Blowing out water lines
I've always cleared my water lines in the fall by blowing compressed air through the city water inlet. No problems in eight or nine years. However, after seeing this diagram: I realized I ...
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Interesting question as I have had the same one. I have owned our TT for three winters now. First winter was right after we bought it in the fall after camping season and the dealer flushed the plumbing with antifreeze. The next winter I just blew out the lines with air just as OP describes, but I had the same thought as the OP so I ran the pump for a few seconds with an empty fresh water tank. My thought was that this would purge any water out of the pump. Last fall I went ahead and installed a bypass kit on the pump inlet so I could pump RV antifreeze through and that's what I did for this winter. But I still wonder if the anti freeze is worth the little bit of extra effort that it takes.
