IF you have them--hard to drain icemaker/washing machine. IF you trust the mfg process to have all lines set to gravity drain, then just drain up and try it one winter.
But you are correct--an empty line won't freeze and break...
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2016 Tiffin 40 QBH
2015 38RSSA, traded
2005 TK3 #1869, 10 yrs of memories,
2017 F450 KR--one more Ford is it
2009 F450 4x4-died; 2010 F450-retired
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