Head-to-head · updated November 9, 2026
SpringWell CF1 vs iSpring WGB32B
Short answer: the SpringWell CF1 is the better long-term buy, with a lifetime warranty, chloramine and PFAS named and about $46 a year of upkeep. The iSpring WGB32B is the right call if $1,365 is out of reach today or you need 15 GPM of flow in a cartridge system.
SpringWell CF1 Whole House Water Filter
8.9Very good · out of 10- 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
Better on 6 of 8 comparable lines · $1,365 on November 9, 2026
iSpring WGB32B 3-Stage Whole House Filter
8.3Good · out of 10- 5-micron sediment stage then two coconut-shell CTO carbon blocks
- Up to 99% chlorine plus herbicides and industrial solvents, per iSpring
- Up to 15 GPM; 100,000 gallons or 12 months per set
Better on 2 of 8 comparable lines · $516.99 on November 9, 2026
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Spec by spec
| Criterion | SpringWell CF1 | iSpring WGB32B |
|---|---|---|
| Calculated score | 8.9/10 | 8.3/10 |
| Checked price | $1,365 | $516.99 |
| Flow rate | 9 GPM | 15 GPM peak |
| Media life | 10 years or 1,000,000 gal | 6 months |
| Yearly upkeep | $45.57 a year | $251.98 a year |
| Contaminants claimed | Chlorine, Chloramine, PFAS, Sediment, Organic chemicals (pesticides, VOCs) | Chlorine, Sediment, Organic chemicals (pesticides, VOCs) |
| Certification | None stated | Independent lab test |
| Drain and power | Neither needed | Neither needed |
| Connection | 1" | 1" NPT |
| Warranty | Lifetime | 1 year |
| Return window | 180 days | 30 days |
★ marks the better figure on that line (8 lines can be compared). Specs as published by the brands; prices checked on November 9, 2026.
What the numbers mean
This is tank against cartridges. The CF1 costs $848 more on day one, but its yearly sediment pack is $45.57, against $125.99 to $251.98 for the iSpring set depending on how often you change it. At the short interval, the iSpring catches up with the CF1 in about four years.
The other differences: SpringWell names chloramine and PFAS; iSpring does not. SpringWell gives a lifetime warranty and 6 months to change your mind; iSpring 1 year and 30 days. iSpring states a higher flow (15 GPM peak against 9 GPM service), which matters only in bigger homes.
Our pick for each kind of buyer
iSpring WGB32B
The iSpring WGB32B costs $848 less than the SpringWell CF1 up front, at prices checked on November 9, 2026.
Read the review →SpringWell CF1
The SpringWell CF1 scores 8.9/10 against 8.3/10 with our published formula.
Read the review →SpringWell CF1
Replacement parts for the SpringWell CF1 cost about $45.57 a year, against $251.98 for the iSpring WGB32B, at each brand's shortest stated interval.
Read the review →SpringWell CF1
SpringWell claims 5 contaminant groups for the SpringWell CF1 (chlorine, chloramine, PFAS, sediment and organic chemicals (pesticides, VOCs)), against 3 for the iSpring WGB32B.
Read the review →iSpring WGB32B
The iSpring WGB32B is rated for 15 GPM peak against 9 GPM: more showers and appliances can run at once before pressure drops.
Read the review →SpringWell CF1
Warranty on the SpringWell CF1: lifetime; on the iSpring WGB32B: 1 year (head or valve, where there is one).
Read the review →Questions
Which is better, the SpringWell CF1 or the iSpring WGB32B?
With our published formula, the SpringWell CF1 scores higher (8.9 vs 8.3/10). The right pick still depends on your water and your house: see the picks by profile on this page.
What is the price difference between the SpringWell CF1 and the iSpring WGB32B?
On November 9, 2026, the SpringWell CF1 was $1,365 at SpringWell (core size (cf1), 1-3 bathrooms) and the iSpring WGB32B $516.99 at iSpring (3-stage big blue 20" x 4.5"). Installation is extra in both cases unless you do it yourself.
Is a tank or cartridge whole house filter better?
A tank costs more up front and less to keep; a cartridge system is the reverse. Over five years, the CF1 and the WGB32B end up within a few hundred dollars of each other at the iSpring short interval, and the CF1 keeps going.