A Whirlpool refrigerator water filter answers to two names at once. The cartridge coming out of the door is stamped 4396710. The replacement box on the shelf says EDR3RXD1. Both labels describe one part, and Whirlpool retired the first of them years ago.
That single fact clears up most of the confusion in this category. A shopper who types 4396710 into a search box lands on listings written for EDR3RXD1 and has no way to confirm the match. A shopper who types EDR3RXD1 finds a refrigerator manual printed a decade ago naming a number no current box carries. This guide prints the map in both directions and gives the live price for every cartridge in the Whirlpool line.
Why one Whirlpool filter answers to two numbers
Whirlpool sold refrigerator cartridges under long numeric part numbers for years. A filter from that period reads 4396710 or 4396841 or 4396701 on the barrel. Whirlpool then moved its consumer filter line to the EveryDrop brand and gave every cartridge a short code plus a position name. The 4396710 became EDR3RXD1. Whirlpool also sells that same cartridge as Filter 3.
The cartridge itself did not change at the moment of the renaming. The housing and the twist-on collar stayed on one platform. A refrigerator built for 4396710 accepts EDR3RXD1 with no adapter and no plumbing change.
What the renaming left behind is a decade of printed manuals pointing at numbers the packaging dropped. The old number is what the appliance owner reads. The new number is what the retailer sells. Nobody publishes the bridge between them, and that gap is where people buy the wrong part.
The Whirlpool part number map
Every row below comes from a cartridge title stocked in the Whirlpool refrigerator water filters collection. Prices are the live listed prices for a single cartridge.
| Legacy Whirlpool number | EveryDrop code | Whirlpool name | Price |
|---|---|---|---|
| W10295370A | EDR1RXD1 | Filter 1 | $51.99 |
| W10413645A | EDR2RXD1 | Filter 2 | $51.99 |
| 4396841 and 4396710 | EDR3RXD1 | Filter 3 | $51.99 |
| UKF8001 | EDR4RXD1 | Filter 4 | $52.99 |
| 4396508 and 4396510 | EDR5RXD1 | Filter 5 | $51.99 |
| 4396701 | EDR6D1 | Filter 6 | $46.99 |
Two rows carry more than one legacy number. Whirlpool used 4396841 and 4396710 for the same Filter 3 cartridge across different production runs. It used 4396508 and 4396510 the same way for Filter 5. Either number on an old label points at one current part.
One row breaks the naming pattern. Filter 6 is EDR6D1 with no RX in the middle, and it is the only cartridge in the line under fifty dollars at $46.99.
Where the number hides on the old cartridge
The part number wraps the barrel of the cartridge in small print. On a twist-in filter that printing rotates out of sight the moment the collar locks. The reliable moment to read it is during the swap, with the spent cartridge still in hand.
Two other places carry the same number after the old cartridge has gone in the bin:
- The refrigerator owner manual lists the filter part in its maintenance section.
- The model and serial plate inside the fresh food compartment gives the appliance model number. The Poseidon Filters team matches that model to a cartridge at 855-789-3278.
Which cabinet takes which cartridge
The six cartridges are not alternatives to each other. Whirlpool built them for different cabinet layouts, and every product listing names the layout it serves along with the corner the filter compartment sits in.
| EveryDrop code | Cabinet type | Filter compartment | Contaminants reduced | Flow rate |
|---|---|---|---|---|
| EDR1RXD1 | Side-by-side or top freezer or bottom freezer | Top right corner or bottom left grille | 24 | 0.75 gpm |
| EDR2RXD1 | Bottom freezer | Top right corner | 24 | 0.75 gpm |
| EDR3RXD1 | Side-by-side | Bottom left corner | 66 | 0.5 gpm |
| EDR4RXD1 | Bottom freezer or side-by-side | Top right corner | 23 | 0.78 gpm |
| EDR6D1 | Top freezer | Bottom left corner | 9 | 0.5 gpm |
Every reduction count above carries an NSF certification on the listing it came from. The Filter 5 listing does not publish a cabinet type. Match that cartridge by the legacy number 4396508 or 4396510 printed on the old barrel.
The EveryDrop EDR3RXD1 listing also names the refrigerator brands that take it: Whirlpool, MAYTAG, KitchenAid, JENN-AIR and Amana. The EveryDrop EDR6D1 listing names the same five brands for top freezer cabinets.
The gap between 66 contaminants and 9 is the clearest reason to match the cartridge to the cabinet before matching it to a price. A top-freezer household that orders EDR3RXD1 because the number looks newer gets a cartridge that will not seat. A side-by-side household that orders EDR6D1 to save five dollars gets a filter certified against a much shorter contaminant list.
Whirlpool codes that never go in a refrigerator
Some Whirlpool part numbers surface in a filter search and belong somewhere else in the house. Ordering one of them for a refrigerator costs an order and a week.
- WHEERF and WHEERM name two stages of the Whirlpool reverse osmosis system under the sink, and WHEEDF names a third. No stage substitutes for another. The Whirlpool reverse osmosis stage guide sets out which cartridge each code replaces.
- WHKFR is a Whirlpool filter housing plumbed into the cold line. Gold Series GS-BQ1 Refrigerator Replacement Filter Fits Whirlpool WHKFR covers that position at $19.99.
One test separates the two families in a second. A refrigerator cartridge twists into the appliance and carries an EDR code or a legacy number in the 4396xxx or W10xxxxxxx range. A code starting with WH belongs to a system plumbed into the water line under the sink.
Original cartridge or compatible cartridge
The Whirlpool collection stocks both classes side by side. EveryDrop is the manufacturer line and Gold Series is the compatible line. A Gold Series cartridge uses the same fitting and costs under half what the EveryDrop cartridge costs at the same position. Two of them ship today.
- Gold Series GS-W3 Refrigerator Replacement Filter Fits Whirlpool Filter 6 sells at $18.99. The EveryDrop cartridge for that position costs $46.99.
- Gold Series GS-BQ1 Refrigerator Replacement Filter Fits Whirlpool WHKFR sells at $19.99.
Two more Gold Series cartridges sit out of stock. Gold Series GS-M2 Refrigerator Replacement Filter Fits Whirlpool Filter 4 covers the Filter 4 position, and GS-W2 Refrigerator Replacement Filter For 4396508, 4396510, Water Sentinel WSW2, and Whirlpool Filter 5 covers Filter 5. Both of those positions keep a cartridge that ships today. Filter 4 takes the EveryDrop EDR4RXD1 at $52.99, and Filter 5 takes the EveryDrop EDR5RXD1 at $51.99.
Filter 3 has no Gold Series counterpart in the collection. Neither does Filter 1 or Filter 2. A household running 4396710 or 4396841 buys the EveryDrop cartridge at $51.99, and that is the straight answer for those positions.
The choice between the two classes comes down to what each listing publishes. The EveryDrop pages print an NSF-certified reduction count and name the brands the cartridge is certified against. A buyer who cares about that certification pays for it. A buyer swapping a cartridge in a rental or a break room reads the compatible listing and decides on fit and price.
The Gold Series listings publish their own detail. Each cartridge uses a catalytic coconut shell carbon block and carries an NSF certification. The listings name sand and silt and rust and chlorine taste among what the carbon block reduces, and they stop short of the numbered contaminant counts the EveryDrop pages print.
Why the six cartridges are not priced alike
Five of the six sit within a dollar of each other. Filter 4 costs $52.99 and Filter 6 costs $46.99, and that six-dollar spread tracks what each listing publishes about capacity. The Filter 4 listing states a rated capacity of 300 gallons. The Filter 6 listing states 200 gallons with the indicator system and 120 gallons without one.
Capacity is the honest way to compare price across this line. A cartridge rated for 300 gallons at $52.99 works out to about 18 cents a gallon. A cartridge rated for 120 gallons at $46.99 works out to about 39 cents. The cheaper box on the shelf can be the more expensive water in the glass.
A household with two refrigerators, or an office running a break-room unit alongside a kitchen at home, rarely needs the same cartridge in both. The Poseidon Filters team at 855-789-3278 matches both appliances in one call. A single Subscribe and Save plan then carries both cartridges on their own schedules.
The flush step almost nobody reads
The EDR3RXD1 listing carries an instruction that resolves more complaints than any other line on the page. It asks the owner to flush 4 gallons of water through the cartridge before use.
Skipping that flush produces the two symptoms people blame on a defective filter. Air trapped in the new cartridge sputters at the dispenser. Loose carbon fines cloud the first several glasses and grey the first tray of ice. Both clear on their own once the four gallons have run through.
Four gallons is roughly sixteen full pitchers or one bucket held under the dispenser. Running it into a bucket and pouring it on the garden takes about ten minutes and removes the most common reason a good cartridge gets returned.
Flow rate, and the trade it hides
Flow rate is the one number on these listings that moves against filtration. The EveryDrop line runs from 0.5 to 0.78 gallons per minute, and the slowest cartridges carry the longest certified contaminant lists.
EDR3RXD1 reduces 66 contaminants at 0.5 gallons per minute. EDR4RXD1 reduces 23 at 0.78. A household moving from a Filter 4 cabinet to a Filter 3 cabinet fills a glass more slowly, and that is the certification difference showing up at the dispenser. No faster cartridge exists for the Filter 3 position.
A fill that has slowed since the last swap is a different problem. That one points at a cartridge nearing the end of its rated capacity or at air still sitting in the line from an unflushed install. Whirlpool prints the rated capacity for each cartridge on its own listing, and that number is what a household should watch.
What the multipacks actually save
Multipacks look like the obvious way to cut the per-cartridge cost. On this line the arithmetic disagrees.
EveryDrop EDR3RXD1 lists at $51.99 for one cartridge and $103.98 for two. The two-pack saves nothing per unit. The three-pack at $154.47 works out to $51.49 each. The six-pack at $305.94 works out to $50.99 each, a single dollar off the one-cartridge price in exchange for six filters bought at once.
The Subscribe and Save page publishes a standing 5 percent discount on every recurring shipment. On a $51.99 cartridge that is $2.60 off. A scheduled single cartridge lands at $49.39, and that puts it $1.60 under the six-pack unit price with $305.94 still in the account.
That page also states the rule that makes a schedule work. Set the interval to the manufacturer's rated replacement window for the cartridge in the appliance. Whirlpool publishes that window on each EveryDrop product listing, and the plan simply holds to it. The guide to how the subscription plan works walks through the setup.
Frequently asked questions
Is 4396710 the same filter as EDR3RXD1?
Yes. Whirlpool sold the cartridge as 4396710 under its numeric part system and now sells the same cartridge as EveryDrop EDR3RXD1, also called Filter 3. The Poseidon Filters product title carries both numbers for exactly that reason.
What is the difference between 4396710 and 4396841?
Nothing that affects the fit. Whirlpool applied both numbers to the same Filter 3 cartridge across production runs. Either one on an old label points at EDR3RXD1 today.
Will EDR3RXD1 fit a Maytag or KitchenAid refrigerator?
The product listing names Whirlpool, MAYTAG, KitchenAid, JENN-AIR and Amana as brands the cartridge is certified to fit. Check the appliance model against its manual before ordering, because one brand ships several cabinet layouts that take different cartridges.
Which Whirlpool cartridge does a top-freezer refrigerator take?
EveryDrop EDR6D1, the cartridge Whirlpool numbered 4396701 and names Filter 6. Its listing describes top freezer refrigerators and puts the filter compartment in the bottom left corner.
Is a compatible cartridge safe in a Whirlpool refrigerator?
The Gold Series cartridges in the collection are built to the Whirlpool fitting and seat in the same housing. The difference a buyer should weigh is certification. The EveryDrop listings publish an NSF-certified reduction count, and a household choosing on water quality should read that line on both pages before deciding.
Match the number first, then stop tracking the date
The whole Whirlpool line resolves to six current cartridges. Read the number off the old filter, then order the EveryDrop code the map gives back. Every size and price sits in the Whirlpool refrigerator water filters collection, with EDR3RXD1 at $51.99 and EDR6D1 at $46.99 covering the two most common cabinets in American kitchens.
Putting that cartridge on a Subscribe and Save plan takes the number out of the household's memory for good, at 5 percent off every shipment. A household that also runs an LG refrigerator can run the identical part-number check in the LG LT1000P guide. An office manager restocking break-room appliances and return-air filters in one order will find the air-side sizing rules in the MERV 8 sizing guide.
Unsure which cartridge a cabinet takes? The Poseidon Filters team at 855-789-3278 matches the appliance model to the part.
Reviewed by the filtration specialists at Poseidon Filters who match residential and office refrigerators to the correct cartridge every day.