Not a gret idea. ?- a0 {0 ]: @( e9 p8 ]8 k& o i/ K
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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. n3 Z! F t! e) v) C# G' `! @ / V( f5 F% C$ G" hBeside,furnace hot water coil is made of metal. Some of it will come into the hot water.