There aren't a lot of places around where I live so that you can have a propane tank filled.  Finding Blue Rhino tank exchanges takes care of those issues. If your tank starts to get old, leaks, or whatever, then Blue Rhino takes care of that.  You don't always get a brand new tank, but they do give you a  good, tested tank.  That's a good bit of peace of mind you can carry with you.