Cleaning a CPAP Water Chamber

CPAP Water ChamberThe water chamber is the removable tank that holds the water in your humidifier.

Utilizing a humidifier can make a positive difference in your sleep apnea therapy comfort, and experience. By warming and moistening the air you’re breathing, it assists prevent you from having a dry nose and throat and can help you keep your mouth closed while you sleep.

Humidification helps to enhance comfort and improves compliance.

How Do I Wash and Maintain my CPAP Water Chamber?

Like all of the other components of your sleep apnea machine, your water chamber should be cleaned regularly.


  1. Empty and residual water from the container when you wake up in the morning.
  2. Leave the water container out to dry thoroughly.
  3. Use distilled water to prevent mineral build-up in your water chamber and hoses. While it’s correct to use tap water occasionally, like when traveling, manufacturers recommend using distilled water for optimum usage.

How Often Do I Need to Change My CPAP Water Chamber?

Clean CPAP Water ChamberManufacturers recommend changing a standard water chamber every 6 months.

Many insurance companies follow Medicare guidelines and will authorize a new water chamber this often. This means that if you’re getting a new CPAP supply shipment every 90 days, your shipment should include a new water chamber in every other order. Check with your device provider or contact your insurance company to see what they allow.

The CPT code for a water chamber is A7046.

How Do I Know If I Need to Change My Water Chamber?

The chamber may develop cracks, pitted areas, or discoloration due to minerals in the water and build-up inside the chamber. As the material worsens, cracks may trap bacteria from moisture. If this happens before six months of usage, you should change it.

References and Resources