To perform an Ecobee thermostat factory reset, start by going to the "Settings" menu on your thermostat. From there, select "Reset" and then choose "Factory Reset." This process will erase all your custom settings and restore the thermostat to its original out-of-the-box configuration. If you need further assistance or detailed instructions, feel free to visit our website for more help! https://ecobeelog.com/how-to-perform-the-ecobee-thermostat-reset/