It's bit of a chore in that on my Whirlpool Refrig you need to remove the grill on bottom front and the Utility Panel on bottom rear. Then unscrew the original filter housing and pull it out through the back of utility opening. Remove the two water hoses and put them into new filter house. Reverse the disassembly process to reinstall new filter housing. I'm old and slow so the process took me about 45 minutes. (Note: Unplug electric and turn off water inlet before starting.)