iSpring
iSpring RCC7AK
$241.99
Best Reverse Osmosis Systems · head-to-head
A sourced, side-by-side comparison. iSpring RCC7AK is cheaper at $241.99. Every spec and price links to its source.
iSpring
$241.99
Home Master
—
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | | |
|---|---|---|
| US price | $241.99 | — |
| Brand | iSpring | Home Master |
| Released | — | — |
| Install type | under-sink | under-sink |
| Filtration stages | 6 | 9 |
| Rated capacity gpd | 75 | 50 |
| Pure to drain ratio | — | 1:1 |
| TDS reduction pct | 97.9 | — |
| Remineralization | Yes | Yes |
| Requires electricity | No | Yes |
| Storage tank gal | 3.2 | 3.2 |
| Nsf certified standards | 58 | — |
| Membrane life months | — | — |
| Annual filter cost usd | 80.99 | — |
Sources — iSpring RCC7AK: ispringfilter.com (verified 2026-07-11). Home Master TMHP HydroPerfection: theperfectwater.com (verified 2026-07-11).
Where the two actually differ on the specs we track (3 of 11). Matching specs are omitted.