Verified buyer
"Switched from Brita and the difference is night and day — tastes like spring water. Installed in under 2 minutes."
NSF-Certified • Same-day shipping
America's filter warehouse — every model, in stock.
Premium replacement filters tested to remove 99.99% of lead, chlorine, and 78+ contaminants. We stock 500+ refrigerator, pitcher, under-sink, and whole-house cartridges. Ordered today, shipping today.
250K+
Filters shipped
4.9★
From 12K reviews
78+
Contaminants reduced
30-day
Money-back
NSF/ANSI 42 & 53
Free shipping over $100
NSF & WQA certifiedIndependently lab-tested
Free fast shippingOrders over $100
30-day guaranteeNo-hassle returns
Rated 4.9 / 5From 12K+ buyers
Trusted compatibility
Filters that fit the brands you already own
We engineer replacement cartridges to OEM tolerances for every major appliance manufacturer.
Whirlpool
KitchenAid
Kenmore
Frigidaire
Amana
Find yours fast
Shop by appliance
Pick the system you have — we'll show you compatible filters in seconds.
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Science you can taste
How Filter Warehouse cleans every drop
Multi-stage filtration captures particles down to 0.5 microns — chlorine, lead, sediment, and even microplastics don't stand a chance.
1
Sediment pre-filter
Traps sand, rust, and debris larger than 5 microns before they reach the main element.
2
Activated carbon
Adsorbs chlorine, VOCs, and bad taste — leaving water crisp and odor-free.
3
0.5-micron block
Catches lead, cysts, and microplastics that slip past standard filters.
4
Final polish
A final pass ensures clarity, balanced pH, and that fresh-spring taste in every glass.
Real owners. Real water.
12,000+ households trust Filter Warehouse
Independently verified reviews — nothing curated.
Verified buyer
"I've tried 3 different brands of replacement filters. Filter Warehouse is the only one that fit perfectly and lasted the full 6 months."
Verified buyer
"The water test strip went from yellow to clear after one day. My toddler is finally drinking water from the tap."
Common questions
Frequently asked
How do I know which filter fits my appliance?
Find your appliance model number (usually inside the door frame for fridges, or on a sticker under the sink) and paste it into our finder. We'll match it to the exact filter in seconds.
How often should I replace my water filter?
Most refrigerator and under-sink filters need replacement every 6 months or 200 gallons — whichever comes first. Heavy household usage may shorten that to 4 months. We'll email you a reminder so you never miss a swap.
Are Filter Warehouse filters NSF-certified?
Yes — every Filter Warehouse filter is independently tested to NSF/ANSI standards 42 (taste & odor) and 53 (health contaminants including lead, cysts, and VOCs).
What if the filter doesn't fit?
Return it within 30 days for a full refund — no questions, no restocking fee. We also offer free fit-check support before you order.
Do you ship internationally?
We currently ship across the U.S. and Canada. Free U.S. shipping on orders over $100.
Save 10% on your first order
Never run out of clean water.
Join 80,000+ households getting refill reminders, exclusive bundle drops, and the occasional water-nerd article. We'll send your 10% code right now.