I have used this ZeroWater Dispenser For over 16Months and am happy with the clean great tasting water. No chlorine taste.
Use the water for my pots of coffee every day. Filter lasts 14-16 days average. Have gone as long as 22 days and one filter change at 12 days.
Only issue I have noticed is the nozzle washer moves and can cause dripping. I have found that when cleaning I now use a wooden blunt end "skewer type" stick to adjust the washer and have not continued to have any issues.  I would absolutely recommend this dispenser and Zero Water.  The improved flavor in our coffee and the purity of our water is great and would not want to do without it.  We also have the pitcher dispenser for our Camper.