Example: If the AC (high setpoint) is set to 78 degrees and the heat (low setpoint) is set to 68 degrees, the midpoint is 73 degrees. If you request that the temperature be changed to 75 degrees, Alex...Example: If the AC (high setpoint) is set to 78 degrees and the heat (low setpoint) is set to 68 degrees, the midpoint is 73 degrees. If you request that the temperature be changed to 75 degrees, Alexa will adjust the AC (high setpoint) to 80 degrees and the heat (low setpoint) to 70 degrees. To control thermostats using the Smart Home skill, you must use the exact name of the thermostat or group name as defined by Amazon Smart Home.