ResMed AirSense 11 CPAP Filter - Standard

The genuine ResMed Standard Filter for AirSense 11 and AirCurve 11 machines. The default filter ResMed supplies with these devices — captures dust, pollen, and airborne particles. Available in 2, 12, and 50-pack. Not compatible with AirSense 10.

The ResMed AirSense 11 Standard Filter is the genuine disposable replacement filter for the ResMed AirSense 11 CPAP and AirCurve 11 BiLevel machines. It's the default filter ResMed supplies with these devices from new — capturing dust, pollen, and other large airborne particles before they reach your airway. Suitable for most users in standard indoor environments. Available in 2-pack, 12-pack, and 50-pack sizes — choose based on your replacement schedule.

Key Features

• Genuine ResMed: The default filter ResMed supplies with the AirSense 11 and AirCurve 11 — fits the back-mounted filter slot without trimming or modification.
• Captures dust, pollen, and airborne particles: Polyester fibre construction with standard filtration efficiency for everyday indoor environments.
• Disposable, latex-free: Replace rather than wash — slides into place in seconds with no tools required.
• Lower cost than hypoallergenic: Right choice if you don't have allergies, asthma, or pets — saves money on a part that's replaced multiple times a year.
• Available in three pack sizes: 2-pack (part 39301), 12-pack (part 39302), and 50-pack (part 39303).

Compatibility

Compatible with the AirSense 11 and AirCurve 11 platforms:

• AirSense 11 series: AirSense 11 AutoSet, AirSense 11 Elite, and AirSense 11 CPAP variants
• AirCurve 11 series: all AirCurve 11 BiLevel variants

The filter is located in the slot at the back of the machine — pull out the old filter and slide the new one straight into the same slot. No tools or settings changes required.

AirSense 10 or AirSense 11 — Make Sure You Have the Right Filter

The AirSense 11 uses a completely different filter from the older AirSense 10, AirCurve 10, S9, and AirStart 10 — different shape, different size, different slot location on the machine. The filters aren't interchangeable. If you have an older ResMed machine, you need the S9 / AirSense 10 Standard Filter instead. Check the model name printed on your device — "AirSense 11" or "AirCurve 11" means this is the right filter; anything else means you need the older-machine version.

Standard or Hypoallergenic — Which Filter?

ResMed makes two filter types for the AirSense 11. The standard filter (this product) captures dust, pollen, and other large airborne particles — the right choice for most users in clean indoor environments. The hypoallergenic filter uses a polyester-free material that captures both fine and large airborne particles — worth the upgrade if you have allergies, asthma, pets, or live in a dustier environment.

Replacement Schedule

Replace your CPAP filter approximately every month — the 12-pack is sized to last roughly a year of monthly replacement. Replace sooner if you notice visible discolouration, dirty patches, or a drop in airflow. Users with pets, allergies, or in dustier environments may want to check weekly and replace more frequently. Replace immediately if the filter has been exposed to liquids or visible debris.

Important — Do Not Wash

The AirSense 11 standard filter is disposable, not washable. Attempting to wash, rinse, or vacuum the filter damages the polyester fibre matrix and reduces filtration effectiveness. Replace it on schedule rather than try to clean it.