KitchenAid Refrigerator Water Filter: Which One Fits (2026)

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A KitchenAid refrigerator water filter comes in two genuine flavors. KitchenAid sells its own branded cartridges, numbered Filter 1 through 4 under part numbers KAD1RXD1 to KAD4RXD1, and Whirlpool’s everydrop line sells numbered cartridges that its listings describe as the official filter for KitchenAid too. Both use the same number system, so the first job is the same either way: find the number your fridge takes. This guide shows how the KitchenAid and everydrop numbers line up, which KitchenAid fridge models the listings actually name, what the certification claims mean, and when a third-party compatible is a fair trade.

Part of our Plumbing & Water guide — start there for the full picture →

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How we compared: we compared 10 current Amazon listings, four KitchenAid-branded cartridges, four everydrop cartridges and two third-party compatibles, on what each listing actually states: filter number, install style, NSF standards named, contaminant claims, fridge models named and service life. We did not lab-test any of these filters or install them hands-on. Prices and availability change often, so check the current listing before buying.

Quick picks: KitchenAid refrigerator water filters by number

Product	Best for	Key features	Price	Buy
KitchenAid KAD2RXD1 Filter 2	KitchenAid-branded Filter 2	Genuine KitchenAid part Claims 28 contaminants incl. lead Replace every 6 months	$60.00as of Oct 20, 2026 8:32 am GMT+0000	Buy now →Check current price
everydrop Filter 2 EDR2RXD1	Filter 2 with most NSF detail	Names NSF 42, 53 and 401 Claims 70 contaminants Twist-in install	$49.99as of Oct 20, 2026 4:19 am GMT+0000	Buy now →Check current price
KitchenAid KAD3RXD1 Filter 3	KitchenAid Filter 3 housings	Claims 73 contaminants incl. lead Genuine KitchenAid part Replace every 6 months	$61.00as of Oct 20, 2026 8:32 am GMT+0000	Buy now →Check current price
KitchenAid KAD4RXD1 Filter 4	KitchenAid Filter 4 housings	Claims 31 contaminants incl. lead Green Filter 4 cartridge Replace every 6 months	$59.99as of Oct 20, 2026 8:32 am GMT+0000	Buy now →Check current price
Kuiwsi KU02 (KAD2RXD1)	Filter 2 compatible, 3-pack	Names KitchenAid fridge models NSF 42 named 200 gallons or about 6 months	$39.99as of Oct 20, 2026 8:32 am GMT+0000	Buy now →Check current price
Waterdrop WD-F07 (Filter 4)	Filter 4 compatible, 3-pack	Names KitchenAid Filter 4 NSF 42 and 372 named 300 gallons or 6 months	$27.99as of Oct 19, 2026 11:13 pm GMT+0000	Buy now →Check current price

Prices are Amazon’s listed prices as of the time shown and change often; check Amazon for today’s price. As an Amazon Associate we earn from qualifying purchases.

Which filter fits your fridge

The table uses only what the 10 listings state. KitchenAid’s own listings give the number and color; the everydrop listings add install style; the two compatibles supply the cross-referenced part numbers and the only KitchenAid fridge model numbers on the shelf. Listed heights may include packaging.

The KitchenAid-branded cartridges use the same numbers as everydrop, and for Filters 1 and 4 the same color bands. Neither set of listings says in so many words that a KAD cartridge and the same-numbered everydrop cartridge are interchangeable. The everydrop listings do say they are the official filter for KitchenAid, and the KitchenAid listings tell buyers to check the previous filter number to confirm compatibility. In practice, match the number first, then choose the brand.

To confirm the number, read the label on your current cartridge, then find the fridge’s model and serial label, usually on an interior side wall of the fresh-food section near the top or behind the crisper drawers. The owner’s manual or KitchenAid’s parts lookup lists the correct filter for that model. None of the listings says where the filter sits in a given KitchenAid, so do not choose by location alone. For the full everydrop numbering, including Filters 3, 5 and A, see our everydrop water filter guide.

Genuine vs compatible

The 10 listings make three different kinds of certification claim, and they are worth separating.

• everydrop (4 listings): all name NSF/ANSI 42, 53 and 401. Standard 42 covers chlorine taste, odor and particulates; 53 covers health contaminants such as lead and cysts; 401 covers emerging contaminants such as certain pharmaceuticals.
• KitchenAid-branded (4 listings): each says it is NSF certified to reduce a stated number of contaminants, including lead, pesticides and pharmaceuticals, but none names which NSF standard. Lead reduction falls under 53, so the claim implies more than 42, but the listing does not say.
• Compatibles (2 listings): both name NSF 42; Waterdrop adds NSF 372, which covers lead-free materials in the filter itself and is not a lead-reduction claim.

“Certified by” an accredited body means a listing you can check; “tested to” or “meets” may describe the seller’s own testing. The CDC notes you can look up a filter in the NSF database to see what it is certified to remove, which is the way to settle the unnamed standards on the KitchenAid-branded boxes. The EPA’s consumer tool for lead-reducing filters says to look for certification against both NSF/ANSI 53 and 42.

The everydrop listings warn that non-genuine filters may damage the refrigerator. None of the listings describes a chip or sensor that rejects third-party cartridges.

The 6 picks, compared listing by listing

1. KitchenAid KAD2RXD1 Filter 2 — Best KitchenAid-Branded Filter 2

Best KitchenAid-branded Filter 2

Why we like it

• Genuine KitchenAid part for the Filter 2 slot
• Claim names lead, pesticides and pharmaceuticals
• Filter 2 has the most named KitchenAid models
• Tells buyers to match the old filter number

KitchenAid KAD2RXD1 — Filter 2, 28 contaminants incl. lead, 6-month interval, NSF standard numbers not listed

The Genuine Filter for the Slot With the Most Named KitchenAid Models

Only one listing on the shelf names actual KitchenAid fridge model numbers, and it is a Filter 2 compatible. It lists 11 refrigerator models across the KRFF, KRMF, KRQC and KRFC series. That makes Filter 2 the best-documented number for KitchenAid on this shelf, and this cartridge is the KitchenAid-branded version of it.

Like all four KitchenAid-branded listings, it names lead in its contaminant claim, which none of the everydrop listings do by name; they speak of heavy metals instead. Its 28-contaminant claim is lower than the 70 claimed by the everydrop Filter 2, and it does not name a standard number, so the next pick is the one to choose if certification detail is the priority.

Two listing quirks: the product data gives the color as white and the size field reads like a stock code. Neither affects fit; the printed Filter 2 number does.

Check KitchenAid KAD2RXD1 Filter 2 price on Amazon

2. everydrop Filter 2 EDR2RXD1 — Best Filter 2 for Certification Detail

Best Filter 2 for NSF detail

Why we like it

• Names NSF 42, 53 and 401
• Claims 70 contaminants, more than KAD2RXD1
• Describes twist-in installation
• States a 200-gallon limit as well as 6 months

everydrop EDR2RXD1 — Filter 2, twist-in, NSF 42/53/401, 70 contaminants, 6 months or 200 gal

Two and a Half Times the Contaminant Claim of the KitchenAid-Branded Filter 2

Both genuine Filter 2 cartridges are on this shelf, and their claims differ sharply: 70 contaminants with three named standards here, against 28 with no standard named on the KitchenAid box. The same gap shows on Filter 1, where everydrop claims 70 and KitchenAid 28. On Filter 4 the two are close, 32 for everydrop and 31 for KitchenAid. The listings do not explain the difference, and it may reflect how each brand words its certification rather than different cartridges.

The everydrop listing also gives the install style, twist-in, and a 200-gallon limit, neither of which the KitchenAid listing states. Its listed height, 7.5 inches, is shorter than the 8.69 inches on the KitchenAid listing; one or both figures probably describe packaging.

It does not name fridge model numbers, so use the compatible listing’s model list or your manual to confirm Filter 2.

Check everydrop Filter 2 EDR2RXD1 price on Amazon

3. KitchenAid KAD3RXD1 Filter 3 — Best for KitchenAid Filter 3 Housings

Best for KitchenAid Filter 3

Why we like it

• Highest claim of the KitchenAid-branded four, 73
• Names lead, pesticides and pharmaceuticals
• Only Filter 3 cartridge on this shelf
• Aqua color band matches the everydrop code

KitchenAid KAD3RXD1 — Filter 3, aqua, 73 contaminants incl. lead, 6-month interval, standards not listed

The Only Filter 3 Cartridge on This Shelf

No everydrop Filter 3 and no Filter 3 compatible turned up in this search, so this is the one option shown for KitchenAid fridges that take Filter 3. Its claim of 73 contaminants is the highest of the four KitchenAid-branded listings, which claim 28, 28, 31 and 73.

The listing is the tallest cartridge on the shelf at a listed 13.5 inches, which is a quick sanity check against the cartridge you pull out. One slip: a bullet tells buyers to replace their “Whirlpool” water filter every six months, a copy error from the sister listing. It does not change the part.

The listing does not name an NSF standard, an install style or a gallon rating.

Check KitchenAid KAD3RXD1 Filter 3 price on Amazon

4. KitchenAid KAD4RXD1 Filter 4 — Best for KitchenAid Filter 4 Housings

Best for KitchenAid Filter 4

Why we like it

• Genuine KitchenAid part for Filter 4 fridges
• Claim nearly matches everydrop Filter 4
• Names lead among its contaminants
• Green color band matches everydrop Filter 4

KitchenAid KAD4RXD1 — Filter 4, green, 31 contaminants incl. lead, 6-month interval, standards not listed

The KitchenAid-Branded Filter Whose Claim Tracks Its everydrop Twin

On Filter 1 and Filter 2, the KitchenAid-branded claims trail the everydrop claims by a wide margin. On Filter 4 they almost match: 31 contaminants for this KitchenAid cartridge, 32 for the everydrop EDR4RXD1. If you prefer the KitchenAid name on the box, this is the number where you give up the least on paper.

Filter 4 is also the most cross-referenced number in the family. The Waterdrop compatible on this shelf ties it to UKF8001, 4396395, EDR4RXD1B and EDR4RXD2 and names KitchenAid Filter 4 fridges by brand. If your old cartridge says UKF8001, this is the slot.

The listing does not name a standard, install style or gallon rating.

Check KitchenAid KAD4RXD1 Filter 4 price on Amazon

5. Kuiwsi KU02 KAD2RXD1 Compatible — Best Filter 2 Compatible Three-Pack

Best Filter 2 compatible

Why we like it

• Only listing naming KitchenAid fridge model numbers
• Three cartridges per pack
• Names NSF 42
• States a 200-gallon capacity

Kuiwsi KU02 — KAD2RXD1 compatible, NSF 42, 200 gal or about 6 months, 11 KitchenAid models named, 3-pack

The Only Listing on the Shelf That Names KitchenAid Fridge Models

Nine of the 10 listings identify fit only by filter number or brand. This one lists 11 KitchenAid refrigerator models by number, across four series. The seller calls the model list “for reference only,” so treat it as a cross-check against your fridge’s label rather than proof, but it is the most concrete fit information here for Filter 2.

Its certification claim is NSF 42 for chlorine and odor, which is the taste-and-odor standard. It does not claim 53 or 401, and it does not name lead. Against the everydrop Filter 2, that is a clear step down on paper; against the KitchenAid-branded KAD2, the comparison is harder because the KitchenAid box names no standard at all.

The listing gives no warranty or return terms.

Check Kuiwsi KU02 (KAD2RXD1) price on Amazon

6. Waterdrop WD-F07 Filter 4 Compatible — Best Filter 4 Compatible for KitchenAid

Best Filter 4 compatible

Why we like it

• Names KitchenAid Filter 4 fridges by brand
• Long list of replaced part numbers
• Names NSF 42 and NSF 372
• Month install stickers included

Waterdrop WD-F07 — Filter 4 compatible, NSF 42 + 372, 300 gal or 6 months, stickers, lifetime warranty, 3-pack

The Only Listing Here That Ties KitchenAid Filter 4 to the UKF8001 Family

This is the only listing of the 10 that names a KitchenAid Filter 4 and also lists the older part numbers that Filter 4 replaces, from UKF8001 to 4396395. For a KitchenAid owner whose old cartridge shows one of those numbers rather than “Filter 4,” it closes the loop.

It names NSF 42 and 372. The second is a materials standard for lead-free construction, so this filter makes no certified lead-reduction claim, unlike the KitchenAid-branded Filter 4, which names lead (without a standard number). The listing’s heavy-metal language is “tested by the third-party laboratory,” which is testing rather than certification.

It is the only listing on the shelf with a stated lifetime warranty, and its 300-gallon rating is the highest stated here.

Check Waterdrop WD-F07 (Filter 4) price on Amazon

Push-in, twist-in and the color code

The everydrop listings describe Filter 1 as push-in and Filters 2, 4 and A as twist-in. The KitchenAid-branded listings do not describe install style, but because they share numbers, the same pattern is the sensible assumption; confirm with the manual. The color bands help when the printed number has faded: purple for Filter 1 and green for Filter 4 on both brands’ listings, and aqua for KitchenAid’s Filter 3. The KitchenAid Filter 2 listing gives white as its color, while everydrop’s Filter 2 is orange, so lean on the number for that one.

A cartridge that will not seat with normal hand pressure is the wrong one. Forcing it can crack the housing and start a slow leak.

Replacement interval and the indicator light

Every listing on this shelf states a six-month interval. The everydrop listings and the Kuiwsi compatible add 200 gallons; Waterdrop says 300 gallons; the KitchenAid-branded listings give no gallon figure. Change at whichever limit comes first. The filter light on a KitchenAid dispenser is a timer, not a sensor; none of these listings describes anything that measures water quality. Reset it after each swap per the owner’s manual.

The CDC advises changing filters on the manufacturer’s schedule so they keep working and do not grow germs, wearing gloves during the change and washing your hands after. It also advises people with weakened immune systems not to change filters themselves.

What a KitchenAid fridge filter can and cannot fix

These are carbon cartridges. The CDC notes that most fridge filters are not designed to remove germs; they typically use carbon to improve taste or reduce heavy metals such as lead. If your concern is lead specifically, the EPA notes that lead pipes are more likely in homes built before 1986 and that brass faucets and lead solder are common sources even without a lead service line. A cartridge that names lead is a start, but our guide to filters for lead in water compares options that state their lead certification plainly.

Front Range municipal water is disinfected with chlorine or chloramine, and the EPA notes that chloramine provides longer-lasting disinfection as water moves through pipes. Your utility’s annual water quality report says which applies; carbon is generally good at chlorine taste. If you want filtered water at the kitchen tap as well as the dispenser, an under-sink water filter covers both cooking and drinking water.

Installing the filter and when to call a pro

All the listings describe tool-free installation. Waterdrop recommends running about 2.5 gallons through the dispenser on first use to clear air and prevent sputtering; expect a little cloudy water at first. Keep a towel under the housing, then check it and the floor in front of the fridge over the next day. A slow drip from a poorly seated cartridge can soak a subfloor before anyone notices, and water stains in front of a refrigerator are a regular home-inspection finding.

If the housing keeps leaking with the correct, fully seated cartridge, the housing or supply connection needs a technician. For water-quality questions beyond the fridge, our plumbing and water guides cover testing and treatment. Buying a Front Range home and want the plumbing and leak evidence checked? Reach out through our contact page to connect with a vetted local inspector.

Whirlpool owners can find a model-by-model approach in our Whirlpool refrigerator water filter guide, and Maytag owners, whose fridges often take Filter 4 or Filter 7, in our Maytag refrigerator water filter guide. For picks across all brands, see the best refrigerator water filters, and for basics, our refrigerator water filter guide.

References

• About Choosing Home Water Filters — Centers for Disease Control and Prevention
• Consumer Tool for Identifying Point-of-Use and Pitcher Filters Certified to Reduce Lead — U.S. Environmental Protection Agency
• Basic Information about Lead in Drinking Water — U.S. Environmental Protection Agency
• Chloramines in Drinking Water — U.S. Environmental Protection Agency