DreamStation Humidifier & Rainout — Fix Dry Mouth and Condensation

Hello. If your Philips DreamStation is leaving you with dry mouth or water droplets in your mask, here is how to fix both problems. Problem 1: Dry Mouth. Dry mouth with a DreamStation typically means either the humidity is too low or air is escaping through your mouth before reaching your lungs. Step 1: Increase the humidity setting. On DreamStation 1, use the + and - buttons on the humidifier panel or navigate the touchscreen to the Humidifier settings. Increase humidity from the default level of 3 to a level between 4 and 5. Try one increment per night. Step 2: On DreamStation 2 — use the Heated Tube Humidity mode. The DreamStation 2 uses a sealed, integrated humidifier with no removable water chamber. Humidity and tube temperature are adjusted together through the DreamStation 2 screen. Set the tube temperature to 80°F and humidity to 4 or 5 as a starting point. Step 3: Add a chin strap if you breathe through your mouth. Mouth breathing bypasses your humidifier entirely — air escapes before it can moisturize your airway. A chin strap holds your mouth closed. If mouth breathing is consistent, a full face mask may be a better solution. Problem 2: Rainout — Water in Tube or Mask. Step 4: On DreamStation 1, lower the humidity level by 1 increment. Too much moisture combined with cool bedroom air condenses in the tube. Step 5: Keep the machine lower than the mask level. If the machine sits higher than your face, condensed water can drain into the mask. Move the machine to the floor or a bedside table below the level of your pillow. Step 6: Route your tube under your blanket. Keeping the heated tube warm prevents condensation. If you use a DreamStation with a heated tube, make sure the tube is not exposed to cold air from a fan or air conditioner. Step 7: For DreamStation 1 — empty and rinse the water chamber each morning. Use only distilled water. Mineral deposits from tap water clog the humidifier chamber and reduce humidity output. Still need help? Find a CPAP provider near you →