iSpring RCC7AK 6-Stage RO vs Brondell H2O+ Circle — Which Should You Buy?

Side-by-side comparison of iSpring RCC7AK 6-Stage RO and Brondell H2O+ Circle. We compare specs, performance, and value to help you decide.

Updated 2026-03-09 Independently reviewed
iSpring RCC7AK 6-Stage RO

iSpring RCC7AK 6-Stage RO

8.9/10
$220 /one-time
VS
Brondell H2O+ Circle

Brondell H2O+ Circle

8.4/10
$129 /one-time

Feature Comparison

Feature iSpring RCC7AK 6-Stage RO Brondell H2O+ Circle
Type 6-stage RO 3-stage carbon
Capacity 75 GPD 1,320 gallons
Stages 6 (including alkalinity) —
Removes Lead, arsenic, fluoride, PFAS Chlorine, lead, cysts
Remineralization Yes —
Tank 3.2 gallon —
Waste Ratio 4:1 —
Warranty 1 year 1 year
Filter Life — 2 years
Design — Compact circle
Installation — Under sink
Flow Rate — 0.5 GPM

iSpring RCC7AK 6-Stage RO

Pros

  • ✓99%+ contaminant removal
  • ✓6-stage RO
  • ✓Remineralization
  • ✓Removes fluoride
  • ✓Great value
  • ✓75 GPD
  • ✓Includes tank and faucet

Cons

  • ✗Traditional tank design
  • ✗4:1 waste ratio
  • ✗Slower flow than tankless

Brondell H2O+ Circle

Pros

  • ✓2-year filter life
  • ✓1,320 gallon capacity
  • ✓Compact
  • ✓3-stage
  • ✓Removes lead, cysts
  • ✓Easy filter change
  • ✓Sleek design

Cons

  • ✗Not RO
  • ✗Lower flow
  • ✗Premium price for non-RO

Our Verdict

iSpring RCC7AK 6-Stage RO

The best value RO system—full 6-stage filtration with mineral addition at a mid-range price.

Special Deal Available — See Offer

Brondell H2O+ Circle

The best under-sink filter for long filter life—2 years between replacements.

Price Drop Alert — View Deal Now

Our Methodology

We test each under-sink filter for contaminant reduction, installation ease, and long-term cost. No manufacturer has editorial influence.

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