Water filter replacements for every filter in the house

Advertised prices, verified

How to stay on top of replacements

1. Inventory every filter you own. Walk the house once: pitcher or dispenser, refrigerator cartridge, faucet or shower filters, under sink stages, RO membrane and postfilter, and any whole house housings. Write down each model number straight off the cartridge body, not from memory.
2. Put the intervals on a calendar. Each manufacturer publishes a service interval or gallon rating for its cartridge. Enter them all as recurring reminders and write the change date on each housing with a marker, so the schedule survives phone changes and houseguests.
3. Buy exact matches from traceable sellers. Match the printed part number, and for fridge and branded cartridges prefer the maker's own store or an authorized dealer, because open marketplaces carry convincing counterfeits. Certified compatible cartridges are fine when they publish the same reduction claims.
4. Flush after every change. New carbon sheds harmless fines and new membranes carry preservative rinse. Run each filter to the manufacturer's flush instruction before drinking, and check for drips at the housing after the first few pressurized hours.

Why the schedule matters more than the brand

A filter is a trap, and a full trap stops trapping. Overdue carbon can begin releasing what it captured, sediment cartridges throttle the flow to the whole line, and a chlorine-exposed RO membrane behind a spent prefilter degrades quietly while the water still looks fine. Almost every filtration disappointment traces back to a lapsed schedule rather than a bad product.

Replacement costs are also where brands genuinely differ. Systems built on standard cartridge sizes enjoy competition among suppliers for the life of the unit, while proprietary formats hold you to one seller's price. When you compare items in the table, compare the yearly consumption, not one cartridge against another. Our replacement refrigerator water filters guide digs into the counterfeit problem specific to fridge cartridges.

Batching saves money and attention: align intervals so one order per period covers the pitcher, the fridge and the under sink stages together, and consider vendor subscription programs only when their per-cartridge price actually beats buying the same part on schedule yourself.

Common questions

How do I know which replacement filter I need?

Read the model number printed on the old cartridge itself, then match it exactly or use a certified compatible listing that names your part number. Searching by appliance brand alone is how wrong-size orders happen.

What happens if I skip a filter change?

Flow drops, taste returns, and an exhausted cartridge can start releasing what it captured. Behind an RO membrane, a spent carbon prefilter lets chlorine destroy the most expensive part in the system.

What do replacement filters cost per year?

It depends on the filters you run; the verified prices in the table above show a median of $1,531. Standard-size cartridges usually undercut proprietary formats over the life of the equipment.

Browse by system type

• Compare Water softeners on advertised prices
• Compare Salt-free softeners on advertised prices
• Compare Whole-house filters on advertised prices
• Compare Reverse osmosis systems on advertised prices
• Compare Shower filters on advertised prices
• Compare Countertop filters on advertised prices
• Compare Refrigerator filters on advertised prices
• Compare Iron filters on advertised prices