Please remember to only use distilled water. In a pinch, you can use bottled water however water that is not distilled usually contains a higher mineral content, especially tap water. These minerals can build up in your humidifier chamber and also be transported into the CPAP air that you breathe which can cause irritation of the airway. So as long as you're using distilled water routinely, using tapwater or bottled water in a pinch is just fine. If you're in a hotel or in a city where the water seems extremely chlorinated you may want to opt for purchased bottled water only due to the smell and that the chlorine might be irritating to your airway.

We recommend that you dump the water out of your humidifier each morning, or if you are using the Soclean device you can keep the water in the chamber and sanitize it. If not using the Soclean sanitizer, use fresh water each day and wash your chamber in the sink with warm soapy water about once per week. Do not use any harsh detergents chemicals, bleaches, or ammonia. You can use a very mild soap such as Ivory soap, or four parts water and one part vinegar. Make sure you rinse the chamber thoroughly and dry it upside down on a soft clean towel.