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 document contains the story of Herman W. Nelson, founder of the Herman Nelson Corporation and the Moline Heating System (a vacuum-vapor heating system).
This document from 1910 outlines the Kriebel System of Vapor-Vacuum Heating. Thank you to our forum member Reggi for sharing this resource with us.
This excerpt from Heating and Ventilating Magazine, 1911, shows J. J. Wilson's wizard valve fitting for steam heating systems.
This is the patent for J.J. Wilson's Fitting for Steam Radiators from September 14, 1909.
This document contain an ad from Domestic Engineering (circa 1901) featuring the Trane Mercury Seal which was attached to an old steam heating system or to an old vapor p...
This document contains the Trane Steam Heating System Patent circa 1901. This system used mercury to produce vacuum.
On June 11, 1889, the G.M. Davis Regulator Company of Chicago, Illinois patented the Victor No. 2, an automatic air vent for steam radiators. It worked by the expansion o...
This is a speech that E. N. McDonnell, founder of McDonnell & Miller, made on May 29, 1940 to the Heating & Piping Contractors National Association in defense of steam he...
A Practical Manual of Steam and Hot-Water Heating was written by Edward Richmond Pierce in 1911. This will give you a glimpse into what heating was like during that time ...
William C. Wolfe's circa-1879 patent for a water feeder shows an invention that is remarkable simple and fully automatic. It's probably one of the earliest feeders to app...