Waterdrop G3 Replacement Filter Set
Keep your G3/G3P800 tankless RO at full performance
Prices checked Jun 2026. Marketplace prices change often — verify the latest price before buying.
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Our Review
A tankless RO system is only as good as its current filters. This OEM set keeps a Waterdrop G3 or G3P800 performing to spec with the carbon (CF), membrane (MRO), and post-carbon (CB) stages it's designed around.
The twist-in cartridges change in seconds with no tools, and the system's filter-life indicator tracks each stage so you know exactly when to swap. Buying genuine keeps your certification and warranty intact.
Pros
- Genuine OEM fit and certification
- Twist-in changes take seconds
- Filter-life indicator resets automatically
Cons
- Only fits Waterdrop G3-series systems
- Membrane sold separately on some bundles
The HU Recommendation
If you own a G3, budget for the CF/CB stages roughly yearly and the membrane every couple of years. Genuine cartridges are worth it to keep the certified contaminant reduction.
Prices checked Jun 2026. Marketplace prices change often — verify the latest price before buying.
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