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Dan Holohan

Dan Holohan operates You can reach him at He loves hearing from you!


A grand punch in the mouth

Lessons learned from the Great Recession and Hurricane Sandy.
July 18, 2013

 I’d like to begin with a big shout-out to that noted philosopher, Mr. Michael Tyson, who once said, “Everyone has a plan, ’til they get punched in the mouth.”

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Thank Denis

A brief history of the steam pressure-relief valve.
March 15, 2013
A brief history of the steam pressure-relief valve.
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We Put the Fish in Efficiency

What exactly is higher efficiency higher than?
February 13, 2013
My friend, Jenni, was visiting from Scotland and had never been to Central Park, so I took her there for a long walk, a ride on the carousel and some wine at the boathouse. We sat outside.
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Hydronic heating has come a long way, but system innovation continues

January 15, 2013
Twenty years ago this month, I wrote a column for this fine magazine titled, “Reaching for Higher Plateaus.”

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Vertical heating

December 1, 2012
Unraveling the mysteries of early 20th century high-rise steam-heating systems.
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The house by Cedar Hill

November 1, 2012
The early days of district steam heating systems in NYC.
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Old boiler room stuff

October 1, 2012
Use this list to troubleshoot old steam-heating systems.

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September 1, 2012
Unskilled workers in your area? Train ‘em!
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Off The Wall: Steam boilers and wet returns

September 1, 2012
I am in the process of getting bids to replace my old (circa 1930s) steam boiler. 
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What might have been

August 1, 2012
The death of a hydronic pioneer’s dream.
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BNP Media's Plumbing Group Visits Grundfos North American Headquarters

BNP Media’s Plumbing Group, comprised of the Plumbing & Mechanical, Supply House Times, PM Engineer (pme) and Reeves Journal brands, recently visited Grundfos’ new North American headquarters building in the western Chicago suburb of Downers Grove, Ill.


Plumbing and Mechanical

March 2014

2014 March

In the March issue of Plumbing & Mechanical, read about the 'living in place' movement and learn how to make your space stylish and comfortable. PM catches up with MCAA president Chuck Fell and spoke with him about his goals for the year. Also in this issue, see the top products of 2013, see who is the March Truck of the Month, and read the latest Tool Tips.
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Trade Associations

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The Plumbing and Mechanical Store

2014 National Plumbing & HVAC Estimator

Every plumbing and HVAC estimator can use the cost estimates in this practical manual!

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Clear Seas Research

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Truck of the Month

Truck of the month

Are you proud of how your service truck looks? Do the graphics give people whiplash as they drive by? Have your calls increased because people remember your truck — and your company name? If so, we’d like to see it, too! Click here to find out how your service truck could be chosen as PM's Truck of the Month.



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