There are plenty of Alexa and Google Assistant compatible thermostats on the market. If you are interested in using Cortana to control your smart home, you may want to give these thermostats a look:
Glas: a WiFi thermostat with a translucent touchscreen OLED display that can monitor indoor air quality. Works with Alexa, Google Assistant, and is built with Cortana. It also reports on allergens, air quality index and UV index.
ecobee3: measures temperature and occupancy to help you stay comfortable while saving on your energy bill. It uses sensors, external weather data and machine learning to save you money.
Honeywell Lyric Thermostat: works with Alexa and Cortana. It uses your smartphone’s location to adjust the temperature as you come and go. It also sends you notifications to help you extend the life of your HVAC system.
Have you found smarter Cortana thermostats? Please share them here.