The Remotec ZXT-600 is a Z-Wave Plus infrared gateway specifically designed for air conditioning control.
It presents itself to your Z-Wave Hub as a thermostat, and can send heat/cooling requests via infrared to your air conditioning or heat-pump wall unit.
The ZXT-600 has a wide array of built in manufacturer IR codes, as well as a regularly updated cloud library for new devices.
Once configured, the ZXT-600 can (and should) be wall mounted to ensure reliable temperature sensing and the ability to beam IR commands to your air conditioner.