iSpring WGB32B 3-Stage Whole House Water FilterCarbon filter · product record
- Maker’s list price
- $517
- Five years
- $1,651
- Service flow
- 15 gpm
- Built for
- City or well water
- Connections
- 1 in. FNPT
Listings checked Oct. 4, 2026.
No certification found
Not on any listing: NSF, WQA, IAPMO, checked Oct. 4, 2026
TapBuff searched the certifiers’ own listings and found nothing for this product. That does not mean it does not work. It means no independent certifier has confirmed what it reduces, so every claim below is the maker’s alone.
Certified for, and claimed
Certified, by a listing
Nothing.
Claimed by the maker only
- chlorine (up to 99%)
- sediment down to 5 microns
- rust
- taste and odor
- herbicides
- THMs and VOCs
Certification claims we could not find on a listing
- Maker says its carbon block filters are "tested by a third-party to meet NSF/ANSI standards"; testing is not certification. NSF lists iSpring only for reverse osmosis systems.
What it costs over five years
Household of 3, 240 gallons a day through the whole house. Installation not included.
| Item | Replaced | Count | Amount |
|---|---|---|---|
| System, with first media | — | 1 | $517 |
| Replacement set F3WGB32B (one FP25B sediment, two FC25B carbon block) | Every 6 monthsmonth rating | 9 | $1,134 |
Five-year total$1,651
Per gallon0.4¢
Worth knowing
Three 20 x 4.5 inch cartridges: 5-micron sediment, then two coconut carbon blocks. The maker says it suits city or well water but does not remove bacteria or viruses, and recommends a UV stage on wells. It does not reduce hardness. The 15 gpm figure is the maker's "up to" flow. The maker gives 6 to 12 months for the replacement set; the shorter figure is recorded. The page showed $516.99 with a 15% code on Oct. 4, 2026; the $516.99 price is recorded.
Install requirements
- Kind
- Carbon filter
- Rated media life
- Up to 100,000 gallons or 12 months (carbon block)
- Needs a drain
- Not stated
- Needs power
- Not stated