Your 21 cu. ft. side-by-side refrigerator model No. WRS321SDHZ11 uses Everydrop Filter 1 (EDR1RXD1) water filter
Water quality should feel stable, not something that changes over time. The Whirlpool refrigerator WRS321SDHZ11 water filter replacement, built with the genuine EveryDrop Filter 1 (EDR1RXD1), helps keep that consistency in check. It works to reduce chlorine taste, sediment, chemicals, and odor-causing elements that can slowly affect how your water and ice appear and taste with regular use.
Backed by NSF/ANSI certification to Standards 42 and 53, it supports dependable filtration you can rely on. The twist-in design aligns smoothly and holds securely without leaks or tools. Replace every 6 months or 200 gallons to prevent performance drop-offs and keep water flow steady. Follow our replacement guide to stay on schedule and get the most from every cartridge. A quick 2-gallon flush after installation clears the line and delivers clean, great-tasting water from the first pour.
Most refrigerator water filters are designed to last approximately 6 months or filter up to 200 gallons of water — whichever comes first.
Modern LG, Samsung, Whirlpool, and Frigidaire refrigerators have built-in filter indicators that notify you when it's time for a replacement.
A drop in water pressure, an unusual taste, or an off smell from your dispenser are clear signs your filter is overdue for a change.