Which Came First: Steam or Hot-Water Heating?
Mr. Alfred G. King, it’s so good to hear your voice, even though you’ve been dead for quite some time. Thank you, sir.
Heating Museum Help Topics
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.
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Recent Articles in Heating Museum
G.M. Davis Air Valve Patent (1889)
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...
Clogston Steam Boiler and Radiator Patent
Here is a very old patent for T.S. Clogston's Cast Iron Sectional Steam Boiler and Radiator.
Ratings for Radiators with Corrugated, Ringed, and Plain Surfaces
This is an excerpt from Rolla Carpenter's "Heating & Ventilating Buildings" with a table about Experiments on Different Steam-Heated Surfaces and Different Materials (Wro...
Weil-McLain CGM 7 Ignition Essex Gas Controls (circa 1981)
Here are the installation and operation instructions for Weil-McLain CGM 7 Ignition Essex Gas Controls (circa 1981)
Weil-McLain P-CG and CGM Gas-Fired Boilers, Series 7 (circa 1981)
This is the installation manual for Weil-McLain P-CG and CGM Gas-Fired Boilers, Series 7 (circa 1981).
Emissive Tests of Paints for Decreasing or Increasing Heat Radiation from Surfaces
This document, published in 1924 by the Department of Commerce Bureau of Standards, contains information about Emissive Tests of Paints for Decreasing or Increasing Heat ...
Monitor Bi-Loop Hot Water Radiators
Monitor Bi-Loop Hot Water Radiators are partly filled with water which is heated by steam within the radiator, thereby eliminating the large volume of water to be circula...
No. 540 Heat Losses From Direct Radiation
This is an excerpt from Transactions of the Society of Heating and Ventilation Engineers from 1920. "It is the purpose of this article to bring together all of the data w...
An Early History of Comfort Heating
Here is a superb account of the early history of comfort heating, written by our friend Bern Nagengast for The Air Conditioning, Heating and Refrigeration NEWS.