![Amazon.com: ecobee Smart Thermostat Premium with Siri and Alexa and Built in Air Quality Monitor and Smart Sensor with SmartSensor for Doors and Windows 2-Pack, White Amazon.com: ecobee Smart Thermostat Premium with Siri and Alexa and Built in Air Quality Monitor and Smart Sensor with SmartSensor for Doors and Windows 2-Pack, White](https://m.media-amazon.com/images/I/51izt0Hzw5L._AC_UF894,1000_QL80_.jpg)
Amazon.com: ecobee Smart Thermostat Premium with Siri and Alexa and Built in Air Quality Monitor and Smart Sensor with SmartSensor for Doors and Windows 2-Pack, White
![I have a multistage system with a third stage of heat (W3) or cool (Y3). Can I install an ecobee thermostat? I have a multistage system with a third stage of heat (W3) or cool (Y3). Can I install an ecobee thermostat?](https://storage.googleapis.com/article_attachments/Multisage_Diagram_Install%20On%20Time%20Delay%20device.png)
I have a multistage system with a third stage of heat (W3) or cool (Y3). Can I install an ecobee thermostat?
![ecobee Smart Thermostat Enhanced Programmable Wifi Works with Siri, Alexa, Google Assistant Energy Star Certified Smart Home EB-STATE6L-01 - The Home Depot ecobee Smart Thermostat Enhanced Programmable Wifi Works with Siri, Alexa, Google Assistant Energy Star Certified Smart Home EB-STATE6L-01 - The Home Depot](https://images.thdstatic.com/productImages/af3035da-e5d3-4790-8d2e-163f043ed066/svn/black-ecobee-programmable-thermostats-eb-state6l-01-c3_600.jpg)
ecobee Smart Thermostat Enhanced Programmable Wifi Works with Siri, Alexa, Google Assistant Energy Star Certified Smart Home EB-STATE6L-01 - The Home Depot
![ecobee Smart Si Thermostat 2 Heat-2 Cool with Full Color NON-Touch Screen - Programmable Household Thermostats - Amazon.com ecobee Smart Si Thermostat 2 Heat-2 Cool with Full Color NON-Touch Screen - Programmable Household Thermostats - Amazon.com](https://m.media-amazon.com/images/I/41rA1f5DxhL.jpg)
ecobee Smart Si Thermostat 2 Heat-2 Cool with Full Color NON-Touch Screen - Programmable Household Thermostats - Amazon.com
![I have two separate R wires on my thermostat. What do I need to know about my ecobee thermostat installation? I have two separate R wires on my thermostat. What do I need to know about my ecobee thermostat installation?](https://storage.googleapis.com/article_attachments/Dual%20transformer_Diagram_Repurpose%20G%20wire_Before.png)