Installation was extremely easy. I had it up and running in 15 minutes. (Physical installation.) Setup was also very straight forward and it works very well.
Just got a Nest Thermostat E with a replacement HVAC and really like the convenience of the phone app to change or reprogram from work or anywhere and even within the home to check temp inside, outside along with the humidity level, etc. Easy to use and blends in nicer as well.