Should I open or close my crawl space vents during the winter.

I live in west NC, so it will most likely be below freezing most nights throughout the winter. I come from FL and am not used to this. I just don't want mey water line freezing up.

Thanks!

Craig

Hey Craig and greetings from Sarasota,

I'm glad it's you and not me that's moving up North for the winter.
Close up the crawl space and consider insulating any exposed pipes.
Good luck and stay warm. Tom