The Melitta Caffeo Solo & Milk takes the Melitta PRO AQUA filter cartridge (part 6784658) as its water filter; replace it every 2 months; Australian sellers list it from A$23.00 as of 26 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your coffee machine
Melitta Caffeo Solo & Milk
Confirmed against Melitta's listConfirmed against Melitta's own compatibility list
Not yours? ChangeSave it · remind me every 2 months
Takes the 6784658 water filter
PRO AQUA filter cartridge · replace every 2 months · check the code printed on your old filter before ordering.
Your coffee machine
Confirmed against Melitta's listConfirmed against Melitta's own compatibility list
Takes the 6784658
Water filter · every 2 months · check the code on your old filter.
Other Melitta coffee machines that take the 6784658
GenuineGenuine Melitta
$23.00
Amazon AU · 26 OctLowest genuine · Amazon AU · checked 26 Oct
CompatibleCompatible option
See seller
No compatible seller tracked yetNo compatible seller tracked yet
Genuine: made by Melitta. Compatible: another brand. Check certification on the seller's page.Genuine is made by Melitta. Compatible is made by another brand. Check the seller's certification details before choosing.
Lowest price · $23.00
Amazon AU. 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.
Other parts this coffee machine takes
- Melitta ANTI CALC liquid descaler for automatic coffee machines 250 mlOpen Amazon AU$18.95
The descaler. Descale when the machine asks for the descaling programme.
- Melitta PERFECT CLEAN cleaning tabs (4)Open Amazon AU$12.00
The coffee machine cleaner. Clean when the machine asks for the cleaning programme; one tab each time.
Compare 2 sellers - Melitta PERFECT CLEAN milk system cleaner 250 mlOpen Amazon AU$13.00
The milk system cleaner. Clean the milk system when the machine asks for the milk system cleaning programme.
Compare 2 sellers
Compare 3 listings from 2 sellers
AUD, before delivery. Each price shows when it was checked.
Genuine Melitta
3 listings from 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 water filter is due — it's every 2 months. One email two weeks before, no newsletter. Manage or stop it anytime.
How to change the water filter in your Melitta Caffeo Solo & Milk
Watch the guide or follow the steps.
No clear video for this part yet. The steps cover it.
- 1Stand the new cartridge in a jug of fresh tap water for a few minutes.
- 2Display models (Barista, Passione, Varianza, CI Touch): open the menu, go to Care > Filter > Insert filter (or Change filter) and press Start.
- 3Button models (Purista, Latticia, Avanza): hold the Service or Water/Service button for 2 seconds and step to the Filter function.
- 4Follow the machine: empty the tank, screw the cartridge into the bottom of the tank, fill with fresh water and let the filter programme run.
- 5Change it every 2 months, or sooner when the machine asks.
Every number this part goes by
- Retail name:
- 192830
- Retail name:
- 4006508192830
- Retail name:
- 6784658
- Retail name:
- Melitta Pro Aqua
- Retail name:
- Pro Aqua
- Retail name:
- PRO AQUA
Sellers list any of these; they are the same part.
About your Melitta Caffeo Solo & Milk
Melitta coffee machine — Caffeo. Its water filter is the PRO AQUA filter cartridge, part 6784658, changed every 2 months.
Also in this coffee machine: Melitta ANTI CALC liquid descaler for automatic coffee machines 250 ml, Melitta PERFECT CLEAN cleaning tabs (4), Melitta PERFECT CLEAN milk system cleaner 250 ml.
Where the model number is: The model number is usually on a sticker on the underside or back of the machine.
Fits these 10 Melitta models
Common questions
- Which water filter fits the Melitta Caffeo Solo & Milk?
- The Melitta Caffeo Solo & Milk takes the Melitta PRO AQUA filter cartridge (part 6784658).
- How often should I replace the water filter in my Melitta Caffeo Solo & Milk?
- Every 2 months. Flow slows and performance drops off as the filter fills up, so it's worth doing on time.
- Where can I buy the 6784658 in Australia?
- We track 2 Australian sellers for the 6784658; the lowest listed price when we last checked was A$23.00 at Amazon AU. Prices are re-checked daily and dated on this page.
- How do I fit the 6784658 in a Melitta Caffeo Solo & Milk?
- No tools, a few minutes: 5 steps, listed on this page with the replacement video where the maker has one.
- What happens if I don't change it?
- The filter stops softening the water, scale builds in the boiler, and the machine asks to be descaled more often; taste in the cup drops off too.
- How do I reset the filter light?
- Register the new filter in the menu (Care > Filter > Insert filter or Change filter on display models; Service mode on button models). The Filter light then resets.
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