Find the right air, water and replacement filter in minutes
Shop by size, model, or problem and get the perfect fit for cleaner air and water.
Top sellers
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Replacement Cartridges & PartsUltrafiltration (UF) Water Filter Membrane
Price range: $50.50 through $130.00 -
Inline Water FiltersFluoride Removal + SMART Refrigerator / In-line Water Filter System
Price range: $120.00 through $180.00 -
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Ships from U.S. suppliers
Easy compatibility lookup
Fast reorder
Secure checkout
What customers say
Found the exact furnace filter size in seconds. Shipping was super fast!
The compatibility lookup made it easy to match my air purifier model.
Auto-reorder means I never forget to swap my water cartridge. Love it.
Frequently asked questions
Check the size printed on the side of your current filter, or use our Filter Finder to match by model.
Most HVAC filters last 1-3 months; water and purifier filters vary by model. See each product page for guidance.
Yes, orders over $49 ship free within the U.S.
Unopened items can be returned within 30 days for a full refund.
Choose a delivery interval at checkout and we will ship replacements automatically.
Many of our filters are sourced from U.S. suppliers; check each product page for origin details.