1. "Rises", because it is intransitive. "Raise" is a transitive verb and needs an object -- e.g. "I raise the lantern".
2. No, because the "and" conjoins two finite verbs -- "sells" and "is" -- as you have it, but it wouldn't hurt to repeat "who" and have "and" conjoin the two "who"s instead.
3. I've no idea what a split type AC is, but I do understand what you mean by "window unit air conditioner". I would call it a "window air conditioner".