Your sleep doctor should have advised you about regular change of tubing every 3-6 months and new filters monthly plus water change daily and rinsing the tubing and mask every few day’s. These pieces of equipment need to be clean so that the air you breathe is clean!

I would direct you to the manufacturer's website, which has an excellent description and video.

*Daily:*

- Mask cushion
- Air tubing
- Humidifier water tub

*Weekly:*

- Mask frame system
- Mask headgear
- Distilled water should be used in the CPAP machine.

https://www.resmed.com/en-us/sleep-apnea/cpap-parts-support/cleaning-cpap-equipment/