AirMini™ HumidX™ F20



Masks Size Guide

HumidX™ F20 provides waterless humidification for F20 series full face masks with AirMini . HumidX™ F20 are small heat and moisture exchangers (HME) designed to provide comfortable and effective humidification.

Compatible with ResMed AirFit™ F20 and ResMed AirTouch™ F20 Full Face Masks. HumidX F20 waterless humidification is not available for AirFit F30.

Additional Info

Heat and moisture captured during an exhale is stored within the HME’s tiny paper ridges. During an inhale, this heat and moisture are released to humidify the air breathe in. 

  • ​Small, lightweight and easy to use
  • ​No washing required
  • ​Usable for up to 30 days after opening


Related Items

Sizing Guide For Select CPAP Masks

Select CPAP Masks have sizing guide to help you select a size. 

Click on the mask name below to view, print and measure with their size guide.

Other masks are packaged as fitpacks with all size cushions included and do not have size guides available. 

Nasal Masks

Full Face Masks

Other helpful resources:

How To Select A CPAP Mask – Help Centre - All the help you need...instantly! (

What Size CPAP Mask Do I Buy? – Help Centre - All the help you need...instantly! (