This requires phone to setup "smart" features and not all phones work. I spent 3+ hours trying to set it up with current phone and after reading a recomendation to try different phone it took a few minutes using my 4yo spare phone. The app is constantly asking me to setup the thermstats again every time I want to change anything. It's usually quicker to walk to the thermostat and change it. At least it works well as a dumb theromstat. Connecting things to the internet and controlling them from an app or browswer shouldn't be this difficult. If it wasn't already installed in my home I would have returned it.
Easy installation with written instructions and video's. Operation is simple and remote Wifi access with app is definitely a plus. The only issue I have with the thermostat is is it's loss of communication between with Wi-Fi /app.
I attempted to resolve this issue by separating the 2.4 and 5 Ghz with specific passwords and changing the channel. The thermostat is located less than 10 feet line of site from the modem with a signal range of -43 to -47 dBm with 18m.
Overall I like the thermostat and the options it has. I do get a temperature error a lot because it uses the online temp. The Resideo app is lacking a little bit the usual data is not real time it takes several days to update
This wifi thermostat and the capabilities of being able to control temperature and monitor runtime is amazing - able to conserve energy by setting at a higher temp when no one in the house and lower temp before we get home!
Rating is for excellent customer service by Carol. The T6 thermostat is too soon to review.We had this installed (with new HVAC) on June 24th. I think there was an update that caused a connection issue.