The first one failed (no wifi connection) and I spent hours trying to contact "support". After about 30 minutes on hold I finally did get through they were a complete waste of time! I binned it and foolishly I bought a replacement one. This lasted just over an year and that too failed by being once again unable to connect to the wi-fi. The signal was strong so it was the Nest that failed again. Contacting the "support" is as stated a waste of time so I binned that one as well and bought a Hive system on the recommendations of my heating engineer. I consider it a disgrace that a company can sell such unreliable equipment and then make it almost impossible in my experience to get it fixed. AVOID IT AT ALL COSTS!.
