Bought a leftover 2019 Columbus 383fb in Dec 2020. Unit was delivered to our permanent campsite 6/3/21. Unit was paid infull 12/20. During the sales period I mentioned we would not be bringing the unit back for service once they delivered it. The salesman thought we could work something out if it was necessary. AC leaked Thru return vent, improperly seated! User's recommendation: Read above, they won’t even answer their phone and are artists at passing the buck!