How to Replace a Refrigerator Water Filter

That blinking "Change Filter" indicator? It's not a suggestion. Here's what the cartridge does

while it's fresh: traps chlorine, lead, sediment, and a long list of stuff you don't want in your glass.

After about six months of daily use, the carbon gets full, flow drops, the taste goes flat. Push it

further and bacteria colonize the spent media. You're drinking dirtier water than what comes

straight from the tap.

Finding the Right Filter (Without a Manual)

Wrong filter = won't fit, or fits but leaks because the O-rings don't match. Either way, bad day.

● Fastest route: yank the old filter out and read the part number stamped on it. That's your

answer. If the ink is gone or there's no filter in the fridge, find the model number. It's on a

sticker inside the door jamb, usually upper left. Punch that number into the

manufacturer's site or Amazon. Done.

● No sticker either? I've been to houses where somebody painted over the label. Seriously.

In that case, snap a photo of the filter housing and bring it to a parts counter.

Budget: $20–$50 for name-brand cartridges. Generics exist for less, but make sure they're NSF-

certified. Cheap knockoffs sometimes use low-grade carbon that sheds black specks into your

water for weeks. Seen it happen. Not worth saving eight dollars.

Where the Filter Is Hiding

Three spots, depending on who built the thing.

● Upper right corner, inside the fridge. Whirlpool, Maytag, KitchenAid — almost

always here. A little hinged door or a round cap recessed into the ceiling of the

compartment. Hard to miss once you know to look up.

● Base grille, bottom front. Samsung loves this spot. Some Whirlpool side-by-sides and a

few LG models too. Round knob or push-button down by the kick plate, near the floor.

● Left door or behind the crisper. GE territory, Frigidaire sometimes. Filter twists out of

a housing in the door or drops from a compartment top-left inside the cabinet.

Can't find anything? Your fridge might not have an internal filter. Some older and budget models

use an inline canister spliced into the water line behind the unit. We'll get to that.

1. Twist-In Filters — How to Swap

Most common type out there. Whirlpool, GE, Samsung — tons of models use it.

1. 2. 3. 4. Towel on the shelf underneath. Few ounces of water will drip. No avoiding it.

Open the filter door — tab, press, swing, whatever your model does.

Grab the old cartridge. Quarter turn counterclockwise. Pull straight out. You'll feel a click

when it releases on some models.

New filter: Peel off the foil or plastic caps from the O-rings. Check the O-rings are

actually seated — they slide off during shipping sometimes, and a missing O-ring means

a puddle on your shelf by morning. Line it up with the housing, push in, turn clockwise

until it locks. Don't force it. If it won't catch, rotate slightly until the grooves engage.

You'll know when it seats — it stops turning and feels solid. Close the door.

2. Push-In Filters — Even Easier

LG, Frigidaire, some Maytag French doors. Simpler than twist-in, honestly.

1. Open the compartment door or hit the release button. Filter drops down or pops partway

2. 3. 4. out. Pull it free.

Towel underneath — you know the drill by now.

Pop the cap off the old filter and stick it on the new one. That cap is part of the locking

system. Some new cartridges ship with their own cap — use whichever fits your housing.

Slide the new one in until it clicks. If your model has an eject button, it should pop back

out when the filter is seated. Button stays depressed? Not in far enough. Push harder, but

straight — not at an angle. I've seen cracked housings from people trying to jam a

crooked filter in. Gentle, straight, click, done.

3. Inline Filters on Older Fridges

No compartment inside? No indicator light? No filter door anywhere? Look behind the fridge.

Older models and some budget units use an inline canister spliced into the water supply line.

Little cylinder, one line going in, one going out.

This one's more involved.

1. Shut the water off at the wall valve first — inline filters don't have auto-shutoff like

internal ones.

2. 3. Unplug the fridge, pull it out.

Towel on the floor, because residual water is coming out of those lines the second you

disconnect.

4. 6. Undo the fittings — compression or quick-connect clips depending on your model.

5. Swap the canister.

The new filter usually has a directional arrow — arrow points toward the fridge.

7. Reconnect, turn the water on, check every fitting for drips.

8. Tighten anything that weeps.

9. Push the fridge back.