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 is the speech Professor Engel delivered that day. It's a wonderful story. - Dan Holohan
Here is the original Installation and Operating Instructions and Parts List for The H.B. Smith Company's Oil Fired Cast Iron Hot Water Boilers (No. OHB-13W). This is esti...
The Henry Ford Museum in Dearborn, MI has an interesting hot-water heating system. Take a look at the radiators below. They are from the Shaw-Perkins Manufacturing Compan...
We estimate that this cast-iron boiler catalog from The Peerless Heater Company in Boyertown, PA is from the 1980s or 1990s.