If you mean to stop using your Chillwell Portable AC for quite a while, you ought to cleanse the unit and grant all that to dry before taking care of. If you don't, you could end up with structure and other obnoxious fragrances.To stay aware of your ChillWell Minimal unit and keep it running preferably, you'll need to clean the unit and the cartridge one time every week. you can hand wash it with cleaning agent and warm water.