The thermostat works well and is easy to use. The Resideo app is the weak point. There is limited functionality and data transfer is very slow. When you pull up your current settings it might take several minutes for them to be accurate for proper adjustment. The weather data is always several hours old.
The setup was quick and easy. Without a C-Wire in place the adapter made it easy for me to install without needing to buy and fix one. Once it was in place everything worked like a charm. Great instructional videos too.
The scheduling settings are amazing plus integration with Alexa make controlling a breeze.
I love the thermostat, but love more that I can choose whether to have the remote sensor or main thermostat location or even average the two locations, to determine the inside temperature control for heat or cooling. The only thing is the packed instructions referred to app control on your phone as only iPhone app and I have electronics in the android world. It was confusing getting to the correct app to control the thermostat remotely and required a customer support call. I successfully was able to downliad and now use withe the support I received.
1. Install instructions awful. Needed to download the new Residio app to get them to work online. Instructions said nothing about that. Had to call tech support to learn this. I guess Residio changed procedures after documentation with units was printed.
2. Unit won't control humidity. Need the T10 to do that. This unit should do this as the competition to this unit will do this. I thought when I bought it would control humidity but it won't. My error, but this level of unit should do by default.
3. Display functionality - Nest dims during normal operation and when you approach it illuminates to show temperature. These you have to set display brightness. Why? During the day there is no reason to always display. Go dark, save the display, and illuminate like NEST does when you walk past or approach it. This silly setting display is like the 90's. There is technology to be smarter than that. I want it dark at night when I sleep and you can do this - but it requires extra settings when it really should not.
We'll see how well it works as time goes on. There is room for improvement and I hope through firmware Residio (Honeywell) makes changes to address these two issues. The install instructions are what they are - MAKE SURE YOU HAVE THE RESIDIO app and forget about the Honeywell TCC app.