iSpring
iSpring RCC7AK
$229.99Cheaper
Best Reverse Osmosis Systems · head-to-head
iSpring RCC7AK vs Brondell Circle RC100
A sourced, side-by-side comparison. iSpring RCC7AK is cheaper at $229.99. Every spec and price links to its source.
Brondell
Brondell Circle RC100
$449.99
2 sellers$449.99read
Which is better: the iSpring RCC7AK or Brondell Circle RC100?
On the specs we track, they're closely matched. The iSpring RCC7AK is the cheaper at $229.99.
As an Amazon Associate we earn from qualifying purchases. Prices verified at capture; live price may differ.
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec |  iSpring RCC7AK |  Brondell Circle RC100 |
|---|---|---|
| US price | $229.99 | $449.99 |
| Brand | iSpring | Brondell |
| Released | — | — |
| Install type | under-sink | under-sink |
| Filtration stages | 6 | 4 |
| Rated capacity gpd | 75 | — |
| Pure to drain ratio | — | — |
| TDS reduction (%) | 97.9 | — |
| Remineralization | Yes | No |
| Requires electricity | No | No |
| Storage tank (gal) | 3.2 | 1.6 |
| NSF certified standards | 58 | 42, 53, 58, 372 |
| Membrane life months | — | 24 |
| Annual filter cost (USD) | 80.99 | — |
Sources — iSpring RCC7AK: ispringfilter.com (verified 2026-10-01). Brondell Circle RC100: brondell.com (verified 2026-10-20).
What's the difference between the iSpring RCC7AK and Brondell Circle RC100?
Where the two actually differ on the specs we track (4 of 11). Matching specs are omitted.
- Filtration stages: iSpring RCC7AK 6 vs Brondell Circle RC100 4
- Remineralization: iSpring RCC7AK true vs Brondell Circle RC100 false
- Storage tank (gal): iSpring RCC7AK 3.2 vs Brondell Circle RC100 1.6
- NSF certified standards: iSpring RCC7AK 58 vs Brondell Circle RC100 42, 53, 58, 372