Product review (5 stars): Great product, glad I replaced the old one.
My indicator light on my GE Monogram fridge had gone from green to yellow. After staying on yellow for months, I re-read the manual and it said to replace it once it turned red. Well I replaced it anways and I was very glad I did. After I ran a few gallons through it on the first use, it might be in my head but the water tasted great and the speed of the water flow was noticeably faster! I now may look to replace it when it turns yellow next time.

A little bit expense but worth it.