I am in my house right now with a Nest Thermostat. After some initial issues when it was originally installed (on an older existing furnace) it seemed to work fine for about 4 months (until mid March this year). I was still in Florida when it stopped transmitting local weather conditions at home. I have worked with Nest tech support since then and although they tell me it's a software issue.. it is still not resolved. Now that my furnace season has started again it is giving me incorrect readings of weather conditions here at home and just in the last couple of days it is screwing up the 'history' screen which shows that the furnace has been running all day every day... but I'm here and I know it's not!! So I'm with sch911 above! My next one will be a Honeywell!!