Diana E Middleton , WI June 07, 2015 My original filter had a few small holes in it so i wanted to replace it It was very easy to find the right filter, even though I didn't know the model number of my AC unit, using the helpful photos. Filter arrived promptly, and was simple to replace. 6 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes