Here is a cool gadget that turns your existing air conditioner unit smart. momit Cool is pretty easy to use. Simply download the app, attach the device to your air conditioner, and you are ready to go.
momit Cool gives you app control of your A/C unit. With the momit Gateway, you can connect it to the Internet. The device lets you put your cooling unit on a schedule. It learns from your habits to save you money. More information is available here.