Quote:
Originally Posted by Risuli
I have the same Carrier thermostat and the issue on replacement to a "smart" one is likely the wiring. This thermostat uses only two wires and it is my understanding that the Ecobee will require additional wires (C wire at a minimum) connected to your HVAC system. Otherwise, a smart thermostat will be WiFi capable and will work as any other WiFi device in that if power goes down it will obviously NOT be connected. However, when power returns, unless something is amiss, the WiFi will also return and you will regain access and control.
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Just had an ecobee installed. I gought it and good guys installed for $150. I would have done it myself but you are correct. Carrier had just 2 wires. HVAC guy had to go to ait handler and allatch other wires. I just didn't have the skills. Love the ecobee and yes, if you lose power, wifi will come back on as will ecobee