S9 and AirSense 10 CPAP Filters

If you use a ResMed S9 or AirSense 10 machine, the small foam filter tucked into the side of your device is doing quiet but important work every night — trapping dust, pollen, and airborne particles before they reach your airway. This collection stocks replacement filters sized specifically for those two platforms, so you get a proper fit without guessing at dimensions or trimming generic pads.

The filters here are Sunset Healthcare Hypoallergenic Filters (models CF2107HA and CF2107), measuring 1-3/8 x 2-1/4 inches to match the S9 and AirSense 10 filter compartment. The hypoallergenic construction is worth noting if you're sensitive to dust or seasonal allergens: these are denser than standard disposable filters, capturing finer particles that a basic foam insert lets through. That extra filtration matters most for anyone with allergies, asthma, or a home with pets.

How often should you change them?

As a general rule, disposable CPAP filters like these should be replaced about once a month, or sooner if you notice the filter looks gray, dusty, or discolored. Homes with pets, smoke, or high dust levels usually need more frequent changes. Because these are single-use disposables, there's no washing involved — you simply slide out the old one and drop in a fresh filter, which keeps airflow strong and your machine's motor protected. Buying a supply ahead of time means you're never running your equipment on a clogged filter.

Keeping a stock on hand is the simplest way to protect both your breathing and the longevity of your CPAP. Fresh filtration reduces the particulate load on the device and helps maintain the clean, consistent air pressure the therapy depends on. Choose the count and model that fits your machine and your replacement schedule, and you'll always have a clean filter ready when it's time to swap.

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S9 and AirSense 10

S9 and AirSense 10 CPAP Filters