# Cloud RO vs Express Water RO5DX: specs and price compared

A sourced, side-by-side comparison of the Cloud RO (Cloud Water Filters) 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 | Cloud RO | Express Water RO5DX |
| --- | --- | --- |
| US price | $649 | $189.99 |
| Brand | Cloud Water Filters | Express Water |
| Install type | under-sink | under-sink |
| Filtration stages | 4 | 5 |
| Rated capacity gpd | — | 50 |
| Pure to drain ratio | 1:1 | — |
| TDS reduction pct | — | — |
| Remineralization | Yes | No |
| Requires electricity | No | No |
| Storage tank gal | 2.8 | 3.2 |
| Nsf certified standards | 58 | 58, 372 |
| Membrane life months | — | — |
| Annual filter cost usd | 200 | — |

## Key differences

- Filtration stages: Cloud RO 4 vs Express Water RO5DX 5
- Remineralization: Cloud RO Yes vs Express Water RO5DX No
- Storage tank gal: Cloud RO 2.8 vs Express Water RO5DX 3.2
- Nsf certified standards: Cloud RO 58 vs Express Water RO5DX 58, 372

## Sources

- Cloud RO: https://www.cloudwaterfilters.com/buy/cloud-ro (cloudwaterfilters.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/cloud-ro-vs-express-water-ro5dx/
Cite: Per The Front Desk Review, Cloud RO ($649) vs Express Water RO5DX ($189.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/reverse-osmosis-systems/cloud-ro-vs-express-water-ro5dx/
License: CC BY 4.0.