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

Last updated

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 Wi-Fi or is using your smartphone's data. If Apple HomeKit is still not working with your Lyric T5 Wi-Fi thermostat, call our customer support at 1-800-633-3991.


Message Resideo


Message us on Twitter for help with our products.

Monday through Friday:
9am to 6pm CDT
Saturday and Sunday:
9am to 5pm CDT

Live Chat with Resideo


Connect with an agent for quick assistance.

Monday through Friday:
9am to 8pm CDT
Saturday and Sunday
9am to 5pm CDT

Call Resideo


Speak directly with an agent for help with our products.