Coffee Machine Filter Replacement Calculator

Estimate when to replace a compatible water filter using its installation date and your usage. Select the actual cartridge fitted to your machine. The machine’s own replacement prompt, a different filter package or a shorter instruction in the manual overrides this estimate.

Filter Replacement Calculator

Filter and machinePhilips/Saeco AquaClean CA6903Keurig reservoir water filter — K-SupremeDe’Longhi DLSC002 — compatible Magnifica Evo variantBreville BES870 older two-month filterInstalled onCups per dayKeurig tank refills per week (optional)Average brew size (mL, for Keurig estimate)Water hardness (mg/L as CaCO3, optional)

Calculate replacement date

For Keurig, an empty refill field estimates full 66 fl oz K-Supreme reservoir refills from brew size and cups/day. Rinsing and other water use are excluded, so counting real tank refills is better. For AquaClean, 625 cups is an upper limit; the machine can request a new filter sooner.

Which limit is used?

Cartridge	Planning limit
Philips/Saeco AquaClean CA6903	At least every three months, up to 625 cups, or sooner if the machine requests it.
Keurig reservoir cartridge	Two months or 60 tank refills, whichever comes first.
De’Longhi DLSC002	Up to two months; follow the machine/manual if sooner.
Breville BES870 older filter	Two months per the linked BES870 manual revision. Verify the cartridge in your machine.

Hard water can increase maintenance demand, but there is no universal hardness multiplier for these cartridges. The hardness input supplies context; it does not invent a new product lifespan. An AquaClean filter does not cancel an active descale prompt. Sources: Philips AquaClean capacity, Philips three-month replacement instruction, Keurig cartridge instruction, K-Supreme reservoir capacity, De’Longhi DLSC002, Breville BES870 manual.

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