The Ionmax ION450 takes the Ionmax ION450 carbon deodorisation filter (part ION450-CF) as its carbon filter; replace it every 12 months; Australian sellers list it from A$35.00 as of 22 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your air purifier
Ionmax ION450
Air purifier
Confirmed against Ionmax's listConfirmed against Ionmax Australia's compatibility list
Not yours? ChangeSave it · remind me every 12 months
Takes the ION450-CF carbon filter
ION450 carbon deodorisation filter · replace every 12 months · check the code printed on your old filter before ordering.
Your air purifier
Air purifier
Confirmed against Ionmax's listConfirmed against Ionmax Australia's compatibility list

Takes the ION450-CF
Carbon filter · every 12 months · check the code on your old filter.
Other Ionmax air purifiers and their filters
The ION450-CF fits the ION450 only. These Ionmax models take a different carbon filter:
GenuineGenuine Ionmax
$35.00
Ionmax · 22 OctLowest genuine · Ionmax · checked 22 Oct
CompatibleCompatible option
See seller
No compatible seller tracked yetNo compatible seller tracked yet
Genuine: made by Ionmax. Compatible: another brand. Check certification on the seller's page.Genuine is made by Ionmax. Compatible is made by another brand. Check the seller's certification details before choosing.
Lowest price · $35.00
Ionmax. Every seller we track is listed below. Some links earn us a commission. Some seller links earn us a commission, at no extra cost to you.
This air purifier also takes a pre-filter
- Ionmax ION450 replacement pre-filtersOpen Ionmax$16.00
Separate from the carbon filter. Reduces hair, lint and large dust before the main filter. Replace every 12 months.
Compare 1 seller
AUD, before delivery. Each price shows when it was checked.
Opens Ionmax in a new tab. Their page is the source of truth for price, delivery and returns.
How long it lasts
Usually every 12 months.
Flow slows and taste drops off as the filter fills up. Changing on time is the whole point.
Not due yet?
Get a nudge when your filter is due — it's every 12 months. One email two weeks before, no newsletter. Manage or stop it anytime.
How to change the carbon filter in your Ionmax ION450
Watch the guide or follow the steps.
No clear video for this part yet. The steps cover it.
- 1Switch the purifier off and unplug it.
- 2Pull the front panel off from the bottom edge.
- 3Lift the old 3-in-1 filter out, unwrap the new one and fit it the same way round, carbon side out.
- 4Refit the panel, plug in, and hold the filter button until the indicator clears.
Every number this part goes by
- Retail name:
- ION450 carbon filter
- Retail name:
- ION450-CF
Sellers list any of these; they are the same part.
About your Ionmax ION450
Ionmax air purifier, air purifier — ION450 (discontinued). Its carbon filter is the ION450 carbon deodorisation filter, part ION450-CF, changed every 12 months.
Also in this air purifier: Ionmax ION450 replacement pre-filters (every 12 months).
Where the model number is: The model number is on the rating label on the bottom or back of the purifier; the old filter usually has its own code printed on the frame.
Fits these 1 Ionmax model
Ionmax1 model
Common questions
- Which carbon filter fits the Ionmax ION450?
- The Ionmax ION450 takes the Ionmax ION450 carbon deodorisation filter (part ION450-CF). Compatible filters made to the same specification also fit.
- How often should I replace the carbon filter in my Ionmax ION450?
- 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 ION450-CF in Australia?
- We track 1 Australian seller for the ION450-CF; the lowest listed price when we last checked was A$35.00 at Ionmax. Prices are re-checked daily and dated on this page.
- How do I fit the ION450-CF in a Ionmax ION450?
- 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?
- The fan works harder for less airflow, and the carbon layer stops taking smells out well before the filter looks dirty.
Something looks wrong with the ION450 match? . Reports go to a person, not a bot.