Brand comparison
Aquasana vs Crystal Quest
Aquasana scores 5.6 across 18 products; Crystal Quest scores 4.8 across 30. They overlap in whole house, under sink, and shower & faucet. That is 78% of what Aquasana sells and 53% of what Crystal Quest sells. Aquasana leads on certification coverage, Crystal Quest on value.
All 18 Aquasana products
Aquasana
18 of 18 products scored · $120 – $6,640
Buy Now- Certification Coverage — 7.0 against 2.0
- Warranty & Support — 3.0 against 1.0
- Contaminant Reduction — 8.0 against 7.0
All 30 Crystal Quest products
Crystal Quest
30 of 30 products scored · $40 – $2,389
Buy Now- Value — 5.0 against 3.5
- Build Quality — 7.0 against 6.0
- Ease of Installation — 6.0 against 5.0
Across everything we scored, Aquasana sits 0.87 ahead — led by certification coverage.
Both brands also sell into Well Water, Countertop, and Reverse Osmosis. Neither side carries enough scored products there for a median we would publish, so this comparison does not cover them.
Brand verdict
ahead · +0.87 (5.6 vs 4.8)
Pick Aquasana when
Certification coverage matters most7.0vs2.0
Pick Crystal Quest when
Value matters most5.0vs3.5
Scored 11 November 2026 from published specs and owner reviews. We don't buy or test units. How we score
Usability Aquasana and Crystal Quest, median scores 0 to 10
Median scores on a 0–10 scale.
Certification CoverageAquasana: 7 (higher)Crystal Quest: 2
Aquasana top-scored: Rhino Max Flow Whole House Water Filter, 1,000,000 Gallons
No notes for this one.
Crystal Quest top-scored: Whole House Reverse Osmosis System
- Crystal Quest says every system is tested before shipping and quotes a 15 to 20 year life on regular maintenance, and the 76 purchasable configurations mean the system can actually be specified rather than chosen.
- Against that, nothing in this line appears in any certifier database, the more than 95 percent TDS rejection figure is a manufacturer claim, and no system in the range publishes its recovery ratio or drain rate, which on whole-house RO is the number that determines the water bill.
- Warranty & SupportAquasana: 3 (higher)Crystal Quest: 1
ValueAquasana: 3.5Crystal Quest: 5 (higher)
Aquasana top-scored: Rhino Max Flow Whole House Water Filter, 1,000,000 Gallons
- Its weakest is that $800 buys flow and nothing else, because the media, the certification position and the maintenance schedule are unchanged from the cheaper system.
Crystal Quest top-scored: Whole House Reverse Osmosis System
No notes for this one.
Contaminant ReductionAquasana: 8 (higher)Crystal Quest: 7
Aquasana top-scored: Rhino Max Flow Whole House Water Filter, 1,000,000 Gallons
- The independent laboratory work on this platform measured 100 percent reduction of chlorine and of every disinfection byproduct detected, and equally found no reduction of aluminium, barium or fluoride.
Crystal Quest top-scored: Whole House Reverse Osmosis System
No notes for this one.
Build QualityAquasana: 6Crystal Quest: 7 (higher)
Aquasana top-scored: Rhino Max Flow Whole House Water Filter, 1,000,000 Gallons
- The 57 inch tank needs more vertical clearance than the standard Rhino, which is the practical constraint most likely to decide the purchase.
Crystal Quest top-scored: Whole House Reverse Osmosis System
No notes for this one.
Ease of InstallationAquasana: 5Crystal Quest: 6 (higher)
Aquasana top-scored: Rhino Max Flow Whole House Water Filter, 1,000,000 Gallons
No notes for this one.
Crystal Quest top-scored: Whole House Reverse Osmosis System
- Storage is effectively mandatory above light use and adds 1,700 dollars or more.
Same score
Flow RateAquasana: 5Crystal Quest: 5
Aquasana top-scored: Rhino Max Flow Whole House Water Filter, 1,000,000 Gallons
- Its strongest attribute is throughput: 14 GPM against 7, on the same 1,000,000 gallon or ten-year tank.
Crystal Quest top-scored: Whole House Reverse Osmosis System
- The 300 GPD standalone at 2,227 dollars is the entry point and the useful comparison, since it undercuts most competing point-of-entry RO by a wide margin, while a 1,000 GPD unit with a 220 gallon tank lands near 5,800.
- Filter LifeAquasana: 5Crystal Quest: 5
Social score about Aquasana and Crystal Quest
Independent sources pooled per brand. N of M = how many scored products carry the brand-level reading shown, out of all scored.
RedditAquasana: 5Crystal Quest: 7 (higher)
Aquasana
Read the full summary
- Aquasana is discussed across roughly thirty distinct events on r/WaterTreatment, r/HomeImprovement, r/Plumbing, r/water and r/BuyItForLife, and the split is consistent: owners are positive on taste and clarity and negative on reliability.
- Leaks are the brand's signature failure mode and carry nine independent threads, including a three-year-old whole-home post-filter housing that split along a manufacturing seam and flooded a basement, and a T-pipe fitting failure that became a water-damage claim.
- Pressure loss carries six threads and filter-replacement cost another six.
- Neutral and adversarial framings both run.
- Scored down twice: the pool describes different hardware, and no thread discusses this system.
Brand rollup across scored products. 2 of 18 scored products carry this reading.
Crystal Quest
Read the full summary
- No thread on the refrigerator inline line was located.
- The brand pool is r/WaterTreatment, r/Plumbing and r/HydroHomies: an installer vouches for the under-sink RO having fitted several, a Plumbing commenter runs a 14-stage whole-house setup and rates the difference, and a HydroHomies build uses the SMART cartridge as its last stage.
- Volume is low and a bare brand-name search on Reddit is dominated by a 1987 Macintosh game of the same name.
Brand rollup across scored products. 1 of 30 scored products carry this reading.
Owner reviewsAquasana: 5Crystal Quest: 6 (higher)
Aquasana
Read the full summary
- No retailer lists HealthShield, so the figure is the brand's third-party profiles, and two independent ones agree.
- Trustpilot reads 1.5 out of 5 from 172 reviews distributed 77 percent one-star against 8 percent five-star, with 39 of them inside the past twelve months The profile has been claimed since 2021, shows no recent history of the company inviting reviews, and Aquasana has replied to 100 percent of the negatives.
- The Better Business Bureau carries 1.42 from 33 customer reviews on a non-accredited file alongside an A+ letter rating, which measures complaint handling rather than satisfaction.
- Both profiles are unsolicited and self-select toward complainants, and the brand's retailer listings run far higher, so this is a floor on service sentiment rather than a verdict on the hardware.
Brand rollup across scored products. 2 of 18 scored products carry this reading.
Crystal Quest
Read the full summary
- Trustpilot reads 4.0 from 54 reviews with 37 in the past twelve months, bimodal at 50 percent five-star against 39 percent one-star.
- Crystal Quest solicits reviews and has answered 83 percent of the negatives.
- BBB Kennesaw is the disagreeing second profile at 1 out of 5 from six customer reviews against an A plus accreditation, with the complaints concentrated on post-sale support, returns and a 30 percent restocking fee rather than on any product of this size.
Brand rollup across scored products. 1 of 30 scored products carry this reading.
Same score
GoogleAquasana: 6Crystal Quest: 6
Aquasana
Read the full summary
- Nothing independent covers this platform.
- The only writing about it is Aquasana's own launch release, which states the system is certified to NSF/ANSI 53 and 401 for PFAS, VOCs, BPA and ibuprofen and adds, in its own words, that it is internally tested to reduce 97.4 percent of chlorine and chloramines - so the two headline percentages are the brand's own and sit outside the certified set.
- A certifier row readable through a third party confirms Standard 53 for five named PFAS compounds plus chloroform as a VOC, at 5.7 gpm over 165,000 gallons, and carries a pretreatment condition that influent aluminium must be reduced before treatment.
- The 401 and CSA B483.1 rows could not be confirmed at a certifier source.
Brand rollup across scored products. 2 of 18 scored products carry this reading.
Crystal Quest
Read the full summary
- Coverage credits the catalogue breadth and the published pricing, and repeats the certification finding: the media inside holds real NSF/ANSI listings, no finished Crystal Quest system appears at NSF, IAPMO or WQA, and the reduction percentages are brand laboratory data.
- Nothing written anywhere examines the inline fluoride products.
Brand rollup across scored products. 1 of 30 scored products carry this reading.
YouTubeAquasana: 5Crystal Quest: 5
Aquasana
Read the full summary
- Independent video coverage of Aquasana is substantial and every tested system is a Rhino, a Claryum, a countertop or a SmartFlow.
- No video covers HealthShield at product, line or brand level.
- The only HealthShield footage on the platform is Aquasana's own two launch videos, at 267 and 101 views, and they are first-party and excluded.
- One brand-tagged creator short exists whose channel and date could not be established.
- Scored down for describing different hardware.
Brand rollup across scored products. 2 of 18 scored products carry this reading.
Crystal Quest
Read the full summary
- The independent video testing on this brand is confined to the bath filter, the faucet mount and the countertop reverse osmosis unit.
- Nothing covers the refrigerator inline line, and the videos that name it are roundups reciting the product page with a discount code attached.
Brand rollup across scored products. 1 of 30 scored products carry this reading.
AmazonAquasana: 6Crystal Quest: 6
Aquasana
Read the full summary
- Neither WH-HS nor WH-HS-UVM has an Amazon listing - a marketplace search on the product name returns the Rhino range and competing brands, and a search on the model code returns no products at all, so this is an absent listing rather than a listing with no ratings.
- The brand panel is the fallback and it renders in both of its forms across Aquasana's listings: the scoreable proportion reading is 80 percent of brand ratings at 4-plus stars over 50,000-plus orders in the trailing three months, and the badge reading on the same ASINs gives 10,000-plus raters with no denominator.
- Scored down twice for scope: the panel is collected across cartridges, shower filters and under-sink units, and this is a platform sold direct only.
Brand rollup across scored products. 2 of 18 scored products carry this reading.
Crystal Quest
Read the full summary
- The refrigerator in-line systems are all listed and all under the ten-review floor — 4.3 from 4 on the arsenic, 4.6 from 10 on the nitrate, 4.3 from 6 on the fluoride — which is a real presence with no readable pool.
- The fallback is the Amazon brand-insights panel, which reads 4.3 from over a thousand ratings with 5,000-plus orders in the trailing three months and prints 4.2 on a minority of listings, collected on bath, shower, faucet and pitcher goods rather than plumbed hardware.
- Scored down for that distance and for the spread of the product-level readings it stands in for.
Brand rollup across scored products. 1 of 30 scored products carry this reading.
The scores above are our reading of the evidence below. This is the evidence.
Certifications are recorded per product as published by the manufacturer. Anything carrying a NSF/ANSI standard can be checked against NSF's own certified product listings.
Certifications held
Aquasana
18 of 18
Crystal Quest
30 of 30
Warranty terms
Aquasana
18 of 18
Crystal Quest
30 of 30
What only Aquasana sells — and only Crystal Quest
Not a loss for either brand. If you need one of these, the choice is already made.
Only Aquasana
Nothing outside the shared categories.
Only Crystal Quest
Best Aquasana vs best Crystal Quest, category by category
The three best-scoring products each brand sells in every category they both compete in, ranked by overall score.
Whole House
See all Whole House productsShared: 5 · Aquasana only: 4 · Crystal Quest only: 3
Contaminants — Shared: Disinfectants & byproducts, Heavy metals, Sediment & particulate, Industrial & agricultural chemicals, Pharmaceuticals & microplastics. Aquasana only: Hardness & scale, Microbiological, PFAS, Taste & odour. Crystal Quest only: Fluoride, Nitrate & nitrite, Dissolved solids.
37th of 55 in Whole House
Strengths
- 14 GPM rated flowdouble the standard Rhino and enough for up to six bathrooms
- Independently lab-tested at 100% reduction of chlorine and of all three detected disinfection byproducts
- 1,000,000 gallon or 10-year capacityunchanged from the standard Rhino
- No electricitydrain line or back flushing required
Drawbacks
- $800 more than the standard Rhino for flow rate alonenot better filtration
- Independent certification covers chlorinenot lead, PFAS or chloramines
- 57 inch tank height needs more vertical clearance than the standard Rhino
- Pre-filter needs replacing roughly every 2 months
30th of 55 in Whole House
Strengths
- Nine capacities from 300 to 7,000 GPDsized against bathroom count
- Storage tank kits of 165220 and 500 gallons available on every capacity
- Brass or stainless rotary vane pumps1.5 HP horizontal pumps on larger units
- Crystal Quest states every system is tested in-house before shipping
Drawbacks
- No NSFIAPMO or WQA listing, so the 95 percent TDS rejection claim is unverified
- No published recovery ratio or drain rate anywhere in the range
- Storage tank kits add 1,700 dollars or more and are effectively mandatory above light use
- No published prefilter or membrane replacement interval
WH-1010-CT-UVM-BLM
Aquasana Rhino Max Flow with Conditioner, UV, Bypass and Pre-Filter
$6,640
Buy Now38th of 55 in Whole House
Strengths
- Filter tank tested to NSF/ANSI 42 at 14 GPM for up to 97% chlorine reduction
- UV certified to NSF/ANSI 55 Class B for up to 99.8% of bacteria and viruses
- Salt-free conditioner controls scale without salta drain line or demineralisation
- Pro-grade bypass kit allows filter changes without shutting off the house supply
Drawbacks
- No bundle discountthe price is the individual upgrades summed exactly
- Chlorine remains the only certified reduction claim on the filter tank itself
- Four components to siteso the installation footprint is substantial
- UV lamp is an annual replacement and draws mains power continuously
50th of 55 in Whole House
Strengths
- Media blend described in genuine detailincluding catalytic GAC for chloramine
- One million or 1.5 million gallon capacity with automatic backwash
- 9 to 11 or 10 to 13 GPM service flowreal household figures
- Sized against bathroom count rather than a vague person count
Drawbacks
- PFAS listed among treated contaminants with no reduction percentage or listing
- No NSFIAPMO or WQA record under the brand name
- No media replacement interval publishedonly a gallon capacity
- Salt-free conditioner stage more than doubles the price
43rd of 55 in Whole House
Strengths
- Independently lab-tested at 100% reduction of chlorine and of all three detected disinfection byproducts
- Tested to NSF/ANSI Standard 42 for up to 97% chlorine reduction
- 1,000,000 gallon or 10-year capacitythe longest interval in its price class
- No electricitydrain line or back flushing required
Drawbacks
- Independent certification covers chlorinethe wider 78-contaminant list is not separately certified
- Rated 7.0 GPM suits up to 2.5 bathrooms onlylarger homes need the Max Flow
- Pre-filter needs replacing roughly every 2 monthspost-filter every 6
- The 10-year warranty covers the tankthe install kit and filter housings are covered for 1 year
51st of 55 in Whole House
Strengths
- Point-of-entry fluoride reductionwhich very few manufacturers offer at all
- Media chemistry explained specifically rather than named as a marketing blend
- Automatic backwash9 to 11 or 10 to 13 GPM service flow
- One million or 1.5 million gallon capacity
Drawbacks
- No NSFIAPMO or WQA listing on a 1,665 dollar fluoride reduction claim
- No media replacement interval publishedonly a gallon capacity
- Stainless tank adds 578 dollars and the SMART stage adds 1,619
- No published port or connection size for the tank
Under Sink
See all Under Sink productsShared: 6 · Aquasana only: 2 · Crystal Quest only: 3
Contaminants — Shared: Disinfectants & byproducts, Heavy metals, Sediment & particulate, Microbiological, Industrial & agricultural chemicals, Pharmaceuticals & microplastics. Aquasana only: PFAS, Asbestos. Crystal Quest only: Fluoride, Nitrate & nitrite, Taste & odour.
5th of 20 in Under Sink
Strengths
- WQA tested and certified to NSF/ANSI 4253 including P473, and 401
- 99.7% PFOA and PFOS reductiontested to 20 parts per trillion
- 99.6% microplastics and lead99.995% cysts
- Retains calciummagnesium and potassium rather than stripping all minerals
Drawbacks
- 500 gallons or six months is the shortest cartridge life in the under sink range
- 0.5 GPM rated flow is slow for filling pots and bottles
- 1-year limited warranty
- Needs a spare sink hole for the dedicated faucetor the Direct Connect instead
11th of 20 in Under Sink
Strengths
- 0.2 micron ultrafiltration membrane at the head of the stack, no power or drain needed
- Three capacity steps at twenty dollars eachup to 30,000 gallons
- Eight stages combining UFredox alloy, ion exchange resin and carbon
- Suits RVscabins, boats and rentals where RO is impractical
Drawbacks
- No NSF/ANSI 53 or P231 listingso the microbiological claim is unverified
- Maximum flow of 0.5 GPM
- No dimensions published for the assembly
- Housing material is not disclosed on the product page
6th of 20 in Under Sink
Strengths
- 5 micron pre-filter protects the Claryum cartridges from rust and sediment
- 600 gallons20% more capacity than the 2-Stage
- Same WQA certification to NSF/ANSI 4253 including P473, and 401 as the 2-Stage
- 99.7% PFOA and PFOS reductiontested to 20 parts per trillion
Drawbacks
- $100 more than the 2-Stage for 100 extra gallons and a pre-filter
- Contaminant reduction figures are identical to the cheaper 2-Stage
- 0.5 GPM rated flowunchanged from the 2-Stage
- Three cartridges to replace instead of two
12th of 20 in Under Sink
Strengths
- SMART media blend is broader than the single carbon block typical at this price
- Three configurations spanning 60 dollarsall on one page
- Catalytic carbon in the blendwhich is what actually handles chloramine
- Full operating envelope published including connection size and pressure range
Drawbacks
- Maximum flow of 0.5 GPM is slow for a kitchen tap
- No NSFIAPMO or WQA listing on any configuration
- No published cartridge replacement interval or capacity
- Housing material is not disclosed on the product page
7th of 20 in Under Sink
Strengths
- No dedicated faucet or sink hole requiredfilters through the existing tap
- 1.5 GPMthree times the flow of the 2-Stage
- IAPMO tested and certified to NSF/ANSI 4253 including P473, and 401
- 784 gallonssecond only to the 3-Stage Max Flow
Drawbacks
- No sediment pre-filtrationand independent testing recorded it clogging when rust came through the line
- Reduction figures trail the dedicated-faucet systems95% PFOA and PFOS against 99.7%
- All cold water through that tap is filteredso cartridge life goes on dishwashing too
- Owner reports centre on leaks at the dual-port adapter and reduced cold-water pressure
13th of 20 in Under Sink
Strengths
- Nitrate-selective anion exchangewhich carbon-only systems cannot do
- Capacity published as a number5,500 ppm nitrate
- Three configurations on one page spanning 72 dollars
- Full operating envelope published including connection size and pressure range
Drawbacks
- No NSF/ANSI 53 nitrate reduction listing on a contaminant where that matters most
- No stated influent limit or effluent target for nitrate
- The single configuration does not address chlorine or chloramine at all
- Maximum flow of 0.5 GPM is slow for a kitchen tap
Shower & Faucet
See all Shower & Faucet productsShared: 1 · Crystal Quest only: 4
Contaminants — Shared: Disinfectants & byproducts. Crystal Quest only: Heavy metals, Sediment & particulate, Well-water minerals, Taste & odour.
3rd of 15 in Shower & Faucet
Strengths
- 92% recommend rate at Home Depotthe highest on any Aquasana product
- Supplied head is matched to the 2.5 GPM the filter is rated at
- Highest design score of ten shower filters in independent testing
- Ongoing cost of just over half a cent per gallonscored 9.75 on maintenance
Drawbacks
- Independent testing measured chlorine down 57%against a stated category expectation of 80% minimum
- Not certified for chlorine reductionthe 90%-plus figure is Aquasana's own testing
- Placed second from last of ten filters in independent testing and was omitted from the following year's round-up
- Chlorine onlyno reduction claim for lead, PFAS or chloramines
8th of 15 in Shower & Faucet
Strengths
- Drop-down cartridge holds more media than puck-style shower filters
- About a year of cartridge liferoughly double the category norm
- 5.75 foot flexible hose with three-way adjustable spray
- Reversible cartridge uses the bed from both ends
Drawbacks
- No NSF/ANSI 177 listingthe only shower filtration standard that exists
- Cartridge life is given as about a year with no gallon capacity to check it against
- Housing material is not disclosed on the product page
- Chrome and gold finishes cost eight dollars more for no filtration difference
4th of 15 in Shower & Faucet
Strengths
- Independently tested to NSF/ANSI Standard 177 and media certified to NSF/ANSI Standard 61
- Highest design score of ten shower filters in independent testing, with the sturdiest housing in the group
- Ongoing cost of just over half a cent per gallonscored 9.75 on maintenance
- Cheapest entry to the range at $119.99and keeps the shower head already fitted
Drawbacks
- Independent testing measured chlorine down 57%against a stated category expectation of 80% minimum
- Not certified for chlorine reductionthe 90%-plus figure is Aquasana's own testing
- Hardness fell barely 1% in independent testingand zinc rose above the laboratory's health guideline
- Performance degrades with shower heads above about 2.5 GPM, and nothing on the unit indicates it
9th of 15 in Shower & Faucet
Strengths
- Eight finish and head combinations at a four dollar spread
- Cartridge interval published honestly at 6 to 12 months rather than a gallon figure
- 2 GPM rated flow keeps a normal shower feel
- Reversible cartridge extends usable life
Drawbacks
- No NSF/ANSI 177 listingthe only shower filtration standard that exists
- No published chlorine reduction percentage at any flow rate
- Housing material is not disclosed anywhere on the product page
- One-year limited warranty and filter media cannot be returned
6th of 15 in Shower & Faucet
Strengths
- Handheld wand suits seated showeringrinsing down and washing pets
- Independently tested to NSF/ANSI Standard 177 and media certified to NSF/ANSI Standard 61
- Highest design score of ten shower filters in independent testing
- Available in chrome or whitewith white $10 cheaper for the same hardware
Drawbacks
- $50 more than the filter-only version for hardwarenot filtration
- Independent testing measured chlorine down 57%against a stated category expectation of 80% minimum
- Not certified for chlorine reductionthe 90%-plus figure is Aquasana's own testing
- Chlorine onlyno reduction claim for lead, PFAS or chloramines
11th of 15 in Shower & Faucet
Strengths
- Fixed head and handheld wand on one divertersharing a single cartridge
- Drop-down cartridge holds more media than puck-style shower filters
- About a year of cartridge life
- 5.75 foot flexible hose with three-way adjustable spray
Drawbacks
- No NSF/ANSI 177 listingthe only shower filtration standard that exists
- The most expensive shower filter in the range with identical media to the cheapest
- Cartridge life is given as about a year with no gallon capacity to check it against
- Housing material is not disclosed on the product page
Aquasana vs Crystal Quest: the numbers
Aquasana vs Crystal Quest: common questions
Is Aquasana or Crystal Quest better?
Aquasana 5.6 from 18 scored products; Crystal Quest 4.8 from 30.
What is the biggest difference between Aquasana and Crystal Quest?
Certification Coverage: Aquasana medians 7.0, Crystal Quest medians 2.0 (Aquasana by 5.0).
Which is better for warranty & support, Aquasana or Crystal Quest?
Aquasana on warranty & support — Aquasana 3.0, Crystal Quest 1.0.
Which is better for value, Aquasana or Crystal Quest?
Crystal Quest on value — Aquasana 3.5, Crystal Quest 5.0.
What does Crystal Quest make that Aquasana does not?
Crystal Quest sells specialty and water softeners; Aquasana does not, in the products we scored.
Which Aquasana and Crystal Quest whole house should I buy?
Aquasana: Aquasana Rhino Max Flow Whole House Water Filter, 1,000,000 Gallons. Crystal Quest: Crystal Quest Whole House Reverse Osmosis System.
How does Stuff VS Things score Aquasana and Crystal Quest?
Our own product medians: 18 Aquasana and 30 Crystal Quest. A criterion is compared only where both brands clear the floor.
Other comparisons
Scores calculated 11 November 2026 · Products excluded where fewer than two independent sources cover them · · How we score