Since a lot of you have seasonal places, I figured this would be a good place to ask about winterizing plumbing. I built a full bathroom in my barn, which is very handy, but it does get below freezing in there during the winter. It was 29 in the barn the other day. Once we live here full-time, I'll probably just drain the pipes for the first cold snap, and leave the water off until spring.

Now for the questions-

Should I try to drain the PEX pipes? When I shut the water off and open the faucets, most of the water remains trapped in the piping. I know PEX can tolerate some freezing, but wouldn't it be better to purge the water out? I thought about making an adapter to go on the work sink faucet so I could use (low) pressure air to force the water out.