Aquasana
SmartFlow reverse osmosis 2
System model AQ-SFRO2
An under-sink RO configuration with separate carbon, membrane and remineralizer replacements.
Use the exact documented model and replacement configuration. Similar model names do not establish equivalent claims.
Document review ·
- Rated capacity
- 250 gal
- Service flow
- Not specified
- Replacement items
- 3
Documented recovery: 42.8%. Recovery, efficiency and waste-to-product ratios measure different conditions; see the source.
Replacement filters
Claims below apply to AQ-SFRO2 + AQ-SFRO-S1S3 + AQ-SFRO-S2 + AQ-SFRO-REMIN as a complete configuration. Physical fit alone does not establish certified performance.
250 gallons / 6 months. Replace at the earlier of the documented volume or time limit; follow source instructions for any earlier replacement triggers. Capacity / component source
No gallon limit in captured instructions / 12 months. The captured maintenance instructions specify a time interval for this stage; no stage-specific gallon limit was found. Capacity / component source
No gallon limit in captured instructions / 6 months. The captured maintenance instructions specify a time interval for this stage; no stage-specific gallon limit was found. Capacity / component source
Complete three-part replacement configuration. The two carbon stages are sold as one kit. The captured PDS rates daily production at 25.7 gpd; this is not an instantaneous service-flow or daily-use limit. Recovery 42.8% and efficiency 27.4% use different test definitions. Nitrate/nitrite reduction requires at least 40 psi and the source-specific influent limits. Verify feed-water arsenic and other operating conditions.
Reduction claims
WQA certification stated in the manufacturer document. The registry was not independently checked. Only captured source-supported claims are shown; laboratory performance is not a guarantee for your water.
| Reduction claim | NSF/ANSI | Evidence |
|---|---|---|
| Chlorine | 42 | Source ↗ |
| Chloramine | 42 | Source ↗ |
| Particulate Class I | 42 | Source ↗ |
| Asbestos | 53 | Source ↗ |
| Cyst | 53 | Source ↗ |
| Lead | 53 | Source ↗ |
| Mercury | 53 | Source ↗ |
| MTBE | 53 | Source ↗ |
| PFOA/PFOS | 53 | Source ↗ |
| VOC | 53 | Source ↗ |
| Atenolol | 401 | Source ↗ |
| Bisphenol A | 401 | Source ↗ |
| Carbamazepine | 401 | Source ↗ |
| DEET | 401 | Source ↗ |
| Estrone | 401 | Source ↗ |
| Ibuprofen | 401 | Source ↗ |
| Linuron | 401 | Source ↗ |
| Meprobamate | 401 | Source ↗ |
| Metolachlor | 401 | Source ↗ |
| Naproxen | 401 | Source ↗ |
| Nonylphenol | 401 | Source ↗ |
| Phenytoin | 401 | Source ↗ |
| TCEP | 401 | Source ↗ |
| TCPP | 401 | Source ↗ |
| Trimethoprim | 401 | Source ↗ |
| Microplastics | 401 | Source ↗ |
| Arsenic (pentavalent) | 58 | Source ↗ |
| Barium | 58 | Source ↗ |
| Cadmium | 58 | Source ↗ |
| Chromium (hexavalent) | 58 | Source ↗ |
| Chromium (trivalent) | 58 | Source ↗ |
| Copper | 58 | Source ↗ |
| Fluoride | 58 | Source ↗ |
| Radium 226/228 | 58 | Source ↗ |
| Selenium | 58 | Source ↗ |
| TDS | 58 | Source ↗ |
| Nitrate/Nitrite | 58 | Source ↗ |
| Turbidity | 58 | Source ↗ |
Materials & structural scope
No separate materials-only record captured. This does not mean the system lacks materials certification.
Unlisted contaminants have no captured claim here. An absent catalog claim does not prove absence of certification.
Annual filter cost
- AQ-SFRO-S1S3 · 2 units / year$183.98
- AQ-SFRO-S2 · 1 units / year$62.99
- AQ-SFRO-REMIN · 2 units / year$62.98
Some stages have only a published time or gallon limit. This estimate uses the captured limits; follow flow, indicator and other earlier replacement triggers in the instructions.
For each item: round up the larger of annual water use ÷ capacity and 12 ÷ replacement months, then multiply by quantity and unit price. This conservative full-year budget does not credit the filters supplied with a new system. Multi-pack prices are allocated per filter; buying whole packs can cost more. It excludes system purchase, hardware, optional upgrades, shipping, tax, labor, water and electricity. Editable prices are your assumptions.
Evidence & review
Reviewed 2026-09-21 · Codex document review. Document review, not independent laboratory testing.
Matched the exact system, replacement elements, claim-specific standard and operating limits against the archived source. This is an assisted document review, not laboratory testing or independent human certification.
Original source archived for the September 2026 document review. Check the document revision and model-specific conditions.
Original source archived for the September 2026 document review. Check the document revision and model-specific conditions.
AQ-SFRO-S1S3: $91.99 per 1 unit(s), observed 2026-09-21. Manufacturer MSRP effective April 2026, checked against the published price table. One complete replacement item/kit; subscription discount, tax and shipping excluded.
Use the New MSRP column, not the discounted Water for Life subscription column.
AQ-SFRO-S2: $62.99 per 1 unit(s), observed 2026-09-21. Manufacturer MSRP effective April 2026, checked against the published price table. One complete replacement item/kit; subscription discount, tax and shipping excluded.
Use the New MSRP column, not the discounted Water for Life subscription column.
AQ-SFRO-REMIN: $31.49 per 1 unit(s), observed 2026-09-21. Manufacturer MSRP effective April 2026, checked against the published price table. One complete replacement item/kit; subscription discount, tax and shipping excluded.
Use the New MSRP column, not the discounted Water for Life subscription column.
Follow the source document’s water-quality limits and conditions of use. Household filtration does not replace required disinfection.