PorQueNoTuMama t1_iultgw6 wrote
Reply to comment by angstt in TIL that Koreans have had heated floor technology since at least 1,000 B.C.E. by Nice-Violinist-6395
Not from the traditional ondol. That only started to happen when coal briquettes replaced wood for convenience.
The system itself is fine and still in use in modern housing, but now with heated water underfloor pipes.
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