Take a stroll through HVAC history in our Heating Museum. This section of our website preserves history and answers that so-important question: What the heck is that thing? Whenever you run across anything unusual, chances are you’ll find the old literature about it right here.
This book from The Honeywell Heating Specialty Co., issued around 1910, contains complete instructions for the system that changed the way the Dead Men did hot-water heat...
Kriebel was very involved with steam heating and they made a device that worked in a similar way to Honeywell's Heat Generator. Thanks to Gerry Gill for finding this pate...
In a gravity hot water system, the hottest water is near the top of the horizontal main and tends to travel first to the upper-floor radiators. Mr. Honeywell, in 1909, pa...
This valve, patented in 1907, gave the people installing hot-water heat a way to compete with the people who were installing one-pipe steam. The Unique valve allowed gave...
By using a pot of mercury and a submerged pipe, this device separated the water in the system from the water in the expansion tank. Honeywell called it the Heat Generator...
The Intensifier, invented by W.C. McKeown, does a job similar to the one performed by Honeywell's Heat Generator. Thanks to Steve Pajek for finding this patent.
Here is an interesting article from Western Plumbing and Heating Journal, April 1937, and a real call to arms!
Here is a patent issued to August Kehm for his tee fitting, later used by Bell & Gossett for their Monoflo. Thanks to Gerry Gill for the research, and for finding the pat...
Thanks to Gerry Gill for finding Oliver Schlemmer's patent for the O-S fitting, which made one-pipe hot water heating possible.
Edward Parker received this patent in 1911 for a different way to pipe a hot water radiator. Thanks to Steve Pajek for finding it and sharing it with us.