Love the thermostat, easy to set up accurate and easy to control with the app but the Geofencing is less than reliable. Works about 25 to 30% of the time bringing into question it's real benefit for efficiency.
I really like this thermostat (I have four - for zoned radiant in-floor heat)! It was very easy to install (given that all existing thermostat wiring did have the required C-wire). Also very easy to set up, but..... the user's manual didn't mention most of the settings available from the on-screen menu. For example, 3 of the 4 thermostats I installed are in bedrooms, so screen brightness at night is an issue. The owner's manual didn't mention that it could be dimmed (permanently or on a schedule) - but a little Googling solved that problem. It turns out even 10% brightness is too bright (the increments are 10%), so I have the bedroom thermostats programmed to go to 0% during sleeping hours.
For all 4 thermostats I installed a remote sensor in a second room (part of the same zone) which greatly improves the temperature control (provided I select the appropriate priority zone(s)).
The associated app works really well, in my experience, and integrates easily with Google Home. Also, by having the C-wire, I no longer need to replace thermostat batteries!
I bought because of the geo fence capability which turns off the furnace when you aren't at home. However, I was really disappointed that when using the geo fence option it doesn't dove tail with a "schedule" option. I assumed that there would be a basic function of weekdays and weekends (at a minimum) so I could set the thermostat to comes on at 6:00 am weekday and off at 10:00pm (sleep setting) but on the weekends, I would be able to set the "wake" time to something else because who wants to get up at 6:00 am on a weekend! But it has 1 sleep setting only. It seemed like such a simple setting to include, but no. I ended up having to do a work around with Alexa asking her to turn the heat on "early" on the weekdays and off again before the sleep settings kicked in. In the end it worked but why did it need to be so difficult?
Fantastic chpice for classic interior. Our house was built with the T6 model installed, so the switch was quick and simple. The functionality is on par with the more expensive and widely known models but the logic and learning algorithm is superior.
Had two systems, one of the thermostats was in a hall way. It was either to cold in winter or hot in summer for one side of the house, this fixed the problem. The sensor reads. Perfectly and now the temp stays stable in the areas as needed.