Tier1 EFF-6027S
A NSF-certified refrigerator filter that is certified to reduce 6 contaminants, including lead at about 10.3¢ per gallon.
As an Amazon Associate we earn from qualifying purchases — disclosure. Price as of July 15, 2026; check Amazon for the current price.
You want filtered water and ice from your fridge dispenser with zero installation.
Certified to reduce Lead — the contaminants that matter most for health.
Convenient, but the cost per gallon is higher than an under-sink system, and you'll replace the cartridge about 2× a year.
What is refrigerator filter? The snap-in cartridge that filters the water and ice from your refrigerator’s dispenser. Compare all filter types →
What it costs to own
| Upfront price | $30.99 |
| Replacement filter (TIER1-RWF1011P) | Find replacement → |
| Estimated yearly cost (filters, ~2×/yr) | ~$62/yr |
| True cost per gallon | 10.3¢ |
Cost per gallon and yearly cost are our estimates from the rated capacity and current prices. The filter only works if you replace it on schedule.
What it's certified to remove
Certification is per-contaminant: the Tier1 EFF-6027S is credited only for the contaminants listed here, verified by NSF. It does not imply removal of anything not listed.
✓ Verify this certification on the official NSF listing →
Full specifications
| Certified by | NSF |
| NSF/ANSI standards | 42 — reduces taste, odor, and chlorine (aesthetic standard) · 53 — certified for health contaminants such as lead, VOCs, and cysts · 401 — reduces emerging contaminants such as pharmaceuticals and pesticides |
| Filter type | Refrigerator filter |
| Rated capacity | 300 gallons |
| Flow rate | .5 gpm |
| Replacement element | TIER1-RWF1011P |
| Installation | Snaps into your refrigerator. No tools. |
Frequently asked
Is the Tier1 EFF-6027S NSF certified?
Yes — the Tier1 EFF-6027S is listed in the NSF certified-product database under NSF/ANSI standards 42, 53, 401. That means an independent body verified its claims (not just "tested to" a standard).
Does the Tier1 EFF-6027S remove lead?
Yes. It is certified to reduce Lead, plus 5 other contaminants. Certification is per-contaminant, so it is only credited for what is on its listed claim set.
What does the Tier1 EFF-6027S remove?
It is certified to reduce 6 contaminants: Chlorine / chloramine, Cryptosporidium, Giardia, Lead, Mercury, Volatile organics.
How much does the Tier1 EFF-6027S cost per gallon?
About 10.3¢ per gallon, based on its rated capacity of 300 gallons and current price.
How often do you replace the refrigerator filter?
A refrigerator filter like this is typically replaced about 2 times a year (replacement element TIER1-RWF1011P). Replace on schedule — a spent cartridge stops reducing contaminants.
Compare similar refrigerator filters
Source: NSF public certification listing. Specs and certified claims are from the official listing; cost figures are our estimates. Some links are affiliate links — see our disclosure.