KAD1RXD1 Water Filter: KitchenAid’s Name for EveryDrop Filter 1

If the cartridge you just pulled out of your KitchenAid says KAD1RXD1, you are holding a filter with two identities. KAD1RXD1 is KitchenAid’s own branded name for the cartridge the rest of the world orders as EveryDrop Filter 1, part EDR1RXD1 — the same genuine Whirlpool-made filter, the same purple-capped twist-in cartridge, sold under the KitchenAid badge for KitchenAid refrigerators. This guide explains the names, confirms whether your fridge uses the Filter 1 housing, walks through the change, and shows what the genuine cartridge should cost.

One Filter, Several Names

Whirlpool owns both brands in this story: KitchenAid is a Whirlpool brand, and EveryDrop is Whirlpool’s filter line. So the Filter 1 cartridge travels under a small crowd of part numbers depending on which badge was on the fridge door and which year the manual was printed. The EDR1RXD1 product page lists the numbers its cartridge replaces, and the pattern is:

One rule settles every argument in this table: the label on the cartridge you removed is the final authority. If it says KAD1RXD1, Filter 1 or any number in the left-hand column, the EDR1RXD1 is your replacement. If it says a different EveryDrop number, order that number instead — the cartridges are different shapes and do not interchange. Our KitchenAid refrigerator water filter guide maps the whole brand, housing by housing.

Which KitchenAid Models Use Filter 1?

Filter 1 is an internal twist-in cartridge — the product page lists the installation type exactly that way, no tools required — and on KitchenAid models it serves mainly the side-by-side families. The EDR1RXD1 page’s compatible-model list includes KitchenAid models such as the KSC23C8EY and KSC24C8EY series, the KSF26C4XY series, and the KRSC503ESS and KRSC703HPS counter-depth side-by-sides, alongside Whirlpool’s own WRS side-by-side lines and Maytag and JennAir models on the same platform.

The housing itself is the giveaway. On Filter 1 models the cartridge sits inside the fresh food compartment behind a filter cover — the page’s own install FAQ puts the cover “usually at the bottom or top right” depending on the model. If your KitchenAid instead has a push-button cartridge in the upper-right interior, that is Filter 2 territory (KitchenAid’s KAD2RXD1), and if yours lives in the base grille with a reusable cap, you are looking at Filter 3. Housing first, label second, order third.

What the Genuine Cartridge Is Certified to Do

The EDR1RXD1 page describes Filter 1 as the only filter authorized by Whirlpool for use in their refrigerators, and its specification table carries the certifications that make “genuine” mean something checkable:

• NSF/ANSI Standards 42, 53 and 401, plus CSA B483.1
• Certified to reduce up to 70 contaminants per the page’s specification field, including lead, pesticides and pharmaceuticals
• Certified to reduce 99% of microplastics
• Activated carbon block media, flow rate 0.5 GPM
• Rated life of 6 months / 200 gallons

That certification list is the practical difference between the genuine cartridge and a look-alike. A copy can match the purple cap and the twist-in shape; it cannot show you an NSF listing for the cartridge in the box. Our dedicated Filter 1 guide goes through the full part-number list and fit checks in more depth.

How to Replace a KAD1RXD1 / EDR1RXD1

The product page’s own replacement steps are short, because the job is:

1. Locate the filter cover inside the fridge (bottom or top right, per your model).
2. Open the cover and pull the old cartridge straight out.
3. Push the new EDR1RXD1 in until it clicks — that click is the seat sealing.
4. Flush about 4 gallons of water through the dispenser and discard them, plus the first batch of ice. This clears air and loose carbon from the new cartridge.
5. Note the date — the next change is due in about 6 months.

Our step-by-step how to replace the EDR1RXD1 covers the reset procedure for the filter indicator as well: a new cartridge never resets the light by itself, so finish the job on the control panel using your model’s reset method. One more note from the product page: if your home already runs whole-house filtration, an EDR1RXD1 bypass plug exists for these models — but for everyone else, the cartridge is the filtration, and skipping it means drinking unfiltered water through a housing designed for a filter.

Signs Your Filter 1 Is Due — and What Happens If You Wait

The 6-month rating assumes average use; your fridge reports the cartridge’s real condition earlier than the calendar does. On Filter 1 models the sequence is familiar: the dispenser stream thins first, then ice production slows and cubes shrink or turn hollow, and finally the chlorine taste and smell the cartridge was removing creep back into both water and ice. Any one of those means change now, whatever the date says. Waiting costs little in drama and plenty in substance — a saturated carbon block keeps passing water while quietly stopping the filtration it was certified for, so the household drinks unfiltered water that still comes out of a “filtered” dispenser. The indicator light, when it finally turns, is a timer expiring, not a sensor reporting; treat it as the last reminder, not the first.

What a Genuine KAD1RXD1 Should Cost

Because KAD1RXD1 and EDR1RXD1 are the same cartridge, the price is the Filter 1 price: $39.99 one-time at Discounted Filter Store, with free US shipping on any order amount — the product page shows $39.99–$147.99 across 1 to 4 packs, so multi-packs bring the per-filter price down. Set that against the official EveryDrop store at $59.99 one-time, or $48 only if you commit to a subscription; Filters Fast’s free shipping starts at $99+ and Discount Filter’s at $70+. Same genuine Whirlpool-made cartridge, no subscription, no minimum basket.

Orders are processed within 1–2 business days and delivered in 3–5 business days via USPS. Ordered the wrong number? Unopened filters can be returned within 30 days, free, with a prepaid label — and if you send us the number on your old cartridge first, we will confirm the match before you order. Ready when you are: order the genuine EDR1RXD1 (Filter 1).

Frequently Asked Questions

Is KAD1RXD1 the same filter as EDR1RXD1? Yes. KAD1RXD1 is KitchenAid’s branded name for the cartridge sold as EveryDrop Filter 1, part EDR1RXD1. Same Whirlpool-made cartridge, same twist-in housing, same certification — order the EDR1RXD1 and you are ordering the filter your KAD1RXD1 manual describes.

Which KitchenAid models take the KAD1RXD1 / Filter 1? Mainly KitchenAid side-by-side models with the internal twist-in housing — the product page’s model list includes the KSC23C8EY, KSC24C8EY, KSF26C4XY, KRSC503ESS and KRSC703HPS families. The label on your old cartridge confirms it in seconds.

What other part numbers does the EDR1RXD1 replace? Per the product page: W10295370, W10295370A, W10790813, W10276924, W10291030, Kenmore 46-9081 and 46-9930, and the KitchenAid-family numbers P5WB2L and P4RFWB. EDR1RXD1B is the same filter in bulk/updated packaging.

How long does a Filter 1 cartridge last? The product page rates it at 6 months or 200 gallons, whichever your household reaches first. Heavy dispenser and ice use shortens real-world life — change sooner if the flow slows or taste returns.

Is the EDR1RXD1 certified? Yes. Its specification lists NSF/ANSI Standards 42, 53 and 401 plus CSA B483.1, certified reduction of up to 70 contaminants, and certified reduction of 99% of microplastics.

How much is the genuine filter here, and how fast is delivery? $39.99 one-time for a single cartridge (packs run to $147.99), with free US shipping on any order size. Orders process in 1–2 business days and arrive in 3–5 business days via USPS, and unopened filters return free within 30 days on a prepaid label.