Reason for condensation under mask? Help please

General Discussion on any topic relating to CPAP and/or Sleep Apnea.
1speechpick
Posts: 126
Joined: Wed Jun 09, 2021 12:16 pm

Reason for condensation under mask? Help please

Post by 1speechpick » Tue Jun 29, 2021 8:12 am

Last night I tried the Resmed Airfit N20 nasal (cup) mask. I found it extremely comfortable, however, I woke up with a significant amount of water on my nose this morning. I also have Resmed Airsense for Her, pressure 6, humidity 5, tube temp 76 degrees Fahrenheit. There didn't seem to be significant amount of water in the tube.

What would cause the condensation on my face (under the mask)?
ResMed AirSense 10 For Her with humidifier and heated hose
Resmed Airfit N20


"The best view comes after the hardest climb"

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Dog Slobber
Posts: 2929
Joined: Thu Feb 15, 2018 2:05 pm
Location: Ontario, Canada

Re: Reason for condensation under mask? Help please

Post by Dog Slobber » Tue Jun 29, 2021 8:38 am

  1. The humid air is condensing within the mask. Condensation forms because warm humid air comes into contact with cooler surfaces. The surface of the mask is cooler
  2. The condensation may be coming from your exhaled breath.
  • Reduce the humidity
  • Increase hose temperature
  • Increase ambient temperature of bedroom
  • Insulate the N20 mask with a cover

1speechpick
Posts: 126
Joined: Wed Jun 09, 2021 12:16 pm

Re: Reason for condensation under mask? Help please

Post by 1speechpick » Tue Jun 29, 2021 9:56 am

Dog Slobber wrote:
Tue Jun 29, 2021 8:38 am
  1. The humid air is condensing within the mask. Condensation forms because warm humid air comes into contact with cooler surfaces. The surface of the mask is cooler
  2. The condensation may be coming from your exhaled breath.
  • Reduce the humidity
  • Increase hose temperature
  • Increase ambient temperature of bedroom
  • Insulate the N20 mask with a cover
Thank you for your suggestions! It's greatly appreciated!
ResMed AirSense 10 For Her with humidifier and heated hose
Resmed Airfit N20


"The best view comes after the hardest climb"