Works great. I only wish you could program it to switch from heat to ac automatically. It would be nice if you could program circulate fan on at night and auto in day.
This thermostat is far and above the one I replaced with it. I can already see the difference in my electric and natural gas usage. The WiFi is an added bonus and I have just found out recently, that I get notified when there is a power outage by a phone call and text.