At Duux , we guarantee quality and performance. In the unlikely event that a problem arises with your mobile air conditioner, we are ready to solve it for you immediately. In many cases, it can be repaired quickly and easily. But the last thing you want is to lose your air conditioner for a while for repair or return. With the Duux Stay Cool warranty, we will personally come to your home to repair or replace your air conditioner! All within 72 hours*.