FitMatch
ResMed S9 and AirSense 10 standard air filter

CPAP machine filter

ResMed S9 and AirSense 10 standard air filter

36851

Fits 12 models · replace every 6 months

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

Genuine

$1.58 each

50-pack $79.00

Easy CPAP · 1 Nov

Compatible

$0.40 each

36-pack $14.29

Amazon AU · 28 Oct

Check seller

Genuine: made by ResMed. Compatible: another brand.

Lowest compatible · $0.40 each · 36-pack $14.29

Amazon AU. Compare with genuine below. Some links earn us a commission.

Open Amazon AU

Compare 14 listings from 6 sellers

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

Amazon AUCompatible · checked 28 Oct$0.40 each36-pack $14.29Open
Easy CPAPGenuine · checked 1 Nov$1.58 each50-pack $79.00Open
ResMed AustraliaGenuine · checked 1 Nov$1.66 each12-pack $19.90Open
CPAP AustraliaGenuine · checked 1 Nov$1.66 each12-pack $19.90Open
CPAP DirectGenuine · checked 1 Nov$1.98 each50-pack $99.00Open
Open cheapest seller · $0.40 each · 36-pack $14.29

Opens Amazon AU 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 36851 filter

Watch the guide or follow the steps.

How to change your ResMed AirSense 10 Air Filter · SleepRightAustralia
  1. 1Stop the machine and unplug it from the power point.
  2. 2Open the air filter cover on the back of the machine and take out the old filter.
  3. 3Place a new filter onto the air filter cover, sitting flat.
  4. 4Close the cover. ResMed says the filter and cover must be fitted at all times.
Every number this part goes by
Retail name:
36850
Retail name:
36851
Retail name:
36852
Retail name:
36853
Retail name:
ResMed S9 AirSense 10 filters
Retail name:
ResMed standard filter

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 12 ResMed models
Common questions
What does the 36851 fit?
The ResMed S9 and AirSense 10 standard air filter (part 36851) fits 12 ResMed models, including the AirCurve 10 CS PaceWave, AirCurve 10 S and AirCurve 10 ST. Every one is listed on this page. Compatible filters made to the same specification also fit.
How often should I replace the 36851?
Every 6 months. It works less well as the filter fills up, so it's worth doing on time.
Where can I buy the 36851 in Australia?
We track 6 Australian sellers for the 36851; the lowest listed price when we last checked was A$0.40 at Amazon AU. Prices are re-checked daily and dated on this page.
How do I fit the 36851?
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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