Whirlpool KAD4RXD1 Refrigerator Water Filter
The short answer on the KAD4RXD1
The KAD4RXD1 cartridge fits whirlpool refrigerators using the push-in bay. Filter 4 bay (KitchenAid label). Replacement interval: ~200 gal / 6 months. This page lists every verified model, the honest certification picture, and what the cartridge should cost.
Verified fit: on-site model fit pages in progress for this part - meanwhile the Filter Finder lists every fridge it fits. Install time: 5 minutes, no tools. This page is part-number specific — for the model-page view (where the filter lives on your exact fridge), follow any link in the compatible-models table below. Push-in cartridges at the top-left of the fresh-food compartment on most models.
KAD4RXD1 vs EDR1RXD1 vs EDR3RXD1 vs EDR4RXD1 vs EDR5RXD1 — which cartridge does your fridge take?
Fit pages for this part number are in progress - use the Filter Finder to check your model now.
Certification lines above are traced to our verified evidence file (part-number × version facts); third-party compatibles usually carry less.
What an KAD4RXD1 should cost
We do not print an OEM list price for the KAD4RXD1 — our price file has no captured listing for it, and a guessed anchor is worse than none. Check the manufacturer's own parts store for the genuine price; third-party compatibles cluster at $8–15 per cartridge (mostly NSF/ANSI 42 only) with a premium 42+53 tier above them.
Refrigerators that take the KAD4RXD1
Fit pages for this part number are in progress - use the Filter Finder to check your model now.
Model number on your fridge is on the plate inside the fresh-food compartment. Full list via the brand hub: Whirlpool filter hub.
Swap it in 5 minutes
- Pull the old cartridge straight out of the header — expect a small spill, not a flood.
- Align the new cartridge with the keyed slot; it only goes in one orientation.
- Push the cartridge home until the retention latch clicks.
- Run 1–2 gallons through the dispenser to flush carbon fines, then hold the filter-reset control until the status light clears.
What the KAD4RXD1 is actually certified to remove
Same cartridge as EDR4RXD1. The honest framing: the two tiers that matter in compatibles are 42-only (taste, chlorine, sediment) and 42+53 (adds tested lead and cyst reduction). Claims are part-number × version facts — NSF listings update with annual re-tests, so re-check the certified-product database before relying on a claim. PFOA/PFOS reduction claims live under NSF/ANSI 53 (P473 protocol), not under 401 — a listing that says otherwise is wrong.
What does the KAD4RXD1 replace?
Replacement path: Filter 4 bay (KitchenAid label). Within a family, buying the newer part number is always the safe choice — older cartridges often physically fit newer bays but cause no-water or error conditions.
Does the KAD4RXD1 water filter have an RFID chip?
None. Only GE's RPWFE line carries an authentication chip; no other mainstream refrigerator cartridge on this site verifies electronically.
How hard is it to install a KAD4RXD1?
A 5 minutes, no-tools job: twist or push the old cartridge out, seat the new one, flush 1–2 gallons to clear carbon fines, then hold the filter reset until the light clears.
Which certification should I look for in a compatible KAD4RXD1?
Same cartridge as EDR4RXD1. Third-party compatibles split into two tiers: NSF/ANSI 42 only (taste, chlorine, sediment) and 42 + 53 (adds tested lead and cyst reduction). If a listing does not name the standard, assume 42 only.
Related part numbers & guides
- EDR1RXD1 — Supersedes W10295370/A
- EDR3RXD1 — Push-in bay
- EDR4RXD1 — French-door bay
- EDR5RXD1 — Verified dual-source (EveryDrop + Home Depot)
- Whirlpool filter hub — every system the brand uses
- How to change a Whirlpool refrigerator water filter
- Whirlpool filter stuck? The 5-minute fix
- NSF 42 vs NSF 53 — what each certification actually tests
Not sure this is your cartridge?
The model number on the plate inside your fridge (fresh-food compartment, left wall or ceiling) is the ground truth. Match it in the finder and buy with confidence.
Not sure it is your cartridge? Use the fridge filter finder · All refrigerator water filters
OEM vs certified aftermarket filters → (what the difference really is, and when the cheaper one is fine)