So maybe this is a naive question, but I was thinking about my new therminator the other night and the fact that I need to build a backflush hose for cleaning when I thought, "Why do I need to clean out the coolant side? Beer doesn't touch it, and it's just water anyway."
So why do I? Plenty of stores are selling those hoses for $19, so somebody must be doing something with them, but I'm damned if I can figure it out. It seems like I can just run hot PBW through the wort side in both directions and then just let it drain. As for the coolant side... why bother?