Determine the Remote Type The first step in the process is determining which type of remote controls the AC unit. Most air conditioner remotes are IF, meaning that the user must point the remote directly at the unit with no obstructions in the way in order to control the device. A select few, usually newer models, use RF remotes. These can control the unit from any room in the house within a certain range, even through walls or other obstructions. The AC owner's manual includes information about the correct remote type. Prepare the Remote for Programming After purchasing the correct type of universal AC remote and the recommended, which are usually AA or AAA, install them according to the remote manufacturer's instructions. A inside the box explains the procedure for programming the universal remote to work with hundreds of different types of air conditioner units.