Overall this is a good product. Iam giving 4 stars because I live in an older apartment unit that has problems with rust in some of the piping. Consequently I need to change this filter far more than the recommended amount (closer to every 45-60 days) if I want normal water pressure.
It would have been nice if the lifespan was based on typical water quality/consumption rather than a flat gallon estimate thatis water quality agnostic. I have to imagine itis possible to build a lifespan calculator thatis location-specific given publicly available water quality info.
This is an excellent and affordable way to filter the water. It also easy to change. My only issue is getting down on my knees to get under the sink. I have to make sure I use knee pads. I'm close to 80 and still do it myself.
3 & 4 star only because my last one only lasted 5 months and trickled out water... replaced and all good...!! GREAT FILTER SYSTEM!! (I JUST TURNED MY FRIEND ON TO YOU AS WELL...:)