To obtain your HomeKit registration code for your ecobee thermostat, you must first pair your ecobee thermostat with HomeKit either through the Home app or the ecobee mobile app; during the pairing process, your HomeKit registration code will generate on your ecobee’s screen.
If you need help pairing your ecobee with HomeKit, please refer to the following article: https://support.ecobee.com/hc/en-us/articles/115004905767-How-do-I-connect-to-HomeKit-
Finding the HomeKit code for your ecobee Switch+
The HomeKit registration code for your ecobee Switch+ can be found in one of two places:
- On the back of your ecobee Switch+ wall plate
- On the back of your Switch+ installation manual