Bests & Worsts Reviews from Amazon

Seemed to work just fine for the first 2 months. But now that the temperature has gotten down around 0, it FAILED!!! I woke up at 6am the day after Christmas to a cold house while the overnight low was -1 and had a "no power" error on my Nest. I ran through their troubleshooter and couldn't solve the problem. I sent in a support ticket, and after submitting it, it told me to call. So I called their support and got stuck in an automated loop that eventually just referred me back to their troubleshooter. I just assumed no one was working that early. I grabbed my old thermostat and hooked it up and the furnace kicked on immediately and showed it was 60 degrees in the house. I received an e-mail from my support ticket the next day, telling me I had to call them to solve the problem. Again I called, and never got through to a person. After a quick online search, I found out that this problem has been occurring since last year, but Nest doesn't seem to acknowledge it. I can't trust this thing to work in the cold when I absolutely must have heat in the house. What if we were out of town? With the highs being in the teens all week, our pipes would have frozen and our home would have had a huge disaster. I'm definitely returning it!