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Water Filter for the KitchenAid KSSC42FTS20 (EDR3RXD1)
✓ 100% compatible — no bypass plug needed
🔧 5-min push-in swap
🇺🇸 Ships from Indiana
Every cartridge that fits this model — pulled live from the catalogue:
✓
KSSC42FTS20 specifics — where the filter actually lives
The KSSC42FTS20 carries its water filter low on the fresh-food side or behind the base grille in most side-by-side layouts, so expect to clear one shelf edge before you have working room. This is a twist-style bay, the friendlier design: look for the index lugs, offer the cartridge, and rotate until they disappear into the housing.
Two quirks worth knowing before you order: plan on a towel for the first pull — sitting water in the line — and a five-second reset hold once the fresh cartridge is in. One prefix, one chassis family: count on KSS to place this unit among side-by-side builds; that placement carries the water-path geometry with it. A -20 style suffix means running production revisions; filter fit stayed constant across the whole run.
KSS vs the rest of the catalog — what the prefix tells you
Catalog shorthand: KSS marks side-by-side builds and the rest of the catalog marks the neighboring layout builds. Cross-checking the prefix before ordering is faster than returning the wrong cartridge. By model-code convention the KSSC42FTS20 falls around 2007-2011; treat the dates as a working estimate, not record.
Swap it in 5 minutes
- Twist the old cartridge a quarter turn counterclockwise and pull it straight down — keep a towel in reach for the dribble.
- Fill the new cartridge with cold tap water so the chamber is not fighting an air pocket.
- Offer the new cartridge to the bay, push up, and twist a quarter turn clockwise until the stop catches.
- Run two gallons through the dispenser to flush carbon fines, then hold the filter-reset control until the status light clears.
What this filter takes out of your water
| What it targets | Standard that covers it |
|---|---|
| Chlorine taste & odor | NSF/ANSI 42 — aesthetic effects |
| Particulates, Class I | NSF/ANSI 42 — fine sediment |
| Lead | NSF/ANSI 53 — health effects |
| Cysts (cryptosporidium, giardia) | NSF/ANSI 53 — microbial |
| PFOA & PFOS | NSF/ANSI 53 (P473) — varies by cartridge |
Coverage above lists what the standard addresses, not a performance claim for any specific cartridge — removal claims vary by certificate, so check the NSF listing for the exact part number you are buying.
KSSC42FTS20 filter questions
Clearing the filter status light on a KitchenAid KSSC42FTS20?
With the new cartridge seated, press and hold the filter reset until the light clears — panel placement differs, so the KSSC42FTS20 manual’s filter section has the exact control for your trim.
Does the KitchenAid KSSC42FTS20 need a bypass plug when the filter is out?
No — the EDR3RXD1 bay seals on the cartridge itself, so removing it just means unfiltered water until the next change, not a leak.
Are off-brand filters safe for a KitchenAid refrigerator?
Certified aftermarket cartridges are built to the same NSF test standards as the OEM part, and federal warranty law (Magnuson-Moss) protects your coverage when you use them.
Why is the OEM EDR3RXD1 cartridge so much more expensive?
Part of the OEM price is the badge and the distribution chain. Certified alternatives meet the same test standards at a lower unit price, especially in multi-packs.
How often should I replace the filter in my KSSC42FTS20?
Every six months or at the rated gallon capacity, whichever comes first — the EDR3RXD1 class cartridges all share that service interval.
Do I need to turn off the water supply to change it?
No — the bay is designed for a live swap. Expect a small dribble, keep a towel in reach, and flush a couple of gallons through the new cartridge before the first glass.
Every filter that fits your fridge
| Cartridge | OEM EDR3RXD1 | RECOMMENDEDEDR3RXD1 Replacement Water Filter · 1-Pack – ClearFit | EDR3RXD1 Replacement Water Filter · 3-Pack – ClearFit | EDR3RXD1 Replacement Water Filter · 6-Pack – ClearFit |
|---|---|---|---|---|
| Price | OEM list | $17.99 | $44.97 | $80.94 |
| Verified fit | ✓ the bay cartridge | View & buy → | View & buy → | View & buy → |
This filter expires six months from today
Your HVAC filter is probably on a different cycle. Track them all in one place.
months until this filter should be replaced (200-gal rated life)
Free tool · tracks fridge + HVAC + whole-house · auto-refill optional
More models using this filter
Related guides
POPULAR GUIDE
How to change a Whirlpool refrigerator water filter
Every Filter 1–6 bay location — including the door-mounted bays on WRX models, with door-open angles and cap-release quirks. — read the guide →
POPULAR GUIDE
How to reset your Whirlpool filter light
Filter 1–6 indicator maps showing which key actually clears the light on your panel. — read the guide →
WATER PROBLEM GUIDE
Does your fridge filter remove fluoride?
What EDR1RXD1-class carbon blocks actually take out — and the systems that do remove fluoride. — read the guide →