First I think the Artesian dealer is blowing smoke up somewhere, sounds like he is willing to say anything to get a sale. If he is going to do that get it writing, make sure he has been is business for quite some time and find out what are the exclusive. If he has such a warranty through him he should already have something written up for you to look at if not he does not I would not trust him.
As far as ozonator I feel the solid state ones like Marquis offers are the way to go. They require 0 maintenance and will last for years. Ballast fired ones will only last about 9000 hours and CD ones require maintenance to have the chip cleaned or replaced annually.
Gary