Certified PFAS reduction for the whole house.

This is the kit built around the FloPlus Protect cartridge — the one whole-house cartridge in its class with a certification we could verify end to end. The cartridge is certified by IAPMO R&T to NSF/ANSI 53 for the reduction of five PFAS compounds: PFOA, PFOS, PFHxS, PFNA and PFHpA, with a rated capacity of 40,000 gallons at 5.0 GPM — about twelve months of typical whole-house use.

The kit is complete: the cartridge, a standard 20-inch Big Blue housing, mounting bracket and housing wrench — the same cartridge-and-housing pairing the certification is written on. It drops into standard whole-house plumbing, so in most homes it upgrades the system you already have.

• IAPMO R&T certified to NSF/ANSI 53 — PFOA, PFOS, PFHxS, PFNA, PFHpA
• Rated capacity 40,000 gallons at 5.0 GPM
• Complete kit: cartridge + 20″ Big Blue housing + bracket + wrench
• Overall size: about 23½″ high × 7¼″ wide (standard #20 Big Blue housing) — allow clearance below to swing the sump down for cartridge changes
• Feed pressure 30–90 psi (manufacturer specifications)
• Connections: 1-inch FPT on the standard US kit — the Big Blue housing family also offers 3/4-inch and 1½-inch ports; tell us your line size when you order and we match the housing
• Fits standard whole-house installations

Honest limits, printed on purpose: certification covers the five named compounds, not every PFAS chemical; and a lab result of "not detected" means below that lab's reporting limit — not zero. Your Tandem report always states the reporting limit.

Best for: homes whose water test shows any of the five certified compounds, and households that want certified PFAS reduction at every tap.
Not for: well water with sediment, iron or manganese ahead of it (pre-treatment first — it fouls the cartridge early), or very high-demand homes without a sizing conversation.

From Tandem: we match it to your PFAS panel result, install it, and track its service life — because a PFAS cartridge only protects while it is within its rated life.