Vacuum cleaner air filter · Miele
Miele Boost CX1 Fine Dust Filter (CX FSF)
- Replace every 12 months
- Fresh-air filter
- Fits 1 model
The fine-dust filter for the Boost CX1, the washable element in the filter frame behind the dust container. Rinse it when the indicator asks; replace it yearly.
- Change
- Every 12 months; rinse in between
Every number this part goes by
- Retail name:
- CXFSF
Where to buy
Every seller we track for this part, cheapest first. Genuine is the manufacturer's own part; compatible is a third-party filter made to fit. Prices are re-checked daily where the seller publishes them. Last checked 1 August 2026.
How long it lasts
Replace every 12 months.
Flow slows and taste drops off as the filter fills up. Changing on time is the whole point of the filter.
Not due yet?
This filter is due every 12 months. We'll email you when it's time — free, no spam.
Fitting it
A few minutes, no tools. Watch it done, then follow the steps.
- 1Take the dust container off the Boost CX1 and lift the filter frame out from behind it.
- 2Pull the old fine-dust filter out of the frame and press the new one in.
- 3Refit the frame and the container; rinse the filter under the tap whenever the indicator asks and let it dry fully.
Will it fit your appliance?
Type your model number and we'll check it against our fitment database.
Fits these models
Miele1 model
Common questions
- Which air filter fits the Miele CX FSF?
- The Miele CX FSF takes the Miele Boost CX1 Fine Dust Filter (CX FSF) (part CX FSF). Compatible filters made to the same specification also fit.
- How often should I replace the air filter in my Miele CX FSF?
- Every 12 months. Flow slows and performance drops off as the filter fills up, so it's worth doing on time.
- Where can I buy the CX FSF in Australia?
- We track 1 Australian seller for the CX FSF; the lowest listed price when we last checked was A$59.00 at miele_au. Prices are re-checked daily and dated on this page.
- How do I fit the CX FSF in a Miele CX FSF?
- No tools, a few minutes: 3 steps, listed on this page with the replacement video where the maker has one.
Own a CX FSF and this looks wrong? . Reports go to a person, not a bot.