Home › Refrigerator Water Filters › Whirlpool › TIER1-RWF1040
Water Filter for the Whirlpool TIER1-RWF1040 (EDR4RXD1)
✓ 100% compatible — no bypass plug needed
🔧 5-min push-in swap
🇺🇸 Ships from Indiana
Every cartridge that fits this model — pulled live from the catalogue:
✓
TIER1-RWF1040 specifics — where the filter actually lives
Finding the bay is the easy part — this chassis puts it in the fresh-food compartment — exact spot varies by dispenser layout — usually a kneeling-height or shoulder-height swap, not a teardown. Mechanically it is a quarter-turn twist-in seat: the cartridge drops into the keyed seat and locks with a short quarter turn.
Field notes: a first removal that fights a set o-ring, and a status light that needs a manual hold-to-reset before it acknowledges the new cartridge. One more anchor for the parts search: the EDR4RXD1 cartridge family is what every fit listing for this chassis resolves to, OEM and certified alternative alike. Read the 40 ending as a revision marker — Tier1 used it for running changes, none of which touched the EDR4RXD1 bay.
Reading the TIER1-RWF1040 model code — what the digits tell you
Working from the model code, the TIER1-RWF1040 lands somewhere around 2009 to 2013; treat the window as approximate. Fit listings tell the same story: every trim of this model resolves to the EDR4RXD1 family, OEM and certified alternative alike.
Swap it in 5 minutes
- Twist the old cartridge a quarter turn counterclockwise and pull it straight down — keep a towel in reach for the dribble.
- Fill the new cartridge with cold tap water so the chamber is not fighting an air pocket.
- Offer the new cartridge to the bay, push up, and twist a quarter turn clockwise until the stop catches.
- Run two gallons through the dispenser to flush carbon fines, then hold the filter-reset control until the status light clears.
What this filter takes out of your water
| What it targets | Standard that covers it |
|---|---|
| Chlorine taste & odor | NSF/ANSI 42 — aesthetic effects |
| Particulates, Class I | NSF/ANSI 42 — fine sediment |
| Lead | NSF/ANSI 53 — health effects |
| Cysts (cryptosporidium, giardia) | NSF/ANSI 53 — microbial |
| PFOA & PFOS | NSF/ANSI 53 (P473) — varies by cartridge |
Coverage above lists what the standard addresses, not a performance claim for any specific cartridge — removal claims vary by certificate, so check the NSF listing for the exact part number you are buying.
TIER1-RWF1040 filter questions
Tier1 TIER1-RWF1040: how do I clear the change-filter light?
Hold the filter-reset control a few seconds after the swap; the status light clears only with a seated cartridge, and the TIER1-RWF1040 manual maps the control by panel type.
TIER1-RWF1040 with no water filter installed — safe, or does it need a bypass?
No — run it empty if you like; the EDR4RXD1 bay needs no bypass plug, it simply passes water through untreated.
Are off-brand filters safe for a Tier1 refrigerator?
Certified aftermarket cartridges are built to the same NSF test standards as the OEM part, and federal warranty law (Magnuson-Moss) protects your coverage when you use them.
Why is the OEM EDR4RXD1 cartridge so much more expensive?
Part of the OEM price is the badge and the distribution chain. Certified alternatives meet the same test standards at a lower unit price, especially in multi-packs.
How often should I replace the filter in my TIER1-RWF1040?
Every six months or at the rated gallon capacity, whichever comes first — the EDR4RXD1 class cartridges all share that service interval.
Do I need to turn off the water supply to change it?
No — the bay is designed for a live swap. Expect a small dribble, keep a towel in reach, and flush a couple of gallons through the new cartridge before the first glass.
Every filter that fits your fridge
| Cartridge | OEM EDR4RXD1 | RECOMMENDEDUKF8001 Replacement Water Filter · 1-Pack – ClearFit | EDR4RXD1 EveryDrop Filter 4 Replacement · 1-Pack – ClearFit | UKF8001 Replacement Water Filter · 3-Pack – ClearFit |
|---|---|---|---|---|
| Price | OEM list | $17.99 | $17.99 | $44.97 |
| Verified fit | ✓ the bay cartridge | View & buy → | View & buy → | View & buy → |
This filter expires six months from today
Your HVAC filter is probably on a different cycle. Track them all in one place.
months until this filter should be replaced (200-gal rated life)
Free tool · tracks fridge + HVAC + whole-house · auto-refill optional
More models using this filter
Related guides
POPULAR GUIDE
How to change a Whirlpool refrigerator water filter
Every Filter 1–6 bay location — including the door-mounted bays on WRX models, with door-open angles and cap-release quirks. — read the guide →
POPULAR GUIDE
How to reset your Whirlpool filter light
Filter 1–6 indicator maps showing which key actually clears the light on your panel. — read the guide →
WATER PROBLEM GUIDE
Does your fridge filter remove fluoride?
What EDR1RXD1-class carbon blocks actually take out — and the systems that do remove fluoride. — read the guide →