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Home » Topics » Columnists » Dan Holohan: Heating Help

Dan Holohan: Heating Help
Dan Holohan: Heating Help RSS Feed RSS

Creepy crawl spaces

Dan Holohan: Creepy crawl spaces

Snakes and spiders and dead rats, oh my!
Holohan
Dan Holohan
September 30, 2021
No Comments

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.


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Contractor Thinking About Heating System
Heating Help

Dan Holohan: What's inside?

Approach troubleshooting by thinking like the system you’re working on.
Holohan
Dan Holohan
September 2, 2021
No Comments
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.
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Dan Holohan

Dan Holohan: When luck fails you

Ask the important questions on every troubleshooting call.
Holohan
Dan Holohan
July 2, 2021
No Comments

Have you ever had one of those times when you’re trying to figure out some problem and then suddenly the solution comes to you as if by magic? 


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Dan Holohan

Dan Holohan: Are you treating those systems?

Water quality can impact the operation and life cycle of hydronic systems.
Holohan
Dan Holohan
May 27, 2021
No Comments

I was wondering about boiler chemicals and how many contractors (if any) were using them on brand-new systems. Do we need them? 


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Dan Holohan

Dan Holohan: Frugal tools

Pay attention, these tools are tough.
Holohan
Dan Holohan
April 28, 2021
No Comments

Who doesn’t like to talk about tools? I asked a bunch of my friends about the tools that live on in sweet memory as frugal tools — tools that were worth the investment. 


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Dan Holohan

Dan Holohan: Learning from history

Hydronic tidbits from the past.
Holohan
Dan Holohan
April 1, 2021
No Comments

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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Dan Holohan

Dan Holohan: PROcrastination

Is it better left to tomorrow?
Holohan
Dan Holohan
March 1, 2021
No Comments

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


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Dan Holohan

Dan Holohan: How Frank and John taught me to see

All about master venting.
Holohan
Dan Holohan
January 25, 2021
One Comment

In 1989, when I was thinking about writing a book called, “The Lost Art of Steam Heating,” I went to see a young engineer named Frank Gerety. 


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Dan Holohan

Dan Holohan: How vacuum can cause steam problems

Don’t learn the hard way.
Holohan
Dan Holohan
December 23, 2020
No Comments

Back in the old days when most folks burned coal, vacuum was just about everyone’s friend. 


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Dan Holohan

Dan Holohan: How to size a condensate pump

Some advice: Always try to see the system.
Holohan
Dan Holohan
November 27, 2020
No Comments

Most manufacturers rate their condensate pumps in square feet EDR. 


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