The cleaner your filters, the cleaner the air you breathe. Be sure to replace reusable filters every 6 months and fine filters every 30 days or when either begin to show wear. Use our replacement part finder to ensure you get the appropriate filters for your machine.
View our expansive collection of CPAP filters
We stock disposable and reusable filters for machines new and old. Additional filters such as in-line bacteria filters are also available for added filtration to keep therapy air clean and effective.
How often should you replace your CPAP filters? What is the difference between disposable and reusable filters? We've answered these and other common filter questions below.
What Are CPAP Machine Filters?
CPAP filters are designed to remove dust, mold, and other impurities from the air you breathe as part of your CPAP therapy. There are 3 main types of filters available for CPAP machines: reusable filters, disposable filters, and bacteria filters. Most machines will use both reusable and disposable filters. For CPAP therapy, bacteria filters are optional.
What are Disposable Filters?
Typically made of fine mesh paper, disposable CPAP filters are a very common type of filter. Like the air filter in your home or car, they are designed to improve the quality of the air you breathe and keep harmful toxins out of your body. A disposable filter is exactly what the name sounds like: it should be disposed of and replaced when the filter begins to look discolored, or after a certain period of time. Each machine uses a disposable filter of a slightly different style, so in order to find the right filter for your machine, you'll need to shop by make, model, and brand. CPAP.com has a handy replacement part finder that can help you find the right replacement parts for your specific machine.
What are Reusable Filters?
Reusable Filters are made of foam and can be cleaned and reused. Reusable filters aren't substitutes for disposable filters, meaning you can't use a reusable filter in place of a disposable filter. In fact, some CPAP machines use both reusable and disposable filters so you may need both. Like the name says, reusable filters can be cleaned and reused for around 6 months, or sooner if the foam degrades to the point that it starts to break down. At that point, the reusable filter should be replaced with another reusable filter.
What are Bacteria Filters?
A bacteria filter is self-contained inside a hard plastic bubble and is placed at the end of the hose, in-between the hose and the mask. If you're not using a heated hose, the bacteria filter can go in between the machine air outlet and the hose as well. A bacteria filter removes the smallest irritants and microbes that can still be in your air after running through two different sets of filters. It's disposable and can be discarded and replaced when the filter begins to show signs of discoloration. Bacteria filters are completely optional in CPAP treatment, but many people use them to make sure that the air they're breathing is of the highest quality.
How Often Should I Replace My CPAP Filters?
CPAP filters have varying lifespans and should be changed according to the following replacement schedule:
- Disposable Filters: Should be replaced every 4 weeks or sooner if the filter begins to get discolored.
- Reusable Filters: Should be replaced every 6 months or sooner if the foam begins to degrade.
- Bacteria Filters: They're disposable and should be replaced every 30 days or discarded sooner if the filter begins to look discolored.