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.
1927 Proposal for a Mouat Vapor Heating System
Thanks to Gerry Gill for sharing this Mouat Vapor Heating System proposal from the early days of steam heating. Note the nine-ounce setting on the relief valve. You don't need high pressure to heat a building.
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