.g., the desirable output divided by the necessary input).

Dan Holohan: Creepy crawl spaces

Snakes and spiders and dead rats, oh my!

Dan Holohan

September 30, 2021

October, being the month for ghosts and goblins, seems like the perfect time to reminisce about those tight spots few want to visit, but many must.

John Siegenthaler: Game changer

Heat pumps and chilled water cooling will change the future of hydronics.

John Siegenthaler, P.E.

September 29, 2021

With systems dating back into the 1800s, hydronic heating has been around a long time. As with many technologies, a modern hydronic heating system bears little resemblance to one based on the earliest design techniques and hardware.

Contractor Thinking About Heating System

Heating Help

Dan Holohan: What's inside?

Approach troubleshooting by thinking like the system you’re working on.

Dan Holohan

September 2, 2021

This one goes back a bunch of years. The contractor was a good steam man, but he had run out of ideas with this job. It was a typical, five-story, New York City tenement building. Its one-pipe steam system had served generations of tenants for more than 100 years.

Hydronics Workshop

John Siegenthaler: Freedom of (fuel) choice

Using a heat pump to displace high-priced fuel.

John Siegenthaler, P.E.

September 2, 2021

I recently provided guidance on a unique residential retrofit project. The house, a modest 2,500 square-foot, two-story, was located in a semi-rural area near Albany, New York.

Hydronics Workshop

John Siegenthaler: What I look for

A 'dirty dozen' things that point to trouble ahead.

John Siegenthaler, P.E.

July 29, 2021

I've had lots of opportunities to review plans for pending hydronic heating systems. I've also been on "forensic" visits to sites with improperly performing systems. Of the two, I much prefer plan review over forensics.

Modern Hydronics Done Right Volume 5

eBook

John Siegenthaler, P.E.

December 10, 2019

We are proud to present this fifth and final edition in the "Siggy" eBook series specifically for the hydronics market. Brought to you by Plumbing & Mechanical, PM Engineer and Supply House Times, this FREE eBook is a collection of columns and articles from John Siegenthaler, P.E., a well-respected hydronics expert.

Dan Holohan: Collectors

Each object comes with a story. Sit with it. Hold it. Listen to it.

Dan Holohan

December 6, 2019

When I knocked on the doctor’s front door, a dog on the other side went nuts. And this being my one and only visit to the doctor’s house, I took a healthy step back.

Radiant Comfort Report

Dave Yates: Dominoes

Failure of one part of a hydronic radiant system can cause the entire row to fall.

Dave Yates

November 11, 2019

As a designer/installer of any hydronic radiant system (especially one that incorporates hydro-air, old preexisting standing cast iron radiators and an indirect water heater), you have dozens of steps involved that are not unlike setting up a winding row of dominoes.

Dan Holohan: Thankful

Reflecting and reminiscing this holiday season.

Dan Holohan

November 8, 2019

When our daughters were small, we would wake them before dawn on Thanksgiving morning and drive into Manhattan to watch the Macy’s Thanksgiving Day Parade from a spot on Central Park West, just across the street from The Dakota (the apartment building where John Lennon lived and died).