Trying to decide whether to install a ductless A/C system versus just using a portable a/c unit - the kind that vents out the window with a hose. The ductless system with the install is @ 4 - 5x more expensive than the portable unit plus a lot more annual maintenance. I hear that portable units are easy to use but are noisy. I've seen mixed reviews. Looking to cool a small summer cottage near the beach. I don't know anyone who has used a portable unit so can't compare with the full system. The portable unit would have to be large. I know that I don't want window a/c units. Sometimes we rent out this cottage and sometimes we don't. For the times we do rent it out we want the least hassle option. For the times that we don't we want to make sure that the a/c isn't running when no one is there. If cost was no object then I wouldn't hesitate and go with the ductless system but I'm trying to figure out if a portable unit is worth the savings or if it's too much hassle.