Amazon Smart Thermostat with Alexa & Ring Requires C-Wire or Adapter Kit

Before purchasing, see if the thermostat will work in your home and to determine if your home needs a C-wire adapter. You would likely need to purchase a C-wire adapter if you have an older HVAC system or if you are upgrading from a normal thermostat to a smart thermostat.

Smart upgrade - Amazon Smart Thermostat is an easy way to switch from a traditional thermostat and help reduce energy usage.
Create comfort zones throughout your home by using select Echo devices or Amazon Smart Air Quality Monitor to automatically adjust heating and cooling based on temperature readings or presence detection.
Save money - After purchase, Amazon will send you an email with details about rebates that may be available from energy providers in your area. Explore rebates above.
Save energy - According to EPA estimates, ENERGY STAR certified thermostats save an average of $50 on yearly energy bills.
Automatic Control - Alexa can automatically switch between your preferred home, away, and sleep temperatures.
On-the-go control - Let Alexa set the temperature, or set it yourself from anywhere with the Alexa app.
You can do it - The Alexa app will guide you through the installation process, but customer service is always available.
Reliable - Made with Honeywell Home Thermostat Technology and backed by 130 years of experience.

Amazon Smart Thermostat only works with one Alexa account. While multiple users cannot connect their individual Alexa accounts, household members can share control through one account.

Amazon Smart Thermostat works with 2.4 GHz Wi-Fi networks. Please ensure your router has 2.4 GHz enabled.

Amazon Smart Thermostat doesn't have a speaker or microphone. For voice control, use a compatible Alexa-enabled device, like an Echo (sold separately), or the Alexa app.