How Often Should I Replace My CPAP Supplies?

Dr. Peters Simple Guidelines for Replacing CPAP Supplies

CPAP machine
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It may seem wasteful to replace your CPAP supplies when the equipment looks perfectly fine, but new equipment helps keep the device clean. 

Your durable medical equipment provider may keep you on schedule for replacement of your supplies, which is very convenient. However, in your effort to become a well-informed patient, it's important to understand the anticipated lifespan of your equipment and how often to swap it out.


If you use continuous positive airway pressure (CPAP) or bilevel to treat your sleep apnea, you may need to replace:

  • the mask
  • headgear
  • chinstrap
  • tubing
  • filters
  • humidifier chamber

Let following be your guide.

When to Replace Your CPAP Mask

Replace your mask every 3 months.

The mask is the harder plastic portion of your interface. Replace the softer plastic cushion insert or pillows that actually touch your skin more often. 

When to Replace Your Mask Cushion and Pillows

Replace the mask cushion or nasal pillows as often as 2 times per month.

This is the part of the mask that actually touches your face. If it is a piece you can separate from the rest of the mask’s harder plastic framework, chances are you will replace it independently. If you have a full-face mask, replace this cushion once per month.

When to Replace Your Headgear

In general, replace headgear every 6 months.

Neoprene is the stretchy material that helps to accommodate the shape of your head to ensure an optimal mask.

As it repeatedly stretches, it may start to give too much and not keep a proper seal. In addition, oils from your skin or hair may also accumulate.

When to Replace Your Chinstrap

Replace your chinstrap every 6 months.

Much like the headgear that keeps the CPAP mask in place, a chinstrap may gradually weaken and become overly stretched.

The Velcro may also become less effective over time. 

When to Replace Your CPAP Tubing

Replace CPAP tubing every 3 months.

Tubing gets dirty over time, with condensation increasing the risk of contaminants that could enter your lungs. Small holes that form as the plastic of the tubing breaks down reduces the treatment's efficacy. 

When to Replace Your Filters

Your CPAP machine may have two types of filters, both of which require regular replacement. Keeping these relatively inexpensive components as clean as possible will ensure the purity of the air you breathe as well as the long-term functionality of your device.

The Respironics machines have a gray foam filter you should rinse often and replace every 6 months. Beneath it, there is a white paper filter you replace every 2 weeks.

The ResMed machines have a white filter you replace every 2 weeks. Some insurance may only replace these monthly. 

When to Replace Your Humidifier Water Chamber

Replace the water tank every 6 months.

If your CPAP has an integrated or attached heated humidifier, clean and occasionally replace the water chamber.

Not using distilled water may lead to further problems with keeping the water reservoir clean. 

When to Replace Your CPAP or Bilevel Device

Typically, insurance will pay to replace the device every 5 years. If you change insurance or pay out of pocket, you may be able to replace the unit sooner.

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