FIND MY FILTER
FilterTier asks about your water, actual simultaneous demand, maintenance tolerance, replacement preferences, warranty needs and budget — then explains why each match does or does not fit.
LIVE WATERFIT FINDER
This live version currently ranks the verified/high-priority systems in the FilterTier database. As more models move from Catalogued to Verified, they automatically become eligible for the production scoring set.
STEP 1 · YOUR WATER
City / municipal water
Private well
Not sure yet
STEP 2 · YOUR CONCERNS
PFAS / forever chemicals
Chlorine
Chloramine
VOCs / chemicals
Hard water / scale
Lead
Iron / manganese
Sulfur / odor
Bacteria
Sediment
STEP 3 · WATER TESTING
Yes — I have test results
I have a city water-quality report
No — help me understand what to test
FUTURE FEATURE
The Finder can eventually parse common lab results and preselect the contaminants that matter for the recommendation.
STEP 4 · PEAK HOUSEHOLD DEMAND
This is where most filter finders oversimplify. FilterTier sizes around realistic simultaneous use, not just bedroom or bathroom count.
SHOWERS
1, 2, 3, 4+ simultaneous showers and each showerhead's approximate GPM.
LUXURY FIXTURES
Large master showers can use as much or more water than several standard showers.
OTHER DEMAND
Laundry, dishwashers, sinks and high-flow tub fillers can overlap with shower use.
EXAMPLE CALCULATION
Recommended service-flow target for a high-demand house after adding practical headroom.
STEPS 5–7 · OWNERSHIP PREFERENCES
MAINTENANCE
As little as possible
Annual maintenance is fine
Performance matters more than maintenance
REPLACEMENT
5–10 years
Every 2–3 years
Annually if performance requires it
WARRANTY
10+ years matters to me
5+ years is enough
Warranty is secondary to performance
HARD WATER
True salt-based softening
Salt-free scale conditioning
Either is fine
No hardness treatment needed
INSTALLATION
Professional plumber
Dealer-installed
DIY-friendly preferred
BUDGET
Under $1,500
$1,500–$3,000
$3,000–$5,000
$5,000–$8,000
$8,000+
YOUR RESULT
Results show WaterScore, Your Fit, required-vs-system flow, contaminant match, evidence quality, maintenance burden, major replacement timing, warranty fit and 10-year ownership cost.
Start My WaterFit →EXAMPLE MATCH
Excellent 20 GPM sizing for your demand. Strong maintenance profile. PFAS evidence is less robust than a fully certified exact-system claim.
20 GPM
Low maintenance
10-year media life
STEP 8 · PRICE & VALUE
Price is a major part of Your Fit. We compare today's real selling price with the product's normal observed range and also estimate the longer-term replacement burden.
UPFRONT BUDGET
Under $1,000
$1,000–$2,000
$2,000–$3,000
$3,000–$5,000
$5,000–$8,000
$8,000+
PRICE PRIORITY
Lowest upfront cost matters most
Lowest 10-year ownership cost matters most
Balance price and performance
Performance first — price is secondary
If a product is almost always sold at a huge discount from MSRP, FilterTier treats the recurring sale price as its normal price. A deal only looks good when today's observed price is actually low versus its own history.
STEP 9 · MANUFACTURING PREFERENCE
Country of origin can change Your Fit if you care about domestic manufacturing, but it does not automatically make a filter technically better.
Show every technically appropriate system regardless of manufacturing origin.
Boost personal fit for exact systems with strong U.S. manufacturing or final-assembly evidence.
Prefer North American manufacturing while still showing strong alternatives from other countries.
“U.S. company,” “designed in USA,” “assembled in USA with imported components,” and “Made in USA” are stored as different claims.
WHAT YOUR RESULTS SHOULD FEEL LIKE
FilterTier should explain why one system fits you better, what you give up by choosing it, and which alternative wins if you care more about evidence, price, flow or maintenance.
BEST FIT EXAMPLE
Typically ~$3,600–$4,020
20 GPM service flow gives a large home comfortable headroom, with very low routine maintenance and long media life.
It costs much more upfront than iSpring, and its PFAS evidence is not equivalent to a fully certified exact-system PFAS reduction claim.
BEST EVIDENCE EXAMPLE
Typically ~$2,600–$2,900
Stronger documented PFAS/VOC reduction evidence and a lower upfront price than the SpringWell Max configuration.
5.7 GPM certified/service flow is a poor match for a high-demand house, and the main filtration replacement burden is much higher.
BEST UPFRONT VALUE EXAMPLE
About $750 currently
Extremely low purchase price and much higher nominal flow than HealthShield; attractive for budget-conscious buyers.
Cartridge replacement costs add up, and SGS-tested PFAS media is not the same evidence category as full exact-system NSF/ANSI 53 certification.
Choose “certification matters most” and HealthShield can move up. Choose “four showers + lowest maintenance” and SpringWell can move up. Choose “keep purchase under $1,000” and iSpring can move up. FilterTier should show that logic instead of pretending there is one universal #1.
FilterTierEvidence-first whole-home water treatment comparisons built around your water, your house and your priorities.
FilterTier provides independent comparison and educational information, not medical, plumbing, engineering or legal advice. Product claims, certifications, specifications, prices, warranties and availability can change; verify current details with the manufacturer and use water testing and a qualified professional when appropriate. Some outbound links may be affiliate/referral links, which may earn FilterTier compensation without changing the price you pay or the scoring methodology.
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