What water should I use?

Use distilled water

All manufacturers recommend using Distilled Water because it contains no impurities.


Do not use tap water

Whilst usually safe to drink, tap water can contain chemicals and particles that will settle on the bottom of the water chamber. If not cleaned regularly, this sediment will be hard to remove and will cause premature aging of the metal heating plate. 

We recommend rinsing every morning and not leaving water in the tank during the day. If you don’t clean the water tank regularly sediment build-up will cause corrosion and ultimately the water tank will begin to leak.

In terms of the best to worst water to use, please see below;

  • Distilled Water (Best and recommended by all manufacturers) - Can usually be purchased from Big W and Autobahn
  • Demineralised water (not as pure as distilled water, but slightly better than the other options below)
  • Filtered Water (safe to drink - but may still contain some minerals which can reduce the life of the water tank)
  • Bottled Water (safe to drink - but can contain minerals which can reduce the life of the water tank)
  • Tap water that has boiled and then left to cool down (not ideal, but convenient and better than plain tap water)
  • Tap Water (not recommended) 

We understand that tap water is cheap and convenient, but it is not recommended.

Please visit our popular blog post on what kind of water should I be using in my cpap machine for more details.


Wash your water tank, mask, hose and accessories at least once per week in warm soapy water.

If you are not using distilled water, clean the water tank daily with warm soapy water and expect that the water tank will not last as long before needing to be replaced.

If you have not been using distilled water, or have not cleaned the water tank weekly, you will probably experience a build-up of sediment on the bottom of the water tank. In this case, you could try using a 10% solution of vinegar and water to try and dissolve the sediment.

Please visit our popular blog post on Cleaning Tips for more details.

Last updated: 30th May 2022