EveryDrop Filter 4 goes by three names — Filter 4, EDR4RXD1, and its older UKF8001 number — and that is exactly why so many people end up with the wrong cartridge in their cart. This guide cuts through the naming mess: how to confirm in two minutes that the EDR4RXD1 is the filter your refrigerator takes, how to install it without the usual leaks and low-flow headaches, when to replace it, and what the genuine cartridge should actually cost.
Confirming You Need the EDR4RXD1
The part number beats the product name every time. Check any of these three places, in this order:
- Your old cartridge. Pull it out and read the label. EDR4RXD1, UKF8001, or 4396395 all point to the same replacement: Filter 4.
- Your manual. Look under “Water Filter” or “Replacement Parts” — the specified cartridge number is printed there.
- Your fridge model number. It is on the sticker inside the fresh food compartment. Match it against the compatibility list on the EDR4RXD1 product page before ordering.
Location is a useful sanity check too. On most models that take Filter 4, the housing sits inside the refrigerator, in the upper-right corner, often behind a small flip-down cover. If your filter is down in the base grille at the bottom front instead, you need a different EveryDrop filter — start with our EDR3RXD1 vs EDR4RXD1 comparison, which explains how to tell the EveryDrop models apart by housing and fridge style.
Part Numbers and Compatible Brands
The EDR4RXD1 is the current EveryDrop part number for this cartridge. It directly replaces:
| Your old part number | Notes |
|---|---|
| EDR4RXD1 | Current EveryDrop part number |
| UKF8001 | The older Whirlpool number — same cartridge |
| 4396395 | Earlier number found on older packaging and manuals |
| EDR4RXD1B | Minor revision — same fit and performance |
It fits select French door and side-by-side refrigerators from Whirlpool, Maytag, Amana, KitchenAid and JennAir. “Select” matters: two fridges from the same brand can take different filters, so let the part number — not the brand — make the final call.
How to Install Filter 4 (Without the Usual Problems)
Most Filter 4 installs take about five minutes, and almost every problem people report afterwards traces back to one of two steps: the cartridge not being fully seated, or a rushed flush. Here is the careful version; our dedicated walkthrough with the reset-button combinations for common models is how to replace EDR4RXD1 (UKF8001).
- Open the housing. Flip down the cover in the upper-right of the fresh food compartment (some models use a side-wall housing — same steps apply).
- Remove the old filter. Press the release button or pull the tab; the cartridge swings down or pops out partway. Slide it straight out. Keep a cloth handy for drips.
- Prep the new cartridge. Remove the protective cap and any seals from the new EDR4RXD1. Leaving a cap on is a classic cause of “no water at all” after an install.
- Seat it fully. Push the new filter in until you feel a firm stop or click. This is the step not to rush — a half-seated cartridge is the number one cause of leaks and weak flow.
- Flush the system. Dispense and discard 2–3 gallons of water. It may sputter or look cloudy at first; that is trapped air and loose carbon clearing out, and it settles as you flush.
- Reset the indicator. Use your model’s filter reset sequence (commonly, hold the Water Filter or Filter Reset button for 3 seconds) so the light tracks the new cartridge, not the old one.
Quick fixes if something feels off: slow flow right after installing usually means trapped air — flush longer, then re-seat the filter. A leak at the housing almost always means the cartridge is not fully home — remove it and push it in firmly. Off taste in the first glasses is a flushing issue; keep discarding until it tastes clean.
When Should You Replace Filter 4?
Plan on every 6 months, but let your water have the final say. Real life — a big household, a busy ice maker, harder local water — can wear a cartridge out faster than the calendar does.
| What you notice | What it means | What to do |
|---|---|---|
| Filter light turns orange or red | The fridge’s timer says time is up | Replace and reset the indicator |
| Water flow slows at the dispenser | The media is loaded and restricting flow | Replace — re-seating won’t fix a spent filter |
| Chlorine taste or odor returns | Carbon is exhausted | Replace and flush well |
| Ice tastes off or looks cloudy | Early warning sign | Replace sooner rather than later |
| Six months have passed | Normal service life reached | Replace even if everything seems fine |
An overdue filter does not just do less of its job — flow drops, taste slips, and the cartridge you are relying on for cleaner water becomes the weakest link in the line. Swapping on schedule is cheap insurance.
Genuine EDR4RXD1 vs Look-Alike Cartridges
Filter 4 attracts a crowd of compatible cartridges, some perfectly decent, some with seals that never quite fit. The genuine EDR4RXD1 is the cartridge Whirlpool itself specifies for these refrigerators: the housing fit is exact, the O-rings seal the way the fridge was designed for, and the filtration is the tested, certified performance the appliance was built around. With a generic, fit and seal quality vary by maker — and a poor seal lets unfiltered water bypass the cartridge entirely, which defeats the point of having one.
That does not mean you should overpay for genuine. It means you should buy genuine at a fair price.
What Filter 4 Should Cost
At Discounted Filter Store the genuine EDR4RXD1 is $39.99 one-time, with free US shipping on any order amount — no subscription and no minimum spend. It is also sold in 2, 3 and 4-packs, which lower the per-filter cost if you prefer to cover a year or two at once.
Set that against the usual alternatives: the official EveryDrop store charges $59.99, or $48 if you commit to a subscription. Filters Fast only ships free on orders of $99 or more, and Discount Filter’s free shipping starts at $70. On a single genuine cartridge with shipping included, the maths is not close.
Orders are processed within 1–2 business days and delivered in 3–5 business days via USPS, and unopened filters can be returned within 30 days of delivery for free with a prepaid label. Order yours here: genuine EDR4RXD1 (Filter 4).
Frequently Asked Questions
Is EDR4RXD1 the same as UKF8001? Yes. UKF8001 is the older Whirlpool part number; EDR4RXD1 is the current EveryDrop number for the same cartridge, and either label on your old filter means Filter 4 is your replacement.
Where is Filter 4 located in my fridge? On most models, inside the fresh food compartment in the upper-right corner, behind a flip-down cover. A few models use a side-wall or grille housing — your manual’s filter section will show yours.
How do I reset the filter light? It varies by model; on many, you hold the Water Filter or Filter Reset button for about 3 seconds. Our replacement walkthrough lists the common combinations.
Why is my dispenser slow right after a filter change? Usually trapped air or a cartridge that is not fully seated. Flush for longer first; if flow is still weak, remove the filter and push it back in until it clicks.
Can I use a cheaper compatible cartridge instead? You can, but fit and seal quality vary, and the filtration may not match the genuine cartridge’s certified performance. If you go genuine, buy it at a fair price rather than the $59.99 list price.
What if I order the wrong filter? Unopened, unused filters can be returned within 30 days of delivery, free, with a prepaid label from us — and if you contact us with your fridge model number first, we will confirm the fit before you order.