Action Required: Important Information About Your T9/T10 Thermostat

Sept. 28, 2022

As part of our ongoing commitment to you, we regularly push firmware updates that improve the performance and compatibility of your device. On September 27th, we initiated a firmware update to our T9 and T10 thermostat products.

Earlier today, we became aware of reports of a limited number of devices that had entered a factory default condition (presented by a welcome screen on the device) at which point we immediately paused all further updates.

We're contacting you to let you know that we believe your device was one of those impacted and want to make sure that we can get your device back to its original configuration. If you are unable or uncomfortable in moving your device through the set-up process, we have established a priority service, toll-free line at 1-888-292-1944 and have expanded our hours of operation to support you through this.

We understand that this falls short of the high expectations you have of us, and that we have of ourselves. We give you our ongoing commitment to learn from this and we thank you for being a loyal customer of Resideo Honeywell Home thermostats.



Resideo Customer Experience Team