Cloud Water Filters
Cloud RO
$649
Best Reverse Osmosis Systems · head-to-head
Cloud RO vs Express Water RO5DX
A sourced, side-by-side comparison. Express Water RO5DX is cheaper at $189.99. Every spec and price links to its source.
Express Water
Express Water RO5DX
$189.99Cheaper
Which is better: the Cloud RO or Express Water RO5DX?
On the specs we track, they're closely matched. The Express Water RO5DX is the cheaper at $189.99.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Cloud RO | Express Water RO5DX |
|---|---|---|
| US price | $649 | $189.99 |
| Brand | Cloud Water Filters | Express Water |
| Released | — | — |
| 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 | — |
Sources — Cloud RO: cloudwaterfilters.com (verified 2026-07-11). Express Water RO5DX: expresswater.com (verified 2026-07-11).
What's the difference between the Cloud RO and Express Water RO5DX?
Where the two actually differ on the specs we track (4 of 11). Matching specs are omitted.
- Filtration stages: Cloud RO 4 vs Express Water RO5DX 5
- Remineralization: Cloud RO true vs Express Water RO5DX false
- 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