The AquaTru Carafe uses a dedicated filter set that's different from the Classic. Here's the full replacement schedule, costs, and exactly what to buy.
AquaTru Carafe filters are not compatible with the Classic, Classic Smart, or Under Sink models. If you own a Carafe, always buy filters specifically labeled for the Carafe (AT100 series).
| Stage 1–2: Pre-Carbon Filter (AT100) | Every 6 months or 300 gallons — whichever comes first |
| Stage 3: RO Membrane (AT100) | Every 2 years or 600 gallons — whichever comes first |
| Stage 4: VOC Carbon Filter (AT100) | Every 12 months or 300 gallons — whichever comes first |
In a typical one to two person household, you'll hit the 6-month time limit on the pre-filter before you hit 300 gallons. So in practice, the replacement frequency follows the time schedule rather than the gallon limit. Annual filter costs for Carafe owners run approximately $80–$110 per year — slightly less than the Classic due to the smaller filter sizes, but slightly higher on a per-gallon basis.
The easiest purchase is the one-year combo pack, which includes everything you need for 12 months: two pre-carbon filters and one VOC carbon filter. The RO membrane is sold separately and only needs replacing every two years.
AquaTru Carafe 1-Year Filter Combo Pack on Amazon →All Carafe filters are twist-in/twist-out with no tools. The process is identical to the Classic:
For a typical one-to-two person household, you'll be replacing the pre-carbon filter every 6 months on schedule, the VOC filter once a year, and the RO membrane every 2 years. This is remarkably low maintenance compared to pitcher filters that need replacement every 2–3 months. See our full guide on how often to replace AquaTru filters for more detail.