Aquasana Water Filters Review 2026: Every System Ranked (Plus the Trustpilot Problem)
Aquasana's filters, ranked on certification and running cost: SmartFlow, Claryum, Rhino, shower filter, SimplySoft. Plus the 1.5-star Trustpilot score and the dropped lawsuit.
By Home Water Lab TeamUpdated Prices verified Oct 7, 2026
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Aquasana makes some of the best-documented drinking water filters you can buy online, and one whole house filter whose paperwork is thinner than its marketing. Ranked on certification and running cost rather than on the day's banner, the SmartFlow reverse osmosis system and the Claryum under-sink filters come out on top, the Rhino lands in the middle, and the SimplySoft conditioner comes last. If you're shopping reverse osmosis systems for the kitchen or whole house filters, this is the brand's full lineup in one place.
The short answer
as of Oct 19, 2026Are Aquasana water filters any good?
Yes for drinking water, with caveats elsewhere. The SmartFlow RO is WQA-certified to NSF/ANSI 42, 53, 58, 401 and CSA B483.1, and the Claryum under-sink line to 42, 53 and 401. The standard Rhino whole house filter is only described as tested, not certified, to NSF/ANSI 42, and SimplySoft doesn't appear on Aquasana's certified products page at all. On Oct 19, 2026 every price sat at list (Rhino $1,998, SmartFlow $449.99), Trustpilot showed 1.5 out of 5 across 172 reviews, and a class action over its discount advertising had been filed in 2025, then voluntarily dismissed.
Key takeaways
- SmartFlow RO: WQA-certified to five standards, $449.99 at list on Oct 19 and $224.99 on sale on Oct 26, 2026, out of stock both days.
- Claryum under-sink filters: certified to NSF/ANSI 42, 53 and 401 by WQA, or by IAPMO for the Direct Connect.
- Rhino whole house: tested, not certified, to NSF/ANSI 42; the Rhino Max Flow is listed as certified.
- Prices swing on a banner: the Rhino read $999 on Sep 21, $1,998 on Oct 19 and $999 again on Oct 26, 2026.
- Trustpilot 1.5/5 (172 reviews), BBB grade A but not accredited, 49 complaints in 3 years.
Is Aquasana a Good Water Filter Brand?#
For the water you drink, yes, and the reason is paperwork. Aquasana's certified products page lists the SmartFlow as "WQA tested and certified to NSF/ANSI 42, 53, 58, 401, and CSA B483.1," and the Claryum 2-Stage, 3-Stage and 3-Stage Max Flow as WQA-certified to 42, 53 and 401. The Clean Water Machine countertop unit carries the same three, and the Claryum Direct Connect is certified by IAPMO.
The same page is more careful about the rest. The standard Rhino is "independently tested to NSF/ANSI Standard 42 for up to 97% chlorine reduction," with its tank certified by WQA to NSF/ANSI/CAN 61, the standard for materials in contact with drinking water. The shower filters are tested to NSF/ANSI 177. SimplySoft isn't on the page. Tested means the data exists; certified means a third party keeps checking it.
The Aquasana lineup, on paper
as of Oct 19, 2026- SmartFlow RO+ CSA B483.1WQA tested and certified to NSF/ANSI 42, 53, 58 and 401, plus CSA B483.1, per Aquasana's certified products page.
- Claryum 3-StagecarbonWQA certified to NSF/ANSI 42, 53 and 401, like the 2-Stage and the 3-Stage Max Flow. Carbon, no membrane, so no NSF/ANSI 58.
- Direct ConnectIAPMOIAPMO certified to NSF/ANSI 42, 53 and 401. Its data sheet lists PFOA and PFOS at the older 70 ppt level, against 20 ppt on the dedicated-faucet Claryums.
- Clean Water Machineno plumbingWQA tested and certified to NSF/ANSI 42, 53 and 401, per the same page.
- RhinotestedIndependently tested to NSF/ANSI 42 for up to 97% chlorine reduction; the tank is WQA certified to NSF/ANSI/CAN 61. The Rhino Max Flow is listed as tested and certified to 42.
- Shower filtertestedIndependently tested to NSF/ANSI 177 for up to 90% chlorine reduction. NSF's own listing shows no Aquasana shower model.
Solid dot: certified, per Aquasana's certified products page. Half dot: tested to the standard but not described as certified. Ring with a bar: no claim on that page. Read Oct 19, 2026. WQA and IAPMO directories could not be read directly; the certifications are Aquasana's own statements.
How We Ranked Every Aquasana System#
On three things that don't move with a banner: what each system is certified to, what it costs to keep running, and whether it fits the job people buy it for. Aquasana's prices have doubled and halved within weeks, so a ranking built on the day's price would change by the morning, which our Aquasana Rhino review documents in detail. Year-two cartridge prices for each system are listed in our Aquasana filter replacement cost guide.
| Rank | System | Price at list, Oct 19, 2026 | Certified to | Best for |
|---|---|---|---|---|
| 1 | SmartFlow RO | $449.99 | 42, 53, 58, 401 | Lead, PFAS, fluoride, dissolved solids |
| 2 | Claryum 3-Stage and Direct Connect | $349.99 and $249.99 | 42, 53, 401 | Chlorine, taste, lead, no wastewater |
| 3 | Clean Water Machine | $399.99 | 42, 53, 401 | Renters, no plumbing |
| 4 | Rhino | $1,998 | Tested to 42 | Chlorine at every tap, small homes |
| 5 | Shower filter | $119.99 to $169.99 | Tested to 177 | Chlorine in the shower |
| 6 | SimplySoft | $1,758 | Not listed | Scale only, and only on a sale day |
1. SmartFlow RO: The Best Aquasana Filter#
The SmartFlow is the brand's strongest product and one of the best-certified under-sink RO systems we track. Five named certifications, including NSF/ANSI 53 for PFAS and 58 for reverse osmosis, and a remineralizer included at no extra charge. Our Aquasana reverse osmosis review sets the SmartFlow against the retired OptimH2O and the new pumped HealthShield RO.
Aquasana
Aquasana SmartFlow Reverse Osmosis System
Best for: Drinking-water protection (PFAS, fluoride, lead) at the best certifications-per-dollar ratio on the market
- Contaminants reduced
- 99.99% of 90 contaminants
- PFAS / fluoride / arsenic
- 96% PFAS (P473), 90% fluoride, 96% arsenic
- Production
- 25.7 gallons/day
- Faucet flow
- 0.7 GPM
- Design
- Compact holding tank (3.2 gallons total, 1.4 to 3.2 usable), remineralizer included
- Filter schedule
- Cartridges 6 months, membrane 12 months
Three things to know before buying. It isn't tankless: Aquasana's own FAQ gives a holding tank of 1.4 to 3.2 gallons and 0.7 GPM at the faucet. It costs about $310 a year in cartridges at single-unit prices, read Oct 12, 2026. And it read $449.99 and out of stock on Oct 19, against $224.99 on sale on Oct 5. How it ranks against iSpring and Waterdrop is in our best reverse osmosis systems, and whether RO water is worth drinking at all is in our look at what the science says about RO water.
2. Claryum Under-Sink Filters: Best for Chlorine and Taste#
The Claryum line is the right Aquasana buy when you want filtered drinking water without a membrane, a drain line or wastewater. All four models share Aquasana's Claryum media and differ in capacity and flow.
Aquasana
Aquasana Claryum 3-Stage Under Sink Water Filter (AQ-6300)
Best for: The in-stock way into the Claryum pre-filter design, for households that drink a few gallons a day
- Type
- 5-micron sediment pre-filter plus two Claryum carbon cartridges, no membrane
- Rated service flow
- 0.5 GPM, through a dedicated faucet
- Cartridge life
- 600 gallons or 6 months
- Operating pressure
- 20 to 80 psi
- Certification
- WQA to NSF/ANSI 42, 53 (PFOA/PFOS to 20 ppt) and 401
- Replacement set
- $83.99 every 6 months (Oct 12, 2026)
The Direct Connect screws onto your existing faucet line at 1.5 GPM and suits renters; the 3-Stage adds a sediment pre-filter and a dedicated faucet. Cartridges run about $148 to $184 a year on Aquasana's unit prices. The model-by-model breakdown, including the PFAS threshold gap between the Direct Connect and the rest, is in our Aquasana under-sink filter review.
3. Clean Water Machine: Best With No Plumbing#
The countertop Clean Water Machine read $399.99 on Oct 19, 2026, and it is WQA-certified to the same three standards as the Claryum line. It needs no installation, which makes it the renter's option. For a wider field of no-plumbing units, see our countertop water filter picks. Its data sheet, filter life and five-year cost are in our full Clean Water Machine review.
4. Rhino Whole House Filter: Fine Hardware, Thinner Paperwork#
The Rhino is a sound whole house carbon filter that we rank below the drinking water systems for two reasons. Aquasana describes the standard model as tested, not certified, to NSF/ANSI 42, and its total cost depends on a pre-filter every 2 months and a sealed tank that gets replaced rather than re-bedded.
Aquasana
Aquasana Rhino Whole House Water Filter (1,000,000 Gallons)
Best for: Small city-water homes (up to 2.5 bathrooms) that want brand-name whole-house filtration for under $1,000
- Capacity
- 1,000,000 gallons or 10 years
- Flow rate
- 7.0 GPM nominal / 14.6 GPM peak
- Chlorine reduction
- 97% (tested to NSF/ANSI 42)
- Contaminants addressed
- 78
- Height
- 46"
- Max pressure
- 100 psi
It is rated at 7 GPM for homes up to 2.5 bathrooms, and an installer measured it in the low 5 GPM range after a year (Mid Atlantic Water, July 2026). Bigger homes need the Rhino Max Flow, $2,798 at list on Oct 19, which Aquasana does list as certified to NSF/ANSI 42. At $1,998 the Rhino costs $837.75 more than the SpringWell CF1 at $1,160.25 (Nov 9, 2026); at $999 on a banner day, $161.25 less. The full duel is in SpringWell vs Aquasana, and whether a main-line filter suits your house at all is the subject of whether a whole house filter is worth it.
5. Shower Filter: Good for Chlorine, Nothing Else#
The shower filter does one job reasonably: it reduces free chlorine. Aquasana tests it to NSF/ANSI 177 for up to 90% chlorine reduction, but NSF's own listing shows no Aquasana model, and no shower filter softens water.
Aquasana
Aquasana AQ-4100 Shower Filter
Best for: Renters and first-time buyers who want chlorine out of their shower without touching the plumbing
- Capacity
- 10,000 gallons / ~6 months
- Media
- KDF copper-zinc + coconut shell carbon
- Chlorine reduction
- 90%+
- Version
- Without shower head (best seller)
The no-head version read $119.99 at list on Oct 19 and $74.99 on sale on Oct 5. Its cost per shower and its limits on chloramine are in our Aquasana shower filter review.
6. SimplySoft: Last, Because It Doesn't Soften#
SimplySoft is a salt-free conditioner, and Aquasana's own page says it doesn't need to remove the hard minerals. Scale may still form on glass and fixtures, and your hardness test won't change.
Aquasana
Aquasana SimplySoft Salt-Free Water Conditioner
Best for: City-water homes that want low-cost scale control without salt, and understand it is not a softener
- Technology
- SCM (Scale Control Media)
- Capacity
- 1,000,000 gallons / 10 years
- Flow rate
- 7.0 GPM nominal / 15.3 GPM peak
- Operation
- No salt, no electricity, no drain, no backflush
It read $1,758 on Oct 19, 2026 and $879 on Sep 21, and it doesn't appear on Aquasana's certified products page. If scale prevention without salt is really what you want, our salt-free water softener rankings compare it with SpringWell's and Kind's.
Why Does Aquasana Have Bad Reviews?#
Mostly because of service, not filtration. On Oct 19, 2026, Trustpilot gave Aquasana a TrustScore of 1.5 out of 5 across 172 reviews, 77% of them one star; the BBB grade was A, with the company not accredited and 49 complaints over three years.
Aquasana's reputation, dated
as of Oct 19, 2026- Trustpilot TrustScore
- 1.5 / 5, 172 reviews
- One-star share
- 77%
- Reviews in the last 12 months
- 37
- BBB grade
- A, not accredited
- BBB complaints, 3 years
- 49
Trustpilot and BBB profiles read Oct 19, 2026. On Aug 28, 2026 they showed 170 reviews and an A+ grade with 47 complaints.
The recurring themes in recent reviews are warranty claims that drag on, leaking housings and fittings, Water for Life shipments and charges people didn't expect, and restocking fees on returns. To Aquasana's credit, Trustpilot shows it replying to all of its negative reviews, usually within 48 hours.
How to buy Aquasana without the usual problems
Buy on a sale day, or not at all
Prices have doubled and halved within weeks. If the banner is down, wait or compare against SpringWell and iSpring at that day's price.Pay by credit card
It gives you a dispute route if a return or refund stalls, which is one of the most common Trustpilot complaints.Treat Water for Life as optional
The 15% filter discount is real, but check each shipment against your calendar and cancel if the timing is wrong.Photograph the install
Leaks are a recurring complaint. Photos of fittings and dates make a warranty claim far easier.
What Is the Aquasana Lawsuit About?#
Its discount advertising. A proposed class action, Fox et al. v. A.O. Smith Water Treatment (North America), Inc., was filed in June 2025 in federal court in the Southern District of California, alleging the company advertised discounts off artificially inflated regular prices and as available for a limited time. The court docket shows a notice of voluntary dismissal on Oct 31, 2025, though Truth in Advertising still listed the case as pending on Oct 19, 2026.
The claims were allegations and no court ruled on them. They do line up with what we've recorded: a "50% off" banner that has come down and gone back up several times since August, on the same products. That is exactly why every Aquasana price on this site carries a date, and why we rank on certifications and running cost instead.
Where Aquasana is strong
- Full certification lists on its drinking water systems
- A remineralizer included on the SmartFlow
- A 90-day satisfaction guarantee on systems
- Owned by A.O. Smith since 2016
Where it is weak
- Prices that swing with a banner, the subject of a 2025 lawsuit
- Trustpilot 1.5 out of 5, mostly about service
- Standard Rhino tested, not certified
- SimplySoft doesn't soften water
Our call
Buy Aquasana for drinking water, on a sale day, with a credit card. For the whole house, compare the Rhino against a SpringWell CF1 at that day's prices.
Not sure which kind of system your water needs? Our quiz matches your water to a treatment type in a few questions.
Aquasana's certified products page, product and category pages, and Water for Life page, all read Oct 19, 2026; earlier Aquasana readings from Aug 28, Sep 12, Sep 21, Oct 5 and Oct 12, 2026 logged on this site; Trustpilot and BBB profiles read Oct 19, 2026; Truth in Advertising's class action entry for Aquasana products, read Oct 19, 2026; the CourtListener docket for case 3:25-cv-01552 (S.D. Cal.), read Nov 9, 2026; NSF International listings read Oct 12, 2026; SpringWell CF1 price read Nov 9, 2026. We have not bench-tested these systems.
Aquasana questions people ask
Are Aquasana reviews trustworthy?
The product ratings on Aquasana's own site are gathered by the seller. Independent profiles tell a different story: Trustpilot showed 1.5 out of 5 across 172 reviews on Oct 19, 2026, mostly about service, warranty claims and the Water for Life subscription rather than about filtration.
Is Aquasana NSF certified?
Its drinking water systems are certified to NSF/ANSI standards by WQA or IAPMO, not by NSF International itself. NSF's own listing showed one Aquasana entry, for UV systems under NSF/ANSI 55, on Oct 12, 2026. A standard and a certifier are different things.
Does Aquasana remove fluoride?
Look at the SmartFlow reverse osmosis system: reverse osmosis removes most fluoride, per the American Dental Association. The Claryum carbon filters don't, and Aquasana doesn't claim they do.
Is Aquasana better than SpringWell?
For drinking water under the sink, Aquasana has the stronger certification list. For whole house filtration, the SpringWell CF1 wins on flow, maintenance and five-year cost in our head-to-head, and its price doesn't swing with a banner.
Frequently asked questions
Is Aquasana a good water filter brand?
For drinking water, yes. The SmartFlow RO is WQA-certified to NSF/ANSI 42, 53, 58, 401 and CSA B483.1, and the Claryum under-sink filters to 42, 53 and 401, which is a stronger paper trail than most direct-to-consumer brands publish. The weak spots are the standard Rhino, which Aquasana describes as tested rather than certified to NSF/ANSI 42, and customer service: Trustpilot showed 1.5 out of 5 across 172 reviews on Oct 19, 2026.
What is the lawsuit against Aquasana?
A proposed class action, Fox et al. v. A.O. Smith Water Treatment (North America), Inc., was filed in June 2025 in the Southern District of California (No. 3:25-cv-01552). It alleged that the company advertised discounts off inflated regular prices, and as available for a limited time. The court docket shows a notice of voluntary dismissal filed on Oct 31, 2025, so the claims were never decided. Truth in Advertising still listed the case as pending when we read it on Oct 19, 2026.
How long do Aquasana filters last?
It depends on the system. Claryum under-sink cartridges are rated for 500 to 800 gallons or 6 months, and the shower filter cartridge for 10,000 gallons or 6 months. The Rhino whole house tank is rated for 1,000,000 gallons or 10 years, with a pre-filter every 2 months, and the tank is sealed, so you replace it rather than re-bed it.
What is Aquasana Water for Life?
A free auto-ship subscription for replacement filters. Aquasana's page promises a 15% discount on replacement filters, free shipping, an extended limited warranty, no contract and cancellation anytime; on Oct 19, 2026, product pages also showed a Water for Life price 20% below list. Unexpected shipments and charges are one of the recurring complaints on Trustpilot, so set a reminder to check each order.
Is Aquasana owned by A.O. Smith?
Yes. A.O. Smith, the water heater maker, has owned Aquasana since 2016. The company is based in Haltom City, Texas, and its BBB profile gives a founding date of September 15, 1997.
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