Google's own help page says the Nest Learning Thermostat 1st gen (2011), 2nd gen (2012) and 2nd gen Europe (2014) were unpaired and removed from the Nest and Home apps on October 25, 2025.
Stopped: app control from your phone, notifications, Home/Away Assist, third-party assistants, the Nest Protect link, and software and security updates. Still works: your existing schedules and everything on the thermostat itself. Google says affected owners got an email with an offer. Read Google's page. Last checked November 10, 2026.
Replace it: Google guarantees security updates for the Nest Learning Thermostat (4th gen) until August 20, 2029. Skip the 2020 Nest Thermostat: Google's guarantee for it already ended on October 30, 2025. Another option is the ecobee Smart Thermostat Essential.
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Every date below comes from the maker's own support page. Click the link to check it yourself. Last checked November 10, 2026.
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