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Systems Help Center

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

quotes
Nearly Famous Heating Quotes

Gil Carlson, who was the first person to come up with many of the hydronic concepts we take for granted today, was also my teacher. He would often say, “For a difference ...

Published on 01/03/2021 1:49 PM by Dan Holohan
Posted in The HVAC Business
How Vacuum Can Cause Steam Problems

Back in the old days when most folks burned coal, vacuum was just about everyone’s friend. That slow and steady coal fire produced a steam that gently nudged the air from...

Published on 01/03/2021 1:26 PM by Dan Holohan
Posted in Steam Heating
How to Size a Condensate Pump

Most manufacturers rate their condensate pumps in square feet EDR. You can easily convert whatever boiler rating you have to square feet EDR by using these conversion fac...

Published on 12/18/2020 2:04 PM by Dan Holohan
Posted in Steam Heating
resolutions
Trade Resolutions

It’s that time of the year when we’re supposed to get ready to make a resolution or two that will last a few weeks until we slouch back into our usual routines. You know ...

Published on 12/08/2020 12:58 PM by Dan Holohan
Posted in The HVAC Business
Sustainable Steam Heating

Steam Heating Conundrum of High-Rise Buildings in the US Igor Zhadanovsky, Applied Engineering Consulting, Newton, MA, USA Victor Zelmanovich and George Bilenko, Intech21...

Published on 11/03/2020 2:44 PM by Igor Zhadanovsky , Victor Zelmanovich and George Bilenko
Posted in Steam Heating
will it help
Will It Help?

If you’re lucky in life, you’ll occasionally have a conversation with someone that will stay with you forever. Maybe it was something your spouse said when you least expe...

Published on 11/02/2020 4:37 PM by Dan Holohan
Posted in The HVAC Business
Things You Should Know About Steam Traps

Most of this, I had to learn the hard way. Perhaps you’ve done the same, but in case you haven’t, please allow me to save you some heartache. All of this is the absolute ...

Published on 10/23/2020 1:32 PM
Posted in Steam Heating
old books
The First Rule of Stupidity

When you do something stupid, you will always receive an award, which will lead you to do things of greater stupidity. This is the first rule of stupidity, and I learned ...

Published on 10/02/2020 3:09 PM by Dan Holohan
Posted in The HVAC Business
health nation
What Makes Plumbing Healthy

Clean, safe water is what we expect and need running from our taps, but there are a number of things that can get in the way of that goal. I’m not a scientist, just a plu...

Published on 09/25/2020 9:26 AM by Larry Weingarten
Posted in Hot-Water Heating