The iRobot Roomba s9 takes the iRobot High-Efficiency Filter 3-Pack (Roomba s series) (part 4655988) as its filter; replace it every 2 months; Australian sellers list it from A$7.95 as of 26 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your robot vacuum
iRobot Roomba s9
Robot vacuum
Confirmed against iRobot's listConfirmed against iRobot's own compatibility list
Not yours? ChangeSave it · remind me every 2 months
Takes the 4655988 filter
High-Efficiency Filter 3-Pack (Roomba s series) · replace every 2 months · check the code printed on your old filter before ordering.
Your robot vacuum
Robot vacuum
Confirmed against iRobot's listConfirmed against iRobot's own compatibility list
Takes the 4655988
Filter · every 2 months · check the code on your old filter.
Other iRobot robot vacuums that take the 4655988
GenuineGenuine iRobot
See seller
iRobot Australia · 26 OctiRobot Australia · checked 26 Oct
CompatibleCompatible option
$7.95
Amazon AU · 26 OctAmazon AU · checked 26 Oct
Check sellerCheck seller details
Genuine: made by iRobot. Compatible: another brand.Genuine is made by iRobot. Compatible is made by another brand. Check the seller's page for the size and models it fits.
Lowest compatibleLowest compatible price · $7.95
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 robot vacuum takes
- iRobot Dual Multi-Surface Rubber Brushes (Roomba s series)Open Amazon AU$12.95
The main brush. Separate from the filter. Replace every 6 months.
Compare 3 sellers - iRobot Corner Brush 3-Pack (Roomba s series)Open Amazon AU$4.99
The side brush. Separate from the filter. Replace every 3 months.
Compare 2 sellers
Compare 3 sellers
AUD, before delivery. Each price shows when it was checked.
Compatible options
2 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 2 months. One email two weeks before, no newsletter. Manage or stop it anytime.
How to change the filter in your iRobot Roomba s9
Watch the guide or follow the steps.
- 1Press the bin release button and lift the bin out of the robot.
- 2Open the bin and pull the old filter out.
- 3Fit the new filter (do not wash it) and put the bin back until it clicks.
Every number this part goes by
- Retail name:
- 4643682
- Retail name:
- 4655988
Sellers list any of these; they are the same part.
About your iRobot Roomba s9
iRobot robot vacuum — Roomba s series. Its filter is the High-Efficiency Filter 3-Pack (Roomba s series), part 4655988, changed every 2 months.
Also in this robot vacuum: iRobot Dual Multi-Surface Rubber Brushes (Roomba s series) (every 6 months), iRobot Corner Brush 3-Pack (Roomba s series) (every 3 months).
Where the model number is: Turn the robot over: the model name and serial are on the label on the underside. The model name is also on the top lid of most robots.
Fits these 2 iRobot models
iRobot2 models
Common questions
- Which filter fits the iRobot Roomba s9?
- The iRobot Roomba s9 takes the iRobot High-Efficiency Filter 3-Pack (Roomba s series) (part 4655988). Compatible filters made to the same specification also fit.
- How often should I replace the filter in my iRobot Roomba s9?
- Every 2 months. It works less well as the filter fills up, so it's worth doing on time.
- Where can I buy the 4655988 in Australia?
- We track 3 Australian sellers for the 4655988; the lowest listed price when we last checked was A$7.95 at Amazon AU. Prices are re-checked daily and dated on this page.
- How do I fit the 4655988 in an iRobot Roomba s9?
- No tools, a few minutes: 3 steps, listed on this page with the replacement video where the maker has one.
- What happens if I don't change it?
- A clogged filter loses suction, worn brushes miss edges, and a stale mop cloth smears rather than cleans.
Something looks wrong with the Roomba s9 match? . Reports go to a person, not a bot.