REAL PRICE HISTORY — NOT SALE-TAG THEATER
Water-treatment brands love permanent 30–55% off banners. FilterTier tracks the real observed selling price over time, builds a normal range, and tells you whether today's price is actually low, typical or high.
TRACKED NOW
Ranges tighten as weekly observations accumulate. A single observation is labeled as insufficient history instead of pretending we know the market.
Aquasana
Typical observed range: about $2,600–$2,900
Typical / upper end
Observed low: ~$2,608
The $5,796 reference MSRP is not treated as the real comparison price.
View system →SpringWell
Typical observed range so far: about $3,600–$4,020
Typical sale range
Observed low: ~$3,615
Recurring sitewide discounts are treated as normal market pricing, not a special event.
View system →iSpring
Price tracking started; range not established yet
Insufficient history
Observed low: ~$750
Low purchase price, but replacement cartridges are a bigger part of the ownership-cost story.
View system →Aquasana
Base-system tracking started; UV/conditioner bundles tracked separately
Insufficient history
Observed low: ~$1,399
Like-for-like configurations are kept separate so a base tank is not compared with a UV bundle.
View system →US Water Systems
20 GPM pricing varies by standalone / GreenWave / Matrixx bundle
Insufficient history
Each size and bundle needs its own history because the included treatment stages change materially.
View system →Dealer systems
Dealer pricing is tracked by comparable configuration when public quotes are available
Dealer market
Dealer-only pricing gets a confidence label instead of an invented retail number.
View system →HOW FILTERTIER SCORES PRICE
The actual listed/check-out price we can verify for the same configuration today.
The tight band where the product normally sells after enough weekly observations exist.
The lowest like-for-like observed price in our tracking history — not an unrelated size or bundle.
Purchase + cartridges/media + UV lamps + salt + known major replacements. Cheap equipment can become expensive ownership.
If a product is always advertised at 50% off, the sale price effectively becomes its normal price. FilterTier only calls something a deal when the observed price is actually low relative to its own history.
UPDATED WEEKLY
FilterTier checks current manufacturer/retailer prices weekly, records like-for-like observations, and flags new historical lows or moves of roughly 5% or more. Bundle changes are kept separate so the data stays useful.
New historical low · meaningful price increase · meaningful price decrease · normal price range shifts · promo code that actually beats the normal range · configuration changes that make old price history incomparable.
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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