posted on
June 23, 2009 at 10:14PM
I live in town, and have what some call "city water", which is treated and filtered before being distributed to consumers. I don't have to change my filter as often as someone might who is on a well with no form of water treatment. I'm going a a year now, and have noticed no decrease in flow or quality. However, some folk on wells with no sediment filtration must change them every 3 months. So the answer is, "It depends."
As for where to buy, I have heard that Lowes sells a Whirlpool brand version of our 9030 for less than Sears does. My guess is it is their version of our old 9020, not as good as the 9030, but that is unconfirmed. Home Depot sells a wide variety of GE-branded filters. If you have a Sears Parts store nearby, you can pick up a two-pack at a discount over two separate individual items, or you can even order them direct from http://www.sears.com/shc/s/s_10153_12605_Appliances_Refrigerators_Parts+%26+Accessories#filter=Type|Replacement+filters.