Pur Refrigerator Water Filters

I have the KitchenAid KSCS25INSS referigerator which uses a 200 gallon Pur water filter. There are a number of Whirlpool/KitchenAid/Kenmore refrigerators that use this system and share a compatible set of filter cartridges. All of them can be described as "side-by-side refrigerators with bottom-mount push-button canister water filters".

These are the following compatible filter cartridges:

Kenmore 9020 - "Ultimate Referigerator Filter"
(Replacement cartridge #T1RFKB1 for Model #T1KB1)
Whirlpool 4396710 - "EZ Change Advanced Water Filter"
(Replacement cartridge #T1RFWB2 for Model #T1WB2/T1WB2L)
KitchenAid 4396711 - "Advanced Water Filter"
(Replacement cartridge #T1RFWB2 for Model #T1WB2/T1WB2L)
Whirlpool 4396841 - "EZ Change Deluxe Water Filter"
(Replacement cartridge #T2RFWG2 for Model #T2WG2,T2WG2L,T1WG2, T1WG2L)

All are recommended to be changed every 6 months, but the Kenmore filter is rated for only 100 gallons while the others are rated for 200 gallons. Additionally the Kenmore filter has been tested for reduction of TTHMs and MTBE. The differences are called out here at www.filtermart.com. The Pur website only has a description of the Kenmore version, which you can find here.

The KitchenAid/Whirlpool Advanced Filters are widely available on the Internet for around $31 each with no tax and free shipping in quantities of 5. The Kenmore 9020 part is only available from Sears and is $40 online at www.sears.com, and $42 in the store, plus tax and shipping. Click here to buy a 5 pack of the Whirlpool/KitchenAid version from www.filtermart.com.

At the time that the filter indicator showed 0%, the ice maker also stopped working. Not sure if the two were at all related - I did find that the drip tube to the icemaker had frozen, and that a piece of ice had lodged itself in the ice maker mechanism.