For a CPAP machine to work at its best, you need heat and humidity in the mask and tubes to match the heat and humidity outside of the mask and tubes. Rainout can occur if you don't.

By Matthew Rozsa Staff Writer Published December 13, 2021 2:55PM (EST) Man sleeping with cpap mask because of obstructive sleep apnea (Getty Images/no_limit_pictures) Facebook X Reddit Email ...

This accessory (available in three options called Resmed HumidX, HumidX Plus, and HumidX F20) is designed to work with specific Resmed tubing and masks to ensure that users get the best experience ...