What to do with your unsupported first and second-gen Nest thermostats

Google recently triggered frustration among homeowners by discontinuing support for first- and second-generation Nest Learning Thermostats. Unlike smartphones or laptops, which follow predictable hardware lifecycles, wall-mounted thermostats are viewed as permanent household fixtures. Losing cloud connectivity after roughly 14 years leaves these older models isolated from mobile apps and external accessories, though local physical controls and auto-schedule functions continue to operate normally.

For users unwilling to simply discard functional hardware, a couple of distinct paths exist depending on technical comfort levels. The open-source community has rallied around a free project known as No Longer Evil, which aims to restore disconnected features through custom firmware. By flashing the device, users can bypass the dead Google cloud and connect instead to local servers or the Home Assistant ecosystem. However, this process carries a minor risk of bricking the thermostat entirely, rendering even its basic offline controls useless.

Those who prefer a safer route can utilize Google's recycling program, which provides a prepaid shipping label for mailing the hardware away. Users without a printer can alternatively drop the units off at local e-waste centers or participating retailers. Before parting with an old unit, performing a factory reset through the settings menu remains crucial to wipe out personal data. While upgrading to a newer fourth-generation model or switching brands can yield better energy savings and remote access, keeping the legacy device running locally or recycling it properly remains entirely viable for households with predictable daily routines.