CPAP Humidifier tank cleaning

by Bernie Seward
(Denver, CO)

Is it really necessary to drain and clean the humidifier tank daily? I always have leftover distilled water in the tank.


At diagnosis, most patients are good about following the guidelines for equipment care:

  • change filters often,

  • rinse mask daily,

  • wash mask a few times each week,

  • only use distilled water,

  • empty humidification chamber of any unused water daily,

  • thoroughly clean and disinfect water chamber a few times weekly.

Bottom's healthier to dump any unused water out and let the chamber air-dry daily, even if you consider it's a waste of water.

However, it's no problem to clean the humidifier chamber once a weak. You can soak the chamber in a 3/1 warm water to white vinegar solution for 20 minutes, then soak it in soapy water (Ivory) for 15 minutes and then I let it air dry.

I hope it helps. Don't be afraid to comment back.

Remy Thierry
Founder of Sleep Apnea Guide

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Jul 01, 2010
by: Bernie Seward

Thanks, Remy. This procedure makes much more sense, particularly in a dry climate like we have here in Denver.

Jan 26, 2019
caring for face mask
by: Anonymous

I have the full face mask with humidifier, and also have the so clean machine, so am I still needing to clean face mask by hand and hose ? if so how often ?

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