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Hoffman Specialty's Director of Engineering, Ferdinand Jehle, wrote these four interesting "Engineering News" letters in 1946.

This brochure about Honeywell Control Systems for Radiant Panel Heating from the Minneapolis-Honeywell Regulator Company outlines their approach to radiant heating system...

This 1951 Guide from the Institute of Boiler and Radiation Manufacturers made radiant heating systems pretty easy to understand and install during the early years.

These were the first mass-produced homes. Built after World War II, they all had hydronic radiant heating systems. Note the way they laid the tubing right on the ground, ...

Thanks to Rick Rolston, who provided this rare glimpse into the inner workings of the first radiant systems in the Levitt homes. Now you know where the pipes are! You'll ...

This document about the Limitations in Heat Output from Radiant Panels is from LaTart and Hutchinson of the Revere Brass and Copper Company, written in January 1949. Than...

This fascinating article about plastic pipe and radiant panel heating appeared in Domestic Engineering magazine during February of 1957. Shades of things to come!

On November 28, 1990, I heard Professor Thomas Engel, the inventor of PEX plastic, speak in Sweden. The occasion was the Wirsbo-PEX 10 Times Around the World celebration....

This document contains a series of interesting articles by Mills and LaTart of Revere Copper and Brass about radiant heat with copper tubing. It is not dated, but is most...

The Copper & Brass Research Association published this brochure in 1949. It tells the radiant heating story very well, and the installation photos are well worth a look.