The Mystery of the Ducts To Nowhere

(Or “Why A Duct?”, with a tip o’ the hat to the Marx Bros) This house has ancient, single-pipe steam heating. From what I’ve been able to determine from digging in these walls over the past seven years is that it’s always had steam heating. Nothing interesting there. What’s baffling is why the house also has ancient metal air ducting buried inside the walls. I discovered this shortly after I moved here when I ripped down the basement ceiling and found three vertical ducts to nowhere. Over the past hundred years, various plumbers and electricians had used them for service …

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