Product review (5 stars): Replacing Helped With My Flow Rate
I waited a couple of years before replacing our fridge's first filter, but now realize that our flow rate is a lot better after popping in a new filter. Just note the model number of your fridge and make sure it matches up with the filter number -- I ordered the wrong ones by mistake before getting it right.

At $40 per filter, I'll probably stretch this one out again -- at least until the flow rate slows back down.

Replacing the filter was easy, but keep some paper towels handy as mine (a Whirlpool) leaked out a bit.