Your 21 cu. ft. side-by-side refrigerator model No. WRS321SDHV05 uses Everydrop Filter 1-EDR1RXD1 water filter
Water that smells or tastes off is a sign your filter needs replacing. The Whirlpool refrigerator WRS321SDHV05 water filter replacement, built around the genuine EveryDrop Filter 1 (EDR1RXD1), is specifically engineered to target and trap the compounds causing odors and poor taste in your drinking water. It reduces harsh chlorine, lead, and foul-smelling trace contaminants — keeping both water and ice quality stable with everyday use.
Backed by NSF/ANSI certification, it supports dependable contaminant reduction you can rely on. The intuitive twist-and-lock housing secures tightly without tools and stops hidden internal leaks. Replace every 6 months or 200 gallons to maintain peak performance and steady water flow. 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.