Can the pipes in a hot tub freeze when the tub is drained and not running?

Yes, unless you "winterize" it by blowing the pipes free of water before the cold sets in. You should research exactly how to do this on a hot tub website like the one below

First answer by Trucker11. Last edit by Trucker11. Contributor trust: 33 [recommend contributor]. Question popularity: 1 [recommend question]