As promised when Amazon revealed the new Amazon Tap and Echo Dot, Alexa can now control additional smart thermostats, including ones from Nest, Honeywell, Emerson, and Insteon. All Alexa capable devices, including the Amazon Fire TV and Fire TV Stick, have gained the new ability. Once configured, you can use Alexa to set a specific temperature by saying “Alexa, set the temperature to [value] degrees.” If you just want it a little warmer or cooler, but don’t know the exact temperature you want, you can say “Alexa, lower/raise the temperature by [value] degrees” to change the temperature relative to what it’s current at. If you don’t specify a value and just say “Alexa, lower/raise the temperature,” it will change the temperature by two degrees. Unfortunately, for the Nest thermostat at least, Alexa can only control the thermostat if it’s already on and can’t switch it out of Away mode. If the new built-in Nest abilities aren’t enough, there are several Alexa Skills, like Reflect Connect, Thermostat Controller, and Thermostat for Echo, that give you more control.
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