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Home » Topics » Columns

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Dan Holohan

Dan Holohan: Learning from history

Hydronic tidbits from the past.
Dan Holohan
April 1, 2021

We’ve come a long way since the days of gravity-hot-water heating. The physics haven’t changed a bit, but the systems sure have. 


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Siggy

John Siegenthaler: 4-way versus 3-way motorized mixing valves

Which is the better choice, and why?
John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
April 1, 2021

Although the market for gas-fired boilers continues to track toward those that can modulate and operate with sustained flue gas condensation, conventional boilers (e.g., those not designed to operate with sustained flue gas condensation) still represent a significant portion of the market. 


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Al Levi

Al Levi: Marketing needs great testimonials

Great testimonials help keep the phone ringing.
7 Power Blog
Al Levi
March 31, 2021

When we see a testimonial, we know someone else has already tested the waters for us. Especially in today’s crowded marketplace, you need something that sets your contracting company apart.


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Nicole Krawcke

Nicole Krawcke: Changing the narrative on plumbing

Industry pros need to combat the stereotype to overcome the labor shortage.
Nicole Krawcke head shot 2024
Nicole Krawcke
March 9, 2021

I am lucky enough to talk to contractors, both large and small, all across the U.S. Inevitably, when I ask them about their greatest challenge or greatest future challenge, the answer is always the same: The skilled trades labor shortage. 


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Codes Corner

Codes Corner: How code or specialty plumbing certification sets you apart as a contractor or engineer

Differentiate yourself from your competitors.
Christoph Lohr headshot
Christoph Lohr
March 4, 2021

I frequently speak at college campuses and trade apprenticeships. Whether it be to future engineers or contractors, my technical talks typically end up covering non-technical content, specifically career development. 


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Matt Michel

Matt Michel: Plumbing in the age of uncertainty

Six ways plumbers can respond.
Matt Michel
Matt Michel
March 3, 2021
Dave Yates

Dave Yates: Run away boilers

Scary stories to keep you awake at night.
Dave Yates
Dave Yates
March 2, 2021

If you have never been face-to-face with a run away boiler, I can assure you it makes your sphincter pucker!


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Kenny Chapman

Kenny Chapman: Who wants to be mediocre?

Sink into it or rise above it.
Kenny Chapman
March 1, 2021

All leaders and all people have a silent enemy: Mediocrity


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Dan Holohan

Dan Holohan: PROcrastination

Is it better left to tomorrow?
Dan Holohan
March 1, 2021

We’re only human, and most humans like to put off things until they absolutely have to be done. 


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Siggy

John Siegenthaler: Unique circumstances

Multi-zone heating, single zone cooling.
John Siegenthaler 200x200 author headshot on a white background.
John Siegenthaler, P.E.
February 26, 2021

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. 


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