PorQueNoTuMama t1_iultmzo wrote
Reply to comment by LostMyCleaver in TIL that Koreans have had heated floor technology since at least 1,000 B.C.E. by Nice-Violinist-6395
Not the build, but the fuel used. In the 50's onwards coal briquettes were used for convenience but they had the tendency to burn poorly and produce carbon monoxide.
Traditional wood burning and modern underwater pipe systems are perfectly fine.
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