At Duux we guarantee quality and performance. In the unlikely event of a problem with your mobile air conditioner, we are ready to solve this for you immediately. In many cases, it can be repaired quickly and easily. But the last thing you want is to have to lose your air conditioner for a while for repair or return. With the Duux Stay Cool guarantee, we will personally come to your home to repair or replace your air conditioner! And that within 48 hours*.