Product review (5 stars): Exactly as designed
This couldn't be easier.  Every six months, we replace the filter on our 2010 Kenmore.  One push of the old cartridge pops it out, pop the new one in, filter a few pitchers of water to get rid of air in the line.  All set for another six months.  On our fridge, the panel even has a six month timer that reminds us to order the new filter, which we do from Amazon because it's the best price on the web.