How and when to clean my humidifier?

Regular maintenance and cleaning will keep your humidifier in good working order and help you to enjoy a fresher therapy experience. Here are the answers to common questions about keeping humidifiers clean.

How often should I clean the water tub of my therapy device?


Our humidifier user guide contains instructions on cleaning your specific type of device and its components. You can download a copy of the user guide from the support page of your humidifier. 

In general, you should wash the water tub every day in warm water, using a mild detergent, then rinse it thoroughly with clean water and leave it to dry away from direct sunlight. Every month, you should inspect the water tub for wear and deterioration and replace the water tub if any component is cracked, cloudy or pitted. 

Please do not use any of the following to clean your humidifier as these solutions may cause damage and reduce the life of the product: 

  • Bleach, chlorine-, alcohol- or ammonia-based solutions
  • Moisturising, antibacterial or glycerine based soaps
  • Water softening and unapproved descaling agents 

Learn more about the usage of Ozone devices with ResMed products.

Tips: how should I clean my humidifier?  

You should refer to your machine user guide for detailed instructions on cleaning your humidifier. For your convenience, here are the cleaning instructions for ResMed’s heated humidifier:

Every week

Peel the flip lid seal from the flip lid and wash it in warm water using a mild detergent.

Wipe the exterior of the humidifier with a damp cloth and mild detergent.

Wipe the exterior of the device with a dry cloth.

Please note that the disassembled tub lid, plate and base may also be washed in a dishwasher on the delicate or glassware cycle (top shelf only). If you notice clean white powder deposits in the water tub, you can clean these using a solution of one part household vinegar to 10 parts water.

How and how often should I clean my ClimateLine or SlimLine tubing?


Please refer to your tubing user guide for detailed instructions on cleaning. In general, every day, you should remove the air tubing by pulling on the finger grips on the cuff. Hang the tubing in a clean, dry place until its next use.

Please note:

  • Do not hang the air tubing in direct sunlight as it may harden over time and eventually crack.
  • Do not wash the air tubing in a washing machine or dishwasher.

Every week, you should remove the air tubing from your therapy device and mask by pulling on the finger grips on the cuff, then wash the air tubing in warm water using mild detergent. Rinse the tubing thoroughly, hang it up in a clean, dry place, and allow it to dry. Reconnect the air tubing to the air outlet and mask next time you use your device.

If you have more questions about cleaning your humidifier and accessories, please contact your care provider or equipment supplier.

Starting your CPAP therapy at home

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You’ve recently been diagnosed with sleep apnoea; we’re here to help you get started. Learn more about this therapy, including how to set up your equipment and monitor your results. You can also watch other CPAP users share their experiences.

Simple steps to enjoy a better PAP experience

Do you wish PAP therapy was easier or more comfortable? Do you have questions about cleaning and maintaining your equipment? Our free ebook is full of ideas and advice to help you enjoy a more comfortable PAP experience.

Making the most of your CPAP therapy
How can you make your treatment more comfortable?
Maintaining your PAP equipment

Keep exploring

A clean CPAP mask will last longer and should provide a better seal. It will also give you a fresher, more comfortable therapy experience.


To enjoy comfortable, good quality therapy, it’s important to replace your mask and its components regularly.


Replacing the equipment for your ResMed CPAP, APAP or Bilevel solution is easy and helps ensure effective sleep apnoea therapy.