Universal AC Remote Control

Most of the air conditioning units out there have the same remote control module, even if they are made by different companies. So, if you have a phone that comes with an infrared sensor, the chances are that you’re going to be able to use it as a remote for the AC unit.
 
The developers of Universal AC Remote Control say that around 100 brands are supported by their application. Users can have 20 different remotes on their devices, allowing them to control multiple units at once. All the features that you would get with a regular remote will be available through the app.