Waterdrop
Waterdrop G3 P800
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Best Reverse Osmosis Systems · head-to-head
Waterdrop G3 P800 vs AquaTru Classic
A sourced, side-by-side comparison. AquaTru Classic is cheaper at $475. Every spec and price links to its source.
AquaTru
AquaTru Classic
$475
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec |  Waterdrop G3 P800 |  AquaTru Classic |
|---|---|---|
| US price | — | $475 |
| Brand | Waterdrop | AquaTru |
| Released | — | — |
| Install type | tankless-under-sink | countertop |
| Filtration stages | 10 | 4 |
| Rated capacity gpd | 800 | — |
| Pure to drain ratio | 3:1 | — |
| TDS reduction (%) | — | — |
| Remineralization | No | No |
| Requires electricity | Yes | Yes |
| Storage tank (gal) | 0 | 0.75 |
| NSF certified standards | 42, 53, 58, 372 | — |
| Membrane life months | 24 | 24 |
| Annual filter cost (USD) | — | — |
Sources — Waterdrop G3 P800: waterdropfilter.com (verified 2026-07-11). AquaTru Classic: aquatru.com (verified 2026-10-20).
What's the difference between the Waterdrop G3 P800 and AquaTru Classic?
Where the two actually differ on the specs we track (3 of 11). Matching specs are omitted.
- Install type: Waterdrop G3 P800 tankless-under-sink vs AquaTru Classic countertop
- Filtration stages: Waterdrop G3 P800 10 vs AquaTru Classic 4
- Storage tank (gal): Waterdrop G3 P800 0 vs AquaTru Classic 0.75