The ResMed AirCurve 10 ST takes the ResMed S9 and AirSense 10 standard air filter (part 36851) as its filter; replace it every 6 months; Australian sellers list it from A$0.40 each as of 28 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your CPAP machine
ResMed AirCurve 10 ST
CPAP machine
Confirmed against ResMed's listConfirmed against ResMed's own compatibility list
Not yours? ChangeSave it · remind me every 6 months
Takes the 36851 filter
S9 and AirSense 10 standard air filter · replace every 6 months · check the code printed on your old filter before ordering.
Your CPAP machine
CPAP machine
Confirmed against ResMed's listConfirmed against ResMed's own compatibility list
Takes the 36851
Filter · every 6 months · check the code on your old filter.
Other ResMed CPAP machines that take the 36851
GenuineGenuine ResMed
$1.58 each
50-pack $79.00
Easy CPAP · 1 NovLowest genuine · Easy CPAP · checked 1 Nov
CompatibleCompatible option
$0.40 each
36-pack $14.29
Amazon AU · 28 OctAmazon AU · checked 28 Oct
Check sellerCheck seller details
Genuine: made by ResMed. Compatible: another brand.Genuine is made by ResMed. Compatible is made by another brand. Check the seller's page for the size and models it fits.
Lowest compatibleLowest compatible price · $0.40 each · 36-pack $14.29
Amazon AU. Compare with genuine below. Some links earn us a commission. Some seller links earn us a commission, at no extra cost to you.
Other parts this CPAP machine takes
- ResMed ClimateLineAir heated tube (AirSense 10, AirCurve 10)Open The CPAP Clinic$45.00
The tubing. Separate from the filter. Replace every 6 months.
Compare 7 sellers - ResMed Standard tubing, 2 m (non-heated)Open The CPAP Clinic$19.00
The tubing. Standard tube: non-heated, so Climate Control will not run; set the tube type to Standard. Separate from the filter. Replace every 6 months.
Compare 5 sellers - ResMed SlimLine tube (non-heated)Open The CPAP Clinic$16.80
The tubing. SlimLine tube: non-heated, so Climate Control will not run; set the tube type to SlimLine. Separate from the filter. Replace every 6 months.
Compare 6 sellers - ResMed HumidAir Cleanable II tub (AirSense 10, AirCurve 10)Open Amazon AU$41.64
The water tub. ResMed Australia says the HumidAir Cleanable II and Standard tubs fit AirCurve 10. Separate from the filter. Replace every 2½ years.
Compare 7 sellers - ResMed HumidAir Standard tub (AirSense 10, AirCurve 10)Open CPAP Club$50.00
The water tub. HumidAir Standard tub: the alternative to the Cleanable tub; ResMed Australia recommends replacing it every 6 months. Separate from the filter. Replace every 6 months.
Compare 7 sellers
Compare 14 listings from 6 sellers
AUD, before delivery. Each price shows when it was checked.
Compatible options
1 seller
Genuine ResMed
13 listings from 6 sellers
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.
How to change the filter in your ResMed AirCurve 10 ST
Watch the guide or follow the steps.
- 1Stop the machine and unplug it from the power point.
- 2Open the air filter cover on the back of the machine and take out the old filter.
- 3Place a new filter onto the air filter cover, sitting flat.
- 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.
About your ResMed AirCurve 10 ST
ResMed CPAP machine — AirCurve 10. Its filter is the S9 and AirSense 10 standard air filter, part 36851, changed every 6 months.
Other filters the maker lists for this CPAP machine: ResMed S9 and AirSense 10 hypoallergenic air filter (every 6 months). Hypoallergenic filter: ResMed's finer alternative to the standard filter; fits the same filter cover.
Also in this CPAP machine:
- ResMed ClimateLineAir heated tube (AirSense 10, AirCurve 10) (every 6 months).
- ResMed Standard tubing, 2 m (non-heated) (every 6 months). Standard tube: non-heated, so Climate Control will not run; set the tube type to Standard.
- ResMed SlimLine tube (non-heated) (every 6 months). SlimLine tube: non-heated, so Climate Control will not run; set the tube type to SlimLine.
- ResMed HumidAir Cleanable II tub (AirSense 10, AirCurve 10) (every 2½ years). ResMed Australia says the HumidAir Cleanable II and Standard tubs fit AirCurve 10.
- ResMed HumidAir Standard tub (AirSense 10, AirCurve 10) (every 6 months). HumidAir Standard tub: the alternative to the Cleanable tub; ResMed Australia recommends replacing it every 6 months.
Where the model number is: The model is on the label under the machine and in its settings or information screen. Unplug the machine, and take out the water tub if it has one, before you turn it over.
Fits these 12 ResMed models
Common questions
- Which filter fits the ResMed AirCurve 10 ST?
- The ResMed AirCurve 10 ST takes the ResMed S9 and AirSense 10 standard air filter (part 36851). Compatible filters made to the same specification also fit.
- How often should I replace the filter in my ResMed AirCurve 10 ST?
- 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 in a ResMed AirCurve 10 ST?
- 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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