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.
In this excerpt from his Dead Men’s Steam School seminar, Dan Holohan shares his knowledge about near-boiler piping in steam heating systems. Proper piping around the boi...
A few years ago, an engineer who works with older New York City buildings started to email me with good questions, mostly about steam heating. I’ve enjoyed hearing from h...
Many old steam-heating systems are oversized as a result of the Spanish Influenza pandemic of 1918-19. The flu killed 50 million people worldwide. People became deathly a...
Circular radiators date back to the early 1900s. They were assembled as one whole radiator or as halves for the purpose of encircling columns. When they were in halves, e...
In this video, Dan Holohan tells us about indirect heating. It is a method of heating that the old-timers used to warm fresh air before it entered a building. They placed...
In this video, Dan Holohan explains steam boiler ratings. When you look at a boiler manufacturer’s catalog, you’re going to see Input, D.O.E. Heating Capacity (Gross), an...
In this video, Dan Holohan shares why many old steam-heating systems are oversized. The Spanish Influenza pandemic of 1918-19 had a huge impact on the development of hous...
Dan Holohan shares his knowledge about the first safe and successful steam radiator for house heating. Steven Gold patented his "mattress" radiator on October 3, 1854. It...
Our daughter, Erin, bought our business in 2016 when Marianne and I retired. Erin is of an age where she is more comfortable with technology than I am, and she was the br...
Here is some information about the GE Atomizing Boiler. The first part of this document comes from the 1960 Audel Oil Burner Guide, written by Frank Graham. The second pa...
