Not a gret idea.- k L" E6 `0 r3 P& O& u$ ]4 w
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Hot water has went through all your home's internal pipes whereas cold water comes "direct" from your local reservoir. Which should be pretty safe. $ M3 {9 F0 ^* p" [; x8 ^7 Z , _8 a8 |; W% U% u1 }; v9 DBeside,furnace hot water coil is made of metal. Some of it will come into the hot water.