Once you have tasted filtered water and ice made from filtered water, you will not want to go back to the tap water that you might be drinking now. We recently got a refrigerator with a water and ice system, and we are just wild about the taste and appearance of the water and ice from it. We use replacement water filter part #ukf7003axx, and it does a great job for us. You must be sure, though, to replace the filter at least every six months, so that your water and ice stay as good as they are at first.