# AquaTru Classic vs Express Water RO5DX: specs and price compared

A sourced, side-by-side comparison of the AquaTru Classic (AquaTru) and Express Water RO5DX (Express Water) among reverse osmosis systems. Express Water RO5DX is the cheaper of the two at $189.99.

## Side by side

| Spec | AquaTru Classic | Express Water RO5DX |
| --- | --- | --- |
| US price | $475 | $189.99 |
| Brand | AquaTru | Express Water |
| Install type | countertop | under-sink |
| Filtration stages | 4 | 5 |
| Rated capacity gpd | — | 50 |
| Pure to drain ratio | — | — |
| TDS reduction pct | — | — |
| Remineralization | No | No |
| Requires electricity | Yes | No |
| Storage tank gal | 0.75 | 3.2 |
| Nsf certified standards | — | 58, 372 |
| Membrane life months | 24 | — |
| Annual filter cost usd | — | — |

## Key differences

- Install type: AquaTru Classic countertop vs Express Water RO5DX under-sink
- Filtration stages: AquaTru Classic 4 vs Express Water RO5DX 5
- Requires electricity: AquaTru Classic Yes vs Express Water RO5DX No
- Storage tank gal: AquaTru Classic 0.75 vs Express Water RO5DX 3.2

## Sources

- AquaTru Classic: https://aquatruwater.com/products/countertop-reverse-osmosis-water-purifier (aquatruwater.com, verified 2026-07-11)
- Express Water RO5DX: https://www.expresswater.com/products/ro-system-ro5dx-with-free-filter-set (expresswater.com, verified 2026-07-11)

Canonical: https://frontdeskreview.com/gear/reverse-osmosis-systems/aquatru-classic-vs-express-water-ro5dx/
Cite: Per The Front Desk Review, AquaTru Classic ($475) vs Express Water RO5DX ($189.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/reverse-osmosis-systems/aquatru-classic-vs-express-water-ro5dx/
License: CC BY 4.0.