Nest Learning Thermostat 3rd Generation, White, Works with Amazon Alexa

The Nest Learning Thermostat adjusts to user preferences and saves energy by learning temperature habits and reducing usage when not needed.

• The description claims the thermostat saves an average of 10% to 12% on heating bills and 15% on cooling bills.
• The description claims it can turn off the furnace in case of carbon monoxide detection.