Not a gret idea.+ d' q( |$ i7 c e2 Y6 [0 I4 @
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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. 2 l V M9 g6 S" P( Z% N 0 ? [4 g1 Z" J+ ]Beside,furnace hot water coil is made of metal. Some of it will come into the hot water.