Yeah, it's not in the books, but it'd be darn useful for people of the First Age who get stuck in the South for extended periods.  I would actually figure it's far more common than one would expect, or at least used to be, but the Age of Sorrows doesn't exactly make for lots of epic trinkets.<br/><br/>Some<del>Unclean</del>Twilight made it back in the First Age, and it doesn't need maintenance, but it does need to be attuned.<br/><br/>You can think of it as an air conditioner except that it takes up a single room like a space heater, and makes that one room way too cold, so the whole room is basically a refrigerator.<br/><br/>It's probably also the size of an air conditioner, and unless you either own Mela's Respite or want to steal it, it's not going to be useful to the party.  Also, they'd notice if it was stolen because the whole temperature of the place would change pretty fast.