Answer Hello Jerry. You will press in on the clip and drop down the housing cover. Then you will unscrew the old water filter and screw in the new filter EDR4RXD1. After installing the filter, you will need to run about 2 gallons of water through the dispenser to remove any air in the lines. Hope this helps. Read More... Answered by AppliancePartsPros.com | Friday, January 27, 2012