# Waterdrop G3 P800 vs AquaTru Classic: specs and price compared

A sourced, side-by-side comparison of the Waterdrop G3 P800 (Waterdrop) and AquaTru Classic (AquaTru) among reverse osmosis systems.

## Side by side

| Spec | Waterdrop G3 P800 | AquaTru Classic |
| --- | --- | --- |
| US price | not published | $475 |
| Brand | Waterdrop | AquaTru |
| Install type | tankless-under-sink | countertop |
| Filtration stages | 10 | 4 |
| Rated capacity gpd | 800 | — |
| Pure to drain ratio | 3:1 | — |
| TDS reduction pct | — | — |
| 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 | — | — |

## Key differences

- 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

## Sources

- Waterdrop G3 P800: https://www.waterdropfilter.com/products/tankless-reverse-osmosis-system-wd-g3p800-w-fc-1 (waterdropfilter.com, verified 2026-07-11)
- AquaTru Classic: https://aquatruwater.com/products/countertop-reverse-osmosis-water-purifier (aquatruwater.com, verified 2026-07-11)

Canonical: https://frontdeskreview.com/gear/reverse-osmosis-systems/waterdrop-g3-p800-vs-aquatru-classic/
Cite: Per The Front Desk Review, Waterdrop G3 P800 (not published) vs AquaTru Classic ($475) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/reverse-osmosis-systems/waterdrop-g3-p800-vs-aquatru-classic/
License: CC BY 4.0.