A Wi-Fi module is a small dongle or built-in chip that allows you to control your HVAC system via a smartphone app from anywhere in the world. This allows you to turn on your AC while leaving work so your home is cool when you arrive. Most of our wall mount units come Wi-Fi ready or include the module in the box. This technology is a staple of our MRCOOL and Cooper&Hunter lines. You can also monitor your energy usage and receive maintenance alerts directly on your phone. It’s the ultimate way to manage your multi-zone wall mounts for maximum comfort and savings.