If you own a Maytag refrigerator with a water dispenser, there is a better-than-even chance the filter conversation starts with one part number: UKF8001. For years it was Maytag’s own flagship refrigerator water filter, printed in Maytag manuals, sold in Maytag boxes, and searched for by Maytag owners more than any other filter number in the brand’s history.
Here is what confuses people today: Maytag is part of the Whirlpool family of brands, and its refrigerators now take EveryDrop cartridges — Whirlpool’s genuine OEM filter line. The UKF8001 did not disappear. It was renamed. The filter you want is sold today as EveryDrop Filter 4 (EDR4RXD1), and this guide explains the whole picture: the UKF8001 story, which EveryDrop filter each Maytag housing takes, how to change it, and what the genuine cartridge should cost.
The UKF8001 Story: Maytag’s Own Filter Number
UKF8001 was originally a Maytag part — the standard cartridge for a generation of Maytag French door and bottom-freezer refrigerators. When Whirlpool consolidated its brands’ filtration under the EveryDrop name, the cartridge itself carried on with the same fit and the same job, but gained a new part number: EDR4RXD1, EveryDrop Filter 4.
That history matters for two practical reasons:
- Your manual may only say UKF8001. If your Maytag manual, the sticker inside the fridge, or the label on your old cartridge says UKF8001, the current genuine replacement is the EDR4RXD1. They are the same filter slot, the same housing, the same cartridge.
- The UKF8001 name attracts copies. Because the number is so well known, the market is full of cheap cartridges wearing it. The genuine article is the EveryDrop Filter 4 made by Whirlpool — accept no substitute that cannot show you its certification.
One rule overrides everything else in this guide, though: the label on the cartridge you pull out is the final authority. If your old Maytag filter says Filter 4, EDR4RXD1 or UKF8001, you need Filter 4. If it says something else, match what it says — the table below covers the other possibilities.
Which EveryDrop Filter Does Your Maytag Take?
Maytag refrigerators use a handful of EveryDrop housings. Find your situation:
| Your Maytag’s housing / old cartridge | Filter you need | Part number |
|---|---|---|
| Old cartridge labelled UKF8001, base grille or interior housing | Filter 4 | EDR4RXD1 |
| Push-button cartridge in the upper-right interior | Filter 2 | EDR2RXD1 |
| Twist-in cartridge inside the fridge (older label W10295370A) | Filter 1 | EDR1RXD1 |
| Base grille cartridge with a reusable cap, push-button release | Filter 3 | EDR3RXD1 |
| Interior twist-in cartridge, older label PWF-NL240V | Filter 5 | EDR5RXD1 |
| Cartridge labelled Filter A | Filter A | EDRARXD1 |
The EDR4RXD1 product page confirms Filter 4 is used in selected models from Whirlpool, Maytag, Amana, KitchenAid and JennAir, and that it helps reduce chlorine taste and odor. For the complete walkthrough of this cartridge — fit checks, part numbers and troubleshooting — see our dedicated guide to EveryDrop Filter 4. And for the whole range in one place, the EveryDrop refrigerator water filter guide maps every cartridge.
Base Grille or Interior? Finding Your Maytag’s Housing
Maytag’s two common layouts trip people up, so here is how to tell which one you have before you order:
- Base grille housing. Open the fridge doors and look at the grille running along the very bottom front of the refrigerator. On many Maytag French door and bottom-freezer models the filter lives behind that grille — a round cartridge you reach from the front, at floor level. UKF8001/Filter 4 models are commonly found here, and Filter 3 (with its reusable cap) also uses a base grille housing.
- Interior housing. On other models the cartridge is inside the fresh food compartment — typically the upper-right corner. Filter 2 sits here behind a push-button release; Filters 1 and 5 twist into interior housings; Filter A twist-and-locks inside as well.
Take thirty seconds to locate yours now, and pull the old cartridge before ordering. Shape, label and part number together remove all doubt — and removing the old filter first is something you have to do on change day anyway.
How to Change a Maytag Refrigerator Water Filter
The exact steps vary slightly by housing, but the rhythm is the same everywhere:
- Remove the old cartridge. Base grille filters typically turn or push to release from the front grille; interior filters push a release button or twist out of their housing. (The Filter 4 page puts it simply: remove the old filter, place the new one in the correct position, and make sure it is fitted properly.)
- Fit the new cartridge until it seats fully — a partial seat is the number-one cause of slow flow and drips.
- Flush. Run the dispenser for a few minutes and discard the water, plus the first batch of ice. This clears trapped air and loose carbon from the new cartridge.
- Reset the filter indicator on the control panel, following your model’s reset method, and note the date. The next change is due in about 6 months — Filter 2’s rating, for example, is about 6 months or 200 gallons per its product page, and the rest of the range runs on the same roughly six-month cycle.
That is the whole job. Every EveryDrop cartridge in the range is a tool-free change measured in minutes.
What a Genuine Maytag Filter Should Cost
The genuine EDR4RXD1 (Filter 4 / UKF8001) is $39.99 one-time at Discounted Filter Store, with free US shipping on any order size — its product page shows $39.99–$147.99 across 1 to 4 packs, so multi-packs lower the per-filter price. The same $39.99 holds for every genuine EveryDrop cartridge in the range. The honest comparison:
| Where you buy | 1-pack price | Shipping |
|---|---|---|
| Discounted Filter Store | $39.99 one-time | Free in the US, any order size |
| Official EveryDrop store | $59.99 one-time ($48 by subscription) | Varies |
| Filters Fast | Varies | Free only on orders $99+ |
| Discount Filter | Varies | Free only on orders $70+ |
Orders here are processed within 1–2 business days and delivered in 3–5 business days via USPS. Ordered the wrong filter? Unopened cartridges return within 30 days, free, with a prepaid label.
A final word on the copies: a no-name “UKF8001” at half the price is usually half the filter — unverified carbon, no certification you can check, and a seal that was not made for your housing. The genuine Filter 4 is a certified OEM part. At $39.99 with free shipping, the saving a copy offers is small and the risk is yours.
Frequently Asked Questions
Is UKF8001 the same filter as EDR4RXD1? Yes. UKF8001 was Maytag’s original part number; the same cartridge is sold today as EveryDrop Filter 4, part number EDR4RXD1. If your manual or old cartridge says UKF8001, Filter 4 is the current genuine replacement.
Where is the water filter on a Maytag refrigerator? It depends on the model. Many Maytag French door and bottom-freezer models keep it in the base grille at the bottom front; others use an interior housing, usually in the upper-right corner of the fresh food compartment. Your old cartridge’s location is the fastest answer.
How often should I change my Maytag filter? About every 6 months — the EveryDrop range is rated on a roughly six-month cycle (Filter 2, for example, is rated about 6 months or 200 gallons). Change sooner if flow slows or taste and odor return.
Does Filter 4 reduce chlorine? Yes. The EDR4RXD1 product page states Filter 4 helps reduce unwanted impurities that affect freshness, including chlorine taste and odor, and the cartridge carries NSF certification.
My Maytag’s old filter doesn’t say UKF8001. What do I order? Match the label on your old cartridge — that is always the final authority. Maytags also take Filters 1, 2, 3, 5 and A depending on the housing; use the table above or send us your model number and we will confirm the fit.
Is a generic UKF8001 just as good? The UKF8001 name is widely copied. A generic may fit the housing, but its filtration and certification are unverified, and a poor seal can let water bypass the media entirely. The genuine EveryDrop Filter 4 is the certified OEM part Whirlpool specifies.