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Our comprehensive HVAC Systems Help Center covers a wide range of HVAC-related topics, including air conditioning and heat pumps, geothermal, hot-water heating, thermostats and controls, solar, steam heating, and warm air. We also have a section of informative and entertaining articles to help you sharpen your HVAC business skills. And our Heating Museum is a captivating journey through the evolution of HVAC technologies. 

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Recent Articles

skates
Your Body Is A Radiator

Ever been to Ocean City, Maryland? It’s a summertime wonderland, and I was lucky enough years ago to get hired to do a seminar on hydronic radiant heating for a group of ...

Published on 03/03/2021 10:17 AM by Dan Holohan
Posted in Hot-Water Heating
NIRA Window Seat Radiator (1916)

This excerpt about the NIRA Window Seat Radiator for Steam and Hot Water Heating is from Facts for Fitters, a 1916 catalog from The Hunting Co.

Thank you to Frank "Steam...

Published on 02/20/2021 1:45 PM
Posted in Heating Museum
Arco Window Radiators (1922)

Here is an excerpt from the 1920 and 1922 Ideal Fitter books from American Radiator Company about their Arco Window Radiators.

Thank you to Frank "Steamhead" Wilsey of A...

Published on 02/14/2021 12:51 PM
Posted in Heating Museum
court
What Is Heat?

Before I retired in 2016, I’d get a lot of calls from lawyers who wanted to hire me to be an expert witness at a trial. They were almost always representing a building ow...

Published on 02/02/2021 3:57 PM by Dan Holohan
Posted in The HVAC Business
how to get the best one pipe steam
How Frank and John Taught Me To See

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. He had written a small book ...

Published on 01/27/2021 10:25 AM by Dan Holohan
Posted in Steam Heating
How To Get The Best From One-Pipe Steam

How To Get The Best From One-Pipe Steam
A Practical Manual for Heating System and Boiler Optimization, Maintenance, Loss Prevention, Replacement, and Installation

By Fr...

Published on 01/19/2021 10:34 AM
Posted in Steam Heating
Trane Mercury Seal Ad (1901)

This document contain an ad from Domestic Engineering (circa 1901) featuring the Trane Mercury Seal which was attached to an old steam heating system or to an old vapor p...

Published on 01/19/2021 10:25 AM
Posted in Heating Museum