Product review (4 stars): Filters can only do so much about moldy taste. May have to weigh replacing the lines/reservoir  or cleaning them.
Good value and It's better than drinking unfiltered tap water. Installed it after flushing the refrigerator reservoir for the first time. incidentally, I never used the water dispenser even when the refrigerator was brand new because the water in the reservoir tasted bad/moldy and I didn't want to pay someone to replace the internal lines and reservoir so I lived with the problem and didn't use the water dispenser. BUT, I saw a U-Tube video about removing mold from refrigerators so I conceived some new ideas how to improve upon their methods using  a (brake) fluid pump to start a siphon action, vinegar and bleach. I knew enough about chemistry to NEVER mix vinegar and bleach directly together because it will produce chlorine gas, a WWI POISON. Essentially I siphoned diluted bleach in through the water dispenser outlet on the front of the refrigerator into a shallow  bucket on the floor to catch the output from the normal water input connection that had been detached. Then reattached the water line and ran tap water through the system, as usual, thereby flushing the bleach out of the system. The water dispenser button had to be pressed to allow the flow of liquid in either direction. I repeated with vinegar and finally reattached the water line and flush several gallons through the system. Used 1/2 cup bleach in a gallon water. Used 1 gallon of cleaning grade white vinegar. (Brake) fluid pump kit and attachments ($25 autozone)