At first I thought it was a bad water filter but as I removing the old one water started shooting out of the filter head. I searched online and found a video on replacing it. I saw how easy it was so i decided to purchase the part. I received it rush order and got it in 2 days. I studied the video instruction and followed it exactly as shown. It took me a total of 1 hour (turning off water and power to fridge, moving the fridge, removing the lines, removing the water filter head, replacing head and filter, run the lines, and turn on the water and power). It should have taken only 30 minutes, but I had some issues removing the 10 year old lines. If I had to do it again, it should taken less than 20.