Product review (5 stars): Great filter. Get the genuine and don't deal with any hassle.
Purchased April 4th and installed a day or two later. Today (9/23) I'm at the 'red' light indicating to replace. So, it's almost about 6 months. This will vary on how often you use.

The filter has been great. No complaints from me or my family. Water tastes great. We have well water, which is softened already, and this filter does a great job and making it great.

I bought directly from Whirlpool on Amazon. The only thing I think is funny is that the filter says it's "$86" normally. Yeah right,dude, It's like $49 normally. I think you get about a $5 discount on here with free shipping if prime. No complaints though, just thought that was funny as if it was on sale for half off. C'mon Whirlpool, what the heck? LOL

Setup was easy. Hit the button on the bottom and out she came. Put the new one in and done.