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Home » Topics » Columns

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Siggy

John Siegenthaler: A persistent question

“But what do I do about cooling?”
John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
August 24, 2020

The versatility of modern hydronics technology allows designers to create systems that are “customized” to the needs — and constraints — of almost any building. 


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The 7-Power Contractor

AL Levi: What if I train them and they leave?

Training is not optional for service contractors.
7 Power Blog
Al Levi
August 20, 2020

One of the most common things I see when I begin my work with a new contracting client is the resistance to train employees. 


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Nicole Krawcke

Nicole Krawcke: Light at the end of the COVID-19 tunnel?

Contracting market report shows spike in growth.
Nicole Krawcke head shot 2024
Nicole Krawcke
July 30, 2020

Normally, making it through July is nothing to celebrate, but given the year we’ve had so far, I’m celebrating the little wins when I can. 


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Ray Wohlfarth

Ray Wohlfarth: Tips for high-efficiency boiler replacement

What could happen? Costly callbacks.
Ray Wohlfarth
July 28, 2020

It was such a simple project; replace the old cast iron boiler with a new condensing boiler. You knocked it out in a few days. 


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Matt Michel

Matt Michel: 7 simple steps to improve your plumbing business

The importance of basic blocking and tackling.
Matt Michel
Matt Michel
July 27, 2020

The coronavirus has captured most of the discussion in the trade press since the lockdowns began. It should have — it’s been the overriding event. 


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Dave Yates

Dave Yates: Legionella in HVAC

Taking a deeper look.
Dave Yates
Dave Yates
July 24, 2020

In 1976, while attending an American Legion Convention at the Bellevue Stratford Hotel, 211 people became ill and 34 of them died from what was thought to be a previously unknown type of bacterial pneumonia. 


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Kenny Chapman

Kenny Chapman: It’s time to evaluate your systems

An effective evaluation process sets you free
Kenny Chapman headshot with a white round border frame, 200x200
Kenny Chapman
July 23, 2020

I’ve been studying human performance (specifically peak performance) for years in individuals and organizations. 


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Dan Holohan

Dan Holohan: Get out and learn

Keep an open mind and think.
Dan Holohan
July 22, 2020

I went to ISH in Frankfurt, Germany with three friends in 1995. 


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Siggy

John Siegenthaler: Don’t mix your piping designs.

A little of this, a little of that — leads to incorrect layouts.
John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
July 21, 2020

Some hydronic system designers cling to certain system piping configurations — even when existing projects using those configurations have produced problems.


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The 7-Power Contractor

AL Levi: Fix things at your company

How to get ahead of the fire.
7 Power Blog
Al Levi
July 20, 2020

What is finally going to fix things at your company? 


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