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

Boiler Choices

One of the choices to be made when tasked with a boiler replacement project is whether to use a condensing or standard efficiency boiler. There are several considerations...

Published on 08/13/2015 10:24 AM by Ray Wohlfarth
Posted in Steam Heating
Common Steam-Boiler-Replacement Mistakes

As we are entering the time that most commercial boiler projects are being planned and installed, I would like to share some common steam boiler oversights that I rarely ...

Published on 08/13/2015 10:20 AM by Ray Wohlfarth
Posted in Steam Heating
Four Boiler-Room Myths

Growing up with a red-haired, Irish mother, I had to learn all the Irish superstitions. The following are some of the examples: Never cross a person on the stairs in a ho...

Published on 08/13/2015 10:10 AM by Ray Wohlfarth
Posted in Steam Heating
Understanding Flame Safeguards

As I accompanied my friend from the local utility company into the boiler room, I noticed that the covers were off all the electrical boxes and wires were hanging out of ...

Published on 08/13/2015 10:02 AM by Ray Wohlfarth
Posted in Steam Heating
Fig 166 Water Gauge
The Dangers of Raising the Water Line

I once met a guy in the fuel oil business who tried to make things easy for his steam customers. They’d call in the spring and complain that they didn’t have enough domes...

Published on 06/08/2015 11:41 AM
Posted in Steam Heating
hago
Production Man

Sixteen years ago, I walked into a Danfoss factory in Denmark and got bear-hugged by a man named Knud Mölholm.“Magazine Man!” he shouted and then grabbed me by the should...

Published on 04/21/2015 11:46 AM
Posted in The HVAC Business
surround day 32 1
Stuck in the Middle with You

There is a restaurant on the ground floor of a large residential building on Manhattan’s Upper West Side that I’ve been servicing for about 15 years now. It’s a busy plac...

Published on 03/15/2015 10:44 AM by John Cataneo
Posted in The HVAC Business