SpringWellCF1 Whole House Water Filter System, 9 GPM
Four-stage ActivFlo whole house filter for 1-3 bathrooms at 9 GPM, with 1,000,000 gallon media capacity and a lifetime warranty.
$1,105
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Usability
Usability
The CF1's case is running cost and longevity: a million gallons of media life, no salt, no electricity, no wastewater, and one $40 pre-filter change every six to nine months. Against a cartridge system that needs $130 a year in filters, it pays back the difference over a decade. The weak point is 9 GPM, which is genuinely tight for three bathrooms running simultaneously, and the absence of a published NSF certification for the complete system.
- 1,000,000 gallon media capacity, roughly ten years before replacement
- Independent Tap Score testing took THMs from 31.83 ppb to non-detect over three years
- Measured 8.8 GPM at the manifold with three fixtures running simultaneously
- Only maintenance is a 5 micron pre-filter every 6-9 months at about $40
- No salt, no electricity and no wastewater
- Upflow ActivFlo design extends media contact time and prevents channeling
- Lifetime warranty on tanks, valves and media
- 6-month money-back guarantee, unusually long for this price bracket
- DIY installation kit included; most owners fit it without a plumber
- 9 GPM service flow is tight if three bathrooms run at once
- No published NSF/ANSI certification for the complete system; SpringWell describes components as certified
- High entry price against cartridge systems that filter comparably for less upfront
- Does not soften water; scale control needs a separate conditioner or softener
- Not for microbiologically unsafe water without separate UV treatment
- SpringWell's permanent discount framing makes the reference price hard to read
- The 6-month guarantee carries a 25% restocking fee plus return shipping
The SpringWell CF1 is the entry size of SpringWell's ActivFlo whole house filter, built for homes with one to three bathrooms and rated at 9 GPM service flow. Water passes through four stages: an upflow design that eliminates channeling and extends contact time, a KDF copper-zinc bed that removes chlorine, a catalytic coconut carbon bed for organic contaminants, and a 5 micron sediment filter.
Media capacity is 1,000,000 gallons or roughly ten years, and the only routine maintenance is the 5 micron pre-filter every 6 to 9 months at about $40 for a two-pack. There is no salt, no electricity and no wastewater.
Independent long-term testing backs the claims: a three-year Tap Score study took total trihalomethanes from 31.83 ppb to non-detect, cut chlorine by 99.6 percent, and recorded pressure holding at 68 to 65 psi with no measurable flow loss.
The tank is 9 inches wide and 48 inches tall, 52 with the head, on a 1 inch connection at 25 to 80 psi. Step up to the CF4 for 4 to 6 bathrooms at 12 GPM, or the CF+ for 7 or more at 20 GPM, though note the CF+ moves to a 1.5 inch connection. SpringWell does not publish an NSF/ANSI certification listing, describing its components as certified rather than the system.
Additional information
Specification: SpringWell CF1 Whole House Water Filter System, 9 GPM
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Questions answered from our data
How much does a whole house water filter cost?The 55 whole house water filters we list run from $110 to $8,626, with a median of $1,105.
Do water filters remove PFAS?84 of the 296 systems we list claim to reduce PFAS.
Do water filters remove chlorine?217 of the 296 systems we list claim to reduce chlorine.
