It works great. My iPhone is by my side and I can regulate the AC and furnace with ease. I program it for regular hours and change it when I want to. My AC and furnace respond immediately. I am so glad I have it.
Was fine for a year - went offline when I did the May upgrade. Have tried everything to retire wi-fi with no success. Tried the help line 3 times - every time it's call over-loaded or down with tech issues......oh brother....