Pentair FloPlus Protect 20BB Whole House PFAS System review
By Daryna Klochko · Published · Specs checked Oct 15, 2026 · 
Scores 9.5/10, tied for 1st of the 12 whole-house systems we track. At $258 it is the cheapest of the 10 whole-house systems with a published price, against a category median of $854.12. IAPMO lists it for PFOA, PFOS and 3 more PFAS, one of 3 whole-house systems out of 12 with a certifier listing for a health claim. Pentair also claims Chlorine, Cysts, which are not in the listing.
A tight budget: $258, the cheapest of the 10 whole-house systems with a published price
A long warranty matters: 1 year, under the 10-year category median
- Price
- $258
- Certified for
- PFAS
- Flow
- 5 gpm
- Cartridge life
- 40,000 gal claimed
- Cost per year
- $187
- Warranty
- 1 year
Certification
Listed by IAPMO under NSF/ANSI 53 for PFOA, PFOS and 3 more PFAS, checked Oct 15, 2026. Pentair also claims 2 more substances that are not in the listing. Search the IAPMO listings
- PFOA, PFOS and 3 more PFAS
Pentair also claims Chlorine, Cysts: brand claims, not in a certifier listing.
The contaminants or other substances removed or reduced by this water treatment device are not necessarily in your water. Listing checked on Oct 15, 2026. What a listing means and what it doesn't
Specs and sources
Checked Oct 15, 2026 · source under each valueFiltration
Cartridges and install
Buying
Warranty, returns and shipping
Warranty: 1 year. Returns: 30 days. Shipping: not stated by the brand. Source: Pentair data sheet, checked Oct 15, 2026.
Source: Pentair data sheet, checked Oct 15, 2026.
Compared with similar whole-house systems
All 12 whole-house systems →| Model | Price | Certified for | Cost per year | Warranty | Score | Where to buy |
|---|---|---|---|---|---|---|
| Pentair FloPlus Protect 20BB Whole House PFAS SystemTHIS MODEL | $258 | PFAS | $187 | 1 year | 9.5/10 | Check price → |
| A. O. Smith AO-WH-FILTER Whole House Water Filter | $399.99 | Chlorine | — | 6 years limited | 8.25/10 | Check price → |
| 3M Aqua-Pure AP904 Whole House System | $424.71 | Chlorine | $325 | 25 years | 9.5/10 | See specs → |
| Express Water WH300SCGS 3-Stage Whole House, Essential | $497.99 | Brand claims only | $215 | 1 year | 8.75/10 | Check price → |
| Express Water WH300SCKS 3-Stage Whole House, Heavy Metals | $547.99 | Brand claims only | $336 | 1 year | 8.5/10 | Check price → |