Gurgling in a CPAP hose or droplets in the mask can come from condensation, often called rainout. Moist air cools as it travels through the tubing and some water vapour becomes liquid. A cool bedroom or air-conditioning blowing on the hose can make this more noticeable.
Condensation is not the only explanation. An overfilled chamber, a tilted device or water spilled during moving can also send liquid into the system. Check what happened before assuming the humidity setting is the cause.
Check the setup first
Follow the manual to stop treatment and disconnect or drain affected parts. Keep liquid away from the machine's electrical components. If water has entered the machine, disconnect power when safe and contact the supplier before using it again; do not try to dry its interior by running it.
Check the chamber's maximum fill line and confirm that the tank and seals are seated correctly. Place the device on a stable, level surface in the position required by its instructions. Keep air inlets and vents clear. Empty the chamber before transporting it.
Reduce cooling without improvising
If the device has approved heated tubing, its user controls may help keep moisture from condensing. Check the exact model's instructions for the relationship between tube temperature and humidity. If permitted, make small comfort adjustments and observe the result; the highest settings are not automatically best.
Keep the hose away from a cold draught and route it so it does not pull on the mask. Use a tube cover only if compatible with the system. Do not wrap the machine, block vents or apply an improvised heater to the tubing.
Lowering humidity may reduce rainout but can worsen dryness for some users. The aim is comfortable treatment with a dry circuit, not simply the lowest possible humidity.
If it keeps happening
Ask the provider to check the chamber, seals, tubing and compatible climate controls. Describe whether the water appears after an air-conditioning change, only near the mask or after refilling. Persistent symptoms or recurrent water despite correct setup need review rather than repeated trial-and-error changes to prescribed therapy.
Related reading: Heated CPAP tubing: when it may help