FitMatch
ResMed AirSense 11 (Air11) hypoallergenic air filter

CPAP machine filter

ResMed AirSense 11 (Air11) hypoallergenic air filter

39305

Fits 4 models · replace every 6 months

Wrong part, or your model missing? Tell us. A person checks every report.

Genuine

$2.38 each

50-pack $119.00

Easy CPAP · 1 Nov

Compatible

See seller

No compatible seller tracked yet

Genuine: made by ResMed. Compatible: another brand.

Lowest price · $2.38 each · 50-pack $119.00

Easy CPAP. Every seller we track is listed below. Some links earn us a commission.

Open Easy CPAP

Compare 13 listings from 5 sellers

AUD, before delivery. Each price shows when it was checked.

Easy CPAPGenuine · checked 1 Nov$2.38 each50-pack $119.00Open
CPAP DirectGenuine · checked 1 Nov$2.70 each50-pack $135.00Open
CPAP DirectGenuine · checked 1 Nov$3.33 each12-pack $40.00Open
ResMed AustraliaGenuine · checked 1 Nov$3.33 each12-pack $40.00Open
Easy CPAPGenuine · checked 1 Nov$3.33 each12-pack $40.00Open
Open cheapest seller · $2.38 each · 50-pack $119.00

Opens Easy CPAP in a new tab. Their page is the source of truth for price, delivery and returns.

Not due yet?

Get a nudge when your filter is due — it's every 6 months. One email two weeks before, no newsletter. Manage or stop it anytime.

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How to change the 39305 filter

Watch the guide or follow the steps.

Changing the Filter on the ResMed AirSense 11 CPAP device · SleepRightAustralia
  1. 1Stop the machine and unplug it.
  2. 2Open the air filter cover and take out the old filter.
  3. 3Place the new hypoallergenic filter onto the air filter cover.
  4. 4Close the cover. The filter and cover must be fitted at all times.
Every number this part goes by
Retail name:
39304
Retail name:
39305
Retail name:
39306
Retail name:
39307

Sellers list any of these; they are the same part.

Will it fit your appliance?

Type your model number and we'll check it against the makers' lists.

Fits these 4 ResMed models

Hypoallergenic Air11 filter: the finer alternative to the standard filter; fits the same cover.

Common questions
What does the 39305 fit?
The ResMed AirSense 11 (Air11) hypoallergenic air filter (part 39305) fits 4 ResMed models, including the AirCurve 11 ASV, AirCurve 11 VAuto and AirSense 11 AutoSet. Every one is listed on this page.
How often should I replace the 39305?
Every 6 months. It works less well as the filter fills up, so it's worth doing on time.
Where can I buy the 39305 in Australia?
We track 5 Australian sellers for the 39305; the lowest listed price when we last checked was A$2.38 at Easy CPAP. Prices are re-checked daily and dated on this page.
How do I fit the 39305?
No tools, a few minutes: 4 steps, listed on this page with the replacement video where the maker has one.
What happens if I don't change it?
A blocked filter restricts the air the machine draws in, and a torn one lets dust and pollen through; the manual says when to replace it.
Is there anything to reset afterwards?
No reset in ResMed's guide. If your care provider turned on replacement reminders, the machine shows them on screen; ResMed's guide does not say the machine detects a new part.

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