Google announced the end of support for early Nest Thermostats in a support document earlier this year that largely flew under the radar. As of October 25, first and second generation units released in 2011 and 2012, respectively, will be unpaired and removed from the Google Nest or Google Home app.
Users will no longer be able to control their thermostats remotely via their smartphone, receive notifications, or change settings from a mobile device. End-of-support also disables third-party assistants and other cloud-based features including multi-device Eco mode and Nest Protect connectivity.


With Google’s track record of jumping into a market and after they have millions of users shutting it down, I’m surprised they didn’t do this years ago.
How long before Honeywell does the same? The company spun off their residential services division (including thermostats) about 7 years ago and at first things were fine, but in the last couple of years the service has become increasingly unreliable. Their servers have gone down quite a few times and settings changes are sometimes delayed even when the servers are up.
Their Z-Wave thermostat is a nice upgrade without concerns about someone sitting in a corporate America e-suite deciding to pull the plug.
I bought mine before Google bought Nest, but I sure didn’t buy anything more from them after that.