The ResMed AirMini takes the ResMed AirMini air filter (part 38815) as its filter; replace it every 6 months; Australian sellers list it from A$1.00 each as of 28 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your CPAP machine
ResMed AirMini
CPAP machine
Confirmed against ResMed's listConfirmed against ResMed's own compatibility list
Not yours? ChangeSave it · remind me every 6 months
Takes the 38815 filter
AirMini 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 38815
Filter · every 6 months · check the code on your old filter.
Other ResMed CPAP machines and their filters and parts
The 38815 fits the AirMini only. These ResMed models take a different filter:
GenuineGenuine ResMed
$2.08 each
12-pack $25.00
CPAP Direct · 1 NovLowest genuine · CPAP Direct · checked 1 Nov
CompatibleCompatible option
$1.00 each
20-pack $19.99
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 · $1.00 each · 20-pack $19.99
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.
This CPAP machine also takes a tubing
- ResMed AirMini tubingOpen ResMed Australia$20.00
The AirMini tube comes in ResMed's AirMini setup packs and mask packs, not with the machine itself. Separate from the filter. Replace every 6 months.
Compare 5 sellers
Compare 10 listings from 6 sellers
AUD, before delivery. Each price shows when it was checked.
Compatible options
1 seller
Genuine ResMed
9 listings from 5 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 AirMini
Watch the guide or follow the steps.
- 1Turn the AirMini off and unplug it.
- 2Slide the air filter cover off and remove the old filter.
- 3Insert a new filter.
- 4Slide the cover back on. ResMed says the cover must be fitted at all times.
Every number this part goes by
- Retail name:
- 38814
- Retail name:
- 38815
- Retail name:
- 38816
- Retail name:
- ResMed AirMini filters
Sellers list any of these; they are the same part.
About your ResMed AirMini
ResMed CPAP machine — AirMini. Its filter is the AirMini air filter, part 38815, changed every 6 months.
Other filters the maker lists for this CPAP machine: ResMed AirMini hypoallergenic air filter (every 6 months). AirMini hypoallergenic filter: the finer alternative to the standard AirMini filter.
Also in this CPAP machine: ResMed AirMini tubing (every 6 months). The AirMini tube comes in ResMed's AirMini setup packs and mask packs, not with the machine itself.
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 this ResMed model
ResMed1 model
Common questions
- Which filter fits the ResMed AirMini?
- The ResMed AirMini takes the ResMed AirMini air filter (part 38815). Compatible filters made to the same specification also fit.
- How often should I replace the filter in my ResMed AirMini?
- Every 6 months. It works less well as the filter fills up, so it's worth doing on time.
- Where can I buy the 38815 in Australia?
- We track 6 Australian sellers for the 38815; the lowest listed price when we last checked was A$1.00 at Amazon AU. Prices are re-checked daily and dated on this page.
- How do I fit the 38815 in a ResMed AirMini?
- 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: ResMed's AirMini guide has no filter reminder to clear.
Something looks wrong with the AirMini match? . Reports go to a person, not a bot.