Home › Fridge filters › Filter 1 (WHR1RXD1)
Whirlpool Filter 1 is model WHR1RXD1, certified to NSF/ANSI 42, 53 and 401 for specific contaminants and meant to be replaced every six months (per Whirlpool.com).
Verified from manufacturer doc Whirlpool-branded Filter 1
| Item | Detail |
|---|---|
| Model | WHR1RXD1 |
| Certification (as stated) | NSF/ANSI 42, 53 and 401 for specific contaminants |
Whirlpool's page says to pick the package matching the number and brand of your current filter.

Every six months
Read the part number printed on your current cartridge and match it exactly. Some fridges reject non-matching filters.
Whirlpool.com product page, WHR1RXD1
Last checked 2026-10-21. Manufacturers revise documents. If your unit's label disagrees, trust the label.
Whirlpool Filter 1 is model WHR1RXD1, certified to NSF/ANSI 42, 53 and 401 for specific contaminants and meant to be replaced every six months (per Whirlpool.com). Model – WHR1RXD1; Certification (as stated) – NSF/ANSI 42, 53 and 401 for specific contaminants.
Every six months (per the source document).
Read the part number printed on the cartridge you're replacing and match it exactly. Some refrigerators reject non-matching filters.
Whirlpool.com product page, WHR1RXD1 (https://www.whirlpool.com/accessories/kitchen-accessories/refrigerator/p.whirlpool-refrigerator-water-filter-1-whr1rxd1-pack-of-1.whr1rxd1.html), last checked 2026-10-21.