Weird Noises

I went for an evening run to the kitchen to find something sweet to snack on and instead heard weird noises. I started searching through the house, in the garage and finally outside in the backyard where I was sure my neighbor was pressure washing their grill or something so late at night. Turns out it was my A/C. So I called housing and surprisingly they can get someone out tomorrow afternoon. Of course I will be gone to the waterpark with the girls and my mom is watching Junior so she gets the joy of all of this. Hopefully it is a quick easy fix. I am thinking Abs put something in there maybe?