Early Humidifier

Published on June 11, 2014 | Comments

Here is a circa-1932 patent for a humidifier that also cleaned the air in the room. Thanks to Gerry Gill for finding and sharing this patent with us.

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Heating Museum

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Perfex Series 155 Magic Dial Thermostat

Here are photos of a circa-1944 Perfex Series 155 Magic Dial Thermostat, as well as the instruction manual.

Published on 10/21/2024 4:54 PM

Posted in Heating Museum

The American Society of Heating and Ventilating Engineers Guide (1929) - Hot Water Heating Systems and Piping

This chapter on hot water heating systems and piping was prepared by Professor F.E. Giesecke (Director of Texas Engineering Experiment Station in TX) for the The American...

Published on 07/17/2024 3:14 PM

Posted in Heating Museum

Jarecki Radiators (1890)

Here are ratings for the Erie radiator from Jarecki Mfg Co Ltd. They were based in Erie, PA and their radiators appeared in issues of Domestic Engineering in the 1890s.

Published on 04/22/2024 4:07 PM

Posted in Heating Museum

Early Humidifier

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