Before the date of your scheduled AC installation is here, there are a few things you can do to prepare that require no specialized training or expertise. How to Prepare Prepare Ductwork: It's difficult for the installer to install your new AC if the ductwork is filled with dust and debris. Make sure to have your ducts thoroughly cleaned, aired out, and sealed before installation. Make Room: Clear the area of clutter and obstacles so the installers have room to work in the de