How do I reset my Honeywell Home?

The method to reset a Honeywell Home thermostat depends on your exact model, but there are generally three levels of reset. For a simple reboot that preserves all settings, remove the thermostat faceplate from the wall mount for 30 seconds and then reattach it, or if it has batteries, remove them for 30 seconds. For Wi-Fi and HomeKit reset on models like the T5, T6, T9, and RTH9585WF, go to Menu > Wi-Fi Setup or Menu > Reset and select Reset Wi-Fi or Reset HomeKit. This clears network settings but keeps your schedule. For a full factory reset that erases all schedules, preferences, and Wi-Fi credentials, navigate to Menu > Preferences or Menu > Thermostat Information, then look for Reset or Factory Reset. On the T5 and T6 series, you can press and hold Menu for 5 seconds, scroll to Reset, select Factory, and confirm. On the T9 and T10, go to Menu > Thermostat Information > Reset. After a factory reset, the thermostat will restart as if new and ask for initial setup including language, location, and Wi-Fi configuration. Always take a photo of your wiring before resetting, and you will need to re-add the device to the Honeywell Home app afterwards.