Why Does my Mask and Tube Have Water in It?

As the winter months approach in Australia, it's time to prepare for the cooler temperatures and the challenges they bring to your CPAP therapy. One common issue many CPAP users face during this time is excess condensation which causes a loud gurgling sound in the tubing and excess moisture in your mask. But fear not! We’re here to explore why condensation occurs and provide some valuable tips to help you overcome this challenge and ensure a comfortable and effective sleep apnea therapy experience.

Understanding Condensation

Condensation in your CPAP tubing can occur when the warm, humid air inside your CPAP machine humidifier chamber and tube becomes affected by the cooler surrounding air outside. This temperature difference causes the moisture in the air to condense into water droplets inside the tube. This may lead to bothersome gurgling sounds, uncomfortable therapy, and potential mask leakage.
So, how can you combat this issue and enjoy uninterrupted, effective therapy during the winter months? Let's dive into some practical strategies:

Adjusting CPAP Humidity and Tube Temperature Settings

Different CPAP machines offer various settings to help you customize your therapy experience. To combat condensation, it's important to adjust the humidity and tube temperature settings according to your specific machine's instructions. These settings can significantly impact the amount of condensation that forms in your tubing. 
The humidifier creates ‘wet heat’. The higher the ‘humidifier’ setting in your device is, the warmer the heater plate gets. You should always have fresh water in your humidifier chamber and the heater plate creates humidity above the water level which is then picked up by air that passes over the water and carries the humid air through your CPAP tube and in to your mask.
The heated tube warms up the air giving it more chance to maintain vapour. The higher the temperature or setting of your heated tube, the warmer the wire coil gets that is wrapped around the tube. The role of the heated tube is to minimize the excess condensation in your tube and mask by keeping the air warm in your tube and therefore protecting humid air from the cold external air that can cause condensation droplets inside the tube.

Here's our suggestion on what to set your machine's humidification to this winter.
*These settings are a guide, we recommend adjusting the humidity level in increments of 1 until you find your optimal setting. Your climate and personal preference may require slightly different settings to what is below.


Tube Temperature



AirSense 10


Level 2

You will need to start by changing the climate control to manual in the My Options menu. 
If after changing these settings you are still too wet, turn the humidity level down. If you are too dry, change humidity to setting 3.



Level 5

If still too moist, reduce to 2. If you are too dry, go up to level 4

iDisc or iBreeze

Level 3

Level 2

Adjust humidity level accordingly if still feeling to wet or dry

Optimal Room Temperature:

Maintaining a comfortable room temperature can also help minimize condensation. Keep your sleeping environment between 18 to 21 degrees Celsius. Avoid excessively low temperatures, as they can worsen condensation issues. 

Tube Positioning

Ensure your tubing is positioned correctly to allow any condensation to flow back into the humidifier chamber or away from your mask. Elevating the tubing slightly by placing your CPAP machine at ground level can assist in preventing the build-up of excess moisture.

Regular Cleaning and Maintenance

Winter or not, it's essential to maintain good hygiene practices for your CPAP equipment. Clean your mask, tubing, and humidifier chamber regularly to prevent the accumulation of mould, bacteria, and other contaminants that can contribute to condensation issues. We recommend giving your setup a full clean at least once per week. Check our YouTube video (and don’t forget to subscribe to the channel for more tips and hints)

Winter months may bring a unique set of challenges for CPAP users in Australia, but with a little knowledge and preparation, you can overcome the issue of condensation in your CPAP tubing. By adjusting humidity and tube temperature settings, maintaining a comfortable room temperature, ensuring proper tube positioning, and practicing regular cleaning and maintenance, you can enjoy uninterrupted and effective sleep apnea therapy.
Remember, for specific instructions on adjusting the humidity and tube temperature settings for your CPAP machine, refer to the user manual or reach out to your local CPAP Direct store. Don't let condensation dampen your CPAP experience this winter; take control and sleep soundly!

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