EveryDrop keeps its range simple to describe and surprisingly easy to get wrong. There are six cartridges — Filters 1, 2, 3, 4, 5 and Filter A — and each one fits a different housing in a different set of refrigerators. Pick the wrong number and the cartridge will not lock in, will not seal, or will not filter at all.
This guide is the whole range in one place: what the numbers mean, where each cartridge lives inside (or under) the fridge, how to find your number in two minutes, and what a genuine cartridge should actually cost.
The EveryDrop Numbering System, Explained
EveryDrop is Whirlpool’s filter brand, and the numbered cartridges cover the Whirlpool family of refrigerator brands: Whirlpool, Maytag, KitchenAid, Amana and JennAir.
The number is not a quality grade or a filtration rating — Filter 5 is not “better” than Filter 1. The number identifies a cartridge shape and housing design. Each number matches one specific housing, installed in one specific family of fridge models, and the cartridges were designed at different times for different refrigerator generations.
That is why the only reliable question is never “which brand is my fridge?” but “which number is on the cartridge I already have?”
EveryDrop Filters Compared
| Filter | Part number | Where it sits | Typical fridge types |
|---|---|---|---|
| Filter 1 | EDR1RXD1 | Inside the fridge, upper-right corner — twist-in | Whirlpool-family side-by-side and French door |
| Filter 2 | EDR2RXD1 | Inside the fridge, upper-right — push-button release | French door and bottom-freezer |
| Filter 3 | EDR3RXD1 | Base grille at the bottom front — quarter-turn cap | Side-by-side and French door with a grille housing |
| Filter 4 | EDR4RXD1 (also sold as UKF8001) | Base grille or inside the fridge, depending on the model | French door and bottom-freezer |
| Filter 5 | EDR5RXD1 | Inside the fridge — twist-in | Select Whirlpool-family models |
| Filter A | EDRARXD1 | Inside the fridge — twist-and-lock housing | Select Whirlpool, Maytag, KitchenAid, Amana and JennAir models |
A few details worth knowing from the product pages themselves:
- Filter 1 (EDR1RXD1) is an internal twist-in cartridge — no tools required. Its product page lists certification to NSF/ANSI Standards 42, 53 and 401, a 200-gallon rating and a certified 99% reduction of microplastics.
- Filter 2 (EDR2RXD1) releases with a push button rather than a twist, which is the quickest way to tell it apart from Filter 1 before you order.
- Filter 3 (EDR3RXD1) and Filter 4 (EDR4RXD1) are the pair owners confuse most — our head-to-head on EDR3RXD1 vs EDR4RXD1 walks through the differences.
- Filter 5 (EDR5RXD1) is another interior twist-in design, for a different housing than Filter 1’s.
- Filter A (EDRARXD1) is the odd one out — a letter instead of a number. Its product page lists NSF/ANSI 42, 53 and 401 certification, a life of about 6 months or 200–250 gallons, and twist-and-lock installation with no tools.
How to Find Your Filter Number
Three checks, in order of reliability:
- Read the old cartridge. Pull your current filter out and read the label. It will say Filter 1, 2, 3, 4, 5 or A, and the full part number (EDR1RXD1, EDR2RXD1, and so on). This is the answer — everything else is a cross-check.
- Check your fridge’s model number. The model sticker is usually inside the fresh food compartment, on the wall or ceiling. Match the model against the compatible-model list on the product page for the number you found in step 1.
- Use the housing as a clue. A cartridge behind a quarter-turn cap in the base grille points to Filter 3 (or Filter 4 on some models). A cartridge in the upper-right interior points to Filter 1, 2 or 5. The housing narrows it down; the label settles it.
If the label is unreadable and the model check leaves doubt, send us the fridge model number before ordering — we will confirm the fit rather than ship you a guess.
Why the Numbers Are Not Interchangeable
Each EveryDrop number is a different physical cartridge: different shape, different neck, different locking mechanism. The Filter A product page says it plainly — Filter A is not interchangeable with Filter 1 or Filter 5, because the cartridges are different shapes and will not lock into each other’s housings. The same is true across the whole range.
Forcing a near-fit is worse than ordering the wrong one. A cartridge that almost seats can leak at the housing or let water bypass the filter media entirely — the fridge runs, the water looks fine, and nothing is actually being filtered. Match the number, every time.
What Every Genuine EveryDrop Filter Has in Common
Across the range, genuine cartridges share the same basics:
- Activated carbon block media that reduces chlorine taste and odor and sediment, with the certified contaminant list varying by model — Filters 1 and A, for example, carry NSF/ANSI 42, 53 and 401 certification on their product pages.
- A roughly 6-month service life — around 200 gallons on most of the range.
- Tool-free installation — twist, push or quarter-turn, depending on the housing.
- A genuine OEM part, made to the original factory specification so it seats and seals exactly as the filter it replaces.
The catch is that the market is full of look-alike cartridges wearing the same colors. Packaging tells, label details and price red flags are covered in our guide to spotting a fake EveryDrop filter — worth two minutes before you buy from any marketplace listing.
What a Genuine EveryDrop Filter Should Cost
Every genuine EveryDrop cartridge in the range — Filters 1 through 5 and Filter A — is $39.99 one-time at Discounted Filter Store, with free US shipping on any order size. Multi-packs lower the per-filter price. Here is 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. If you order the wrong number, unopened filters can be returned within 30 days, free, with a prepaid label.
For the longer view — what staying on a genuine 6-month schedule costs across a year versus the alternatives — see our breakdown of what a genuine fridge filter costs per year.
Frequently Asked Questions
How do I know which EveryDrop filter my fridge takes?
Read the label on the cartridge already in the fridge — it shows the filter number and part number. Cross-check it against your fridge’s model number on the matching product page. The label is the final authority.
Are EveryDrop Filter 4 and UKF8001 the same thing?
Yes. UKF8001 is the older part number; EDR4RXD1 is the current EveryDrop number for the same Filter 4 cartridge.
Can I use a Filter 1 in a Filter 2 housing if it looks similar?
No. Each number is a different shape with a different locking mechanism. A cartridge that does not lock in properly can leak or let water bypass the filter media completely.
How often does an EveryDrop filter need changing?
About every 6 months — roughly 200 gallons on most of the range (Filter A is rated at about 200–250 gallons). Change earlier if flow slows or taste and odor come back.
Is a $39.99 EveryDrop filter really genuine?
At this store, yes — every EveryDrop cartridge we sell is a genuine OEM part. The $39.99 price is possible because we do not charge the official store’s markup, and shipping is free on any amount rather than starting at $70 or $99.
What if I order the wrong filter number?
Do not force it into the housing. Unopened filters can be returned within 30 days of delivery, free, on a prepaid label — and if you send us your fridge model number first, we will confirm the right number before you order.