Skip to Content

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. 

Find help by category

Recent Articles

Honeywell’s Unique Valve

Mark Honeywell invented the Unique Valve in the early 1900s. It gave him a way of connecting a hot-water radiator at just one side instead of two sides. The Unique valve ...

Published on 03/26/2020 1:38 PM by Dan Holohan
Posted in Hot-Water Heating
thank plumber
Thank A Plumber

Last night I was exchanging texts with a friend in WA who is a plumber. The entire family is, actually. Not to linger too long, but they are just great people.

Published on 03/25/2020 2:48 PM by Bryce Malone and Sales Manager at Triangle Tube
Posted in The HVAC Business
Honeywell's Heat Generator

In this excerpt from his Classic Hydronics seminar, Dan Holohan teaches us about Mark Honeywell’s Heat Generator. In the early days of hot water heating, Mark Honeywell i...

Published on 03/24/2020 3:16 PM by Dan Holohan
Posted in Hot-Water Heating
The First Hot-Water Heating System

 

 Jean Simon Bonnemain created the very first hot-water heating system in Paris in 1777 to heat chickens. In this video, Dan Holohan shares how this system worked and h...

Published on 03/24/2020 3:11 PM by Dan Holohan
Posted in Hot-Water Heating
Steam Traps (Video)

In this excerpt from his Dead Men’s Steam School seminar, Dan Holohan talks about steam traps in steam heating systems. He’ll tell you how steam traps work, how to test s...

Published on 03/24/2020 3:08 PM by Dan Holohan
Posted in Steam Heating