Refrigerator Water Filter Replacement | Complete Guide for Every Brand 

Refrigerator water filter replacement is needed every 6 months or 200 gallons. Locate the filter (inside the fridge or base grille), twist out the old one, insert the new filter and twist until it clicks, hold the reset button 3 seconds, then flush 2-3 gallons before drinking. The right replacement filter depends on your fridge brand and model, check the label on your current filter first.

Refrigerator water filter replacement is one of the most skipped maintenance tasks in American homes and one of the most important. An overdue water filter for the fridge does not just underperform, it can actually push trapped contaminants back into your drinking water. This guide covers how to find the right filter for your fridge, when to replace it, how to install it in minutes, and what to do when things go wrong.

What Is a Refrigerator Water Filter and Why Does It Need Replacing?

A refrigerator water filter is an activated carbon block cartridge that removes contaminants from water going to your dispenser and ice maker. It needs replacing because the carbon becomes saturated over time and loses its ability to filter typically after 6 months or 200 gallons.

Every refrigerator filter works by forcing water through compressed activated carbon. The carbon traps contaminants through adsorption, a process where impurities bond to the carbon surface. Once the carbon is saturated, it stops capturing new contaminants and can start releasing old ones back into the water.

This is why replacement on schedule matters, not just for taste, but for actual water safety.

What does a Fridge Water Filter Remove?

A genuine OEM refrigerator water filter certified to NSF 42, 53, and 401 removes:

• Lead, mercury, and asbestos
• Chlorine taste and odor
• Cysts Cryptosporidium and Giardia
• Pharmaceuticals, atenolol, carbamazepine, and others
• Emerging contaminants BPA, estrone, MTBE
• Turbidity and sediment

Generic filters are often only NSF 42 certified covering chlorine taste and odor only. OEM filters cover up to 24 certified contaminants.

How Do You Know When Your Fridge Water Filter Needs Replacing?

Replace your fridge water filter when the indicator light turns red or orange, when water tastes or smells off, when flow slows noticeably, or after 6 months whichever comes first.

Here are the most common signs and what each means:

Sign	What It Means	Action
Filter light is red or orange	Filter past recommended lifespan	Replace immediately
Water tastes or smells off	Filter no longer removing contaminants	Replace now
Slow water flow from dispenser	Filter clogged or overdue	Replace soon
Ice has unusual taste	Filter affecting ice maker supply	Replace now
6 months have passed	Standard replacement schedule	Replace regardless of indicator

Lifespan by household size

The standard 6-month / 200-gallon rule is an average. Your fridge water filter may need replacing sooner depending on how many people are using the dispenser

Household Size	Recommended Replacement	Estimated Gallons/Month
1-2 people	Every 6 months	~30-35 gallons
3-4 people	Every 4-5 months	~40-50 gallons
5+ people	Every 3-4 months	~55-70 gallons
Heavy ice usage	Every 3 months	70+ gallons

Set a phone reminder every 5 months slightly before the 6-month mark. This way you always replace on time and never drink from an overdue filter.

Which Refrigerator Water Filter Does Your Fridge Take?

Check the label on the filter currently installed in your fridge. It will show the filter number or part number. Use that to find your exact replacement.

Not all water filters for refrigerators are the same, each brand uses specific filters for specific models. Here is a quick brand guide,

Brand	Filter Number	Part Number	Filter Location
Whirlpool	Filter 1, 2, 3, 4, or 5	EDR1-5RXD1	Interior or base grille
KitchenAid	Filter 1, 2, 3, or 4	EDR1-4RXD1	Interior or base grille
Maytag	Filter 1, 2, or 3	EDR1-3RXD1	Interior or base grille
Amana	Filter 1 or 3	EDR1RXD1 / EDR3RXD1	Interior or base grille
Jenn-Air	Filter 1, 2, or 4	EDR1-4RXD1	Interior housing
Kenmore	Filter 1, 2, or 3	EDR1-3RXD1	Interior or base grille
GE / Samsung / LG	Brand-specific filters	Not EveryDrop compatible	Check fridge manual

GE, Samsung, and LG use their own proprietary filter systems, not EveryDrop compatible. Check your fridge manual or the manufacturer’s website for the correct replacement.

How to Do a Refrigerator Water Filter Replacement

A fridge water filter replacement takes under 3 minutes with no tools. The process is the same across most brands, only the filter location varies.

Interior filter (Upper inside fridge)

• Locate the filter: Open the fridge, filter is in the upper area, usually behind a small panel or push-button housing.

• Release the old filter: Press the eject button or twist counterclockwise to release.

• Remove it: Pull straight out. Keep a cloth ready for drips.
• Insert the new filter: Remove the cap, align the arrow, push in firmly and twist clockwise until it clicks.

• Reset the indicator: Hold the filter reset button for 3 seconds until the light turns green.
• Flush the line: Run 2-3 gallons through the dispenser and discard before drinking.

Base grille filter (Bottom front of fridge)

• Find the grille: Look at the bottom front of the fridge, filter slot is usually on the left side.

• Eject the filter: Press the eject button or twist a quarter turn counterclockwise.

• Pull out: Pull straight out toward you, have a cloth ready, grille filters drip more.
• Insert new filter: Remove cap, push in firmly, twist clockwise until locked.

• Reset and flush: Hold reset button 3 seconds, run 2-3 gallons through dispenser.

Always flush 2-3 gallons after any refrigerator filter replacement, black specks in water are harmless loose carbon from the new cartridge and clear after flushing.

Is an OEM Filter Worth It Over a Generic Replacement?

OEM filters provide full 24-contaminant NSF protection and protect your appliance warranty. Generic filters cost 40-70% less but typically only cover chlorine and basic contaminants. For households with children or health concerns, OEM is the safer choice.

When shopping for a fridge filter replacement, you will find OEM and generic options. Here is an honest comparison:

Feature	OEM Filter	Generic / Compatible
NSF certified contaminants	24 (NSF 42/53/401)	Typically 2-7 (NSF 42 only)
Guaranteed fit	Yes	Varies
Manufacturer warranty	Protected	May void warranty
Price per filter	$45-$55	$15-$30
Lead + cyst reduction	Yes	Not always

A reputable NSF-certified generic from a brand like Waterdrop handles chlorine and basic sediment well at a lower price. But for lead, cysts, pharmaceuticals, and full warranty protection, the genuine OEM filter is worth the extra cost.

What Problems Can Happen After a Refrigerator Water Filter Replacement?

Most post-replacement problems are slow flow, bad taste, dispenser not working are caused by air lock or an improperly seated filter. Remove the filter, reinsert firmly until it clicks, then flush 2-3 gallons.

Filter light still red after replacement

You need to manually reset it and hold the filter reset button for 3 seconds after installing the new filter.

Water dispenser not working after new filter

Air lock is the most common cause to remove filters, reinsert firmly, flush 2-3 gallons. If still not working, check the water supply valve behind the fridge.

Black specks in water after new filter

Completely normal loose carbon particles from the new cartridge. Flush 3-4 gallons and they will clear.

Water still tastes bad after replacement

Filter not flushed enough, run an additional 2 gallons through the dispenser and discard before drinking.

Summary

Never use a cracked or visibly damaged filter. If the filter housing itself is leaking, not just dripping during installation, stop using the dispenser and contact your fridge manufacturer before proceeding.

UnifiedFilter.com carries genuine OEM water filters for refrigerators from all major EveryDrop-compatible brands Whirlpool, KitchenAid, Maytag, Amana, Jenn-Air, and Kenmore. All five filter types in stock with fast USA shipping.