The G3P600 uses three filter types that replace on different schedules. The smart LED faucet tracks all of them automatically — here's what each filter is, when it's due, and what to buy.
| G3-CF — Pre-filter | Every 6 months or based on LED indicator |
| G3-CB — Carbon Block Filter | Every 12 months or based on LED indicator |
| WD-G3P600-RO — RO Membrane | Every 2 years or based on LED indicator |
Waterdrop's G3 1-year combo pack includes 2× G3-CF and 1× G3-CB — the two filters that need replacing every 6 and 12 months. Order this once a year for all non-membrane filter needs. Order the RO membrane separately at the 2-year mark.
| Year 1 | G3-CF × 2 + G3-CB × 1 = ~$60–$80 |
| Year 2 | G3-CF × 2 + G3-CB × 1 + G3P600-RO membrane = ~$120–$150 |
| Average per year | ~$90–$115 over a 2-year cycle |
Yes. When you install a new Waterdrop filter, the smart faucet detects the new cartridge and resets the corresponding LED indicator automatically. No button to press, no manual reset required. This is one of the features that makes Waterdrop maintenance genuinely easier than competing systems.