We have it connected to run to our fridge water line. Helps make the water taste better and no extra particles left in the glass when you leave a glass of water overnight.
Makes having clean, fresh drinking water convenient -- no pitchers, no clumsy add-ons to the kitchen faucet. Compact -- fits in a cabinet with very limited space. Read reviews about installation problems, but I found it extremely easy to install, and the kit included almost everything I needed in appropriate sizes. The only thing I had to buy was a large stainless steel fender washer, because the hole in my sink was a bit large for the supplied nut. My interior designer wife is very pleased with how the finished installation looks, which is a big plus!
The system is very good, however I offer the following improvements that I feel could be made; Each under counter sink area is different. In our case it was necessary to mount the filter system on the left side of the cabinet. That would have been no problem had you supplied sufficient tubing. I suggest you put at l;east 4 feet of each size in your boxes to allow for that set of circumstances. As it were, I had to go out and purchase tubing to complete the installation. Secondly. I mounted the filter system a bit higher on the cabinet wall to keep it out of the way. It would be helpful if you would place the red light in the front portion of the unit so it could easily be seen from any angle.
I was tired of buying the Pur water filter for my kitchen sink faucet. Also having that filter on my kitchen faucet got outdated when I replaced my faucet with a faucet sprayer all in one, so the Pur filter was not an option anymore. Very pleased with this 3 stage water filter by Aquasana. I installed this myself. Everything you need comes in the package. I am a pretty experienced do it yourselfer woman. The hardest part of the installation was removing the kitchen sink drainpipe to be able to "fit" under the sink.
Pros: Clean taste, Easy to clean, Easy to install, Long lasting filter