What living with it looks like
Day to day, there is nothing to do. The CF1 is a passive system: water goes through a 5-micron sediment cartridge, then a tank of KDF and catalytic carbon, and out to the house. No drain, no power, no backwash schedule to program. Twice a year or so you shut the bypass, unscrew the sediment housing and drop in a new cartridge, which takes about as long as changing a furnace filter.
The 9 GPM service flow is SpringWell's figure for homes with up to three bathrooms. In practice, that covers a shower, the dishwasher and a sink running together. If your family's mornings involve three showers at once, the 12 GPM CF4 exists for exactly that reason, and the price gap is shown on the same SpringWell page.
The catch
Paperwork. SpringWell lists chlorine, chloramine, PFOA and PFOS among the CF1's targets and guarantees chlorine and chloramine below detection for 6 years or 1 million gallons, but it does not name a certification on the product page. Aquasana, by comparison, publishes an independent NSF/ANSI 42 test for the Rhino. If PFAS is the reason you are buying, ask SpringWell for the test data before you order.
Also worth knowing: SpringWell ran a 15% Veterans Day sale on November 9, 2026 ($1,160.25 for the CF1). We score the regular $1,365 price, so the deal on the day you buy may be better than our number.
How it scores
The SpringWell CF1 gets 8.9/10 (very good) with our filter score weights. Each criterion below is scored out of 10 from SpringWell's published figures and the price we checked; a criterion without a figure is left out and the other weights are rescaled. The scales are on the methodology page.
| Criterion | Weight | Score /10 | Bar |
|---|---|---|---|
| Flow rate | 15% | 7.0 | |
| Media life | 15% | 10.0 | |
| Yearly upkeep | 15% | 9.1 | |
| Contaminants covered | 15% | 9.0 | |
| Certification | 10% | 2.0 | |
| Warranty | 10% | 10.0 | |
| Return window | 5% | 8.5 | |
| Price | 15% | 6.0 |
Full specifications
As published by SpringWell on its US pages, read on November 9, 2026. Values the brand does not publish are left out rather than guessed.
| Type | Whole house filter, city water |
|---|---|
| Model compared | CF1 · Core size (CF1), 1-3 bathrooms |
| Bathrooms (brand sizing) | 1-3 |
| Flow rate | 9 GPM (service flow stated) |
| Media life | 10 years or 1,000,000 gal |
| Contaminants claimed by the brand | Chlorine, Chloramine, PFAS, Sediment, Organic chemicals (pesticides, VOCs) |
| Certification | No certification named on the product page; SpringWell guarantees chlorine and chloramine below detection for 6 years or 1 million gallons |
| Yearly upkeep | 5-micron sediment filter 2-pack ($45.57) a year, one cartridge every 6 to 9 months |
| Drain and power | Neither needed |
| Connection | 1" |
| Size | Sized 9 GPM (CF1), 12 GPM (CF4) or 20 GPM (CF+) |
| Warranty | Lifetime warranty against defects (tanks, valves, heads) |
| Return window | 6-month money-back guarantee; the return policy asks for unused items in original packaging |
| Checked price | $1,365 at SpringWell on November 9, 2026. SpringWell showed a 15% Veterans Day sale on Nov 9, 2026 ($1,160.25 for the CF1). |
Buying advice
Buy it from SpringWell directly: that is where the lifetime warranty and the 6-month money-back promise apply. Read the return terms first, because SpringWell asks for unused items in the original packaging, which rules out a "try it installed" return. Budget a plumber if you are not comfortable cutting into the main line, and add a bypass loop if your installer does not include one.
- KDF, catalytic carbon and a 5-micron sediment filter
- Media rated for 1,000,000 gallons or 10 years
- SpringWell names chlorine, chloramine and PFAS (PFOA, PFOS) among its targets
Alternatives to consider
Aquasana Rhino8.7Very good · out of 10If you want an independent NSF/ANSI 42 test behind the chlorine claim, at a higher price and upkeep.
Waterdrop WHF3T-PG8.4Good · out of 10If $1,365 is too much up front and you can live with a cartridge set every year.
SpringWell WS18.6Very good · out of 10If you are on a well with iron, manganese or a sulfur smell.
Head-to-heads
Questions about the SpringWell CF1
Does the SpringWell CF1 remove PFAS?
SpringWell says so: it lists PFOA and PFOS among the CF1's targets. It does not name a certification for that claim on the product page, so ask SpringWell for the performance data if PFAS is your main concern.
How often do you change the SpringWell CF1 filter?
The sediment cartridge every 6 to 9 months, per SpringWell, and the carbon media after 1,000,000 gallons or 10 years. The sediment 2-pack cost $45.57 on November 9, 2026.
Is the SpringWell CF1 good for well water?
Not on its own. It is designed for city water with chlorine or chloramine. For iron, manganese or hydrogen sulfide, SpringWell sells the WS1 well water system.
Sources
Official pages read on November 9, 2026: www.springwellwater.com/product/water-filters/whole-house-water-filters · www.springwellwater.com/warranty · www.springwellwater.com/product-category/replacements. Product image: SpringWell.