Removed back of dishwasher with hex screw driver 5 min
Unplugged power cord 30 secs
Loosened metal bracket on top and bottom with screwdriver 5 min
Pushed dispenser in and removed from dishwasher 5 min
Positioned new unit in space and snapped into place 1 min
Plugged electrics back in 1 min
Screwed back on 3 min
Roughly 20 min. I am nontechnical and rarely do repairs.