I accidentally pressed "Remove Home". What do I do now?
FAQ , Thermostats , Troubleshooting Modified: March 19, 2026
From the removed thermostat, login using your Lennox S40 credentials under Menu > User Account. Logging in will automatically add the Lennox S40 Smart Thermostat to your account again. You will be prompted to re-enter the home address.
Note: If there was more than one thermostat registered in the home at the time it was removed, you will have to repeat this process for every thermostat.
Find a Local Pro
Enter your zip code to find a Lennox® dealer near you for service, support, or installation.