Why won't my thermostat connect to Apple® HomeKit™?

Use the following steps to connect your thermostat to Apple HomeKit:

1. Check the model number of your thermostat to make sure it is HomeKit-enabled.
2. Check the wiring of your thermostat. If the thermostat does not have a C-wire, please contact your installer. Make sure your Lyric app is has been updated to the latest version.
3. Make sure your smartphone is connected to WiFi or is using your smartphone's data. If Apple HomeKit is still not working with your Lyric T5 WiFi thermostat, call our customer support at 1-800-633-3991.